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Subject: New Test Suites .....you might want to look at this

Author: Joshua Lee

Date: 21:25:00 02/21/01

Tons of errors i am trying to fix so i can have chessbase process the test set.





Mark Dvoretsky: Secrets of Chess Training, BT Batsford 1991.
Translation of earlier book (in Russian) "The art of analysis."
Contains a lot of deep analysis, but unfortunately it is not
easy for the casual reader to always correctly identify the
move that is inteneded as "correct" for each diagram, so there
may be mistakes in the "answers" we give. Also, for many positions,
there *is* no correct move; such positions are given in file "dvor.for2".

begin examples from (Dvor)

1k3r2/6R1/3Np1Bp/1r2P3/5P2/6P1/b7/6K1/b Rb5b2! (Dvor) 1
1k3r2/6R1/2BNp3/4P2p/5P2/6P1/br6/6K1/b Rf8h8? (Dvor) 2
6k1/pp4p1/3p4/2p1p3/2P1P3/P2PPrPR/1P6/6K1/w Rh3h2! (Dvor) 5
8/6p1/1p1p2k1/p1p1p3/2P1P1K1/P2P2P1/1P1R4/7r/w Rd2c2 (Dvor) 6
6Q1/4k3/7p/4q3/6KP/6P1/8/8/w Qg8h7+ (Dvor) 8
2R5/8/5p2/2P1p3/4k3/2r3P1/5K2/8/w Pg3g4! (Dvor) 9
2R5/8/2P2p2/4p3/8/4k1P1/3r4/3K4/w Kd1e1! (Dvor) 10
1kb3R1/8/1p2P1B1/pP1p2r1/P1pP4/8/3K4/8/b Kb8b7! (Dvor) 11 is best move for
psychological reasons, but still loses to 2. e7!
3rb1k1/pB3pbp/1p1B2p1/3Rp3/P1P1P3/1P3PP1/7P/6K1/b Rd8d7! (Dvor) 12 is best move
for psychological reasons, but still loses to 2. Ba6!
8/6p1/6K1/4p3/3k1r2/3P2R1/8/8/b Rf4f6+ (Dvor) 13 is the best because the only
defense 2.Kxg7 is hard to see.
8/1N1b4/1P6/8/7p/4K3/7k/8/b Kh2g1! (Dvor) 14 is best because the only defense 2.
Nd8! is hard to find.
8/1p3p2/p2rp1k1/P2p2P1/3P1K2/2P5/1P6/R7/b Pf7f6! (Dvor) 15
8/5p2/p3p1k1/Pr1pK1P1/1P1P4/5R2/1P6/8/b Rb5xPb4! (Dvor) 16
8/R5pk/p2rp2p/1p2pq2/P3p3/2P5/1P2QPP1/6K1/w Pa4xPb5 (Dvor) 17
8/1R4pk/4p2p/1p2pq2/8/2P1Q3/1P3PPK/3r4/b Rd1d3! (Dvor) 18
8/1b2kp2/1p2pb2/1B4p1/PN4P1/4P3/6P1/6K1/w Pa4a5! (Dvor) 20
7k/6p1/2p1p2p/3nPp2/3P1P2/N2q2P1/1Q5P/1K6/w Kb1a1 (Dvor) 21 to which the
response is Kh7!
7k/6p1/2p1p2p/3nPp2/5P2/1Q4P1/1KN4P/6q1/w Qb3b7! (Dvor) 23
8/6p1/2p1p2p/3nPp1k/3P1P2/6P1/3N3P/K7/w Nd2c4 (Dvor) 24
R2N4/8/P5p1/2p4p/2P5/3kb1P1/1r6/7K/b Kd3e4! (Dvor) 25 wins
8/8/2b4p/1p2qppk/pQpp4/P2P2P1/1PPN1P1P/5K2/b Kh5g4! (Dvor) 26 wins
2n2n2/R4pk1/p2r2p1/3p2P1/3P1P2/2N2K2/BP6/8/w Ra7b7! (Dvor) 27 wins
8/ppk2pp1/2p4p/3r1n2/1PRp3P/P4N2/3N1KP1/8/b Kc7b6! (Dvor) 28
3k4/6Q1/7p/8/7P/6PK/q7/8/b Qa2e6+ (Dvor) 33
4k3/8/3p3p/p1p1pbp1/2P1P3/P1NP2KP/5P2/8/b Bf5d7 (Dvor) 34
8/3b4/3p1k1p/p1p1p3/2P1P2K/P1NP1P2/8/8/w Nc3d5+,Kh4h5 (Dvor) 35 unclear
8/8/3k3p/8/7P/6P1/5K2/8/w Pg3g4!!,Kf2e3! (Dvor) 36 wins. Kf3? draws.
8/4k2p/R4p2/3P2p1/4P1P1/4K3/7r/8/w Ra6a7+ (Dvor) 37 then ...Ke8 then d6!
6k1/p4pp1/2p2b1p/NrR2P2/3P2P1/P1Q4P/KP4q1/8/w Rc5c4?! (Dvor) 38
6k1/p4pp1/5b1p/N1Q2P2/3P2P1/P6q/KP6/8/w Qc5xPa7!! (Dvor) 39 draws Nc6 and d5 are
weaker
6k1/N4pp1/3P1b2/1P3P2/7p/P7/K7/8/b Ph4h3!! (Dvor) 40 wins
6k1/p4pp1/2NP1b2/5P1p/1Q6/P2q4/KP6/8/w Qb4c5 (Dvor) 41
7R/3r3R/p4pk1/1b4p1/8/8/6PP/2K5/w Rh7xRd7 (Dvor) 42
8/8/6p1/8/3r2PK/5k2/8/2B5/w Kh4g5!! (Dvor) 43
8/8/8/6R1/5Kb1/7k/8/8/b Bg4d1,Bg4e2 (Dvor) 44
3r4/1R3pkp/4B1p1/p3p3/P3PP1P/2b3P1/1n3BK1/8/b Rd8d2 (Dvor) 45
3r3k/6R1/5P1p/2nBp3/4P1PP/p3K3/8/8/b Nc5d7! (Dvor) 46
8/6k1/R7/4K1P1/4P3/8/8/6r1/w Ra6a7+! (Dvor) 47
1r6/R3K1k1/4P3/8/8/8/8/8/w Ke7d6+! (Dvor) 48
8/R7/4K1k1/4P3/8/8/8/6r1/b Rg1e1! (Dvor) 49
8/5k2/R7/4K1P1/4P3/8/8/4r3/w Ra6f6+! (Dvor) 50
8/r3K1k1/4PR2/6P1/8/8/8/8/w Ke7d6 (Dvor) 51
8/8/PR6/r4kpp/8/4K1PP/8/8/w Ke3d3! (Dvor) 52 wins
4r2k/6p1/1R5p/8/q7/3R2N1/6PK/8/b Qa4h4+,Re8e1 (Dvor) 53 which is better?
7k/6p1/4R2p/8/7q/3R2N1/5KP1/r7/b Ph6h5! (Dvor) 54
5r2/p5p1/2Pk3p/4p3/P2b2P1/8/5PB1/3R1K2/w Kf1g1! (Dvor) 56
8/p1b5/P4kpp/8/8/3B1K2/8/8/w Bd3b5! (Dvor) 57
8/8/2p1kb2/2P1p3/6PP/3bBN2/5K2/8/b Pe5e4!,Bd3c2 (Dvor) 59 either one draws but
e4 is the clearest
6k1/5p1p/4p1p1/2bp4/4rPP1/pB1RP3/P3K2P/8/b Pg6g5! (Dvor) 60
8/6p1/p1p5/PpPp1pk1/1P1Pr2p/7P/5PP1/3R1K2/w Rd1d3 (Dvor) 61
4R3/6p1/p1p2k2/PpPp4/1P1P1p1p/5P1P/3r1KP1/8/w Kf2e1! (Dvor) 63
7k/4Q1p1/1q3pPp/3p4/6P1/5PK1/2P5/8/b Qb6g1+ (Dvor) 65
8/8/PR6/2p2r2/2P1K2k/1P4p1/8/8/b Rf5f8! (Dvor) 66
3R4/5kpp/8/2nN1P2/8/3r4/4K3/8/b Ph7h6! (Dvor) 67
4n3/6p1/8/4KPkp/5N2/8/8/8/b Ph5h4 (Dvor) 68
r7/2R5/6k1/3K4/2p5/2P5/8/8/b Kg6f6! (Dvor) 69
r7/8/6k1/1K6/2R5/2P5/8/8/b Kg6f6! (Dvor) 70
8/6p1/5p2/5P1k/Kp6/1P1B2PP/P7/4b3/w Bd3c2,Bd3f1 (Dvor) 71
8/6p1/5p2/2K1kP2/1P6/3B4/8/4b3/b Be1f2+ (Dvor) 72
8/p2r4/1p1Pk2p/2p2Rp1/6P1/7P/PPP5/2K5/w Ph3h4? (Dvor) 74
8/1k4p1/4R3/1p6/8/7P/1r2pKP1/8/w Re6xPe2! (Dvor) 75
3k1b1r/1pp2ppp/p1p5/8/4P3/2N1qPP1/PPP2P2/3R2K1/b Kd8c8? (Dvor) 76
8/1b4k1/7p/8/5PPK/8/8/8/b Bb7c6! (Dvor) 77
4b3/5k2/7p/8/5PP1/7K/8/8/b Kf7e7! (Dvor) 78
8/8/2k2p2/p1P3pp/1p1K3P/1P4P1/P7/1bN5/w Nc1e2! (Dvor) 79 Kc4? is a mistake
8/8/5p2/p1k3pp/1p5P/1K4P1/4N3/8/w Pg3g4! (Dvor) 80
3k4/6p1/5p1p/3K1P1P/4P1P1/8/8/8/b Kd8e8! (Dvor) 81
8/2k2pp1/7p/3KpP1P/3bP1P1/3N4/8/8/b Kc7d7! (Dvor) 82 still loses but makes it
hard for white to win
5k2/8/5P1p/4K2P/8/8/8/8/w Ke5e4,Ke5f4 (Dvor) 83
8/4kP1P/4P3/3K4/8/8/1b6/8/b Bb2c3 (Dvor) 84
4K1k1/6p1/5pPp/3NpP1P/4P3/b7/8/8/w Ke8d7! (Dvor) 85
5k2/6p1/4KpPp/3NpPbP/4P3/8/8/8/w Nd5b6! (Dvor) 86 after 1...Kf8!
3bk3/6p1/4KpPp/3NpP1P/4P3/8/8/8/w Nd5e3! (Dvor) 87 if black to move ...Kf8!
still loses
4K1k1/6p1/3bNpPp/4pP1P/4P3/8/8/8/w Ne6d8 (Dvor) 88
8/8/3k1p1p/5P2/4K1PP/8/8/8/w Ke4d4,Ke4f4 (Dvor) 89
8/1p1kp3/p4pn1/8/4PB2/1P4KP/P7/8/b Ng6xBf4! (Dvor) 90
8/6k1/2p2n2/pp2p1r1/3pP1BR/2PP1K2/PP6/8/b Pd4xPc3 (Dvor) 91
8/1p6/pBbb2k1/P2Nr1p1/2P5/1P1R2P1/5K2/8/w Pg3g4! (Dvor) 92 If Nf4+?! or Re3?,
black can draw.
8/1p6/pBbR4/P3rk2/2P2P2/1P6/5K2/8/b Re5e6! (Dvor) 93
8/8/p7/P3k3/2P5/1K6/8/8/w Kb3a4! (Dvor) 94
2b1r1k1/p7/1p3Rp1/2pPr2p/P3P3/1P4P1/6BP/2R4K/b Bc8f5 (Dvor) 95 (but ...Kg7?,
Gligoric)
6k1/p7/1p3Rp1/2pP1r1p/P7/1P4P1/6KP/8/w Rf6xRf5! (Dvor) 96
8/8/pp1k4/2p2K1p/P7/1P4PP/8/8/w Pg3g4 (Dvor) 97
3r4/3P4/p1k5/1p3pp1/1P5p/P4P1P/3R1KP1/8/b Rd8xPd7! (Dvor) 98
8/2k5/2p2p2/4p1p1/P3P1Pp/3KNP1P/5b2/8/b Bf2xNe3! (Dvor) 99
4r1k1/6p1/1b5p/8/1N1P2n1/2nBB1P1/5PP1/R5K1/w Nb4c2! (Dvor) 108
7k/3N1Kp1/8/6P1/6P1/b2B4/8/8/w Nd7f6 (Dvor) 109 the best reply to this is Bc1!
2N4k/6p1/8/7p/8/1B5P/5bP1/7K/w Nc8e7! (Dvor) 110
5nk1/p4p1p/1pb2B2/2r2B2/8/5PP1/P6P/4RK2/w Re1e5! (Dvor) 111
8/6k1/1p1p2p1/1P1P2Pp/2n5/6K1/2B5/8/w Bc2e4 (Dvor) 116 also Bd3 works, but Be4
is "even safer"
8/6k1/1p1p2p1/3P2P1/4B3/2n3K1/8/8/w Kg3f4! (Dvor) 117 would have "kept practical
chances" and "posed more problems"
r5k1/3b2p1/3b3p/3p4/1p1N4/1P1R3P/5BP1/6K1/b Ra8a2 (Dvor) 120 after g4. 1...Ra2
2. Kg2 Bc5 3. Kf3 h5!!
8/5pkp/2Qpq1p1/8/8/6P1/5PKP/8/b Pg6g5! (Dvor) 122
8/8/4p2k/3b4/6pP/r2B4/2P2R1K/8/w Rf2f7 (Dvor) 123 then g3+ at which point 2.
Kh3? draws but 2. Kxg3 wins
8/8/8/7k/3r3P/3PR1K1/8/8/w Re3e5+! (Dvor) 125
3r4/8/8/4R3/3P1k2/3K4/8/8/w Kd3c4! (Dvor) 126
8/8/8/6kp/8/1P2R1P1/7r/2K5/b Kg5f5 (Dvor) 127
8/8/8/1P3k2/7r/4R3/8/2K5/w Kc1c2! (Dvor) 128
8/P1R5/6k1/2K3p1/r7/8/8/8/b Ra4a1! (Dvor) 129 ...Kh5 loses.
1r6/8/8/7P/k5P1/1p3K2/8/2R5/b Rb8h8! (Dvor) 130 but white plays Ra1+ Kb4 Rh1!
and wins.
7r/8/8/7P/k5P1/6K1/1p6/7R/b Rh8h6! (Dvor) 132
8/k7/8/8/5K1P/8/1r4P1/8/b Rb2f2+! (Dvor) 133
8/8/1P6/8/2P5/5k2/2K5/4r3/b Kf3f4! (Dvor) 134
8/3r4/1P2p3/8/5kP1/4p3/2K4R/8/w Pg4g5! (Dvor) 136
8/1r6/5pp1/3k4/P3R1PK/5P2/8/8/w Re4e3! (Dvor) 137
8/8/1R2k3/5p2/P2K1P2/8/8/r7/b Ke6e7! (Dvor) 138
r7/5pk1/5p2/2p5/pp6/1P1B1KPN/P6P/8/b Pc5c4! (Dvor) 139
2r5/5pk1/5p2/8/1p6/pP1B1KPN/P6P/8/w Nh3f2! (Dvor) 140
8/5pk1/5p2/8/1N6/pP2K1P1/4B2r/8/b Rh2h3! (Dvor) 141
8/5pp1/p3p3/1p1kP2p/1b3P1P/1P1K2P1/P4B2/8/b Bb4a5! (Dvor) 145
2b5/4k1p1/1p6/p2BP1p1/2K5/P7/1P5P/8/b Bc8a6+ (Dvor) 146
8/4k1p1/1p6/pb1BP1p1/8/P1K5/1P5P/8/b Ke7f8! (Dvor) 147
8/6p1/7p/ppk2B2/5PP1/2P5/b2K3P/8/b Pg7g5! (Dvor) 148
8/8/6p1/3k1pBp/5P1P/3K4/5b2/8/w Bg5d8! (Dvor) 149
8/8/p4Bp1/1pPb2P1/1P2kp2/P7/5K2/8/w Pc5c6! (Dvor) 150
3B4/8/p1b3p1/1pP2kP1/1P6/5p2/5K2/8/b Kf5f4! (Dvor) 151
8/4k3/pp6/2pPb3/P1P1P3/5Kp1/8/1B6/b Pb6b5! (Dvor) 152
8/1p3k1p/6p1/2B1K3/p7/2P3P1/7P/5b2/b Bf1h3! (Dvor) 153 but white can still draw
8/1p5p/8/6p1/p5k1/B1P1K1P1/7P/5b2/w Ke3f2! (Dvor) 154
8/p7/1p1p4/1PpP4/2Pb4/4k3/4Bp2/5K2/b Bd4f6 (Dvor) 156
8/2k1pp1p/3p2p1/2pP1PP1/2P1P1P1/pK6/8/1Bb5/b Kc7d7 (Dvor) 157
8/4ppkp/3p2p1/2pP1PP1/B1P1P1P1/p7/K7/2b5/b Bc1xPg5! (Dvor) 158
8/4ppk1/3p2P1/2pP2bp/B1P1P1P1/K7/8/8/b Ph5h4! (Dvor) 159
8/4p1kp/3p2p1/2pP2b1/B1P1P1P1/K7/8/8/b Kg7f6! (Dvor) 160
8/4p3/3p4/2pP2b1/2P1P3/5Bkp/4K3/8/w Pe4e5! (Dvor) 161
8/4ppkp/3p2p1/2pP1PP1/2P1P1P1/p7/K3B3/2b5/b Pf7f6! (Dvor) 163
7r/p2k1pp1/1p1Pb3/3p1p1p/P1rP1B2/8/5PPP/R2R2K1/b Ph5h4! (Dvor) 164
5b2/2k4p/5p2/1KPB4/3p1P2/8/4P2P/8/w Ph2h4! (Dvor) 165
5b2/k4N2/6p1/8/1p2Pp1p/1K5P/6P1/8/b Ka7b8! (Dvor) 167
5b2/8/8/k3P1p1/1p1N1p1p/1K5P/6P1/8/w Nd4e6 (Dvor) 169
8/8/1p1p4/pPpP2kp/2P1P3/1P4K1/8/8/w Kg3f3! (Dvor) 170
8/1pp3p1/1p1p1k2/1P1P3P/2P3K1/8/P7/8/w Kg4f4 (Dvor) 171
8/5p2/1P6/4P2P/3kb3/5pK1/8/8/w Pe5e6! (Dvor) 172
8/8/2p1p2b/1pPp1p1k/pP1P1P2/P2PB2K/8/8/w Be3c1! (Dvor) 173
8/5kpp/4p3/5p2/2P2P2/5rP1/2KR3P/8/b Pe6e5! (Dvor) 174
3Q4/5k2/2K3p1/6Pp/5P1P/8/8/q7/w Qd8d5+ (Dvor) 175 white has no win, but this is
"the main line", says dvor
8/8/8/4kp2/7R/6K1/2r4p/8/b Rc2d2 (Dvor) 176
8/8/7p/5pk1/8/5K2/7P/8/w Kf3e2! (Dvor) 177
8/K7/p5p1/2B3P1/1P2p2P/4Nk2/r7/8/w Ph4h5! (Dvor) 178
8/5pp1/3p4/4pPk1/7p/4KP1P/2B5/8/b Pd6d5! (Dvor) 179 what about ...Kf6 instead??
8/p4p2/4pp1p/1p1k4/1P4P1/2PK1PP1/P7/8/w Pa2a4! (Dvor) 180
1b6/5k2/2R2p2/5P2/4P3/5Kp1/8/8/b Kf7e7! (Dvor) 181
4n3/4B2R/8/8/8/4p2K/p7/5k2/w Kh3g3! (Dvor) 182
5k2/5P2/6p1/7N/6Kb/4R3/2n5/5r2/w Re3c3 (Dvor) 184
4r2n/7k/4P1N1/2R5/4n3/8/4K3/8/w Rc5c4,Rc5e5 (Dvor) 185
B1b5/p1P4k/7P/8/8/2p5/1pP2PP1/1K6/w Pg2g3!!,Pf2f4! (Dvor) 186
8/3p4/5B1k/7P/8/p7/P7/3K4/w Bf6b2!! (Dvor) 187
B7/8/2P5/r7/4p3/B5k1/8/2K5/w Ba3d6+ (Dvor) 188
1K6/3k3N/1P6/8/p7/8/8/8/w Nh7f8+!!,Kb8b7! (Dvor) 189
1K6/6n1/N3k3/pP6/8/8/8/8/w Pb5b6 (Dvor) 190
6B1/8/5R2/5n2/Rnp2k2/7p/4p3/2K5/w Kc1d2 (Dvor) 191
R7/8/P7/8/4p3/4k3/r6p/7K/b Ke3e2!! (Dvor) 192
2K5/2P4R/k7/8/8/8/2r4p/8/w Kc8b8 (Dvor) 194
6k1/1K2p3/R3P2P/p7/8/8/8/r7/w Kb7c8!! (Dvor) 195
7N/7K/8/7p/3k1P2/p7/P7/8/w Pf4f5!! (Dvor) 196
8/3p4/6p1/6pk/4P1p1/8/4P1P1/7K/w Kh1g1!! (Dvor) 197 but black can still draw
8/8/6n1/2P5/4K2p/1p6/6B1/3k4/w Ke4e3!! (Dvor) 198 the only move to win but this
is refuted by ...Ne5!!
8/2P5/1n1N4/8/8/K4Pk1/8/8/w Ka3b3,Ka3b2 (Dvor) 199
8/8/8/K7/8/k2P1R2/B2n4/7n/w Rf3h3!!,Rf3e3! (Dvor) 200
8/5p2/8/3P1p1P/8/5P2/p1p2PQb/k3K3/w Ke1d2 (Dvor) 201
8/1B6/3p3B/6P1/1b2b1R1/1k6/1Pp1r3/2K5/w Rg4g3+!! (Dvor) 202
6b1/8/5P2/p7/2p2P2/7k/1P6/K6B/w Bh1c6!! (Dvor) 203
8/2q5/pb1N3P/k7/1n6/2N5/5B2/5K2/w Bf2c5!! (Dvor) 204
4B3/8/1p6/1n1K1R2/8/1k5b/8/8/w Rf5f3+ (Dvor) 205 but black can still draw
4r3/1p2P3/p7/6N1/3p1kpB/1P6/1P3K2/8/b Re8xPe7!! (Dvor) 206
8/1p6/p7/4B3/3p4/1P1k3p/1P3K2/8/b Pa6a5!! (Dvor) 207
2r5/5k1p/NP6/4bp2/3p1N2/PRn2PP1/6K1/8/b Be5xNf4!! (Dvor) 208
3r4/1P3k2/8/P4p2/5P2/3N1P1p/3p4/3K4/b Rd8xNd3!! (Dvor) 209
rr4k1/5ppp/8/8/3R4/4P3/p4PPP/R4K2/w Kf1e2!! (Dvor) 210
3b4/8/6p1/6Pk/7P/8/5KP1/2N5/w Kf2g3!! (Dvor) 214
8/4P3/4r3/k7/8/4N3/6p1/1R4Kb/w Ne3f5!!,Ne3d5! (Dvor) 215
8/3pP3/3p2q1/4p3/8/6n1/2PP2Q1/k2K4/w Kd1c1!!,Qg2a8+! (Dvor) 216
8/pP4p1/3bppp1/2p5/k3PP1P/3P4/2P2B2/6K1/w Ph4h5!!,Pf4f5! (Dvor) 218
8/8/4Nr2/8/1p6/p5B1/8/2K4k/w Ne6d4!! (Dvor) 219
2k2nq1/6pp/8/4P1PP/1p3N2/p7/5R2/KB6/w Bb1a2 (Dvor) 220 but black wins no soln
R7/K7/8/p7/2R5/4n2r/k1p5/8/w Rc4a4+ (Dvor) 221
8/3b4/4pK2/N2B4/7n/3R4/8/2b1k3/w Bd5e4!! (Dvor) 222
5B2/1b4PN/4K3/5P2/7n/3p3k/6n1/8/w Nh7g5+ (Dvor) 223 but black can draw
8/3b4/kp2p1p1/p2pP1P1/PP6/KN1P4/8/8/b Bd7c8!,Pa5xPb4+ (Dvor) 224 both lose, but
Bc8 is the slowest loss
8/5b2/1k2p1p1/2NpP1P1/1K1P4/8/8/8/w Nc5a4+ (Dvor) 225
8/2k2b2/4p1p1/K1NpP1P1/3P4/8/8/8/w Ka5b5! (Dvor) 226
4b3/KNk5/4p1p1/3pP1P1/3P4/8/8/8/b Be8f7 (Dvor) 227 loses the most slowly
8/2k2bp1/pp2p2p/P2pP3/1P1N4/1K1P2P1/7P/8/w Ph2h4 (Dvor) 228
8/5b2/2k1p1p1/K1NpP1P1/3P4/8/8/8/w Ka5a6 (Dvor) 229
4N3/4KP2/8/5q2/6k1/8/8/8/b Qf5e5+! (Dvor) 232
8/b7/P2p4/1PpP3B/8/4k3/5p2/5K2/w Pb5b6! (Dvor) 234 given a !! by dvoretsky
8/5k2/5p2/1R3P2/4P3/5Kp1/5b2/8/w Rb5b1 (Dvor) 236



326 of the 495 positions in Israel Gelfer: Positional chess handbook,
Macmillan 1991. Only positions in which there is apparently a unique
best move (that is, Gelfer uses a "!" or it is a "study") or in which
there is a clearly bad move (that is, Gelfer uses a "?") are included
which is why only 326 of the 495 appear here. The "?" positions are at the
end, segregated from the "!" ones. In the "?" positions moves listed
without "?" are certainly better than the "?" moves, thinks Gelfer,
although it is perhaps not as clear as in the "!" cases that he thinks
they are clearly the unique best choice. Definitely you should get points
for not playing the "?" move.

2r3k1/p4pbp/6p1/1NB1p3/p3P3/P4P2/1P4PP/2K4R/w Nb5c3! (bad is Nxa7?) Gelfer.3.495
2r1r1k1/2pq1pbp/Q1pp1np1/8/4P3/2N5/PPP2PPP/R1B2RK1/w Qa6c4! (bad was Qd3? Qe6!)
Gelfer.4.495
8/7b/8/8/1N5p/1pp5/7Q/k1K5/w Qh2a2+! Gelfer.5.495
5r1k/p4Ppr/5p1p/2R4Q/7b/8/R5Kn/6n1/w Rc5c8! Gelfer.6.495
1nq3k1/4Q1p1/6P1/3pp2b/2pp3p/8/1P5K/2B5/w Qe7f7+! Gelfer.7.495
4q1kr/p6p/1prQPppB/4n3/8/2P5/PP2B2P/R5K1/w Qd6xNe5! Gelfer.8.495
r3k1r1/ppp2p1p/3p1Bp1/4p1N1/8/8/PP3PbP/2R1K2R/w Rc1xPc7! Gelfer.9.495
r2qr1k1/p1pn1ppp/bp6/3QPp2/2BP4/2P5/P2B1PPP/R3K2R/b Nd7xPe5! Gelfer.12.495
4r1q1/1p1b1k2/p2PpBp1/2P1PpQp/1P5P/2R5/5PPK/8/w Pb4b5! Gelfer.13.495
4n2k/pp3rp1/3p3p/1PpPpNP1/2P1P2P/P7/8/4R1K1/w Pb5b6! Gelfer.14.495
4k3/1pp2npB/p2p1p1p/3P3P/2P2P2/8/PP4P1/2K5/w Kc1d2! Gelfer.15.495
3k4/p2n3p/1p2p1p1/2p1P1P1/2K1BP2/2P5/PP6/8/w Be4f3! Gelfer.16.495
8/ppk4p/2pr1pn1/8/P1B2P2/2P3P1/7P/4R1K1/w Ph2h4! Gelfer.28.495
2nB4/8/p5k1/2p2rp1/2P5/1P4K1/P7/3R4/w Pa2a4! Gelfer.29.495
7r/3k1pp1/pp3n1p/2p1R3/5P2/6P1/PPP3BP/6K1/w Bg2f1! Gelfer.30.495
1r4k1/5p1p/1p3np1/pR6/P1Pr3P/2R2B2/1P4P1/7K/w Pc4c5! Gelfer.32.495
2k5/1p1r2p1/p7/3n1pBp/4r2P/2P2K2/P4PP1/2RR4/w Rd1d3 (planning ...Rc4, 2. Rcd1!)
Gelfer.33.495
5k2/5p2/2PP1n2/8/8/6p1/PP1pB3/6K1/b Nf6e4! Gelfer.36.495
8/1Pk5/p1p5/5p1p/b1P3P1/5N2/8/6K1/w Pg4xPh5! Gelfer.37.495
6k1/7b/8/5pK1/5P2/8/6N1/8/w Kg5h6! Gelfer.38.495
5bk1/7p/3p4/2pPp2P/2P1N1P1/8/5K2/8/w Pg4g5! Gelfer.41.495
8/5b2/1k2p1p1/2NpP1P1/1K1P4/8/8/8/w Nc5a4+! Gelfer.42.495
8/2kb4/p1p2pp1/2Pp4/3N1PP1/1P4K1/P7/8/w Pg4g5! Gelfer.46.495
8/1p3p1p/p2kb1p1/2np4/P2N4/2K1PP2/1PB3PP/8/w Pe3e4! Gelfer.50.495
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6/w Ne3g2! Gelfer.56.495
8/p2b1kpp/2p5/3p4/5N2/5P2/PP4PP/4K3/b Bd7f5! Gelfer.60.495
rq4k1/3b1ppp/4p3/n2pP3/p2N4/1P2QN2/P4PPP/2R3K1/w Ph2h4! Gelfer.63.495
4r3/r4kpp/p7/1p1pRP2/3Pn2B/P5P1/6P1/2R3K1/b Re8xRe5! Gelfer.66.495
5rk1/p2b2pp/2p5/2Pprp2/8/P1N5/1P3PPP/2R2RK1/w Pf2f4! Gelfer.68.495
6k1/4b1p1/8/4p3/8/8/1P1BK1P1/8/w Bd2c3! Gelfer.70.495
8/5b2/p2k4/1p1p1p1p/1P1K1P1P/2P1PB2/8/8/w Bf3e2! Gelfer.72.495
4b1k1/1p3p2/4pPp1/p2pP1P1/P2P4/1P1B4/8/2K5/w Pb3b4! Gelfer.77.495
8/kp1b4/2p1p1p1/P1P1Pp1p/1KB2P2/6PP/P7/8/w Pa5a6! Gelfer.81.495
8/1p1b4/6k1/2Pp3p/3P1p1P/8/6PK/5B2/w Pg2g3! Gelfer.83.495
8/2k4p/p1p1bp2/8/1P2PP2/4K3/7P/5B2/w Ke3d4! Gelfer.84.495
2b1k3/2q3b1/3p2p1/p1pPp1Bp/PpP1P2Q/1P5P/6P1/3B2K1/w Pg2g4! Gelfer.85.495
2rb4/1p1k2p1/p2p1p1p/P2PpP2/1P1pP1PP/3P4/1R1B4/3K4/w Pb4b5! Gelfer.86.495
8/pbR1r1kp/6p1/1p6/4PB2/P2P4/6PP/6K1/b Re7xRc7! Gelfer.92.495
8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8/b Pg6g5! Gelfer.93.495
4r3/6k1/1p1p2p1/p2P1p2/P1Pb3p/1P3R1P/4B1P1/5K2/b Bd4e3! Gelfer.95.495
3rqr1k/ppp1b1pp/8/3B4/1P1pP1P1/P5P1/4QPK1/3R1R2/w Bd5c4! Gelfer.102.495
3bqr1k/6p1/4p2p/p2p4/1p4Q1/1PrBP2P/P2R1PP1/3R2K1/w Pe3e4! Gelfer.104.495
1r6/4b1k1/3q2pp/p2Bpp2/1pQ5/1P2P1P1/P4PKP/2R5/w Pe3e4! Gelfer.105.495
3r4/p1r1qpkp/1p2p1p1/1B4b1/3P4/P3P3/1P2Q1PP/R2R2K1/b Pe6e5! Gelfer.106.495
8/8/8/1N1k4/1p6/8/7K/8/w Nb5c7+! Gelfer.107.495
K7/8/8/5pp1/2k2N2/8/8/8/w Nf4e6! Gelfer.108.495
k7/8/4p3/6p1/p7/8/Pp4N1/3K4/w Kd1c2! Gelfer.109.495
4K1nk/7p/8/7P/8/4N3/8/8/w Ke8f7! Gelfer.110.495
8/5pkp/1n4p1/1P6/3K2P1/2N4P/8/8/w Nc3d5! Gelfer.112.495
2n3k1/pp3ppp/3p4/3P4/3N4/8/PP3PPP/2K5/w Nd4b3! Gelfer.116.495
8/p1pk1p1p/1p2n1p1/8/P7/1P4P1/2P2PKP/3N4/b Ne6d4! Gelfer.119.495
6k1/p5p1/2n2p1p/3p1N2/Pp1P2PP/1P6/5P2/6K1/b Pg7g6! Gelfer.120.495
8/4p2p/p3kp2/4n1p1/8/1P3P2/P3K1PP/2N5/b Ke6d5! Gelfer.123.495
6k1/2n2pp1/pp2p2p/8/4P3/P2P2PP/2N2P2/6K1/w Pd3d4! Gelfer.124.495
8/5kp1/p2r4/8/4P3/3PK3/8/R7/w Ra1a5! Gelfer.127.495
8/5kpp/p4p2/1p6/2rP1P2/P3K1P1/1R5P/8/b Kf7e6! Gelfer.129.495
3rk3/5p2/p2p1P2/2pP3p/2P5/5K1P/P7/5R2/w Rf1b1! Gelfer.131.495
8/pp2r1k1/2p1p3/3pP2p/1P1P1P1P/P5KR/8/8/w Pf4f5! Gelfer.133.495
3r4/7p/Rp4k1/5p2/4p3/2P5/PP3P1P/5K2/b Rd8d2! Gelfer.134.495
8/R5pp/2p1k3/2p2p2/2P5/1P2P1P1/P3r2P/6K1/b Pg7g5! Gelfer.135.495
8/5p1k/r5pp/P7/3R3P/6P1/5PK1/8/w Rd4a4!  Gelfer.136.495
8/8/1R2pkpp/P7/5p1P/4r3/1P3K2/8/b Re3e5! Gelfer.141.495
8/r5k1/2p3p1/P1P2pP1/1K6/5R2/8/8/w Rf3a3! Gelfer.147.495
5r2/p2k3p/1pR3p1/1P1p1p2/3P1PP1/3KPP2/8/8/w Kd3e2! Gelfer.149.495
6k1/8/6rp/P1B2p2/4b3/2b4P/5K2/4RB2/w Re1xBe4! Gelfer.153.495
7k/2n5/p2p3p/2pP1P1B/2P5/4B3/1b3P2/6K1/w Be3d2! Gelfer.154.495
8/1p1nkpbp/p2p1np1/2pP4/P1P2B2/2N4P/1P3PP1/3B2K1/w Pa4a5! Gelfer.161.495
2kr2nr/ppp2ppp/n7/1N6/3N4/8/PPP1KPPP/R3R3/w Nb5xPa7+! Gelfer.163.495
b1r5/p1r2pkp/2n1p1p1/2P5/4B3/2R2N2/P4PPP/2R3K1/b Nc6b4! Gelfer.164.495
2r2rk1/1p1qbppp/p1n1p3/3pP3/3P3P/5N2/PPRBQPP1/2R3K1/b Be7xPh4! Gelfer.165.495
r1r5/p2k2bp/1p2ppp1/3n4/8/P2P2P1/1B1NPPKP/2R2R2/b Bg7h6! Gelfer.166.495
R4rk1/5ppp/5q2/1p1Qp3/8/1B6/1PP2bPP/5K2/w Qd5xPf7+! Gelfer.167.495
rn5k/1p2q1p1/pB1pp2p/4p3/4P1Q1/2P3P1/PP3P1P/3R2K1/w Qg4h4! Gelfer.168.495
2b2k2/5ppp/p3p3/1nN5/4P3/5P2/1P2BKPP/8/w Be2xNb5! Gelfer.169.495
2r2rk1/p1q3pp/bp1bp3/4P3/Q1P5/6B1/P4PPP/2R1R1K1/b Bd6a3! Gelfer.170.495
8/5b1k/1p2p2p/2qpPp2/p2N1P2/P2PK3/1P5P/3Q4/w Qd1c2! Gelfer.171.495
2r5/p1r2b2/1p1p1k1p/PP2ppp1/2P2P2/3KP1P1/2RN3P/2R5/b Pd6d5! Gelfer.173.495
8/1B3kpp/4b3/p1Nn1p2/1p3P2/1P4P1/P3P2P/6K1/w Bb7xNd5! Gelfer.174.495
3r4/3r1k1p/1pppq3/p4p2/2PRnPpN/1P2P1P1/P1Q4P/3R2K1/b Pd6d5! Gelfer.176.495
3r2k1/p4pp1/1p2n2p/3p4/3P1q1P/1P1Q1NP1/P4PK1/2R5/w Pg3xQf4! Gelfer.189.495
r1r3k1/1b3ppp/p3p3/1pb5/5P2/5N2/PP2PPBP/2RR2K1/w Nf3e5! Gelfer.191.495
5rk1/2p1q1p1/r1n1p2p/p2p1p2/P2P1P2/Q1P3P1/4P1BP/R4RK1/w Qa3c5! Gelfer.192.495
r1b2rk1/ppp2pb1/3p3p/2nPp1q1/2P1P1BN/2N3P1/PP4P1/R2QK2R/w Bg4xBc8!
Gelfer.195.495
rnr3k1/pp2qnb1/3p1p2/2pPp1p1/2P1P2B/2N4P/PP3P2/R2QKN1R/w Nf1e3! Gelfer.196.495
r1rq2k1/p2n4/b2b1pp1/PppPp2p/4P3/1P2N3/1B1QBPPP/R3R1K1/w Be2xPh5! Gelfer.197.495
r4rk1/1p1nbppp/p2p1n2/4pPB1/4P3/1NNP4/PP4PP/R4RK1/w Bg5xNf6! Gelfer.198.495
r4rk1/ppq1bppp/3pbn2/4p3/4PP2/2N1B3/PPP1B1PP/R3QRK1/w Pf4f5! Gelfer.200.495
r2r2k1/pp3pbp/3pbnp1/1N2p3/q3P3/P3BP2/1PPQ2PP/1K1R1B1R/w Pc2c4! Gelfer.201.495
2r1k2r/2q1bpp1/pn1p1n2/4pP2/R3P2p/1NN1B2P/1PP2RP1/3Q2K1/w Be3xNb6!
Gelfer.202.495
2kr3r/1bq1bppp/p2p4/2n1pPP1/1p2P2P/1N3QN1/PPP5/2KR1B1R/w Bf1c4! Gelfer.203.495
1r1r2k1/1pqn1ppp/p2p4/P2P4/2P5/3B3P/1P1Q2P1/2RR3K/w Pc4c5! Gelfer.205.495
2rr2k1/1b3pp1/p2p1b1p/1p2pP2/4P3/P1N5/1PP1BRPP/3R3K/b Pd6d5! Gelfer.206.495
r4rk1/p1pnbppp/4p3/qp6/3PN1PP/P3Q3/1PP2P2/2KR1B1R/w Pb2b4! Gelfer.210.495
2q2rk1/p1rn1ppp/1p2pn2/8/Q2P4/2P2N2/P2B1PPP/2RR2K1/b Rc7c4! Gelfer.216.495
r3r1k1/pp3pp1/2np1q1p/2p1p3/2PPQ3/2P1PB2/P4PPP/R3R1K1/w Pd4xPc5! Gelfer.221.495
rnb1k2r/pp3ppp/3p4/q1p1p3/2PP4/P1P1P3/2QN1PPP/R3KB1R/w Pd4xPe5! Gelfer.222.495
3r2k1/pp4bp/2n1pnp1/2p5/8/2N1PN2/PP2KPPP/R1B5/w Nf3g5! Gelfer.223.495
4r1k1/pp1rq1pp/2p1p3/4Ppb1/P1PP4/1PNR1QP1/6KP/3R4/w Pc4c5! Gelfer.225.495
r2q1rk1/1np1bppp/p2p4/4p3/Pp2P3/3P1N2/1PP2PPP/R1BQR1K1/w Pc2c3! Gelfer.234.495
r1bq1rk1/3n1ppp/p2b1n2/1ppPp3/P3P3/1PNB1N2/5PPP/R1BQ1RK1/b Pc5c4! Gelfer.235.495
r4r2/3nq1kp/3p1bp1/2pPpp2/p1P5/2B2P2/PPB1Q1PP/3R1RK1/b Pe5e4! Gelfer.236.495
2rq1rk1/pb3ppp/1p2p3/n7/3PP3/3B1N2/P2Q1PPP/3RR1K1/w Pd4d5! Gelfer.237.495
r3r2k/pb1q1pp1/1p1P3p/4P3/2p5/2Q2N2/P4PPP/3RR1K1/w Pe5e6! Gelfer.238.495
2nrbrk1/1pq1bppp/n7/p1pP4/2N5/PPN3P1/1B2QPBP/3R1RK1/w Pd5d6! Gelfer.239.495
q4rk1/pb2bppp/1p2pn2/8/3PP3/3BQN2/PB3PPP/2R3K1/w Pd4d5! Gelfer.243.495
1rb1r1k1/2qn1pbp/3p2p1/1pnP4/2p1PP2/2N1B1NP/1PB2QP1/R4RK1/w Pe4e5!
Gelfer.244.495
2r1nrk1/pbqn1p1p/1p6/2p1pP2/2Pp3P/1P1Pb1P1/PB2Q1BK/RN2NR2/b Pe5e4!
Gelfer.245.495
snb1k2s/pp1n2bp/2p2pp1/8/2P1PB2/2N2N2/PP2B1PP/3R1RK1/w Pe4e5! (contrary to
appearances, black cannot castle here, hence the "s"s representing rooks which
cant castle) Gelfer.247.495
r3k2r/ppq1n1pp/2nbbp2/2p5/2PpPP1N/3P4/PP1N2BP/R2Q1RK1/w Pe4e5! Gelfer.248.495
2q3rk/3n3r/1pBp1n1p/pPpPpPpP/P3P3/2PKQ3/1R1N4/7R/b Pc5c4+! Gelfer.250.495
3n1nk1/2Qb1p2/3p1qp1/2pPp2p/1pP1P3/1P3P2/2BN2P1/5NK1/w Pf3f4! Gelfer.251.495
5nk1/2p3q1/1p1p1p2/3P1P1Q/2P1P1p1/5p2/PPB2P2/5K2/w Pe4e5! Gelfer.252.495
r1br1bk1/2p2p1p/p1Bpn1p1/N6n/2P1P2q/5P1P/P3N1P1/1RBQR1K1/b Pd6d5! Gelfer.253.495
r2q1bk1/p1p2r1n/2Ppbnpp/1P2p3/1N2Pp2/2N2P2/P3B1PP/R1BQ1RK1/b Pd6d5!
Gelfer.254.495
2r2qk1/r2n2p1/p3p2p/2pp4/8/Q3P3/PP2BPPP/2R2RK1/w Pe3e4! Gelfer.255.495
2r3k1/4bppp/1q1p4/1p1P4/nP1pP3/3B1Q1P/5PP1/R4NK1/w Pe4e5! Gelfer.256.495
r2bk2r/pp3p2/2p1n1p1/3pP3/1P4PN/2P3B1/P4PK1/R6R/w Nh4f5! Gelfer.257.495
1r2rqk1/pbnn2bp/3p1pp1/2pP4/Np2PP2/5NPP/PP3B2/2RQRBK1/w Nf3d4! Gelfer.258.495
2rq2k1/1b1r1ppp/1pp1p1n1/p2pP1P1/PnPP1P2/1PN1N1P1/3Q2B1/2RR2K1/w Pf4f5!
Gelfer.259.495
r4rk1/3nb1pp/p1b1p3/q2pP3/2pP2P1/2N1BN2/PPQ2R1P/2R4K/b Nd7c5! Gelfer.260.495
6r1/3bbk2/4p2p/1p1pPp2/2pP1Pr1/P4K2/1P4NP/1R2B1R1/b Pb5b4! Gelfer.261.495
2rqn1k1/p2prppp/1p2p3/8/1PP5/P2Q1BP1/4PP1P/2RR2K1/w Bf3b7! Gelfer.262.495
1rr3k1/1q1bbp1p/4p1p1/1Pp1P3/p1B2P2/8/P1RBQ1PP/1R5K/b Bd7c6! Gelfer.263.495
r7/1p1qr1kp/p4pp1/2QP4/P3N3/7P/1b3PP1/R3R1K1/w Ne4g5! Gelfer.264.495
8/2k2p2/1p6/2p1nB1p/3pP3/P2P4/2P4r/3K2R1/b Pc5c4! Gelfer.266.495
rnbqnrk1/ppp2pbp/3p2p1/3Pp3/2P1P3/2N1BP2/PP2N1PP/R2QKB1R/b Bg7h6! Gelfer.270.495
2kr3r/ppbqn1pp/2n1bp2/2p1pP2/P1NpP2N/3P2P1/1PPB2BP/R2Q1RK1/b Be6xNc4!
Gelfer.272.495
r1b2rk1/1p3pp1/pn3n1p/2q1p3/P3P3/2N2N2/BP1RQPPP/3R2K1/w Qe2e3! Gelfer.273.495
8/3k4/1qp1p2p/p2pPppb/P3n3/BP2P1PP/2Q2PBK/8/w Bg2xNe4! Gelfer.274.495
6k1/2q2p1p/p2b2pP/1p1B4/1p2P3/1P3QP1/P4PK1/8/w Pe4e5! Gelfer.275.495
r1b1k2r/pp3ppp/2p5/2npP3/1b3P2/2N1P1Pq/PPB2K1P/R1BQ3R/b Bb4xNc3! Gelfer.276.495
r2qk2r/pppb1ppp/8/n2p4/3P1B2/P1P5/2Q1PPPP/R3KB1R/b Bd7b5! Gelfer.278.495
r1q2rk1/3nbp1p/2p3p1/p3p3/Pn2P3/2N1BB1P/1PP2RP1/R4QK1/w Bf3g4! Gelfer.279.495
r4rk1/4bppp/p3bn2/3p4/N7/3BB3/PP3PPP/R3R1K1/w Be3c5! Gelfer.280.495
r4k2/r2b1ppp/p4n2/2NpR3/1P6/3B1P2/P5PP/R5K1/w Nc5xBd7+! Gelfer.281.495
r1r3k1/4b1pp/pp2pp2/3p4/1NnP3P/2P3P1/P3PP2/1R2BRK1/b Be7xNb4! Gelfer.282.495
r4rk1/pp2pp1p/2n1b1p1/2p5/7N/1PP3P1/P3PPBP/R2R2K1/w Bg2xNc6! Gelfer.283.495
1rb1qrk1/p1p1bppp/8/2p1PP2/n4BP1/2N5/PP3Q1P/2KR1B1R/w Bf1b5! Gelfer.285.495
r3rqk1/1p1b1pb1/p2p1npp/P1pP4/2P5/2NB3P/1PQBRPP1/4R1K1/w Re2xRe8 Gelfer.286A.495
4rqk1/1p1b1pb1/p2p1npp/P1pP4/2P5/2NB3P/1PQB1PP1/4R1K1/w Re1b1! Gelfer.286B.495
(same as 286A only after 1 rook exch)
1r3r2/p2q2k1/3p1p1p/2p1pPp1/2PnP1PP/8/PP1QN1K1/1R5R/w Ne2c3! Gelfer.287.495
1qr3k1/pbrnppbp/1p3np1/PP1p4/3P4/1QN1PN2/1B2BPPP/R4RK1/w Pa5a6! Gelfer.291.495
1rb5/2pp1qpk/2p3pp/p1N1P3/P1PQ1P2/1P1R3P/6PK/8/w Pe5e6! Gelfer.292.495
1rbqnnkr/6b1/1p1p1ppp/pPpPp3/2P1P1PP/P1NBBPN1/2KQ4/6RR/w Pg4g5! Gelfer.293.495
r3nr1k/pp1bq1bn/3p1p1p/PPpPp1p1/2P1P3/3BN1NP/3B1PP1/R2QR1K1/w Pb5b6!
Gelfer.294.495
r3b1r1/4pkb1/1p1q1p1p/p1pPpPpP/P1P1P1P1/1P1BB3/5Q2/R5RK/w Pb3b4! Gelfer.295.495
1rbqk2r/5p1p/p1ppp1p1/4b3/4P3/2N3Q1/PPP2PPP/R1BR2K1/w Qg3xBe5! Gelfer.297.495
2br4/r2pknpp/p1pRpp2/8/N1P1PP2/6P1/PP2B2P/2KR4/w Pc4c5! Gelfer.298.495
1r2qr1k/2nbnpb1/p2p2pp/PppPp3/2P1P1PB/1P2N2P/2QNBP2/R3K2R/w Pb3b4!
Gelfer.299.495
5bk1/4pp2/B5p1/2r1P2p/P3PP1P/6P1/1R3K2/8/w Pe5e6! Gelfer.300.495
3r4/4bk1p/1p3pp1/p1p1pP2/3pK1PP/BP1P4/P2P4/2R5/b Ph7h5! Gelfer.303.495
r4rk1/ppp1p1bp/1nnq2p1/2Q1Pp2/3P4/4BP1P/PP2NP2/2KR1B1R/b Qd6d5! Gelfer.304.495
after e5
r1rq1bk1/1n1b1p1p/3p1np1/1p1Pp3/1Pp1P3/2P1BNNP/R2Q1PP1/1B2R1K1/w Be3a7!
Gelfer.305.495
4n3/1b3k1p/p2p2p1/3Pp3/2P3P1/6PP/2BB4/6K1/w Pg4g5! Gelfer.308.495
r1bq1rk1/ppp1bppn/3p3p/4pP2/2BnP1PP/2NP1N2/PPP5/R1BQK2R/w Pg4g5! (h5? would be
wrong) Gelfer.309.495
1n6/4k2p/p3ppp1/1pPp4/3P1PP1/3NP3/P3K2P/8/w Pf4f5! Gelfer.311.495
r4rk1/pb2qppp/1p1p1b2/3Pp3/2PpP3/1P3NP1/P1Q2PBP/R2R2K1/w Bg2h3! Gelfer.317.495
r2qk2r/pb1p1pb1/1p4p1/3np2p/2PpP2P/P2P2P1/1P3PB1/1RBQK2R/w Pe4xNd5!
Gelfer.318.495
5b2/ppk2pp1/4p2p/2p1P2P/q1P1Q3/P3B1P1/1P3P2/2K5/w Qe4f4! Gelfer.320.495
3bn3/pk3pp1/1pq1p2p/7P/2P3P1/1PB5/P1K1QP2/4N3/w Qe2f3! Gelfer.322.495
1k6/p1q1npp1/1p2p2p/2p1P2P/2P2P2/3QB1P1/PP6/2K5/b Pg7g6! Gelfer.323.495
1k2r3/1ppr2pp/p1p2p2/5R2/4P3/1P1P3P/P1P3P1/5RK1/w Pg2g4! Gelfer.327.495
8/3b4/5k2/2pPnp2/1pP4N/pP1B2P1/P3K3/8/b Pf5f4! Gelfer.330.495
r4rk1/1pq1bppp/p5b1/P1pPp3/2P5/4B3/1P2BPPP/2RQ1RK1/w Pb2b4! Gelfer.333.495
2r2rk1/pb1n1ppp/1ppqp3/8/2PPQ3/1P3NP1/P4PBP/R2R2K1/w Pc4c5! Gelfer.336.495
r4rk1/1q1n1pp1/4b2p/p1pp4/8/Q2NP3/PP2BPPP/R4RK1/b Pc5c4! Gelfer.338.495
2kr3r/pbqnbp2/1p2p3/2ppP2p/PP3B1p/2PBPN2/5PP1/R2Q1RK1/b Pc5c4! Gelfer.339.495
2b3k1/p3rp1p/2p5/3p1p1n/N6P/P2B4/1PP3P1/2KR4/w Kc1d2! Gelfer.342.495
2r5/p4p2/1bk5/4RpBp/7P/P7/1P6/1K6/b Pf7f6! Gelfer.344.495
6k1/2p3np/1p1p2p1/3P4/1PPK1R2/6PB/7P/4r3/w Bh3e6+! Gelfer.345.495
8/p3kr2/1p5R/2p2p2/2P2P2/P2P4/4K3/8/w Pd3d4! Gelfer.346.495
r2qrnk1/pp3bpp/1bp2p2/1P1p4/3P1P2/3BNNP1/P1Q2P1P/R4RK1/b Bf7h5! Gelfer.351.495
r4rk1/pp3ppp/2pnpn2/2Pp1b2/3P4/1N1BPNP1/PP3PP1/2R2RK1/w Bd3a6! Gelfer.352.495
2rr2k1/1bq1bpp1/pp1ppnn1/7p/P1P1PP2/1PN2NPP/1B2Q1B1/R2R2K1/b Pd6d5!
Gelfer.353.495
r1b2rk1/2qnppbp/3p2p1/2pPP3/p1N2P1P/2B3P1/PP6/R2QRBK1/b Nd7b6! Gelfer.354.495
1r2k2r/1pbn2p1/p1p1p3/2P2pq1/Q2Pp3/P3P1P1/1P1BB2P/2KR3R/w Be2xPa6!
Gelfer.355.495
4r1k1/q1r2ppp/p2R2n1/1p2p3/4Q3/1P2P1B1/P4PPP/3R2K1/w Ph2h4! Gelfer.356.495
8/4k2p/3n1p2/3p1p2/2p5/r3PPP1/P1R1BK1P/8/b Pf5f4! Gelfer.357.495
2r3k1/5p1p/4b1p1/2q5/4PPP1/p6P/P2RQ1BK/8/b Pg6g5! Gelfer.358.495
5R2/ppk5/2p1p1rp/6n1/1BPP2P1/P7/1P6/2K5/w Bb4a5+! Gelfer.359.495
1n3rk1/8/pp3p2/3p2pp/3P4/2R5/PP3PPP/4NK2/w Ph2h4! Gelfer.360.495
7k/8/5r2/8/3R4/8/8/K1B5/w Bc1b2! Gelfer.362.495
6rk/1b4rp/2q2n2/p1n5/4p2Q/1PN2N2/1BP1R3/K3R3/w Nc3xPe4! Gelfer.363.495
1q6/2b2p1p/7k/8/1p1Q4/8/1K3B2/8/w Qd4f6+! Gelfer.364.495
6k1/pp1q3p/2p3p1/5b2/4p3/2B1P1P1/PP4PP/3Q2K1/w Qd1e1! Gelfer.366.495
5rk1/1q2b1pp/pp1pp3/2p2p2/2PP4/1P1QPbP1/PB1R1P1P/4R1K1/b Qb7c8! Gelfer.367.495
after Re1
3r1r1k/1b4p1/pb5p/2ppPp1q/2p1nP2/2P1BN1N/PPQ3PP/3R1R1K/b Pd5d4! Gelfer.368.495
r1r3k1/1b2bppp/p3p3/1p1q4/P2Pn3/2PB1N2/1B2QPPP/2R2RK1/b Ne4g5! Gelfer.369.495
r2r4/1p3pkp/2p1q3/p2nP3/4p1PQ/2B1P3/bP2B2P/3R1RK1/w Rd1xNd5! Gelfer.371.495
r1bq1rk1/1p2bppp/p3p3/n3P3/4N3/1P1P1N2/PB4PP/R3QR1K/w Ne4f6+! Gelfer.372.495
3q1rk1/4bppp/1np1pn2/3p4/5P2/1N1P2P1/1BP1QPBP/R5K1/w Pf4f5! Gelfer.373.495
5rk1/1pq1ppbp/2rp2p1/pQ6/P1P1P2P/1P2BP2/6P1/2KR3R/b Rc6c5! Gelfer.374.495
3q1rk1/1bppbppp/p4n2/Q3N2r/6P1/P1N2P2/1PP4P/R1B1R1K1/b Nf6xPg4! Gelfer.376.495
2r3k1/pbr1q2p/1p2p1p1/5P2/3Pp3/1P2R3/PB1Q2PP/5RK1/w Pf5xPg6! Gelfer.377.495
r4r2/p2pq1kp/1pn2p2/2p5/2b1PP2/4Q1P1/PB4BP/R2R2K1/w Pe4e5! Gelfer.378.495
r4rk1/1b1n1pb1/3p2p1/1p1Pq1Bp/2p1P3/2P2RNP/1PBQ2P1/5R1K/w Ng3xPh5!
Gelfer.379.495
1r1q1rk1/1ppb4/6np/1P1P1pb1/2P1p1p1/1Q2P1P1/1B1N1RBP/5RK1/w Nd2xPe4!
Gelfer.380.495
rn4k1/p1q3bp/2b1r1p1/3ppp2/2N1n3/1P3NP1/PB2PPBP/2RQ1RK1/w Nc4xPe5!
Gelfer.381.495
r1bq1rk1/pp4bp/3p2p1/n1pP1P2/2P1p1n1/1PN3P1/P2N1PBP/R1BQ1RK1/w Pf5f6!
Gelfer.382.495
2r1r1k1/5pbp/p5p1/3Pn3/3QP3/N1B5/PP4qP/1K1R3R/b Rc8xBc3! Gelfer.383.495
2rq1rk1/1p1bppbp/p2p2p1/2n2P2/2P1P3/1PN3P1/PB1Q2BP/R4RK1/w Pf5f6! Gelfer.384.495
r2q1rk1/pp5p/2n1bnp1/2pNpp2/1bP5/1P1BP1N1/PB3PPP/R2Q1RK1/w Pf2f4! Gelfer.385.495
r2r2k1/pbq2pbp/1p2p1p1/n1p5/3PPP2/2PBB2P/P3NQP1/2R2RK1/b Pf7f5! Gelfer.386.495
1r3rk1/p1q2pbp/1p2n1p1/1Pp1p3/2P5/6P1/1PP2PBP/R1BQR1K1/w Pc2c3! Gelfer.387.495
2q2rk1/r4pb1/ppppb1p1/4pn1p/PPP5/2NP2PP/3BPPB1/1R1QK2R/w Pb4b5! Gelfer.388.495
5r1k/1b1q3p/1p2ppp1/p2n1n2/3P3P/P5NQ/1Pr2PP1/1BBRR1K1/b Rc2xBc1! Gelfer.389.495
6k1/1br3p1/4p2p/2b3q1/8/1Q4P1/P1R2P1P/2R3K1/b Bc5xPf2+! Gelfer.390.495
4r3/4b2k/5R2/3p1P1q/pP2p1pP/P5P1/1B2Q2K/8/w Qe2a6! Gelfer.391.495
rn3rk1/ppp5/3b3p/6pq/2P1R1b1/5NP1/PP1B1PBP/R2Q2K1/w Bd2c3! Gelfer.392.495
2r3k1/r1q1bp1p/ppbppnp1/8/2P1PP2/1PN5/PBB1Q1PP/3R1RK1/w Pf4f5! Gelfer.394.495
1q1r1rk1/1b2bp1p/ppnppnp1/8/2PNPP2/1PN2R2/PBB3PP/2RQ3K/w Nc3d5! Gelfer.395.495
4r1k1/pp1r1p1p/5bp1/3B1q2/8/1Q4P1/PP1R1P1P/R5K1/b Bf6g5! Gelfer.396.495
r4rk1/1bqnbppp/p2p1n2/1p2pP2/4P1P1/PNN2B2/1PP1Q2P/R1B2RK1/b Pd6d5!
Gelfer.397.495
1r3rk1/1bq1bppp/ppnppn2/8/P3PPP1/1NN2B2/1PPQ3P/R1B2R1K/b Pd6d5! Gelfer.398.495
r2q4/pp3rk1/5pp1/3b4/3P3P/3Q2B1/PP3P2/R1R3K1/w Ph4h5! Gelfer.399.495
2q5/2pp4/3pr3/4pb2/K1p2pn1/2bn1kp1/3pr1R1/6BB/w Rg2f2+! Gelfer.400.495
r4rk1/1b2bppp/ppq1p3/2ppB2n/5P2/1P1BP3/P1PPQ1PP/R4RK1/w Bd3xPh7+! Gelfer.401.495
3qr1k1/1br2ppp/p2b4/8/PpNp4/3P4/1PP2PPP/R1BQ1RK1/b Bd6xPh2+! Gelfer.402.495
3r1rk1/bpq2ppp/p1b1p3/2P5/1P2B3/P4Q2/1B3PPP/2R2RK1/w Be4xPh7+! Gelfer.403.495
3r1rk1/p3qp1p/2bb2p1/2pp4/8/1P2P3/PBQN1PPP/2R2RK1/b Pd5d4! Gelfer.404.495
r1b2rk1/2qpbppp/p1p1p3/2Pn4/N2B1P2/3B4/PP4PP/R2Q1RK1/w Na4b6! Gelfer.405.495
r2qkb1r/n1pp1pp1/4p1bp/1p6/1P1P3P/P3P1P1/1B1N1P2/R2QKB1R/w Pd4d5! Gelfer.406.495
r1bq1rk1/2p2pb1/2Pp1np1/1N5p/1P6/1Q4PP/1B3PB1/3RR1K1/w Nb5xPd6! Gelfer.408.495
1r1b2k1/rp1R1p1p/5np1/p1pPp3/P1P1P3/R4PPB/1P1B3P/6K1/w Rd7xBd8+! Gelfer.409.495
r6r/1ppkBpp1/5np1/p2PR3/2P5/3R4/P1P2P1P/2K5/w Pd5d6! Gelfer.410.495
2rr2k1/1b3ppp/pb2p3/1p2P3/1P2BPnq/P1N3P1/1B2Q2P/R4R1K/b Rc8xNc3! Gelfer.411.495
r1b2rk1/ppp2p2/6p1/4P2p/1n4qP/3BQ3/PBP5/2KR3R/w Pe5e6! Gelfer.412.495
4rnk1/2qn2p1/p3b2p/1pp1N3/2P5/4P1Q1/PB4PP/1B3RK1/w Qg3xPg7+! Gelfer.413.495
2rq1rk1/pb3ppp/1p2p3/n7/1b1PP3/3B1N2/PB2QPPP/3R1RK1/w Pd4d5! Gelfer.414.495
4r1k1/p1p2ppp/b2b4/3p1q2/8/P3B1P1/1PP2P1P/RN1Q2K1/b Re8xBe3! Gelfer.415.495
6rk/8/pq1p3b/1p1bp2P/1P6/2P3NP/2R2Q1K/4R3/b Rg8xNg3! Gelfer.416.495
r2qr1k1/p4pbp/bp4p1/3p4/8/BPN1n1P1/P2QN1BP/R2R2K1/b Ne3xBg2! Gelfer.417.495
4rb1r/Pkppq1pp/b1p5/4P3/4QB2/1N6/PP4PP/R3K2R/b Qe7h4+! Gelfer.418.495
1r4k1/5p2/p5pp/2pP1b2/3b4/q1N2P2/PPR3PP/K3Q2R/b Rb8xPb2! Gelfer.419.495
r4rk1/ppp3bp/3p4/3Ppb2/2P4q/3B1P2/PP3n1P/R2Q1RK1/b Pe5e4! Gelfer.420.495
r2qr2k/pbp3pp/1p2Bb2/2p5/2Pp1P2/6P1/PP2Q1NP/3R1RK1/b Pd4d3! Gelfer.422.495
5q1k/ppp2Nbp/2np2p1/3B1b2/2PP4/4r1P1/PP1Q3P/R5K1/b Qf8xNf7! Gelfer.423.495
1r3rk1/pbpn2qp/1p1p1np1/3P1p2/1P5N/5PPB/PB5P/2QR1RK1/w Bh3xPf5! Gelfer.424.495
r3rnk1/ppp1q2p/3p2p1/3P1p1n/2P1p3/P1B1P1P1/1PQ2PBP/3R1RK1/w Pf2f3!
Gelfer.425.495
3rr1k1/pb1nqppp/3b1n2/2pp4/8/1PQBPN2/PB1N1PPP/2RR2K1/b Pd5d4! Gelfer.427.495
1rb1r1k1/p1p1qppp/2pb4/8/2P3n1/4P1P1/PB2BP1P/R1QN1RK1/b Ng4xPh2! Gelfer.428.495
2r2rk1/pbq1bppp/1p2p3/n7/2PP4/P2B1N2/1B2QPPP/3R1RK1/w Pd4d5! Gelfer.429.495
6k1/p1nb3p/3p2qn/2pP1p2/P4P2/3B2N1/2Q3PP/4B2K/b Nc7xPd5! Gelfer.430.495
r2q1rk1/pb2bppp/1p2pn2/3pP3/5P2/P1NPBN2/1P4PP/R2Q1R1K/b Pd5d4! Gelfer.431.495
3rrnk1/ppq2pb1/2p1p3/5p1p/2PP3P/1PB2NP1/PQ2RP2/4R1K1/w Pd4d5! Gelfer.432.495
r3k2r/p1qnbpp1/1pb1p2p/2p5/3PP3/P1PB1N2/2Q2PPP/R1BR2K1/w Pd4d5! Gelfer.433.495
1rb1r1k1/3n1ppp/p1p1p3/q3P3/7P/2N1Q1R1/PPP3P1/2KR1B2/w Rd1xNd7! Gelfer.434.495
r1rb1nk1/1q1b1pp1/3p3p/n2Pp2N/1p2P3/1P1BBQ1P/R2N1PP1/R5K1/w Ra2xNa5!
Gelfer.435.495
2r2rk1/1pq1bppp/p2pbn2/8/P3PR2/2NQB3/1PP1B1PP/5RK1/w Rf4xNf6! Gelfer.436.495
2r3k1/2q2pp1/Bp2p1n1/3p1n2/PQ1P3p/2PN2P1/5PKP/4R3/b Qc7xPc3! Gelfer.437.495
r3k2r/pb3ppp/1q1ppb2/8/np1NPPP1/2P2Q2/PPB1N2P/2KRR3/b Na4xPb2! Gelfer.438.495
r2q1rk1/pp4pp/5p2/4pb2/1PPp3Q/P1n1PP2/3R2PP/4KBNR/b Pd4xPe3! Gelfer.439.495
rq2k2r/1p1bppbp/3p2p1/pNnP4/4P3/4BP2/PP1Q2PP/2R1KB1R/w Rc1xNc5! Gelfer.441.495
r2qk2r/pp1nbp1p/2p1b1p1/3pP3/1n1P1B2/PQN2P2/1P4PP/2KR1BNR/b Pa7a5!
Gelfer.442.495
r3kb1r/pp1bpppp/1qp2n2/8/3P4/2NQ4/PP1BPPPP/R3KB1R/b Pe7e5! Gelfer.443.495
rnbr2k1/ppq1ppbp/6p1/2PN4/8/4P3/PP1Q1PPP/2R1KBNR/b Rd8xNd5! Gelfer.444.495
r1b2rk1/pp2bppp/2n1pn2/q2p4/2P2B2/P1N1PN2/1PQR1PPP/4KB1R/b Nf6e4! Gelfer.445.495
rnbqk2r/ppp2ppp/5n2/3P4/1b2pP2/2NP4/PPPB2PP/R2QKBNR/b Pe4e3! Gelfer.446.495
r3kb1r/3qpppp/p1p5/3pP3/Q3b3/5N2/PPP2PPP/R1B2RK1/w Pe5e6! Gelfer.447.495
r2qkb1r/1b3ppp/p3pn2/1p6/1n1P4/1BN2N2/PP2QPPP/R1BR2K1/w Pd4d5! Gelfer.448.495
3r2k1/pr3p2/3p4/2p1ppq1/2Pn4/1PNQ2P1/P4RKP/5R2/w Rf2xPf5! Gelfer.449.495
r1q1r1k1/p2p1ppp/1pn5/2pR4/Q1P5/2P1N1P1/P3PP1P/R5K1/b Re8xNe3! Gelfer.451.495
r3kr2/pp2bpp1/2b4p/q3p3/2B1p1PP/1Q2B3/PPP2P2/2KR2R1/w Rd1d5! Gelfer.452.495
r4b1r/pp1q1kp1/2p1p1p1/5nPp/2BP3P/2P2R2/PPQ2P2/R1B1K3/w Rf3xNf5+! Gelfer.453.495
r3r1k1/q4p1p/p2p2p1/2nP4/2R1PP2/1p1B3P/1P1Q2PK/2R5/w Rc4xNc5! Gelfer.455.495
2r5/1p1k1p2/p2p2p1/P1PPnp1p/1P1K1N1P/5P2/4R1P1/8/w Re2xNe5! Gelfer.456.495
8/3r3p/1p4p1/p1k2p2/P1PNp3/1P1nP3/4K1PP/R7/b Rd7xNd4! Gelfer.457.495
2q1rbk1/5ppp/3p1n2/1pr1p3/2P5/1P2P1P1/2R1NPBP/1Q1R2K1/w Ne2c3! Gelfer.458.495
r3r1k1/1pqn1pbp/p2p2p1/3P4/1RP5/4B3/P3BPPP/3Q1RK1/b Re8xBe3! Gelfer.459.495
r2q1rk1/3n1pp1/p2B1b1p/2p5/Pp2P3/1P3P2/R1B2P1P/1Q2R1K1/b Bf6e5! Gelfer.460.495
r4r1k/3qb1pp/4P3/1p1B4/p2PpPb1/4B3/1P5P/R2Q1RK1/b Bg4xPe6! Gelfer.462.495
r4rk1/pp2p1bp/4b1p1/8/2qP4/1Q2BB2/PP3PP1/R3K2R/b Rf8xBf3! Gelfer.463.495
3b1rk1/r3q1np/p2pPppB/2p1p3/Q1P1P1P1/P4RNP/5P2/1R4K1/w Ng3f5! Gelfer.464.495
1r6/q5pk/3p1p1p/p1pPpP1P/PrBnP1P1/1PQ5/1R4K1/1R6/b Rb4xBc4! Gelfer.465.495
r3r1k1/2q2p1p/p1p2np1/2b1n3/1NPRp3/1PB1N1Pb/P3PP1P/Q2R2KB/w Nb4c2!
Gelfer.466.495
3n2k1/p2q1rpp/1pn1p2P/3pPp1N/1BrP4/P2Q2R1/2P2PP1/R3K3/b Pg7g6! Gelfer.467.495
r4rk1/pp3pp1/3R1bbp/2q1B3/2B5/1P6/P3QPPP/4R1K1/w Rd6xBf6! Gelfer.468.495
r4rk1/1bq2ppp/p4b2/3ppP2/2P1P3/1P2BQ2/2P1N2P/R4RK1/w Pe4xPd5! Gelfer.469.495
3rq1k1/4rppp/2n3b1/pp2P3/2pP1QB1/P1P1R3/1B4PP/4R1K1/b Re7e6! Gelfer.471.495
r2q1rk1/6bn/p2p2p1/1b1Pp1Pp/pP2P3/4BP2/PN1Q2B1/2R1K2R/b Rf8f4! Gelfer.472.495
rn1q1rk1/pp3ppp/2p1p3/5b2/PbBPn3/2N1PN2/1P2QPPP/R1B2RK1/w Bc4d3! Gelfer.473.495
1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1/b Rd8d4!
Gelfer.474.495
4rrk1/pp4bp/2nq2p1/3p3n/3p1p2/1QP2B2/PP1B1PPP/R1N1R1K1/w Nc1d3! Gelfer.475.495
after ...exd4
r3rbk1/1pqb3p/2ppn1p1/p1n2p2/2PNP3/PPN1B1P1/2Q2PBP/3RR1K1/w Nd4xPf5!
Gelfer.476.495
2r2rk1/pb3pp1/1p2pq1p/3n4/1n1PR3/2P2N2/P2B1PPP/RBQ3K1/b Rc8xPc3! Gelfer.477.495
2rq1rk1/1p1bbppp/p2ppn2/8/Pn1NPP2/2N1B1Q1/1PP1B1PP/R4R1K/b Rc8xNc3!
Gelfer.479.495
2rr2k1/1bqnbppp/p2ppn2/1p6/4P3/PNN1BPQ1/1PPRB1PP/5RK1/b Pd6d5! Gelfer.480.495
2rq1rk1/pb2bppp/1p1ppn2/n5P1/3NPP2/1BN1BQ2/PPP4P/R4RK1/b Rc8xNc3! Gelfer.481.495
r1b2r1k/ppq3n1/2p1nb2/2P1p1pp/1PB1Pp2/P1N2N1P/1BQ2PP1/3RR1K1/w Nc3d5!
Gelfer.483.495
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b/w Ph2h4! Gelfer.484.495
3r2k1/p4r2/1p1P1q2/3QpPp1/1P1pP1Pp/7P/P5K1/3R1R2/w Rd1xPd4! Gelfer.485.495
rn3rk1/pb4pp/1p1q4/2pPp3/2P1Pp2/2PN4/P1Q3PP/R1B2RK1/w Bc1xPf4! Gelfer.486.495
4r1k1/4rp1p/1pp3p1/p2p1nq1/3P2P1/1P2PP2/P4QNP/4RRK1/b Nf5xPe3! Gelfer.487B.495
same as 487A after g4?
4rbk1/1r1n1p1p/2b1p1p1/q2p4/P1pP4/2N3PP/1Q1BPPB1/1R3RK1/w Qb2xRb7!
Gelfer.490.495
4rr1k/2pqn1bp/1pNp4/1P1b1pp1/3N4/1Q2PRP1/1B4BP/R5K1/w Nd4xPf5! Gelfer.491.495
r1b2rk1/1p2ppbp/6p1/np2P3/n1pN4/P1N3P1/1BP2PBP/2KRR3/w Nc3xNa4! Gelfer.495.495

6b1/p1k4p/1pp1pp2/3p4/3P1P2/2P1P3/PP1N3P/2K5/w Pe3e4? (which gets clobbered by
e5!) Gelfer.24.495
2k5/5p1p/1np1p3/p3p3/1P2P3/P1K2P2/6PP/5B2/b Pa5a4,Pa5xPb4+? Gelfer.23.495 after
b4
8/2Bn1kp1/pp2pp1p/2p4P/P1P5/1P2PP2/6P1/6K1/b Pa6a5? (the previous move was Bc7!
This is a horrible ?? blunder.) Gelfer.26.495
r1bqk2r/pp3ppp/2n1p3/1BP1P3/1b1p4/2N2N2/2P2PPP/R1BQK2R/w Bb5xNc6+!?
(previously, black should have played ...Bd7 instead of ...Nc6?) Gelfer.61.495
1rq3k1/4rpb1/2p3p1/4p1Pp/1p2P3/pPP2Q1P/P1B2P2/2KR3R/w Pc3c4?,Bc2d3  (Bd3
planning Bc4 is better than c4??, which is "suicide".) Gelfer.99.495
4k3/7R/r1P5/2K5/8/p7/8/8/b Pa3a2?  (black should have moved ...Kd8
Gelfer.126.495 after Kc5
3q4/5pk1/1r2p1p1/1PQ5/8/7P/5P2/1R4K1/b Qd8d6? is refuted by Qxd6!
Gelfer.139.495
6r1/1p3k2/2p2p1p/PpP2P2/3P4/2K4P/4R3/8/b Rg8e8?,Rg8g1,Rg8g3+ Gelfer.148.495
4b3/pp2kp1p/5bp1/8/8/4P3/PP2NPPP/3N2K1/w Nd1c3?,Kg1f1 Gelfer.157.495
8/ppp2kpp/n3r3/5p2/2RPpP2/P3P3/1P3PBP/6K1/b Pb7b5? was too loosening; ...c6 was
more to the point. Gelfer.185.495
8/5p1k/3p1bpp/2pP4/2P5/5NP1/r4PP1/2R3K1/w Kg1f1? Gelfer.186.495
8/1p2k3/p1rprp2/P2Rn1p1/3RP2p/2P4P/1P2BKP1/8/b Ke7d8?,Ne5g6  Gelfer.208.495
2r1r1k1/pp1b1ppp/5n2/2p1q3/P7/2PBPP2/2Q3PP/R1B1R1K1/b Pc5c4? Gelfer.229.495
r4rk1/6pp/pq6/5p2/Pn6/1p2P3/1P2QPPP/R1BR2K1/b Nb4c2?,Ra8c8 Gelfer.230.495
r3k2r/ppq2p1p/2n1p1p1/3pPn2/5P2/2PQB3/PP2N1PP/3R1RK1/w Pg2g4? Gelfer.232.495
r3k2r/pppqn1pp/5p2/8/3P4/5N2/PP2QPPP/2R1R1K1/b Ke8f7,Pc7c6? Gelfer.240.495
r1bq1rk1/1pp3bp/3p2p1/p1nPpp1n/2P1P3/2NBBP2/PP1QN1PP/2KR3R/w Be3xNc5?
Gelfer.271.495 (this is a ?? blunder)
r1bq1rn1/pp1n2bk/3p2p1/3Pp1Pp/4P3/2N1BP1N/PP1QB3/R3K2R/w Pf3f4? black is badly
cramped but this would let him out. It is a ??. Gelfer.289.495
2n1kb1r/p2n1pp1/2p1p2p/3pP2P/3P1P2/4B1N1/PP2N1P1/5K1R/b Pc6c5,Pf7f5?
Gelfer.306.495
5rk1/p1p1rppp/bp1p4/3Pp3/2P1PnPP/1P1BKP2/P3N2R/3R4/b Nf4xNe2,Nf4xBd3?
Gelfer.324.495
r1b1r3/pp3pk1/2p4p/4p1p1/P5P1/1P2R2P/2P1PPB1/2KR4/b Kg7f6?,Pa7a5 Gelfer.334.495
after a4
r6r/1p1k1p1p/2pn1pb1/p2p4/3P3N/2PBP1P1/P4P1P/2KR3R/w Nh4xBg6,Rh1e1?
Gelfer.335.495
3r2k1/4ppbp/2q3p1/p1p1P3/5P2/P1P1B1PP/6RK/1Q6/w Pc3c4,Rg2d2? Gelfer.340.495
4r1k1/1p3p1p/p2p2p1/P2P4/1P6/2Pn1B1P/6P1/R6K/w Kh1g1,Pc3c4? Gelfer.341.495
4r1k1/R3p2p/5np1/5p2/8/5PP1/4PB1P/5K2/b Pe7e6? was a stupid ?? blunder
Gelfer.361.495
1rb2qk1/p3p2p/1p1pPrp1/8/3N3Q/6P1/P4P1P/3RR1K1/w Pf2f4,Nd4c6? Gelfer.393.495
after ...b6
r1b2r1k/p6p/2Bp2p1/4b2q/3p4/1Q3P2/PP3NPP/R4RK1/w Pg2g3,Pf3f4? Gelfer.421.495
4rqk1/1p1n1pbp/p2p1np1/2pP4/P1P5/2N1B2P/1PQ1BPP1/R5K1/w Pg2g4? Gelfer.461.495
after ...Qf8 this was a ?? blunder
2r1k2r/1p2bppp/p2pbn2/q3p3/4P1P1/2N2P2/PPP2B1P/2KRQB1R/w Pa2a3,Kc1b1?
Gelfer.482.495
4r1k1/4rp1p/1pp3p1/p2p1nq1/3P4/1P2PPP1/P4QNP/4RRK1/w Ng2f4,Pg3g4?  (the try g4?
met with ...Nxe3!) Gelfer.487A.495
r2r2k1/pbn1qpp1/1p5p/2ppN2P/QP1P4/P1R1P1P1/5PB1/2R3K1/b Pc5c4? Gelfer.488.495
(...b5 is correct, but allows white to make a "daunting" positional sac Rxc5!.
The present move is a ?? blunder)


Positions from HORT AND JANSA: "The best move" RHM Press NY 1980.

Contributed by Hans Berliner, partially checked by him and HITECH.
Note: all analysis is due to Berliner, HITECH, and/or Hort+Jansa. In 4
cases so far Berliner/HITECH have found errors in H+J's solution.
("Books are full of errors," says Berliner, in the same breath adding
that he thinks H+J is an "excellent" book...) There also seem to be
plenty of typos in this file, presumably corresponding to cases
berliner has not gotten to checking yet (or berliner has caused his
own typos?)  namely:

Possible typos and BUGS:
move d1a1  illegal; 0 matches; HJ.T25  I fixed this to be d1h1, which I think is
correct
move e7d6  illegal; 0 matches; HJ.010
move f3e5  illegal; 0 matches; HJ.021  I fixed to be f4xe5, think this is
correct
move e3c3  illegal; 0 matches; HJ.025

HJ.053 has no indicated solution!! I do not understand Berliner's analysis line
for it!

neither do
 HJ.M02 HJ.M03 HJ.M04 HJ.M05 HJ.M06 HJ.M07 HJ.M08 HJ.M09 HJ.M10
have solutions typed in.

At present I am incapable of fixing these bugs since I cannot obtain a
copy of the H+J book. I would sure appreciate it if somebody who has a
copy of the book would figure out what is going on here. Berliner says
he is too busy to help.

Note our 3-field forsythe format. The first position has: white on move
(note the "/w") and solution (2nd field) is d5. Label (the 3rd field)
is "HJ.A01".

POSITIONS START:

3r1k2/4npp1/1ppr3p/p6P/P2PPPP1/1NR5/5K2/2R5/w Pd4d5 HJ.A01
2q1rr1k/3bbnnp/p2p1pp1/2pPp3/PpP1P1P1/1P2BNNP/2BQ1PRK/7R/b Pf6f5 HJ.A02
rnbqkb1r/p3pppp/1p6/2ppP3/3N4/2P5/PPP1QPPP/R1B1KB1R/w Pe5e6 HJ.A03
r1b2rk1/2q1b1pp/p2ppn2/1p6/3QP3/1BN1B3/PPP3PP/R4RK1/w Nc3d5,Pa2a4 HJ.A04
2r3k1/pppR1pp1/4p3/4P1P1/5P2/1P4K1/P1P5/8/w Pg5g6 HJ.A05
1nk1r1r1/pp2n1pp/4p3/q2pPp1N/b1pP1P2/B1P2R2/2P1B1PP/R2Q2K1/w Nh5f6 HJ.A06
4b3/p3kp2/6p1/3pP2p/2pP1P2/4K1P1/P3N2P/8/w Pf4f5 HJ.A07
2kr1bnr/pbpq4/1pn1pp2/3p3p/3P1P1B/2N2N1Q/PPP3PP/2KR1B1R/w Pf4f5 HJ.A08
3rr1k1/pp3pp1/1qn2np1/8/3p4/PP1R1P2/2P1NQPP/R1B3K1/b Nc6e5 HJ.A09
2r1nrk1/p2q1ppp/bp1p4/n1pPp3/P1P1P3/2PBB1N1/4QPPP/R4RK1/w Pf2f4 HJ.A10
r2q1rk1/4bppp/p2p4/2pP4/3pP3/3Q4/PP1B1PPP/R3R1K1/w Pb2b4 HJ.A11
r1bqkb1r/4npp1/p1p4p/1p1pP1B1/8/1B6/PPPN1PPP/R2Q1RK1/w Nd2e4 HJ.A12
r2q1rk1/1ppnbppp/p2p1nb1/3Pp3/2P1P1P1/2N2N1P/PPB1QP2/R1B2RK1/b Ph7h5 HJ.A13
r1bq1rk1/pp2ppbp/2np2p1/2n5/P3PP2/N1P2N2/1PB3PP/R1B1QRK1/b Nc5b3 HJ.A14
r4k2/pb2bp1r/1p1qp2p/3pNp2/3P1P2/2N3P1/PPP1Q2P/2KRR3/w Pg3g4 HJ.A15
r1bqk2r/pp2bppp/2p5/3pP3/P2Q1P2/2N1B3/1PP3PP/R4RK1/b Pf7f6 HJ.A16
r2qnrnk/p2b2b1/1p1p2pp/2pPpp2/1PP1P3/PRNBB3/3QNPPP/5RK1/w Pf2f4 HJ.A17
3r1k2/4npp1/1ppr3p/p6P/P2PPPP1/1NR5/5K2/2R5/w Pd4d5 HJ.P01
2q1rr1k/3bbnnp/p2p1pp1/2pPp3/PpP1P1P1/1P2BNNP/2BQ1PRK/7R/b Pf6f5 HJ.P02
rnbqkb1r/p3pppp/1p6/2ppP3/3N4/2P5/PPP1QPPP/R1B1KB1R/w Pe5e6 HJ.P03
2r3k1/pppR1pp1/4p3/4P1P1/5P2/1P4K1/P1P5/8/w Pg5g6 HJ.P04
4b3/p3kp2/6p1/3pP2p/2pP1P2/4K1P1/P3N2P/8/w Pf4f5 HJ.P05
2kr1bnr/pbpq4/1pn1pp2/3p3p/3P1P1B/2N2N1Q/PPP3PP/2KR1B1R/w Pf4f5 HJ.P06
2r1nrk1/p2q1ppp/bp1p4/n1pPp3/P1P1P3/2PBB1N1/4QPPP/R4RK1/w Pf2f4 HJ.P07
r2q1rk1/4bppp/p2p4/2pP4/3pP3/3Q4/PP1B1PPP/R3R1K1/w Pb2b4 HJ.P08
r2q1rk1/1ppnbppp/p2p1nb1/3Pp3/2P1P1P1/2N2N1P/PPB1QP2/R1B2RK1/b Ph7h5 HJ.P09
r4k2/pb2bp1r/1p1qp2p/3pNp2/3P1P2/2N3P1/PPP1Q2P/2KRR3/w Pg3g4 HJ.P10
r1bqk2r/pp2bppp/2p5/3pP3/P2Q1P2/2N1B3/1PP3PP/R4RK1/b Pf7f6 HJ.P11
r2qnrnk/p2b2b1/1p1p2pp/2pPpp2/1PP1P3/PRNBB3/3QNPPP/5RK1/w Pf2f4 HJ.P12
8/p1q2pkp/2Pr2p1/8/P3Q3/6P1/5P1P/2R3K1/w Qe4e5+,Qe4f4 HJ.T01
r1bqr1k1/pp1nb1p1/4p2p/3p1p2/3P4/P1N1PNP1/1PQ2PP1/3RKB1R/w Nc3b5 HJ.T02
r3r1k1/pppq1ppp/8/8/1Q4n1/7P/PPP2PP1/RNB1R1K1/b Qd7d6 HJ.T03
r1b1qrk1/2p2ppp/pb1pnn2/1p2pNB1/3PP3/1BP5/PP2QPPP/RN1R2K1/w Bg5xNf6 HJ.T04
r4rk1/1bn2qnp/3p1B1Q/p2P1pP1/1pp5/5N1P/PPB2P2/2KR3R/w Pg5g6 HJ.T05
2k4r/1pr1n3/p1p1q2p/5pp1/3P1P2/P1P1P3/1R2Q1PP/1RB3K1/w Rb2xPb7 HJ.T06
r1bq4/1p4kp/3p1n2/p4pB1/2pQ4/8/1P4PP/4RRK1/w Re1e8 HJ.T07
6k1/6p1/2p4p/4Pp2/4b1qP/2Br4/1P2RQPK/8/b Be4xPg2 HJ.T08
3r2k1/p1rn1p1p/1p2pp2/6q1/3PQNP1/5P2/P1P4R/R5K1/w Nf4xPe6 HJ.T09
2rqrn1k/pb4pp/1p2pp2/n2P4/2P3N1/P2B2Q1/1B3PPP/2R1R1K1/w Bb2xPf6 HJ.T10
2b2rk1/p1p4p/2p1p1p1/br2N1Q1/1p2q3/8/PB3PPP/3R1RK1/w Ne5f7 HJ.T11
4r1k1/pq3p1p/2p1r1p1/2Q1p3/3nN1P1/1P6/P1P2P1P/3RR1K1/w Rd1xNd4 HJ.T12
3q1rk1/4bp1p/1n2P2Q/3p1p2/6r1/Pp2R2N/1B4PP/7K/w Nh3g5 HJ.T13
r1b2rk1/p4ppp/1p1Qp3/4P2N/1P6/8/P3qPPP/3R1RK1/w Nh5f6+ HJ.T14
4r3/1Q1qk2p/p4pp1/3Pb3/P7/6PP/5P2/4R1K1/w Pd5d6+ HJ.T15
3r3k/1r3p1p/p1pB1p2/8/p1qNP1Q1/P6P/1P4P1/3R3K/w Bd6f8,Nd4f5 HJ.T16
r1b2rk1/2q1b1pp/p2ppn2/1p6/3QP3/1BN1B3/PPP3PP/R4RK1/w Nc3d5,Pa2a4 HJ.T17
1nk1r1r1/pp2n1pp/4p3/q2pPp1N/b1pP1P2/B1P2R2/2P1B1PP/R2Q2K1/w Nh5f6 HJ.T18
2kr3r/pp1q1ppp/5n2/1Nb5/2Pp1B2/7Q/P4PPP/1R3RK1/w Nb5xPa7+ HJ.T19
8/p3k1p1/4r3/2ppNpp1/PP1P4/2P3KP/5P2/8/b Re6xNe5 HJ.T20
r4rk1/1p2ppbp/p2pbnp1/q7/3BPPP1/2N2B2/PPP4P/R2Q1RK1/b Be6xPg4 HJ.T21
5rk1/p5pp/8/8/2Pbp3/1P4P1/7P/4RN1K/b Bd4c3 HJ.T22
5bk1/1rQ4p/5pp1/2pP4/3n1PP1/7P/1q3BB1/4R1K1/w Pd5d6 HJ.T23
r1q2rk1/p3bppb/3p1n1p/2nPp3/1p2P1P1/6NP/PP2QPB1/R1BNK2R/b Nf6xPd5 HJ.T24
3r1rk1/pp1q1ppp/3pn3/2pN4/5PP1/P5PQ/1PP1B3/1K1R4/w Rd1h1 HJ.T25
8/6k1/5pp1/Q6p/5P2/6PK/P4q1P/8/b Qf2f1+ HJ.T26
2k1r3/1p2Bq2/p2Qp3/Pb1p1p1P/2pP1P2/2P5/2P2KP1/1R6/w Rb1xBb5 HJ.T27
6k1/p1B1b2p/2b3r1/2p5/4p3/1PP1N1Pq/P2R1P2/3Q2K1/b Rg6h6 HJ.T28
r2r2k1/1R2qp2/p5pp/2P5/b1PN1b2/P7/1Q3PPP/1B1R2K1/b Ra8b8 HJ.T29
2r1r1k1/pp1q1ppp/3p1b2/3P4/3Q4/5N2/PP2RPPP/4R1K1/w Qd4g4 HJ.T30
r1r2bk1/5p1p/pn4p1/N2b4/3Pp3/B3P3/2q1BPPP/RQ3RK1/b Bf8xBa3 HJ.T31
3r1rk1/p3qp1p/2bb2p1/2p5/3P4/1P6/PBQN1PPP/2R2RK1/b Bd6xPh2+ HJ.T32

2k2b1r/1pq3p1/2p1pp2/p1n1PnNp/2P2B2/2N4P/PP2QPP1/3R2K1/w Pe5xPf6 HJ.001 berliner
says soln is Qxf4; Nxe6,Nxe6; Qxe6,Kb8 (Kc7; Qd7+,Kb6; Qd8+); Ne2!,Qg4; Qe5+
r7/pp1n1pbk/3p1qpp/2pP1b2/2P1r3/3BBN1P/PP1Q1PP1/1R3RK1/w Be3g5 HJ.002 white_wins
1B2r3/p4k2/bpq3p1/3p1p1p/3P4/P1N2RQ1/1nPK1PPP/8/b Ba6e2 HJ.003
4r1k1/p5pp/2Q1pb2/4N3/P2p1P2/6P1/4q1KP/1R6/w Kg2g1 HJ.004 white_wins
r4rk1/1bp2ppp/p1nb4/1p2N3/P7/1BP4P/1P1B1PP1/R3R1K1/w Ne5xPf7 HJ.005 white_ahead
Nxf7,Rxf7; axb,Ne7(Ne5; Bf4); Bf4
4rrk1/pbq3p1/7p/Q4p2/2N1n3/3B3P/PBP2PPb/R4R1K/b Ne4g3+ HJ.006 Ng3+; fxg3,Qxg3;
Rf3 (Qd2,Qxh3; or Ne3,Qxh3; Bc4+,Kh7; Bd5,Qh4),B\xf3; gxf3;Bg1; Qd2,Bf2
8/2B2p1p/8/3K4/6k1/8/7P/8/b Pf7f5 HJ.007 f5; Ke5,f4; Ke4,f3; Ke3,h5; Kf2,h4;
Bd6,Kh3 equal
r3k2r/3bbp1p/p1nppp2/5P2/1p1NP3/5NP1/PPPK3P/3R1B1R/b Be7f8 HJ.008 black_ahead
3rk2r/2qbbppp/p7/2p2PP1/1pN2P2/1P6/P1PQ3P/2KRR3/w Qd2d6 HJ.009 Qd6,Qxd6;
Nxd6+,Kf8; Nb7 white_wins
r3k2r/1p1b1p2/p2bpnnp/q7/2BNP3/2N5/PPPQ2PP/3R1RK1/w e7d6 HJ.010 Nd5,Nxd5;
Qa5,Bb4; exd5,Bxa5; dxe6 equal ILLEGAL
r1r2k2/4bp1p/2p1b1p1/B2p4/5Pn1/1NPB4/PP4PP/R1R3K1/w Ba5b6 HJ.011 allegedly
black_ahead but berliner says after Bb6; h3! is better and white_ahead
2r2rk1/1p3pp1/q6p/3p4/pQ1bn3/P2NB2N/BP3PPP/1K1R4/b Bd4c3 HJ.012 Bc3!; Qb6,Nd2+;
Rxd2,Qxb6; Bxb6,Bxd2; Bxd5 white_ahead
r4r1k/p1n2pp1/4b2p/2ppP3/7Q/q1PB4/P3N1PP/1R3R1K/w Rf1f6 HJ.013 Rf6! Kg8; Rbf1
2kr1bnr/pbpq4/1pn1pp2/3p3p/3P1P1B/2N2N1Q/PPP3PP/2KR1B1R/w Pf4f5! HJ.014
white_ahead
r5k1/pp2q1p1/3bp2p/2p1p2Q/4Pr2/3P1N2/PPP3PP/R4RK1/w Nf3xPe5 HJ.015 Nxe5,Rh4;
Qg6,Bxe5; g3 white_wins
r3k2r/1b1nbppp/p2pp3/6P1/1q1NPP2/2N2Q1B/1PP4P/2KRR3/w Nc3d5 HJ.016 white_wins
3r2k1/p3b2p/3pbpp1/7R/1r2P3/1P1B2Q1/q5PP/B4R1K/w Rh5xPh7 HJ.017 white_wins
r1bq1r1k/5p1p/p1pp1npQ/1p2n3/2PNP1P1/2NB1P2/PP6/R3K2R/w Nd4xPc6 HJ.018
white_wins
rnbq2k1/pp2p1b1/5pQ1/3Np1pB/2Pp2P1/5N2/PP3PP1/R3K3/b Bc8e6 HJ.019
r1r5/pp2ppkp/2npbBp1/8/1q2P3/2NBQP2/PPP3PP/R4RK1/b Pe7xBf6 HJ.020 exf6; if Kxf6;
Qh6
4rr1k/p2qn1np/1p1p1ppb/2pPp3/2P1PP2/1P1N1QP1/1B2NRKP/5R2/w Pf4xPe5 HJ.021
white_wins fxe,fxe?; Qxf8+,Rxf8; Rxf8+,Ng8; Bxe5. Actually 1.-- dxe; Bxe5,Nef5!
was best defense.
3n2r1/k1p1bp2/1p6/pq1bPR2/2p2Q2/P3NN2/1P1B1P2/2K5/w Pe5e6 HJ.022 white_ahead
e6,Nxe6 (fxe; Qxc7+); Qe5
5Q2/pp1b2pk/1b1p2rp/2pP1p2/2P2P2/q1BB4/6PP/4R1K1/w Bc3xPg7 HJ.023 white_wins
Qxa3; Bxg7,Rxg7; Bxf5+,Bxf5; Qxf5+
r1bqk2r/pp2bppp/2p5/3pP3/P2Q1P2/2N1B3/1PP3PP/R4RK1/b Pf7f6,Bc8f5 HJ.024
berliner: f6!; Bf5! also works since g4 Bxg4; f5 h5 is not clear at all.
1r4k1/3bppb1/3p1n1p/q1rP4/4PP2/P1N1R3/B2Q1RPN/6K1/b e3c3 HJ.025 black_ahead
Rxc3,Nxe4; Rxc8+,Rxc8; Qxa5,Bd4 =3; Nc1! leads to white_ahead, but  1...Qxa3!
ILLEGAL
r5k1/5ppp/p5q1/Q3p1b1/R1Br4/8/1P3PPP/4R1K1/w Qa5xPe5 HJ.026 Qxe5,Rdd8; Rxa6
white_wins
2r2bk1/pprn1ppb/4p2p/3pP3/q2p2PP/3P1N1B/PPP1RP2/R1BQ2K1/b Rc7xPc2 HJ.027
allegedly equal but 1...Rxc2!!; Bf4 = 3, Bxd3!!; Qxd3,Rxe2; Qxe2,d3!
black_ahead.
r6k/pp3ppp/2p1p3/8/PPBrN1R1/7P/1Bn2PP1/6K1/b Pf7f5 HJ.028 f5; Bxd4,Nxd4;
Rh4,fxe4; Rxe4,Rd8; Bxe6 equal
8/P4pk1/2Np1b2/3P2p1/8/2p5/rr3RPP/5RK1/b Rb2xRf2 HJ.029 Rxf2; Rxf2,Rxa7;
Nxa7,Bd4 black_wins
8/R6R/1p1r1kp1/5r2/7P/8/P5PK/8/w Ra7e7 HJ.030 white_wins
2r3k1/2Pr1pp1/p1R2b1p/8/P4P2/6R1/4N1PP/6K1/b Rd7d1+ HJ.031 Rd1+; Kf2,Bh5
black_ahead
7k/R6p/3p1K2/4rP2/6P1/1p2r3/4p3/4R3/b Re5e8 HJ.032 allegedly equal with line
Kg8?; Rg7+,Kf8; Rxh7,Ke8; Ra1!,Re7; Ra8+,Kd7; Rxe7+,Rxe7; Ra7+,Kc6; Rxe7,b2;
Rxe2,b1=Q; g5;  Actually, black_wins with 1...Re8!, and if Rh1,Rf8+; Kg5,Kg8!
and now White must play Re1, as Rhxh7 loses to Rxf5+;
2r1k3/3p1pp1/p2Pp3/1p3n2/5P2/1PP2qPK/P2B4/R5Q1/b Rc8c5 HJ.033 Rc5; Rf1,Ne3
2k3rr/pp1b3q/2n5/3ppnp1/P1pP2B1/2P2Q1N/2PB2PP/R4R1K/b Nf5h4 HJ.034
5rk1/ppq1rpp1/7p/2bBp2Q/4P3/2P4R/PP4PP/5R1K/w Rf1f6 HJ.035
2r2rk1/1ppQ1pbp/p4qp1/n7/2B1R3/2P2N1P/PP3PP1/4R1K1/w Bc4xPf7+ HJ.036 Bxf7+
white_ahead
r1q2rk1/pp2pp1p/2np1npb/2pN4/2PP2b1/1P2P1P1/P2QNP1P/R1B1R1KB/b Nf6xNd5 HJ.037
Nxd5; cxd5,Nxd4 black_ahead
2r3k1/6p1/p2p1b2/5Qp1/1pqP4/2n1B1P1/P3P1BP/2R3K1/w Bg2d5+ HJ.038 Bd5+
2kr4/pbp1qp2/1pn3p1/1B1pPp1r/3P1P2/2N2Q2/PPP4P/2KR3R/w Nc3xPd5 HJ.039 Nxd5 = 2;
PV Nxd5,Rxd5; Qxd5,Na5; Ba6,Bxa6; Qa8+,Kd7; d5
8/1b1k1p2/p2pp3/1p2b1p1/P2NP1P1/2R1KP2/1PP1N2r/8/b Be5f4+ HJ.040 black_wins
K7/2P5/8/4B1k1/8/7p/8/1q6/b Qb1f5 HJ.041 Qf5; Kb7,Qxe5; c8=Q,Qd5+; Ka7,h2;
Qc1+,Kh5 = 4; Other sequences exist.
8/2b5/1pP1p3/1P3k2/1N5p/4KPp1/6P1/8/b Bc7e5 HJ.042 white_wins Be5!; f4,Bxf4+;
Kf3,e5; Nd5,e4+; Ke2,Bd6; c7,Bxc7; Nxc7,Ke5; Na8,Kd5; Nxb6+,Kc5; Nc4,Kxc4;
b6,h3; gxh,g2; Kf2,Kd3; b7,e3+; Kxg2,e2; b8=Q; e1=Q; Qg3+;   or 1...h3; gxh,Kg5;
Na6,Kh4; Nxc7, Kxh3; Ne6,g2; Nf4+; 1.-- Bf4+; Ke2,Kf6; Nd3,Bc7; f4,Ke7; Kf3,Kd6;
Nb4
2k1r3/pp1br3/5pp1/3pn3/2n5/1NP4P/PPB1R1P1/1K1R2N1/b Nc4xPb2 HJ.043
1rbr4/2q1n1kp/1p1R1pp1/3Pp3/pQ2N1P1/P7/1P3PBP/4R1K1/w Ne4xPf6 HJ.044 white_wins
r2q1rk1/pp3p1p/2n3p1/2QN4/4R3/3P2bP/PPP3B1/5RK1/b Bg3d6 HJ.045 white_ahead
r1b1qrk1/pp1n2b1/3p2pp/2pPp3/2P1BP2/P2N2P1/1P5P/R1BQR1K1/b Pb7b5 HJ.046
berlinersays 1...b5 just does not fly!!  b5; cxb,c4; Nb4!,Nc5; Nc6 and Black has
nothing to show for the P.
r1b5/ppqn2bk/3R2pp/2p2p2/2P1rN2/4BN2/PPQ2PPP/4R1K1/w Rd6xPg6 HJ.047 white_wins
6rk/4q3/pNQpn2b/P3p2p/1P2Pp2/2P2Prp/3R2PN/6RK/w Qc6d7 HJ.048 Qd7 white_ahead;
The point is Qd7,Qg5; Qxe6,hxg+; Rdxg2,Rxg2; Qxg8+!,Qxg8; Rxg2 with a fine
position.  If Qc4,h4 is strong.
8/pp5p/3bNkp1/5p2/2B2P2/P6P/1P4P1/1b4K1/b Pb7b5 HJ.049 b5; Bb3(d5),Bd3
black_wins
k2r3r/pq1nbp1p/4pp2/1p6/3PN3/5NP1/1PP1QP1P/1K1RR3/w Pd4d5 HJ.050 white_ahead
3rq2n/2p1r1pk/1p5p/p1p1R2P/P7/1PBP2Q1/2P3P1/5RK1/b Qe8d7 HJ.051 1...Rxe5; Qd7 is
even better than the given solution
5r2/r3qpk1/3p2p1/1QpPb3/Pp2P3/1P2PRPB/5RK1/8/w Bh3e6 HJ.052
r1b2rk1/1p2b1p1/p1q1pnB1/4p3/4N3/4B3/PPP4P/R2Q1RK1/b e5 HJ.053 e5,dxe; Ne4,Nxe4;
Rxf8+,Kxf8; Qh5,Bc5! equal ILLEGAL
3r2k1/2p1p2p/2p1p1pB/p1PrP3/8/P2bR2P/1P3RP1/6K1/w Pg2g4 HJ.054 Nxf7,Rxf7;
Bxe6,Nf6; Bxh6 white_ahead
r2q1rk1/3n1pp1/bp2p2p/2b1N3/p7/P4Q2/BPP2PPP/R1B1R1K1/w Ne5xPf7 HJ.055 b3,Qa3;
Bc1 Qxa2; Rd2 Qb1; O-O white_ahead; Unsound would be b6; b4 Qb3!!; Rd3 Qxc3;
Rxc3 c5!; bxa5 cxd black_ahead
1r3rk1/ppp2pbp/4p1p1/n3P3/q2P3P/2Q1BB2/PP3PP1/3RK2R/w Pb2b3 HJ.056 berliner has
doubts this solution is good
1qr3r1/p3k3/1p1p1bp1/4pP1p/4P1b1/1N1QB3/PPPR3P/1K4R1/w Rg1xBg4 HJ.057
8/2p3r1/1p2kb2/p3pRp1/P1NrP2p/3P3P/1P2KP2/2R5/w Nc4xPb6 HJ.058
r1q2r1k/p4Ppp/1p6/2pBn2n/4P1b1/2P2N2/P3QPPP/R1B2RK1/w Kg1h1 HJ.059
r3k1nr/1pp3pp/p2b1p2/N1p5/4P1b1/5P2/PPP3PP/RNBR2K1/b Bg4c8 HJ.060
rn1q1r1k/ppp1pPbp/6p1/4n3/2B3b1/5N2/PPP1QPPP/RNB2RK1/w Nf3xNe5 HJ.061
r4rk1/5n1p/3p1qn1/1Bp3pQ/P3RP2/6P1/1PN4P/2KR4/b Pg5xPf4 HJ.062

1k1r1r2/1p2bNp1/2p1p3/8/3P3p/4P3/PPP5/2KR1R2/w * HJ.M01
1k1N1r2/1p2b1p1/2p1p3/8/3P3p/4P3/PPP5/2KR1R2/b * HJ.M02
r1bqk2r/pppp1ppp/5n2/n5B1/2PNP3/2P5/P4PPP/R2QKB1R/b * HJ.M03
r1b1k2r/pppp1pp1/5q1p/n7/2PNP3/2P5/P4PPP/R2QKB1R/w * HJ.M04
rqb2rk1/1p3pp1/p2p3p/n1p4Q/2P1PP2/N1PB1R2/P5PP/R5K1/b * HJ.M05
r3q1rk/1p1b1pp1/p2p3p/n1pN3Q/2P1PP2/2PB1RR1/P5PP/6K1/b * HJ.M06
r1bqk2r/ppp1nppp/2np4/4P3/2B5/N1P2N2/P4PPP/R2Q1RK1/b * HJ.M07
r2q1rk1/ppp1nppp/2npP3/8/2B3b1/N1P2N2/P3QPPP/R4RK1/b * HJ.M08
r1b1kb1Q/pp1n2p1/2n1pqp1/3p4/3p1N2/2P5/PP1N1PPP/R1B1K2R/w * HJ.M09
r1b1kb1Q/pp4p1/2n1p1p1/2npq3/8/2Pp2N1/PP1N1PPP/R1B2K1R/w * HJ.M10

Jeno Ban:
The tactics of endgames,
Corvina press, 2nd edition 1963,
printed at Athenaeum printing house, Budapest 1972.

This is a collection of endgame studies, hence all moves are unique
and best (if there wasnt an error) with the sole (?) exception of
position 220. In all except 2 positions, (195 and 196) white is to
move.  Stalemate and underpromotion (N,B,R) themes are all included.
Diagrams 163-176 unfortunately were missing from my copy of the book
hence not included here; they all concern the theme "driving on".
Misprints:
Diagram 34 had the kings of the wrong color, apparently; now fixed.
Diagram 26 really does have two black queens.

8/8/7P/8/5R2/8/3r4/K1k5/w Ph6h7 (JenoBan_TofE) #17 white_wins
8/7p/3p4/8/6pP/8/4PK2/7k/w Kf2g3 (JenoBan_TofE) #18 draw
2k5/3p2p1/2p5/2K5/5P2/8/2P5/8/w Kc5d6 (JenoBan_TofE) #19 draw
8/3Pk1p1/8/1K3Pp1/8/8/8/8/w Kb5c6 (JenoBan_TofE) #20 draw
2K5/7p/8/8/6pP/8/2k3P1/8/w Kc8d7 (JenoBan_TofE) #21 draw
3k4/3p3p/3p4/PK6/4P3/8/8/8/w Kb5b6 (JenoBan_TofE) #22 draw
1k6/8/p5p1/6p1/6P1/5P1P/6PK/8/w Pf3f4 (JenoBan_TofE) #23 draw
8/1p6/1P1p4/1K1p2B1/P2P4/6pp/1P6/5k2/w Bg5d2 (JenoBan_TofE) #24 draw
1r6/1B6/8/8/5k1b/8/1B4P1/6K1/w Pg2g3+ (JenoBan_TofE) #25 draw
k3q3/q1p5/8/5Q2/8/8/3K4/5R2/w Rf1a1 (JenoBan_TofE) #26 draw
5B2/8/5P1K/q7/5k2/8/8/8/w Bf8d6+ (JenoBan_TofE) #27 draw
8/1q4PK/8/6P1/6k1/8/7P/8/w Kh7h8 (JenoBan_TofE) #28 draw
7b/8/kq6/8/8/1N2R3/K2P4/8/w Nb3d4 (JenoBan_TofE) #29 draw
4k3/8/4K3/b7/8/4p3/6pP/2R5/w Ke6f5 (JenoBan_TofE) #30 draw
R7/8/3bN3/7p/7K/p1k5/6p1/8/w Ne6f4 (JenoBan_TofE) #31 draw
8/8/2p5/pkp3R1/7B/P7/2p3K1/8/w Pa3a4+ (JenoBan_TofE) #32 draw
8/8/8/6p1/6P1/6pp/7p/1R3K1k/w Rb1e1 (JenoBan_TofE) #33 draw
8/1R6/1p6/4K3/6k1/7r/2pP4/8/w Rb7g7+ (JenoBan_TofE) #34 draw
1k6/R7/K7/8/8/8/2p5/8/w Ra7b7+ (JenoBan_TofE) #35 draw
2R5/2P5/K1k5/1r6/8/8/2p5/8/w Rc8g8 (JenoBan_TofE) #36 draw
8/1p3k2/3K4/8/3Pp2R/8/6p1/6b1/w Rh4f4+ (JenoBan_TofE) #37 draw
4k3/6b1/6N1/8/2R5/8/K2p4/8/w Rc4e4+ (JenoBan_TofE) #38 draw
8/8/Pk2N3/4n3/1B6/1P1p4/K4p2/8/w Bb4c5+ (JenoBan_TofE) #39 draw
8/5k1K/8/4R3/4p3/pb6/8/8/w Re5xPe4 (JenoBan_TofE) #40 draw
8/2p5/2P1p3/4P1p1/7k/p6P/6PB/6K1/w Pg2g4 (JenoBan_TofE) #41 draw
3N4/8/3k1P2/8/8/2p2p1p/7P/7K/w Pf6f7 (JenoBan_TofE) #42 draw
1r6/4kP2/6PK/8/8/8/8/8/w Kh6h7 (JenoBan_TofE) #43 draw
8/8/4PkPK/8/3N1r2/8/8/8/w Nd4f5 (JenoBan_TofE) #44 draw
4r3/Kp6/5P2/1k2P3/8/8/8/8/w Pf6f7 (JenoBan_TofE) #45 draw
3k4/1K6/1P6/5p2/B1p5/8/3b4/8/w Kb7a6 (JenoBan_TofE) #46 draw
8/6B1/1r1P4/8/4K3/8/7b/2k5/w Bg7e5 (JenoBan_TofE) #47 draw
1N5k/8/8/4K2N/8/p7/8/8/w Nb8d7 (JenoBan_TofE) #50 draw
4k3/3pp3/6P1/1N6/6B1/8/p4K2/8/w Bg4xPd7+ (JenoBan_TofE) #51 draw
5B1k/7p/6P1/4NnP1/8/8/K4p2/8/w Pg6g7+ (JenoBan_TofE) #52 draw
4K3/2k1Bp1N/6p1/5PP1/8/7p/b7/8/w Be7f6 (JenoBan_TofE) #53 draw
8/3k4/2p5/8/p1p5/PpP5/1P2B3/r1NK4/w Be2g4+ (JenoBan_TofE) #54 draw
8/8/3b2P1/6P1/1k6/8/2B1r3/1K6/w Pg6g7 (JenoBan_TofE) #55 draw
2K3k1/1p6/R3p1p1/1rB1P1P1/8/8/1Pb5/8/w Ra6c6 (JenoBan_TofE) #56 draw
3k4/6b1/6P1/8/1p6/3b4/1P3B2/4K3/w Bf2b6+ (JenoBan_TofE) #58 draw
2k1b3/3n4/8/8/3N4/4K3/8/4n3/w Ke3e2 (JenoBan_TofE) #59 draw
6b1/1B6/3P4/5n2/K1n5/8/4k3/8/w Pd6d7 (JenoBan_TofE) #60 draw
2n1b3/8/2r5/3k3n/8/3B4/1R5K/8/w Bd3b5 (JenoBan_TofE) #61 draw
3n4/6k1/6P1/1KP5/8/8/8/3b4/w Pc5c6 (JenoBan_TofE) #62 draw
6k1/8/8/1K4p1/3p2P1/2pp4/8/1R6/w Kb5c6 (JenoBan_TofE) #63 draw
3N4/8/8/3b4/6K1/5p2/8/7k/w Kg4g3 (JenoBan_TofE) #64 draw
8/K7/4N3/3k4/5R2/6n1/4p3/8/w Rf4f6 (JenoBan_TofE) #65 draw
3n4/8/2P5/8/5p2/p2N3k/7p/5K2/w Nd3f2+ (JenoBan_TofE) #66 draw
q7/p7/4b3/B6p/7k/7P/5P1K/5B2/w Pf2f4 (JenoBan_TofE) #67 draw
1b5q/5Pp1/8/1BN4k/8/7P/6K1/8/w Nc5d7 (JenoBan_TofE) #68 draw
5R2/4K3/5P2/4k1pp/1Pp5/2P1P2P/1P3q1P/8/w Rf8e8 (JenoBan_TofE) #69 draw
6k1/8/4K3/1R5p/8/2N5/n2q3B/8/w Nc3e4 (JenoBan_TofE) #70 draw
8/r3k2B/7P/n1K5/7P/8/8/8/w Bh7g8 (JenoBan_TofE) #71 draw
8/k7/2K5/8/8/8/6pp/1R6/w Rb1a1+ (JenoBan_TofE) #72 draw
1b2K3/1P6/6n1/1P2k3/8/8/8/8/w Ke8d8 (JenoBan_TofE) #73 draw
8/8/p5r1/1p6/1P1R4/8/5K1p/7k/w Rd4d1+ (JenoBan_TofE) #74 white_wins
6k1/2Q5/6q1/8/7K/5B2/8/8/w Bf3d5+ (JenoBan_TofE) #75 white_wins
1q1r4/4k3/8/2R3K1/8/8/8/2Q5/w Rc5c7+ (JenoBan_TofE) #76 white_wins
8/8/2k4b/P7/8/8/2N2PKp/8/w Nc2d4+ (JenoBan_TofE) #77 white_wins
5rk1/5p2/4P2P/8/4pR2/8/4K3/8/w Rf4f6 (JenoBan_TofE) #78 white_wins
r2k1B2/7R/p7/8/8/8/8/4K3/w Bf8c5 (JenoBan_TofE) #79 white_wins
8/2b5/8/4N3/8/4K3/8/3Bk1B1/w Bd1g4 (JenoBan_TofE) #80 white_wins
6k1/8/5pPp/5P2/7K/8/8/8/w Kh4g4 (JenoBan_TofE) #81 white_wins
6k1/8/3K2p1/8/6P1/8/8/8/w Pg4g5 (JenoBan_TofE) #82 draw
2Q5/8/8/4p3/8/K7/4kp2/8/w Qc8c4+ (JenoBan_TofE) #83 draw
8/8/1p6/pP3K1p/P7/6kP/8/8/w Kf5e4 (JenoBan_TofE) #84 draw
4N3/8/6p1/8/8/7p/5K1k/8/w Ne8f6 (JenoBan_TofE) #85 white_wins
8/8/4pN2/6p1/5p2/7p/8/5K1k/w Nf6g4 (JenoBan_TofE) #86 white_wins
1knK4/n7/3N4/2N5/8/8/8/8/w Nc5d7+ (JenoBan_TofE) #87 white_wins
4k3/8/8/6pP/6B1/8/7K/8/w Bg4e6 (JenoBan_TofE) #88 white_wins
8/Bpk5/8/P2K4/8/8/8/8/w Kd5d4 (JenoBan_TofE) #89 white_wins
8/1p6/8/5N2/p1K4B/p7/2k5/8/w Nf5d4+ (JenoBan_TofE) #90 white_wins
n7/7k/4p3/B7/6N1/8/8/6K1/w Ng4e5 (JenoBan_TofE) #91 white_wins
7K/k7/8/P7/6pP/8/8/8/w Pa5a6 (JenoBan_TofE) #92 draw
8/1p6/7R/1k6/8/8/pP4PP/2K5/w Rh6h5+ (JenoBan_TofE) #93 white_wins
6q1/3p4/4pp2/2P2k2/7K/3PP3/2R5/1B6/w Rc2f2+ (JenoBan_TofE) #94 white_wins
5rk1/3qPb2/8/7P/8/3B4/8/1K1R4/w Bd3h7+ (JenoBan_TofE) #95 white_wins
1k1K4/1p6/pP2B3/P4p2/6p1/8/8/8/w Kd8d7 (JenoBan_TofE) #96 white_wins
8/8/8/8/8/1Q3pp1/p5p1/k5K1/w Qb3b6 (JenoBan_TofE) #97 white_wins
8/8/1KP5/3r4/8/8/8/k7/w Pc6c7 (JenoBan_TofE) #98 white_wins
8/8/2P5/1Pr5/8/8/N7/k2K4/w Na2c1 (JenoBan_TofE) #99 white_wins
8/8/3PR3/8/1k3p2/5P2/3p2K1/8/w Re6e4+ (JenoBan_TofE) #100 white_wins
8/8/1P6/8/2N1k3/2K3p1/6r1/8/w Pb6b7 (JenoBan_TofE) #101 white_wins
8/7p/6pP/1B4P1/pp6/1k1K4/8/8/w Bb5e8 (JenoBan_TofE) #102 white_wins
k7/1p6/nP1P2K1/8/r5R1/8/4B3/r7/w Pd6d7 (JenoBan_TofE) #103 white_wins
8/p3B2p/1P5P/3P4/5r2/3k4/8/6K1/w Pb6b7 (JenoBan_TofE) #104 white_wins
7k/5p1p/8/7N/P1P5/8/K1R5/6q1/w Rc2e2 (JenoBan_TofE) #105 white_wins
8/6Pk/8/7P/B6K/8/8/1b6/w Ph5h6 (JenoBan_TofE) #106 white_wins
8/8/2Q5/2K5/4N3/6p1/k5q1/8/w Ne4c3+ (JenoBan_TofE) #107 white_wins
8/5q2/1Q6/4k3/1N6/8/3K4/8/w Nb4c6+ (JenoBan_TofE) #108 white_wins
1b6/8/1N4Pk/8/8/B6K/8/8/w Nb6d7 (JenoBan_TofE) #109 white_wins
8/3k4/1K6/8/4BR2/4p3/4p3/8/w Be4f5+ (JenoBan_TofE) #110 white_wins
6R1/8/8/2B5/8/5K2/7p/7k/w Kf3g4 (JenoBan_TofE) #111 white_wins
8/8/5N2/B1pK4/1p6/k7/8/8/w Nf6e4 (JenoBan_TofE) #112 white_wins
8/8/3q4/8/1P2K3/8/Q7/7k/w Qa2d5 (JenoBan_TofE) #115 white_wins
8/6p1/4p3/2k2q2/1R3N2/B7/K7/8/w Nf4g6 (JenoBan_TofE) #116 white_wins
k7/P7/8/2PK4/3p4/3P1B2/7p/6b1/w Pc5c6 (JenoBan_TofE) #117 white_wins
7k/7b/8/p1P1Kp2/5B2/p7/8/8/w Pc5c6 (JenoBan_TofE) #118 white_wins
7R/q7/4k3/1p5p/1p6/4P3/2P2PK1/6B1/w Rh8h6+ (JenoBan_TofE) #119 white_wins
8/5K2/3pp3/8/5k1p/3p3Q/q3P3/8/w Qh3f3+ (JenoBan_TofE) #120 white_wins
5R2/8/2p1qP2/3p4/k7/8/3Pp3/2K1B3/w Pf6f7 (JenoBan_TofE) #121 white_wins
8/B1p2p1P/8/4p3/8/k7/p2K4/8/w Ba7d4 (JenoBan_TofE) #122 white_wins
3B4/1p6/4p1p1/2P1k1P1/2P5/6N1/2KP1P2/4q3/w Pc5c6 (JenoBan_TofE) #123 white_wins
q4k2/p2pp2K/8/2R1P3/4N3/3P4/P7/8/w Pe5e6 (JenoBan_TofE) #124 white_wins
1Q6/8/p2N1k2/q2p4/P3p1K1/8/8/6n1/w Qb8f8+ (JenoBan_TofE) #125 white_wins
6q1/3p4/p4p2/P1kP2p1/4P1R1/2Np4/1P6/1K6/w Pe4e5 (JenoBan_TofE) #126 white_wins
R7/Pp2b1p1/8/8/4p3/8/k1K3p1/8/w Ra8h8 (JenoBan_TofE) #127 white_wins
R7/3p3p/8/3P2P1/3k4/1p5p/1P1NKP1P/7q/w Pg5g6 (JenoBan_TofE) #128 white_wins
8/8/3P4/7B/8/1k2r3/1P6/3K4/w Bh5g6 (JenoBan_TofE) #129 white_wins
8/8/P7/4k3/7B/8/1K6/6r1/w Pa6a7 (JenoBan_TofE) #130 white_wins
8/3p4/8/2P5/8/2pK4/p6R/1k6/w Pc5c6 (JenoBan_TofE) #131 white_wins
8/6pk/1pp1p3/1R4P1/1K3N2/8/2Pp4/8/w Pg5g6+ (JenoBan_TofE) #132 white_wins
7K/6p1/8/7p/8/8/R7/6k1/w Kh8h7 (JenoBan_TofE) #133 white_wins
4k3/3p1N2/8/P1P4b/8/8/8/6K1/w Pc5c6 (JenoBan_TofE) #134 white_wins
6k1/8/4KP2/4N3/8/8/1b6/8/w Ke6e7 (JenoBan_TofE) #135 white_wins
8/3p3p/3B3k/P1Pp1p1P/8/8/5P2/1b5K/w Pc5c6 (JenoBan_TofE) #136 white_wins
1r6/4P1P1/8/7k/8/7N/8/4K3/w Nh3f4+ (JenoBan_TofE) #137 white_wins
8/8/P7/3p3r/3k3B/3P4/5K2/8/w Pa6a7 (JenoBan_TofE) #138 white_wins
1kr5/4P1Pp/8/8/8/B7/7K/8/w Pe7e8=Q (JenoBan_TofE) #139 white_wins
4k3/B1Kp3p/P1p5/7P/2p5/8/2P4r/8/w Ba7f2 (JenoBan_TofE) #140 white_wins
4B3/8/k7/P7/8/8/3r3p/7K/w Be8f7 (JenoBan_TofE) #141 draw
8/8/3P4/2r5/4B2k/4r1p1/8/5R1K/w Pd6d7 (JenoBan_TofE) #142 white_wins
5N1k/8/2nPP3/P7/5p1r/3b4/5P2/3K4/w Pd6d7 (JenoBan_TofE) #143 white_wins
K7/2b5/3p1p2/4k3/4P3/4N3/8/2B5/w Ka8b7 (JenoBan_TofE) #144 white_wins
4B3/8/6N1/5p2/1r4p1/6pk/7b/4K2Q/w Be8c6 (JenoBan_TofE) #145 white_wins
4n2k/8/5nP1/7P/8/4K3/3R4/8/w Ph5h6 (JenoBan_TofE) #146 white_wins
6N1/n7/3kn3/K7/6N1/8/8/4B3/w Ka5b6 (JenoBan_TofE) #147 white_wins
4kr2/R4p2/6p1/8/1K6/3B4/8/8/w Bd3f5 (JenoBan_TofE) #148 white_wins
8/6k1/1B6/4n3/8/7p/8/3K4/w Bb6g1 (JenoBan_TofE) #149 draw
8/2pp2pp/8/2PP1P2/1p5k/8/PP4p1/6K1/w Pf5f6 (JenoBan_TofE) #150 white_wins
8/pp3pb1/P1p5/2K1k2B/5p1p/3P4/3P2P1/8/w Pd3d4+ (JenoBan_TofE) #151 white_wins
7B/8/5R2/8/8/7p/4K2p/7k/w Rf6f8 (JenoBan_TofE) #152 white_wins
3K4/8/8/p7/3N4/8/pn1B4/k7/w Nd4c2+ (JenoBan_TofE) #153 white_wins
1k6/1p1p4/PK2p3/5p1p/6pP/8/8/5B2/w Pa6a7+ (JenoBan_TofE) #154 white_wins
8/8/2r3pP/6P1/8/K7/7k/3B4/w Bd1h5 (JenoBan_TofE) #155 white_wins
3q2r1/6P1/p7/8/8/k3N1Qp/8/2K5/w Ne3c2+ (JenoBan_TofE) #156 white_wins
8/5q2/1Q5K/8/4k3/8/3B4/8/w Qb6e3+ (JenoBan_TofE) #157 white_wins
7k/8/2P3n1/8/8/3pN1K1/8/8/w Ne3f5 (JenoBan_TofE) #158 white_wins
6n1/8/k3N3/8/8/K7/2b5/4R3/w Ne6d4 (JenoBan_TofE) #159 white_wins
1n6/7k/8/b7/8/4R3/6P1/3K4/w Re3b3 (JenoBan_TofE) #160 white_wins
K7/2rp4/8/2p3P1/8/8/5R2/7k/w Ka8b8 (JenoBan_TofE) #161 white_wins
8/3p4/6P1/8/b4R2/8/K2p2Pk/8/w Rf4h4+ (JenoBan_TofE) #162 white_wins (i think
this move is right: pages 145-160 missing in my copy of book)
8/2p4k/P7/4K3/4P3/p7/6r1/2R5/w Pa6a7 (JenoBan_TofE) #177 white_wins
8/R1p5/5pP1/8/8/7K/1k6/2r5/w Ra7b7+ (JenoBan_TofE) #178 white_wins
2K5/1P6/2k5/7p/8/6b1/8/2B5/w Bc1e3 (JenoBan_TofE) #179 white_wins
3B4/6b1/6P1/2p5/P1k5/8/8/5K2/w Bd8a5 (JenoBan_TofE) #180 white_wins
K2n4/8/P7/8/2k5/8/2N5/8/w Ka8a7 (JenoBan_TofE) #181 white_wins
8/8/5p2/5p2/5P2/3p3B/5k1P/3K4/w Bh3g2 (JenoBan_TofE) #182 white_wins
8/3p3B/1n2P2r/8/8/7k/R4P2/7K/w Pe6e7 (JenoBan_TofE) #183 white_wins
8/8/B3P3/3k4/5K2/2P4b/8/8/w Ba6c8 (JenoBan_TofE) #184 white_wins
8/8/P5b1/8/k7/p1P2p1B/3K4/8/w Kd2e3 (JenoBan_TofE) #185 white_wins
2k2K2/8/3n2P1/8/4b3/8/2P1B3/8/w Pg6g7 (JenoBan_TofE) #186 white_wins
8/p6k/3P4/4p3/3p4/6r1/2P5/R6K/w Ra1a3 (JenoBan_TofE) #187 white_wins
8/kp2q3/pR2r2r/1Pp5/7R/1P2Q2P/4K3/8/w Rb6xRe6 (JenoBan_TofE) #188 white_wins
7k/4p3/3pPp2/2pP4/1pP5/1P6/P7/K7/w Pa2a4 (JenoBan_TofE) #191 white_wins
8/7k/4K2p/6p1/6P1/7P/8/8/w Ke6f7 (JenoBan_TofE) #192 white_wins
8/pp4p1/4k1P1/3p4/3P4/2P5/4K2P/8/w Pc3c4 (JenoBan_TofE) #193 white_wins
8/6p1/8/5p1P/5P2/6P1/8/5K1k/w Kf1e1 (JenoBan_TofE) #194 white_wins
8/8/8/1p5r/p1p1k1pN/P2pBpP1/1P1K1P2/8/b Pb5b4 (JenoBan_TofE) #195 black_wins
8/pR4pk/1b6/2p5/N1p5/8/PP1r2PP/6K1/b Rd2xPb2 (JenoBan_TofE) #196 black_wins
8/1p6/7p/5p1P/5P2/1p6/6RK/k7/w Rg2g5 (JenoBan_TofE) #197 white_wins
8/r7/Pp4Pp/7k/p7/7K/6P1/R7/w Pg6g7 (JenoBan_TofE) #198 white_wins
8/4B3/2K1P3/8/8/8/k1p5/2b5/w Be7b4 (JenoBan_TofE) #199 draw
2K5/2P2R2/k7/8/8/8/2r2p2/8/w Kc8b8 (JenoBan_TofE) #200 white_wins
1B6/8/7P/4p3/3b3k/8/8/2K5/w Bb8a7 (JenoBan_TofE) #201 white_wins
6n1/3p4/8/1P2k1n1/4P3/B5K1/3P4/8/w Pd2d4+ (JenoBan_TofE) #202 white_wins
8/4pp2/p1P2p2/8/P1P2R2/K1kr1P2/P7/8/w Pc6c7 (JenoBan_TofE) #203 white_wins
8/KPb5/8/P5p1/5p2/3k4/7P/2B5/w Bc1a3 (JenoBan_TofE) #204 white_wins
1N6/8/K7/3k4/3p3B/p7/2PP4/8/w Nb8c6 (JenoBan_TofE) #205 white_wins
3N4/8/2P4k/8/8/3B4/n6K/2b5/w Kh2g3 (JenoBan_TofE) #206 white_wins
8/6q1/2k2r2/8/1K6/8/4R3/5Q2/w Re2e6+ (JenoBan_TofE) #207 white_wins
K7/1P6/k1q5/8/8/1Q6/8/8/w Qb3b4 (JenoBan_TofE) #208 white_wins
6K1/8/pp5p/8/7k/3PP3/8/8/w Pd3d4 (JenoBan_TofE) #209 white_wins
4k3/8/3RK2P/8/p7/8/6r1/8/w Ke6f6 (JenoBan_TofE) #210 white_wins
2k5/5N2/8/8/8/1b2K3/6B1/3N4/w Nf7d6+ (JenoBan_TofE) #211 white_wins
8/8/7P/8/5N2/1k6/1p3b2/1K6/w Nf4e6 (JenoBan_TofE) #212 white_wins
8/1p6/1p6/6N1/6p1/4k3/K7/8/w Ng5h7 (JenoBan_TofE) #213 draw
4q3/5N2/B7/8/3k3B/8/1K6/8/w Bh4f2+ (JenoBan_TofE) #214 white_wins
6q1/6p1/2k4p/R6B/p7/8/2P3P1/2K5/w Ra5a8 (JenoBan_TofE) #215 white_wins
8/4B2p/8/3p3P/8/3Pk1K1/p7/6N1/w Be7f6 (JenoBan_TofE) #216 white_wins
8/6p1/k1P2p1p/7K/8/8/8/8/w Kh5g6 (JenoBan_TofE) #217 draw
5K2/k7/4P1p1/8/8/8/4b3/8/w Kf8e7 (JenoBan_TofE) #218 draw
2K2N2/2B5/p1p4p/2k5/2P5/7p/8/8/w Kc8b7 (JenoBan_TofE) #219 white_wins
8/4K3/8/3pk3/3R4/8/8/8/w Rd4d2,Rd4d3 (JenoBan_TofE) #220 white_wins
1k6/1P6/2P5/P7/5ppp/8/6K1/8/w Kg2g1 (JenoBan_TofE) #221 white_wins
8/8/8/8/1bk5/2r5/1KP2B2/R7/w Ra1a4 (JenoBan_TofE) #222 white_wins
3b3k/4n3/8/8/7B/8/8/5KR1/w Bh4f6+ (JenoBan_TofE) #223 white_wins
8/5k2/8/2BR4/b7/8/1P2p1Kp/1n6/w Rd5e5 (JenoBan_TofE) #224 white_wins
2R5/k2Bn3/1pP5/8/b7/2K5/8/8/w Rc8c7+ (JenoBan_TofE) #225 white_wins
1R1K4/8/3n4/1b6/1P6/8/8/7k/w Rb8b6 (JenoBan_TofE) #226 white_wins
6k1/1B5p/1p6/3n4/3r4/7P/5KP1/2R5/w Rc1c4 (JenoBan_TofE) #227 white_wins
1r3k2/8/3b2p1/3P4/1p6/6P1/K4B2/7R/w Bf2c5 (JenoBan_TofE) #228 white_wins
8/8/5P1k/8/2K5/pr2r3/4R3/2R5/w Pf6f7 (JenoBan_TofE) #229 white_wins
3r2r1/7k/8/7K/8/8/8/3RR3/w Re1e7+ (JenoBan_TofE) #230 white_wins
8/8/B7/3K4/8/6p1/7k/5R2/w Rf1f3 (JenoBan_TofE) #231 white_wins
6k1/4K3/6PP/8/7B/8/8/7r/w Ph6h7+ (JenoBan_TofE) #232 white_wins
5k2/4p2p/6P1/3K4/8/4B3/8/8/w Be3h6+ (JenoBan_TofE) #233 white_wins
1NBk4/p2p4/8/3K4/8/8/8/8/w Bc8b7 (JenoBan_TofE) #234 white_wins
8/4q3/2p5/2n2Q2/p5N1/7k/8/1K6/w Ng4e3+ (JenoBan_TofE) #235 white_wins
8/3b2Bq/8/7p/6k1/8/6K1/Q7/w Qa1d4+ (JenoBan_TofE) #236 white_wins
R7/6N1/8/4p3/4k3/6n1/7b/3K4/w Ra8a2 (JenoBan_TofE) #237 white_wins
8/3b4/k2p3P/1p1K3P/1P4r1/8/3R4/8/w Ph6h7 (JenoBan_TofE) #238 white_wins
5q2/n2P1k2/2b5/8/8/3N4/4BK2/6Q1/w Qg1g5 (JenoBan_TofE) #239 white_wins


Test Positions from the book "Master chess, a course in 21 lessons",
Pergamon Press 1985.
By D. Kopec, G. Chandler, C. Morrison, N. Davies, I.D. Mullen.

Pages 13,14,29-34, 105-106, 111-112, 115-117, 119-123
were scanned in by Kevin Lang Apr 12 1993.
The rest were typed in by Warren Smith.


LESSONS 1-4: TACTICS AND COMBINATIONS
begin examples from (Kopec-Lessons-1-4)
3r1rk1/pppb2p1/3ppbP1/8/q7/2P4B/PP3PP1/K1NR1Q1R/w Rd1d4 (Kopec-Lessons-1-4) (1
page 3)
r1b2rk1/3p1ppp/1q3n2/1p6/pN2N3/4PP2/PPR4P/KQ4R1/w Rc2c6 (Kopec-Lessons-1-4) (3
page 3)
5rk1/q2p1ppp/8/1p3N2/1np5/P7/1PQ2PP1/KR6/w Nf5e7+ (Kopec-Lessons-1-4) (5 page 4)
r1b1k2r/p1ppbN1p/2n5/6pQ/2p5/8/PP3PPP/6K1/w Nf7d6+ (Kopec-Lessons-1-4) (6 page
6)
r1bq1rk1/pp1n1ppp/2n1p3/3pP3/3P4/2PB1N2/P4PPP/R1BQ1RK1/w Bd3xPh7+
(Kopec-Lessons-1-4) (7 page 6)
r1bqkb1r/1ppp1ppp/p1n5/4N3/8/2n5/PPPP1PPP/R1BQR1K1/w Ne5xNc6+
(Kopec-Lessons-1-4) (9 page 7)
5rk1/1p3ppp/p1b5/3pN2q/5r2/QP6/PB3PPP/2R1R1K1/w Qa3xRf8+ (Kopec-Lessons-1-4)
r2qk2r/ppp2ppp/2np1n2/4p3/1bP3b1/1QN1P1P1/PP1PNPBP/R1B1K2R/b Ra8b8
(Kopec-Lessons-1-4) (12 page 8)
3r1rk1/bpq2ppp/p1b1p3/2P5/1P2B3/P4Q2/1B3PPP/2R2RK1/w Be4xPh7+
(Kopec-Lessons-1-4) (13 page 9)
r1r3k1/qb1N1ppp/p3p3/1pbn2B1/8/4P3/PP2QPPP/1B1R1RK1/w Rd1xNd5
(Kopec-Lessons-1-4) (14 page 9)
r2qk3/p1ppb2p/b1p1r1pN/2n5/8/2N1B2Q/PPP2PPP/R2R2K1/w Nh6f7 (Kopec-Lessons-1-4)
(14 page 10)
r4rk1/p1pq1ppp/2pb4/2n1pN2/4P3/5Q1P/PPP2PP1/R1BR2K1/w Bc1h6 (Kopec-Lessons-1-4)
(17 page 11)
7k/1p2q2p/3N4/2Q1b3/5r2/1P2p2P/P5P1/3R2K1/w Nd6f5 (Kopec-Lessons-1-4) (34 page
16)
5rk1/6pp/bpp1N3/p2p1p2/3P4/2P5/PP3PPP/5RK1/w Ne6xRf8 (Kopec-Lessons-1-4) (35
page 17)
2r5/p4pkp/q5p1/p7/8/2b1N2P/P4PP1/2RQ2K1/w Rc1xBc3 (Kopec-Lessons-1-4) (36 page
17)
8/pp3pk1/5np1/Bp4p1/6P1/1P3P2/P3K3/8/w Ba5c3 (Kopec-Lessons-1-4) #37
8/3r1k2/p3q1p1/4P1P1/8/P1KQ4/8/5B2/w Qd3xRd7+ (Kopec-Lessons-1-4)  #38
8/8/8/7r/2R5/3k4/8/R2K4/w Rc4h4 (Kopec-Lessons-1-4) (39 page 18)
6k1/2r3pp/1p1p2P1/p3p3/8/2P1PR2/1P3PK1/8/w Rf3f8+ (Kopec-Lessons-1-4) (40 page
19)
2r3k1/2P2pp1/4r2p/8/7B/6P1/5PKP/3R4/w Rd1d8+ (Kopec-Lessons-1-4) (41 page 19)
3r2k1/6P1/4q3/8/8/6P1/2Q3KP/5R2/w Rf1f8+ (Kopec-Lessons-1-4) (42 page 19; RxRf8,
2. Qh7+ KxQ, 3 gxf8=N+ and wins)
r1b2rk1/pppn1pp1/7p/4N3/8/3B3P/PPP2PP1/3R1RK1/w Ne5xNd7 (Kopec-Lessons-1-4) (43
page 20)
2r5/1pkr4/p1p2n1p/8/1PN3PP/P1KR4/8/3R4/w Rd3xRd7+ (Kopec-Lessons-1-4) (44 page
20)
3r4/p1k5/8/2p5/2P4P/p1P3P1/P4P2/5K1R/b Rd8d1+ (Kopec-Lessons-1-4) (45 page 20,
2. Kg2 Rxh1 3. Kxh1 Kb6 forcing stalemate)
6K1/8/8/8/8/3b4/3P2kp/R7/w Kg8h8 (Kopec-Lessons-1-4) (forces draw. 46 page 21.))
8/p1k5/P4b2/2PP4/2K3B1/8/8/8/b Bf6e7 (Kopec-Lessons-1-4) (draws. 48 page 21)
k2rb2r/pp2n2p/2N1p3/1N1q2p1/5Q2/2PP3P/1P3PP1/R4RK1/b Qd5xPg2+
(Kopec-Lessons-1-4) (at least draws and saves the day 49 page 22)
r1b2r1k/pp2N1bp/3p2p1/4p3/2qBP3/8/PPPQ2P1/2KR3R/b Bc8g4 (Kopec-Lessons-1-4) (50
page 22)
r5k1/pb2rpp1/1p6/7q/3R4/2PB2Q1/P1P3PP/5R1K/w Rd4h4 (Kopec-Lessons-1-4) (52 page
23)


LESSONS 5-8: HOW TO ANALYSE A POSITION
begin examples from (Kopec-Lessons-5-8)
r3rnk1/pp1qbpp1/5n1p/1P1p1b2/P2P4/1QN1PN2/1B2B1PP/R4RK1/b Be7d6!
(Kopec-Lessons-5-8) (1 page 37)
r1br2k1/2qpbpp1/2p4p/1p2P3/2nNBB2/PQ6/2P2PPP/R2R2K1/b Nc4xPe5
(Kopec-Lessons-5-8) (11 page 45)


LESSONS 9-12 HOW TO FORMULATE A PLAN
begin examples from (Kopec-Lessons-9-12)
rn1q1rk1/pp3pb1/3p4/2pPp1p1/2P1Pnb1/2N2NB1/PPQ2PP1/R3KB1R/b Nb8a6
(Kopec-Lessons-9-12) (14 page 60; 1...BxNf3? looks good but is wrong. It secures
an N outpost, BUT it is in a useless place.)
r1bq1rk1/1p1nbppp/p2p1n2/4p1B1/B1P1P3/2N2N2/PP1Q1PPP/R4RK1/b Nd7b6
(Kopec-Lessons-9-12) (15 page 60)
r1b1k2r/pp2bppp/2n1p1n1/q2pP3/3p2Q1/3B1N2/PPPN1PPP/R1B1R1K1/w Ph2h4
(Kopec-Lessons-9-12) (18 page 62)
1r6/1q2n1bk/p2p1npp/4p3/1r2P3/2NQB1NP/PPRR2P1/1K6/b Pd6d5 (Kopec-Lessons-9-12)
(20 page 63)
2rr2k1/1p3ppp/8/pB1p4/P2Pb1P1/8/1P3PP1/R3R1K1/w Pf2f3 (Kopec-Lessons-9-12) (21
page 64)
3rr1k1/pp3pb1/2p3p1/4p2p/P3P3/2P2P2/1PK3PP/R1B4R/w Bc1e3 (Kopec-Lessons-9-12)
(22 page 65)
rn2qrk1/p3bppp/bpp1pn2/3pN3/Q1PP4/2N3P1/PP2PPBP/R1B1R1K1/b Pb6b5
(Kopec-Lessons-9-12) (23 page 66)
1rbqk2r/pp2npbp/2npp1p1/2p5/4P3/2NPB1P1/PPP1NPBP/R2Q1RK1/w Pd3d4
(Kopec-Lessons-9-12) (25 page 67)
3r1rk1/2pqn1pp/1p1bbp2/p1p1p3/4P3/2PPBPN1/PP1R1QPP/2N2RK1/b Pf6f5
(Kopec-Lessons-9-12)


LESSONS 17-20 ENDINGS
begin examples from (Kopec-Lessons-17-20)
8/8/p7/1p6/1PkBbK2/2P2p2/8/8/b Pa6a5 (Kopec-Lessons-17-20) (32 page 93)
6k1/6p1/6Pp/ppp5/3pn2P/1P3K2/1PP2P2/3N4/b Ne4c3 (Kopec-Lessons-17-20) (36 page
94)
2n3k1/pp3ppp/3p4/3P4/3N4/8/PP3PPP/2K5/w Nd4b3 (Kopec-Lessons-17-20) (37 page 94)
8/7p/8/8/6k1/8/8/KR6/w Rb1g1+ (Kopec-Lessons-17-20) (39 page 95)
8/7p/8/8/6k1/8/8/KR6/b Ph7h5 (Kopec-Lessons-17-20) (39 page 95, other side
moves)
8/8/5k2/3K4/3P4/8/7r/6R1/w Rg1e1 (Kopec-Lessons-17-20) (47 page 98)
R7/6k1/P7/8/3K4/8/8/r7/w Pa6a7? (Kopec-Lessons-17-20) (is a mistake which draws.
Kc5 won. 48 page 99)
2r3k1/pppR1pp1/4p3/4P1P1/5P2/1P4K1/P1P5/8/w Pg5g6 (Kopec-Lessons-17-20) (50 page
99)
7R/8/8/PK6/1P6/6k1/7p/r7/w Rh8xPh2 (Kopec-Lessons-17-20) (51 page 99)
3R4/2r3kp/6p1/P4p2/5P2/6P1/6KP/8/w Rd8d2 (Kopec-Lessons-17-20) (52 page 100)


EXERCISES PAGES FOLLOW

begin examples from (Kopec-Exercises-p.13)
r6k/1R1N1R2/6n1/6r1/8/8/8/4K3/w Rf7h7+ (Kopec-Exercises-p.13) #20
q1b3k1/r5n1/4P3/5N2/5Q2/8/7R/6K1/w Nf5e7+ (Kopec-Exercises-p.13) #21
rnb3kr/ppp2ppp/1b6/3q4/3PN3/Q4N2/PPP2KPP/R1B1R3/w Ne4f6+ (Kopec-Exercises-p.13)
#22
2r2rk1/2p2ppp/8/6R1/2q5/5P2/1PPQ4/1K1R4/w Rg5xPg7+ (Kopec-Exercises-p.13) #23
3q2k1/4pp1r/7Q/8/4N3/3B4/8/7K/w Ne4f6+ (Kopec-Exercises-p.13) #24
4n2k/1Q4p1/3q2P1/8/8/5R2/b5R1/6K1/w Rf3f8+ (Kopec-Exercises-p.13) #25
r5k1/3R2pp/3P1b2/4N1q1/8/8/5Q2/4K3/w Rd7d8+ (Kopec-Exercises-p.13) #26
7k/qbp2ppp/1Nr1pn2/4Q3/8/2B2P2/8/1R5K/w Qe5xNf6 (Kopec-Exercises-p.13) #27
5k2/pbp2r2/1p5p/4R1pP/1PP5/8/PKBQ1q2/8/w Qd2d8+ (Kopec-Exercises-p.13) #28
r7/5k1p/2pP2p1/1p6/1q3B2/1p2Q1P1/1P6/rNK1R2R/b Ra1xNb1+ (Kopec-Exercises-p.13)
#29


begin examples from (Kopec-Exercises-p.29)
1q4r1/p3r1pk/1p2b1Rp/3pNp1P/3P4/2P3Q1/PP6/K5R1/w Rg6xBe6 (Kopec-Exercises-p.29)
#1
7k/pp5p/2p5/3bb2q/8/2B5/PP2N1PP/5Q1K/w Qf1f8+ (Kopec-Exercises-p.29) #2
6k1/7p/4p3/1p1n1Pp1/8/7K/Pr5P/3Q4/b Rb2g2 (Kopec-Exercises-p.29) #3
1r3rk1/ppR2npp/8/6P1/4p1P1/1B2P3/1PP5/1K5R/w Rc7xNf7 (Kopec-Exercises-p.29) #4
r4r2/6kp/2pqppp1/pbR5/3P4/4QN2/PP3PPP/2R3K1/w Pa2a4 (Kopec-Exercises-p.29) #5
r2q2k1/pQ2bppp/4p3/8/3r1B2/6P1/P3PP1P/1R3RK1/w Bf4b8 (Kopec-Exercises-p.29) #6
4r2k/5p1p/3B1b1P/5P2/2pp4/P7/6PQ/6K1/w Bd6e7 (Kopec-Exercises-p.29) #7
7r/1pR5/6k1/3p4/p3n1np/8/PPP3PP/5R1K/b Ne4g3+ (Kopec-Exercises-p.29) #8
8/8/4p3/4P3/7R/k5p1/B6r/K7/w Rh4xRh2 (Kopec-Exercises-p.29) #9
2qr2k1/pp2bppp/8/4B3/1n6/P4B1P/3Q1PP1/3R2K1/w Qd2xRd8+ (Kopec-Exercises-p.29)
#10
8/5p2/1p6/p3Pp2/P1k2P2/Rb6/3BK3/1r6/b Kc4d4 (Kopec-Exercises-p.29) #11
5rk1/pp3ppp/3p4/3Pp3/3r1n1q/5PN1/PPB4P/R1Q1R1K1/b Qh4h3 (Kopec-Exercises-p.29)
#12
8/pQRq2pk/4p2p/3r1p2/3P4/4P3/PP3PPP/6K1/b Rd5c5 (Kopec-Exercises-p.29) #13
3r1k2/3rqp1p/p7/7P/5pQ1/2BB4/1PP3K1/8/w Qg4g7+ (Kopec-Exercises-p.29) #14
4r1k1/3qP2p/p5p1/1p2Q3/8/8/6PP/5RK1/w Rf1f8+ (Kopec-Exercises-p.29) #15
3r2k1/pRp2p2/6pQ/5b2/2B5/2qP2P1/P6P/6K1/w Bc4xPf7+ (Kopec-Exercises-p.29) #16
2r5/3k2p1/q2p1nP1/p3p3/1pR3bp/3P4/PP3R2/K1Q2B2/w Rc4xRc8 (Kopec-Exercises-p.29)
#17
2r2r2/3qbpkp/p3n1p1/2ppP3/6Q1/1P1B3R/PBP3PP/5R1K/w Rh3xPh7+
(Kopec-Exercises-p.29) #18
k1rR3r/pp2P1pp/2q5/1p6/5BQ1/8/PPP2PPP/2K5/w Qg4xRc8+ (Kopec-Exercises-p.29) #19
r2q1rk1/ppp1ppbp/2np1np1/8/2PPP3/2NBBQ1P/PP3PP1/R3K2R/b Nf6d7
(Kopec-Exercises-p.29) #20
r3qrk1/p2pbppp/1pn1n3/2p2N2/Q7/6P1/PP2PPBP/R1BR2K1/w Rd1xPd7
(Kopec-Exercises-p.29) #21
6k1/4pr1p/p2p1PNQ/8/1qr1P3/5P2/P1b5/K2R3R/w Ng6xPe7+ (Kopec-Exercises-p.29) #22
5rk1/r1q2p1p/p1b1pQ2/2Pp1p2/1R6/3BP3/P4PPP/5RK1/w Rb4g4+ (Kopec-Exercises-p.29)
#23
3r4/1ppb1ppk/p6p/4n1PQ/4Pq2/2P2p2/PP3P1P/R3RBK1/b Rd8h8 (Kopec-Exercises-p.29)
#24
5r2/1pbq1rk1/p4ppp/2pPp3/2P1P1PQ/4N1R1/PP5P/5RK1/w Ne3f5+ (Kopec-Exercises-p.29)
#25
r6k/ppp3p1/5NQ1/4nqN1/6b1/8/PPP2PPP/4R1K1/w Qg6e8+ (Kopec-Exercises-p.29) #26
5r1k/p6p/2b1p2Q/2P1Pp2/5P2/8/r5P1/7K/b Rf8f7 (Kopec-Exercises-p.29) #27
3Q4/1p3pk1/p3p1pp/4q3/6PK/5R1P/P4P2/7r/w Rf3xPf7+ (Kopec-Exercises-p.29) #28
r3r1k1/pq3p1p/4pQp1/1p6/2pP2N1/2P4R/PP3PbP/R5K1/w Ng4h6+ (Kopec-Exercises-p.29)
#29
1k3r2/1ppn3p/p7/5bpr/3N4/3P2B1/PPP3P1/2KRR3/w Nd4xBf5 (Kopec-Exercises-p.29) #30
r4rk1/3b1p1p/p5p1/1p2Q3/3N2n1/1P4Pq/PB3P1P/1R2R1K1/w Qe5g7+
(Kopec-Exercises-p.29) #31
kr6/5Rp1/p2q1p2/N6n/4r3/1Q4P1/5PK1/1R6/w Rf7a7+ (Kopec-Exercises-p.29) #32
r3r3/p1p2p1k/3p2pp/2p5/5n2/2N2B2/PPR1PP1q/3RQK2/b Re8e3 (Kopec-Exercises-p.29)
#33
8/5pkp/5qp1/2Rp1n2/8/3PPNP1/rr3PKP/2Q2R2/b Rb2b1 (Kopec-Exercises-p.29) #34
5r2/2p3pk/1r1p3b/p1q1p3/6R1/P2P1p2/BPPQ1P1P/2K3R1/w Qd2xBh6+
(Kopec-Exercises-p.29) #35
rn1qr3/pb5p/1p3b1R/5Pp1/2pp2k1/3B4/PP1B2PP/5RK1/w Bd3e4 (Kopec-Exercises-p.29)
#36


begin examples from (Kopec-Exercises-p.105)
5r2/3q1kp1/1p2pr1p/2p1R2P/p1PpQP2/6P1/PPP5/2K1R3/w Pa2a3 (Kopec-Exercises-p.105)
#1
3k2q1/1p1r4/5pBP/3P1n2/p2B4/P7/1P4P1/5RK1/w Bd4b6+ (Kopec-Exercises-p.105) #2
2r2rk1/1bqnbpp1/1p1ppn1p/pP6/N1P1P3/P2B1N1P/1B2QPP1/R2R2K1/b Bb7xPe4!
(Kopec-Exercises-p.105) (from Bratko-Kopec test) #3
r1b2rk1/2q1b1pp/p2ppn2/1p6/3QP3/1BN1B3/PPP3PP/R4RK1/w Nc3d5,Pa2a4
(Kopec-Exercises-p.105)  #4
1q2r1k1/1b1n2pp/p3pn2/8/1p2PP2/1N1B4/4Q1PP/2B2R1K/w Pe4e5
(Kopec-Exercises-p.105) #5
3q1r2/p2r1pbk/bpn3pp/3Pp3/7P/1P2BN2/P1BQ1PP1/2RR2K1/w Ph4h5
(Kopec-Exercises-p.105) #6
3q1r2/p3n1bk/bp4pp/3rp3/7N/1P2B3/P1BQ1PP1/2RR2K1/w Qd2xRd5
(Kopec-Exercises-p.105) #7


begin examples from (Kopec-Exercises-p.111)
2rq1rk1/p5bp/bp1ppnp1/2p5/4PP2/P1NPBN1P/1P1Q1KP1/3RR3/b Pd6d5
(Kopec-Exercises-p.111) #1
1rb1r1k1/2qn1pbp/3p2p1/1pnP4/2p1PP2/2N1B1NP/1PB2QP1/R4RK1/w Pe4e5
(Kopec-Exercises-p.111) #2
r2q1rk1/ppp2pbp/2np1np1/3Pp3/4P3/2N1BP1P/PPPQBP2/R3K2R/b Nc6d4
(Kopec-Exercises-p.111) #3
r1b2rk1/pp2qp1p/4p1p1/Q2nN3/8/3R2P1/PP2PPBP/2R3K1/w Pe2e4
(Kopec-Exercises-p.111) #4
4r1k1/2rb1pp1/p3p2p/1p1pP3/3K1P2/1P1B2P1/P1P2R1P/R7/w Pg3g4
(Kopec-Exercises-p.111) #5
4r1k1/p4pp1/1p3q1p/n1prp3/2P1Q3/2P1PB1P/P4PP1/3R2K1/w Rd1xRd5
(Kopec-Exercises-p.111) #6


begin examples from (Kopec-Exercises-p.115)
rnbqkb1r/pp2pppp/2p2n2/3P4/2P5/8/PP1P1PPP/RNBQKBNR/w Pd5xPc6?
(Kopec-Exercises-p.115) wins a pawn but is bad #2
r1bqkbnr/pp1npppp/2p5/8/3PN3/8/PPP1QPPP/R1B1KBNR/b Nd7f6 (Kopec-Exercises-p.115)
#3
r1bqkb1r/pp1p1ppp/2p2n2/4P3/2Bp4/8/PPPP1PPP/RNBQ1RK1/b Pd7d5
(Kopec-Exercises-p.115) #4
rn1qkbnr/pp2ppp1/2p3bp/8/7P/5NN1/PPPP1PP1/R1BQKB1R/w Nf3e5
(Kopec-Exercises-p.115) #5
r1bqkb1r/pp2pppp/2p2n2/4N3/3P4/8/PPP2PPP/R1BQKB1R/b Nf6d7
(Kopec-Exercises-p.115) #6
r1b2rk1/ppp2pp1/2n1pq1p/b2p4/2PP4/PQNBPN2/1P3PPP/R3K2R/b Pe6e5
(Kopec-Exercises-p.115) #7
r1bqk2r/pp1pppbp/2n2np1/1Bp5/4P3/2N2N2/PPPP1PPP/R1BQR1K1/b Nc6d4?
(Kopec-Exercises-p.115) is bad. ...o-o is better. #8
r1b1k2r/ppq2pp1/2n2n1p/2p1p3/2P1P3/2PB1N1P/P3QPP1/R1B1K2R/w Nf3h2
(Kopec-Exercises-p.115) #9
r1bq1rk1/p2p1ppp/1pn1pn2/2p5/2PPP3/P1PB4/4NPPP/R1BQK2R/b Nf6e8
(Kopec-Exercises-p.115) #10
r1b1k1nr/ppqp1pbp/6p1/1B2p3/2N1PB2/5Q2/PP3PPP/R4RK1/w Nc4xPe5
(Kopec-Exercises-p.115) #11
r3k2r/pp1bb1pp/1q2pn2/3pB3/1P6/2PB4/P4PPP/RN1Q1RK1/w Nb1d2
(Kopec-Exercises-p.115) #12


begin examples from (Kopec-Exercises-p.119)
4k3/8/2P5/3K4/8/8/8/8/w Kd5e6 (Kopec-Exercises-p.119) (also Kc5) #1
4k3/8/8/8/8/8/4PK2/8/w Kf2e3 (Kopec-Exercises-p.119) #2
8/8/5k1K/p6P/P7/8/8/8/w Kh6h7 (Kopec-Exercises-p.119) #3
8/8/8/2p5/8/8/1kP5/3K4/w Pc2c4 (Kopec-Exercises-p.119) #4
5k2/5p2/8/4P3/2K1P3/8/8/8/w Pe5e6 (Kopec-Exercises-p.119) #5
8/3k2p1/1p5p/1p1pP3/1P1P1PP1/8/7K/8/b Pg7g5 (Kopec-Exercises-p.119) #6
8/1p3pk1/p3p1pp/4P3/5P2/P7/1P2K1PP/8/b Pg6g5? (Kopec-Exercises-p.119) ...g5? is
bad #7
8/8/p4p2/5p1p/Pk1K4/5PPP/8/8/w Ph3h4 (Kopec-Exercises-p.119) #8
8/5k2/7P/8/8/5K2/8/1B6/w Bb1h7 (Kopec-Exercises-p.119) #9
k1N5/2p5/8/1P6/8/8/7K/8/w Nc8b6+ (Kopec-Exercises-p.119) #10
4n3/pp5p/6k1/2P2pp1/5p2/2B2P2/PPK3PP/8/w Bc3e5 (Kopec-Exercises-p.119) #11
6k1/5pp1/8/B2n4/5P2/P4KPp/8/8/b Nd5e3 (Kopec-Exercises-p.119) #12
6b1/6p1/5k2/1p5p/P3B3/1P1K3p/8/8/w Pa4a5 (Kopec-Exercises-p.119) #13
8/8/8/2p2Bp1/5p1p/2p1bPkP/6P1/5K2/b Pg5g4 (Kopec-Exercises-p.119) #14
8/6pp/8/1N6/2n2P2/4k1P1/P1Kp3P/8/b Nc4a3+ (Kopec-Exercises-p.119) #15
8/8/kP6/2R1K3/8/8/1p6/8/w Rc5b5 (Kopec-Exercises-p.119) #16
8/8/6p1/7p/7P/8/pk1K4/2R5/w Rc1a1 (Kopec-Exercises-p.119) #17
5k2/1p4pP/p7/1p1p4/8/2r3K1/6PP/8/w Kg3f2 (Kopec-Exercises-p.119) (Kg4? Kf4? Kh4?
all lose.) #18
r7/4R3/8/8/4p3/5k2/8/4K3/w Ke1d2 (Kopec-Exercises-p.119) #19
6K1/3k2P1/8/8/8/8/4R3/7r/w Re2e4 (Kopec-Exercises-p.119) #20
8/8/2k5/6R1/6K1/2r2P2/8/8/w Rg5e5 (Kopec-Exercises-p.119) #21
8/7R/4p3/k4P2/8/1K6/3rP3/8/w Pf5f6 (Kopec-Exercises-p.119) #22
6R1/2pk4/P2p3p/1P4p1/8/r5P1/7P/6K1/w Pb5b6 (Kopec-Exercises-p.119) #23
2r5/6k1/7p/pR4p1/P4p2/5P1P/6P1/6K1/b Rc8c1+ (Kopec-Exercises-p.119) #24
8/6Q1/8/8/4q3/4p3/1K6/4k3/w Qg7g1+ (Kopec-Exercises-p.119) #25




Alexander Kotov: Think like a grandmaster.
B.T. Batsford ltd, 1971. ISBN=0-7134-3160-1.

I have tried to use "!" to indicate a move that kotov thinks is
clearly *the* unique best move in this position. Moves without "!" are
just good moves, not so clear they are the only good moves. Hence
perhaps don't be too worried if you choose another. This differs from
my normal convention, which is that the answer is the answer,
regardless of "!"s.

I should really have gone thru carelfully and removed all positions
from the present set, in which there was not a unique best move, but I
was lazy (or prefered to keep the data intact) so I didn't.

As usual, moves with "?" are definitely bad and you should be
penalized for choosing them.

1brr2k1/1b3pp1/pp2pqnp/4N2Q/3P4/1B4R1/PP1B1PPP/4R1K1/w Ne5g4 (Kotov_TLaG) #1
r1r3k1/p4ppp/bpq1Nn2/4R3/1PBR4/2Q1PP2/6PP/6K1/w Pb4b5! (Kotov_TLaG) #3
3b1kn1/6p1/3q1p2/4pPP1/pP1pP1N1/3P1NQ1/1rr5/5RRK/w Qg3h3! (Kotov_TLaG) #4
5rk1/6pp/5P2/1q4P1/1pp2Q1P/7K/1P1p4/2B2R2/b Qb5d7+! (Kotov_TLaG) #11
3q1rk1/pp2ppbp/6p1/5b2/3p1Q2/1P1P1NP1/P1r1PPBP/R2K3R/b Qd8a5 (Kotov_TLaG) #12
2k1b3/p4nQ1/1p1q4/2pPpPpB/2P1P3/P1P2P2/5K2/8/b Qd6h6! (Kotov_TLaG) #13
r1bq1rk1/2pp1ppp/p4n2/1p2P3/5P2/1BP5/P1P3PP/R1BQK2R/b Pc7c5! (Kotov_TLaG) #15
2k5/2b5/pp6/4p3/1P4P1/1KP2p2/1P1R4/8/w Rd2d5! (Kotov_TLaG) #16
r4rk1/p4ppp/qp2p3/b5B1/n1R5/5N2/PP2QPPP/1R4K1/w Bg5f6! (Kotov_TLaG) #17
4r1k1/1p3ppp/pb6/2npq1B1/3N4/Q1P3N1/PP3KPP/3R4/w Pb2b4! (Kotov_TLaG) #20
4r1k1/1p3ppp/pb3q2/2np4/8/Q1P2NN1/PP3KPP/2BR4/b Qf6g6! (Kotov_TLaG) #20a
1r4nk/1p1qb2p/3p1r2/p1pPp3/2P1Pp2/5P1P/PP1QNBRK/5R2/b Qd7xPh3+! (Kotov_TLaG) #22
r2q1rk1/p1p2p2/bp2p1np/n2pP1p1/2PP3B/P1P2P1N/2Q3PP/RB2K2R/w Nh3f4! (Kotov_TLaG)
#23
r4rk1/pp4b1/2bpp2p/4q1p1/2P3p1/1P1QP3/P3NPP1/1BR2RK1/b Kg8f7! (Kotov_TLaG) #24
5bk1/2n1qr2/p1Q2pp1/2p1p3/4P3/2N1BPP1/PP6/2KR4/w Qc6b6! (Kotov_TLaG) #25
rn5k/1p2qpp1/pB1pn2p/4p3/4P1Q1/1BP3P1/PP3P1P/3R2K1/w Qg4h4! (Kotov_TLaG) #26
r5k1/1n1bpp2/p5pp/3Pq3/1p2pN2/1P2P3/P1R2PPP/3Q1BK1/w Qd1d4! (Kotov_TLaG) #27
8/p2PB1pk/1p5p/3Qq3/2p3K1/2Pn1P2/6PP/8/w Qd5d6! (Kotov_TLaG) #28
2r2qk1/1R3n1p/p3p1p1/3pB3/P4Q2/7P/5PP1/6K1/w Be5b2 (Kotov_TLaG) (Qf6 also wins,
probably more wins too) #32
3r2k1/1b3pb1/p3pq2/1p2N3/3P1nQ1/2R3P1/PP3P1P/1B4K1/b Rd8xPd4 (Kotov_TLaG) is
simplest win #33
5rk1/1p3ppp/2q1b3/p2pQ3/2rP4/PnB3P1/1P3PBP/3RR1K1/w Pf2f4 (Kotov_TLaG) #35
6k1/3bbpp1/p3pn2/1p2q1N1/1P5Q/2N3P1/P3PP1P/2B3K1/w Qh4h8+! (Kotov_TLaG) #36
5rk1/4Qp1p/n4bp1/p5N1/P4q2/5B1P/1P3P2/2R2RK1/w Qe7xPf7+! (Kotov_TLaG) #37
3N4/1p6/8/p7/2P2k2/1KP1p3/8/8/w Nd8e6+ (Kotov_TLaG) #38 1.Kc2? loses to Kg3!
2r3k1/3n1pp1/2pq3p/1pNp4/1PnP2b1/3BPN2/R1Q2PPP/6K1/w Bd3h7+ (Kotov_TLaG) #39
r1bq1knr/pp3pbp/6p1/1B1p4/3p1P2/3P4/PPP3PP/RNBQ1RK1/w Nb1d2? (Kotov_TLaG) #42
1rb2r1k/1p1n2q1/p2Q2p1/P2Npn1p/2P1N2P/6P1/1R3PB1/1R5K/w Ne4g5? (Kotov_TLaG) #43
8/p4p2/3p1k2/2pPnPp1/2P3B1/r6P/1Q4RK/4q3/b Ra3xPh3+? (Kotov_TLaG) #45
8/p2Rbk1p/6p1/8/2rN4/1P6/P6K/8/b Rc4c7? (Kotov_TLaG) #46
2rq1rk1/pb3p1p/1p2pbp1/3p3R/2PP4/PP5R/1B3PPP/3Q1BK1/b Pd5xPc4! (Kotov_TLaG) #47
2r1r1k1/pb2bppp/1pn2n2/3p4/2P2q2/2N2N2/PB2QPPP/1BRR2K1/w Nc3xPd5 (Kotov_TLaG) or
cxd5, the latter is a simpler and hence preferable win. #48
kr6/p4r2/2p1p3/2Pb2PP/2BR1P2/4R3/P7/2K5/w Re3xPe6! (Kotov_TLaG) #51
r3k2r/pppnqp2/5n1p/3p1Q2/1b1P3p/2NBPN2/PP4PP/R3K2R/b Qe7xPe3+! (Kotov_TLaG) #52
1r6/2p2rkp/p1npbpp1/1qpN4/4P3/PNQ1R2P/1PP2PP1/3R2K1/w Nd5xPc7! (Kotov_TLaG) #53
1q1r2k1/pp1b3p/1n1r1pp1/2pP1p2/2P2Q2/1B3N1P/PP3PP1/4RRK1/w Nf3d4! (Kotov_TLaG)
#54
r1q2rk1/pb1pbp1p/np2p3/5p2/2P5/P1N2NP1/1PQ1PPBP/R2R2K1/w Pb2b4! (Kotov_TLaG) #55
4r1k1/ppp2p2/4b2p/2p5/2P1n1p1/4PNB1/PP3PPP/2RK4/w Nf3h4! (Kotov_TLaG) #56
5r2/q5k1/3pQpp1/2p1n2p/4P2P/6PB/5P2/3R2K1/w Bh3f1 (Kotov_TLaG) (Qxd6 or Rxd6
both lose) #57
2r1qr1k/1n1bb2p/p2p3N/1p1Ppn2/1P6/5N1P/P1BBQP2/2R1R1K1/w Nf3xPe5! (Kotov_TLaG)
#58
8/5pk1/7p/5Qp1/3N4/P2nq1P1/6KP/8/w Qf5d5 (Kotov_TLaG) #59
r7/N4pbp/4b3/Pk1p4/1Pr5/4B3/5PPP/2RR1K2/b Kb5a4 (Kotov_TLaG) #60
6k1/3R1p2/8/4p2p/P2bN1p1/6P1/2r2P1P/5K2/w Rd7d8+! (Kotov_TLaG) #61
2r1k2r/pp1b1ppp/4p3/3qP3/Pn1P4/2p2P2/3BB1PP/R1Q1NRK1/b Nb4a2! (Kotov_TLaG) #62
2b1r2r/2p1qpk1/1p1p1npp/p2P4/2P1p1P1/2P1PP2/P1Q2KP1/1B2RNR1/b Nf6xPg4+
(Kotov_TLaG) #63
5r1k/5p2/2p1n1pp/p3P2N/P5QP/4RP2/7q/4BKRr/w Nh5f6 (Kotov_TLaG) #64
3rn1k1/1pq1r1p1/2p1p1Bp/p2p4/3P1P2/4P2P/PPQ3P1/2R2RK1/w Rf1f3! (Kotov_TLaG) #67
r4rk1/pb1qn1pp/1pnNp3/3pPp2/PP1P1P2/5N2/3Q2PP/R3KB1R/w Pa4a5! (Kotov_TLaG) #69
r4rk1/4npbp/5qp1/p2p4/Pp6/3QB3/1PP2PPP/R2N1RK1/b Pd5d4! (Kotov_TLaG) #72
r3r1k1/pb2qppp/1pp1p3/4P3/2BP4/P1Q1P3/1P4PP/3R1RK1/w Qc3e1 (Kotov_TLaG) #73
r4r2/1ppqn1bk/p2p1npp/3Pp3/4P3/2NQB1NP/PPP3P1/1K1R3R/b Pb7b5 (Kotov_TLaG) #74
r1bq1rk1/pp3ppp/2np1n2/2p1p3/2PP4/P1PBP3/4NPPP/R1BQ1RK1/w Pe3e4 (Kotov_TLaG) #76
r1b1k2r/2q1bppp/p1np1n2/1pp1p3/3PP3/2P2N2/PPBN1PPP/R1BQR1K1/w Pa2a4 (Kotov_TLaG)
#78
2r2rk1/Q1pq1pbp/2pp1np1/8/4P3/2N5/PPP2PPP/R1B2RK1/w Qa7a6 (Kotov_TLaG) #79
rnb1k2r/pp3ppp/3p4/q1p1p3/2PP4/P1P1P3/2QN1PPP/R3KB1R/w Pd4xPe5 (Kotov_TLaG) #81
2br1n2/1p1r1kp1/p1p2p1p/2PPp3/1P2P3/1NN2P2/5RPP/R5K1/w Nb3a5 (Kotov_TLaG) #82
r4rk1/ppq1ppbp/2n2np1/2p5/2P5/2NPB1P1/PP3PBP/R2Q1RK1/b Rf8d8 (Kotov_TLaG) #85
r4rk1/1b2qppp/5b2/p2P4/B1p5/2P3Q1/P4PPP/R1BR2K1/w Bc1f4! (Kotov_TLaG) #86
r4rk1/pp2nppp/1qn5/1B1p1b2/P2N4/1N2P3/1PPQ2PP/R4RK1/w Nd4xNc6? (Kotov_TLaG) #88
rn3rk1/pp4bp/4pnp1/2p5/8/2N1PN2/PP3PPP/R1BK3R/w Kd1e2 (Kotov_TLaG) white almost
surely wins #90
2bk4/2rn1p2/p3p1p1/P2p2P1/1N1P3P/1K2PB2/8/R7/w Bf3e2 (Kotov_TLaG) white wins #92
r1b1k2r/pp3ppp/2p5/2npP3/1b3P2/2N1P1Pq/PPB4P/R1BQK2R/w Ke1f2! (Kotov_TLaG) #93
3r2k1/1b2q1pp/p4p2/1pQnp3/1P6/P5P1/4PPBP/2R1N1K1/w Qc5a7 (Kotov_TLaG) #94
rnbq1rk1/pp4bp/3p4/2pPpp1n/2P5/2NBBP2/PPQ1N1PP/R3K2R/b Pe5e4! (Kotov_TLaG) #95
r4rk1/1p1b2bp/p2p4/2pPq3/2P1Pn2/3B1P1P/PPQN1B2/2KR3R/w Bd3f1 (Kotov_TLaG) white
manages to draw although at a disadvantage #96
r2qr1k1/np1b1ppp/1Pp1pn2/p7/P1pP4/B1Q1PN2/5PPP/1R2KB1R/b Na7b5! (Kotov_TLaG) #97
2R5/1r2ppbk/4n1p1/1p5p/p2P4/1B2PPBP/P3K1P1/8/w Bb3xNe6! (Kotov_TLaG) #98 (PxB;
Rb8 RxR; BxR b4; Kd3 Bh6; f4! shutting black's B out of game.
r4rk1/pp1b1pp1/1q1b1n1p/nPp5/2Pp4/3P1NP1/PBQN1PBP/R4RK1/w Ra1e1 (Kotov_TLaG) #99
r2q1rk1/p2bbppp/1pn5/1B1p4/3P4/5N2/PP3PPP/R1BQR1K1/w Qd1a4 (Kotov_TLaG) #100
8/pp3k1p/2n2pp1/1p1r4/5P2/PPB1PP1P/4K3/7R/w Pe3e4 (Kotov_TLaG) was followed by
the mistake ...Rh5? #101
r4rk1/2p1bpp1/p1n1n1p1/Pq1pP3/8/1NP1BN2/Q4PPP/1R3RK1/w Nf3d4! (Kotov_TLaG) (also
Qc2?) #102
r1b1k2r/p4ppp/1pn1p3/qB6/3PpB2/bQP2N2/P4PPP/1R2K2R/b Bc8d7 (Kotov_TLaG) white
then wins with Nd2! #103
r2q1rk1/pp3ppp/1b6/5n1Q/3nN3/P6P/BP3PP1/R1B2RK1/w Ne4g5! (Kotov_TLaG) (also Bg5)
#104
r2qrnk1/pb2bppp/1pp2n2/3p4/3P1B2/2N2NP1/PPQ1PPBP/2RR2K1/w Nf3e5 (Kotov_TLaG)
#107
r2q1rk1/pp2ppbp/1np3p1/n2p4/3PP3/2NBB2P/PPP1QPP1/3R1RK1/b Pe7e5! (Kotov_TLaG)
#108
r1b2rk1/pp1n1pbp/1qpp2p1/4p1B1/2PPP1n1/2N2NPP/PP3PB1/R2Q1RK1/b Pe5xPd4!
(Kotov_TLaG) #109
r1bqk2r/p2nbp1p/1pp1pp2/8/2BPN3/5N2/PPPQ1PPP/R3K2R/w Qd2h6! (Kotov_TLaG) #110
r1q1kb1r/pp3ppp/1npnp3/8/3PP3/2N2NP1/PP3PKP/R1BQ1R2/w Pd4d5! (Kotov_TLaG) #113
7q/1b1knn2/4p1p1/1pppPpP1/P4P1N/2P3K1/2N1B3/1Q6/b Nf7xPg5! (Kotov_TLaG) #115
3rqrk1/pb4pp/3Rpp2/Rp6/5P2/1P6/1PPQ2PP/2B4K/b Rd8xRd6! (Kotov_TLaG) #116
r6k/2pq1rbp/1p1p4/p2P2R1/P1P1Bp1P/1P3P2/6Q1/2K3R1/w Ph4h5! (Kotov_TLaG) #117
r4r2/4p1k1/1q1p1pp1/nppP4/P7/1P3BP1/1Q2PPK1/R6R/w Pa4xPb5 (Kotov_TLaG) #118
r2r1nk1/ppqb1pp1/2p1pn1p/4N3/2PP4/2N5/PPB1QPPP/3RR1K1/w Pc4c5! (Kotov_TLaG) #119
r1b2rk1/ppq1bppp/2pp4/P3P3/2B1P1n1/2NQB3/1PP2PPP/R4RK1/b Pd6d5! (Kotov_TLaG)
#120
r1q2k1r/pp1n3p/8/2b4n/P7/2N1PP2/1P2Q1PP/R1BR2K1/w Pb2b4 (Kotov_TLaG) #121
3r1rk1/pbqnbppp/1p2pn2/2p5/2PP4/2NBPN2/PB2QPPP/3R1RK1/w Pd4d5! (Kotov_TLaG) #123
1r3rk1/2qnppb1/b2p2pp/p1pP4/P1P5/3B1NP1/2QBPP1P/1R3RK1/w Rb1b5! (Kotov_TLaG)
#124
1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1/b Rd8d4! (Kotov_TLaG)
#125
2rq3r/pb1n1pk1/2n1p1p1/2PpP3/3P2P1/P2B1N2/1B2Q3/2R2RK1/w Qe2e3 (Kotov_TLaG) #127
3r1rk1/2pqb1pp/ppn1bp2/2p1p3/4P3/2PPBPN1/PPQN2PP/3R1RK1/w Nd2b3 (Kotov_TLaG)
#128
r4rk1/pp1nqppp/2pb1n2/3pp3/P7/1P1PPB2/1BPN1PPP/R2Q1RK1/w Pg2g3 (Kotov_TLaG) #129
r2q1rk1/pbpn1pbp/1p3np1/3p4/3P4/1PN1PN2/PBQ1BPPP/R4RK1/b Pa7a6 (Kotov_TLaG) #130
2rr2k1/1b1nqpbp/p4np1/2pp4/8/1P2PN2/PB2NPPP/1QRR1BK1/b Bg7h6! (Kotov_TLaG) #131
rn1q1rk1/ppp2pp1/4p2p/2b2b2/4n3/3P1NP1/PPP2PBP/R1B1QRK1/w Pd3xNe4 (Kotov_TLaG)
#132
r3k2r/3nbppp/1q1p4/p2Pp2b/P7/2B3PP/1P2NPBK/R2Q1R2/w Pg3g4 (Kotov_TLaG) is best
#133
2r2rk1/pb1nqppp/1ppp1n2/4p3/Q1PPP3/2N2NP1/PP3PBP/3RR1K1/w Pb2b4,Nf3h4,Rd1d2
(Kotov_TLaG) 3 plans possible #134
r2q1rk1/pp1nbppp/2p2n2/3pp3/2PP2b1/1PNBPN2/PB3PPP/R2Q1RK1/w Bd3e2 (Kotov_TLaG)
#136
1r1q1rk1/p1pnppbp/3p2p1/8/2Pn4/2N3PP/PP2PPB1/R1BQ1RK1/b Pc7c5? (Kotov_TLaG) #137
rnbqnrk1/1p3pbp/p2p2p1/2pPp3/2P1P1PP/2N1BP2/PP6/R2QKBNR/w Bf1d3 (Kotov_TLaG)
#138
1rb2rk1/4q1bp/1n1p1np1/p2Pp3/2p1P1P1/4BPNN/PPB4Q/R3K2R/b Nb6xPd5! (Kotov_TLaG)
#139
r4rk1/pp3ppp/1qp2n2/4nN2/8/1B2P3/PP3PPP/2RQ1RK1/w Qd1d6 (Kotov_TLaG) #140
r3r1k1/pb2qppp/1pp2n2/3p4/3Pn3/1PN1P1P1/PB3PBP/R2Q1RK1/w Rf1e1 (Kotov_TLaG) #141
r3r1k1/pp1q1pp1/2nbbn1p/3p4/1P1P1P2/PQNB3P/3BN1P1/R4RK1/b Be6f5! (Kotov_TLaG)
#142
r4rk1/pp2qppp/3bbn2/3p4/8/1P2PB2/PB1NQPPP/R4RK1/w Pe3e4! (Kotov_TLaG) #144
2rr2k1/ppp1qpp1/1n2pn1p/3b4/3P4/P1Q2NP1/1P2PP1P/R2RBBK1/w Pb2b4 (Kotov_TLaG)
#145
3qrbk1/pbr2p1p/1pp2np1/3p4/3P4/1P1Q2P1/PB1NPPBP/3RR1K1/w Pe2e4! (Kotov_TLaG)
(also Nb1?) #146
5k2/r1p2pp1/4b2p/8/8/P4N1P/1P3PP1/2R3K1/w Nf3d4 (Kotov_TLaG) #147
r5nk/pp1br2p/2p1p3/3p4/3P4/2NB2R1/PPP3PP/2K2R2/w Nc3b1! (Kotov_TLaG) #148
3r2k1/5pp1/p1R5/2B5/2P1n2p/7P/P1P3P1/5K2/b Rd8d2! (Kotov_TLaG) #149
8/5pp1/6k1/R3B2n/7r/8/6K1/8/w Kg2f3 (Kotov_TLaG) #151
r3r1k1/2p3pp/p1np4/1p3b2/5P2/1PP2N2/P4BPP/R3R1K1/b Bf5d7 (Kotov_TLaG) #152
8/5kp1/p7/Np1b1P1p/1Bp1n1P1/2P4P/8/6K1/w Pg4xPh5 (Kotov_TLaG) (black had just
played ...h7h5! forcing this) #153
2rr2k1/p2qb1pp/1p2bp2/2p1p3/1n1n4/1PNP2P1/PB1NPPBP/2RQR1K1/w Pf2f4 (Kotov_TLaG)
#156
3b4/r4pk1/3p4/3BpKP1/1pP5/1P3R2/r4P2/6R1/b Pe5e4? (Kotov_TLaG) #157
8/p6k/3P2p1/2Q5/Pp1n1r2/1P4N1/5RPq/4K3/w Rf2xRf4? (Kotov_TLaG) #158
r1b3kr/p3bpp1/qp2p2p/4P2P/3RpPQ1/1NN5/1PP3P1/2K4R/w Nc3xPe4 (Kotov_TLaG)
(...Kh7, 2. Ng5+! wins) #159


Tim Krabbe: Chess Curiosities, George Allen & Unwin  London 1985.
Full of bizarre moves, underpromotions, castling, and 3-time repetition
funny rule themes, so ought to be very good for exercising bugs
in your chess program. 127 positions excerpted.
Positions 333, 334, and 78 really do have all those pieces.

begin examples from (krabbe)

1r2r1k1/p2p1p2/1p4p1/2pbn1Q1/2P5/6P1/PP2PP1P/R3K2R/w Ke1g1C (krabbe) 6
2kr1q2/2p2ppr/1pnp4/p3P2b/2PPP3/2Q1B1NP/PP6/R3K2R/b Bh5f3? (krabbe) 7
r1bqk2r/pppp1Npp/8/2bnP3/8/6K1/PB4PP/RN1Q3R/b Ke8g8C (krabbe) 8
2bqkb1r/2p1n1p1/p1pp1p2/4P2p/4P2P/2NQBN2/PrP2PP1/R3K2R/b Pd6xPe5? (krabbe) 15
8/1k6/3P4/8/8/8/1r6/R3K3/w Pd6d7 (krabbe) 16
k7/P7/P7/P7/P7/P7/P7/R3K3/w Ke1c1C,Ke1d2 (krabbe) 35
r3k3/pB1pp1K1/N3r1p1/3Qp3/8/8/8/8/w Bb7c6 (krabbe) 36
8/8/6p1/6p1/6p1/6k1/6P1/2BBK2R/w Ke1g1C (krabbe) 37
4B3/4n1r1/p7/1p1P1kr1/3P1p2/1bb3pp/3N2P1/1nqNKQRR/w Qf1xPf4+ (krabbe) 38
5q2/B4n2/p1Pp1Np1/3Pkp1N/B1P2p1P/p6b/PP3P1p/R3Kn2/w Ke1c1C (krabbe) 40
b5rn/1kPBpp2/pP4p1/PR1Pp3/PP2P3/8/2NP4/R3K3/w Ke1c1C (krabbe) 42
r1r1k3/pp1qn2p/5pp1/3p2N1/6Q1/8/PP3PPP/2R1R1K1/w Re1xNe7+ (krabbe) 47
3qk2r/p4pbp/2b1p1p1/1p6/3PP3/4B3/P3NPPP/3Q1RK1/w Pd4d5 (krabbe) 48
r3k2r/1bq2pbp/p3nnpN/1p2p3/4P1P1/P1N5/1PP1Q1BP/R1B2RK1/w Rf1xNf6 (krabbe) 50
rnbq1bk1/p4p1p/2BN2p1/2pP4/1r6/4P1B1/PP3PPP/R2QK2R/b Bc8a6 (krabbe) 52
2rr2k1/5p2/4p1p1/qp2P3/2b4P/P1Q2B2/5PP1/2R1K2R/b Bc4f1 (krabbe) 53
r3k2r/1p2p3/4P1P1/pP6/4K3/R6p/5b1B/8/w Pg6g7 (krabbe) 56
r3k1r1/1p2p1P1/4P3/pP6/4K3/7R/7B/4b3/w Bh2b8 (krabbe) 57
4k2r/4p3/4K2p/5Q2/8/8/8/4b3/w Qf5b5+ (krabbe) 58
r3k3/2Qp3R/1p6/1b2K3/4p3/8/5p2/8/w Ke5d4 (krabbe) 59
r3k3/3p1p2/1p1K1p2/1p1b1P1P/3p3p/8/8/2Q5/w Ph5h6 (krabbe) 60
r3k2r/p2p4/p1pP2p1/5pN1/5p2/1Q3p2/PP4b1/KB6/w Qb3b7 (krabbe) 61
r2qk2r/3n1p1p/p4p2/2b1pN2/Q1B1p3/7P/PP3PP1/R1B3K1/w Nf5g7+ (krabbe) 63
r1b3Q1/pp6/1kn5/2bp4/5Q2/4QK2/2q2P2/1q3BNR/w Rh1h6 (krabbe) 78 a famous 5-queen
game hoax by Alekhine. Rh6 really is the best move, says Krabbe, but does not
win.
2kr4/p1p3pp/2n5/1pKPNb2/7q/2N5/PP1P2PP/R1BQ3R/w Qd1a4 (krabbe) 92
K2k4/N1q3pp/2P5/r7/8/8/PP4PP/R1B4R/w Bc1g5+ (krabbe) 94
3r4/1Pk3pp/K3b3/pBB1Pp2/8/2P5/PP4PP/7q/w Ka6a7 (krabbe) 96
1k1r3r/1Pp2ppp/5n2/1pb4q/3P1pb1/1KP2N2/PP4PP/R1BQ1B1R/b Rd8xPd4 (krabbe) 99
1k1rr3/pPp2ppp/4bn2/1Nb5/2KP1p1q/2P2N2/PP4PP/R1BQ1B1R/w Kc4xBc5 (krabbe) 100
1k1rr3/1PNn1ppp/4b3/pK2N3/3P1p2/2P5/PP4PP/R1Bq1B1R/w Ne5xNd7+ (krabbe) 101
1k1rN3/1P3ppp/K3b3/p3n3/3P1B2/2P5/PP4PP/q4B1R/b Rd8d5 (krabbe) 103
5rk1/1p6/p7/4Pb1p/3pNP2/3K2P1/PPBQ1RPr/6q1/w Kd3c4 (krabbe) 139
8/3R4/4N3/P1b4p/6k1/8/4pP1P/6K1/w Ph2h3+ (krabbe) 159
7r/p7/6k1/1R6/8/1P4p1/PP3PP1/6K1/b Rh8h1+ (krabbe) 160 all moves lose, so this
may is the best try
8/8/N1Pkn3/8/8/4B3/pPK5/8/w Be3c5+ (krabbe) 162
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8/w Pc5c6 (krabbe) 164
1R6/2pk4/1P6/8/3r4/K7/P7/8/w Rb8d8+ (krabbe) 165
8/p7/kpp5/6R1/1P4P1/8/1pPP2P1/3K4/w Pb4b5+ (krabbe) 166
3r4/5p1k/4p3/1R5P/2p5/2p5/1p6/4R1K1/b Rd8d1 (krabbe) 167
8/8/8/7K/2k5/3pp3/8/5R2/w Kh5g4 (krabbe) 170
2k5/pp6/2p5/P1q1pp1b/R1P1p2p/1P2P2P/1B1R1PPK/8/b Pf5f4? (krabbe) 172
8/2pp4/8/2Pk1P1R/2p2pK1/P2PP3/nP2p3/8/w Rh5h1 (krabbe) 174
6r1/p2P2pN/2k1P3/5P2/8/8/8/5K2/w Pf5f6 (krabbe) 176
5r1k/1p1p1p2/6PP/1K1P2N1/8/r7/2P5/8/w Pg6g7+ (krabbe) 177
5r1k/1p1p1pR1/r2p1pPP/1K4PP/8/8/2P1P3/8/w Rg7h7+ (krabbe) 178
1N4br/3pkPp1/6PP/8/pp3P2/8/P4r1P/6K1/w Ph6xPg7 (krabbe) 179
6R1/5Bpk/4p2p/2Rp3P/2p5/1p6/p1b4K/1q6/w Rg8h8+ (krabbe) 185
4K2k/2B1R3/2p3pp/6q1/8/8/8/8/w Bc7e5+ (krabbe) 186
r3r1k1/pp3pbp/1Bp3p1/8/2bP4/Q1n2N2/P4PPP/3R2KR/b Nc3e2+ (krabbe) 188
2Q2rk1/qp3pp1/pN2p2p/4p1b1/4P3/1B6/PP3PP1/2R3K1/w Nb6d7 (krabbe) 190
2k1r2r/ppn3pq/b7/5p2/5Qn1/2N1B1P1/1P3PB1/2RR2K1/w Qf4xNc7+ (krabbe) 191
5nr1/1B6/1p3p2/1p1P1Kp1/1p1kN1Q1/1P1p1Pp1/3P1p2/q5r1/w Bb7c6 (krabbe) 192
r1bqr1k1/1p3p1p/p4bpQ/8/3n1B2/2N3P1/PP3PBP/R4RK1/b Nd4f5 (krabbe) 193
1R6/6pK/5p2/4p3/1B1p3n/8/p1p1pp2/1k3b2/w Bb4a3+ (krabbe) 194
1r3rn1/p5bk/b2pP2p/q2P1p2/1p2nP1N/3QB2P/PP4B1/3NRRK1/w Qd3xNe4 (krabbe) 195
1B1rbr1b/1p6/5pRp/1R3P2/3P3k/K1p2B1p/7p/5n2/w Rg6g4+ (krabbe) 196
1k2r1r1/pp6/4N3/P7/6q1/8/4Q3/4K3/w Qe2e5+ (krabbe) 197
2nb4/3n1p2/8/3pp3/3pk1Pp/1p3N1P/P1PBK2P/8/w Bd2h6 (krabbe) 198
8/1p6/8/pBP4r/p3R2P/K7/3p1p1p/3k4/w Bb5e2+ (krabbe) 199
5rk1/p5bp/4p1p1/8/2pP4/Pr4nP/1P1N1BP1/1R1RK3/b Rf8xBf2 (krabbe) 200
r1b2r1k/pp3ppB/8/8/1n6/4P1P1/PP3PP1/2R1K2R/w Bh7b1+ (krabbe) 205
5r2/8/8/7n/BN6/K2PBP2/4p2N/4k3/w Nb4c2+ (krabbe) 206
6R1/k7/P7/PP6/8/1K1p2B1/6pP/6br/w Bg3b8+ (krabbe) 207
nr6/3R1p1r/5p2/1p3p2/8/2B1Pp1p/2K1kP2/3N1b2/w Rd7d2+ (krabbe) 208
r1r1bnk1/pp2pp2/2np2p1/3N2N1/4P1PQ/qB2B2P/1bP5/1R3RK1/w Ng5xPf7 (krabbe) 209
6B1/1q1r2p1/nbp4r/PP2p3/1P1k2P1/2N1p1PP/N3K3/B7/w Bg8b3 (krabbe) 210
q5k1/5p2/7Q/r2b1B2/8/8/r2R3K/8/w Bf5h7+ (krabbe) 211
r1r3k1/pp2pp1p/4b2Q/6Pp/4Nq2/3B1P2/PPP5/1K1R4/w Ne4f6+ (krabbe) 212
1q4k1/6pp/3b4/4p3/1pN5/1Q2Rp2/4r3/5K2/w Nc4xPe5+ (krabbe) 214
rr6/4R3/8/3N3b/1p5p/PPpB4/1nPp1p2/1K1k2b1/w Nd5e3+ (krabbe) 215
k4K2/2p4R/3N3n/1R3p2/3B4/8/b7/2qr4/w Rb5a5+ (krabbe) 216
3bB1b1/7n/8/P4R2/1kp3R1/1p3pP1/pP5K/8/w Rf5b5+ (krabbe) 217
b1N1rb2/3p4/r6p/2Pp1p1K/3Pk3/2PN1p2/2B2P2/8/w Nc8e7 (krabbe) 218
b5Nq/K2p4/1P1p4/RBkp1P2/1p5b/8/n1N5/3rr3/w Pf5f6 (krabbe) 219
6r1/P1p5/2b4B/p5p1/k2P4/1R3p1r/p2p2Pb/K2B1R2/w Pg2g3 (krabbe) 220
8/8/1KP5/3r4/8/8/8/k7/w Pc6c7 (krabbe) 246
8/2P5/8/8/3r4/8/2K5/k7/w Pc7c8=R (krabbe) 247
7r/8/7P/1p3KP1/8/8/8/3k4/w Pg5g6 (krabbe) 253
1k6/R7/K7/8/8/8/2p5/8/w Ra7b7+ (krabbe) 254
8/5P2/2P5/8/r7/7k/8/5K2/w Pf7f8=R (krabbe) 255
8/8/8/2P4P/8/2K5/7B/k4r2/w Kc3b4 (krabbe) 256
8/8/2P5/1Pr5/8/8/N7/k2K4/w Na2c1 (krabbe) 257
5B2/5P1N/8/5r2/8/8/6P1/4K2k/w Nh7g5 (krabbe) 258
8/3b4/k2p3P/1p1K3P/1P4r1/8/3R4/8/w Ph6h7 (krabbe) 259
2r5/b4K1k/3RN2p/6P1/8/7r/5p2/4B3/w Pg5g6+ (krabbe) 261
8/7p/6P1/PnP5/8/k3PP1P/p7/K2B2b1/w Pg6xPh7 (krabbe) 262
5n2/P3p3/3pP3/3P3P/1P2p3/4P1pk/1P4p1/6K1/w Pa7a8=R (krabbe) 263
8/8/8/3K4/4R3/p7/8/1k6/w Kd5c4 (krabbe) 266
7r/1p2k3/p1p5/3pp3/P1P3r1/1P1P2pN/4RbP1/5R1K/b Rh8xNh3+ (krabbe) 267
6k1/1pp1rpp1/1b4Pn/pP2p2Q/P1B5/q1PP4/6RP/4R2K/w Qh5xNh6 (krabbe) 268
5r1k/pp4p1/2q3Pp/8/4r2Q/1B6/PP6/3R2RK/w Qh4xPh6+ (krabbe) 269
3rbrk1/1p4p1/2pp2Pp/q4p2/2P2P2/pPN1P3/P2Q4/1K4RR/w Nc3d5 (krabbe) 270
r5k1/3q2Pp/p7/1p5Q/8/7P/1P4P1/5RK1/w Rf1f8+ (krabbe) 271
1r3r1k/p1p4p/2Pp4/1P2p3/P3P1pq/6P1/3Q2pP/3BR1K1/b Rf8f1+ (krabbe) 272
3r1k1r/1pq2P2/2pb3p/p4Q2/P1n5/2P4P/2P5/R1B1R2K/w Qf5f6 (krabbe) 273
8/3P1kPK/6rB/8/8/8/2p5/8/w Pd7d8=N+ (krabbe) 275
8/8/8/7n/8/7N/3kp1K1/5n2/w Nh3g1 (krabbe) 279
8/8/8/8/k7/ppp1N3/8/1K6/b Pc3c2+ (krabbe) 281
8/7P/8/3P4/1p6/1k1K4/p7/8/w Ph7h8=B (krabbe) 283
4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8/w Pa7a8=B (krabbe) 284
8/8/P7/k7/2p5/4K3/p7/1N6/w Pa6a7 (krabbe) 287
4Q3/Pq4pk/5p1p/5P1K/6PP/8/8/8/w Pa7a8=B (krabbe) 289
K6b/8/8/k3P3/7B/8/4n3/8/w Pe5e6 (krabbe) 292
2k5/K7/3RPr2/8/8/8/1b6/8/w Pe6e7 (krabbe) 294
8/7p/6pP/1B4P1/pp6/1k1K4/8/8/w Bb5e8 (krabbe) 296
8/8/7P/k1p5/1p6/3n1K2/3P4/8/w Kf3e4 (krabbe) 298
8/8/2P4p/7P/1p1p4/pPpk1K2/P5P1/8/w Pc6c7 (krabbe) 300
5b2/1B6/1P4k1/4P3/8/8/8/K7/w Bb7e4+ (krabbe) 301
8/1N6/1P6/8/2k5/r7/P7/4KN2/w Nb7d6+ (krabbe) 302
3R4/p1p3n1/k2p4/P7/K1P5/8/8/8/w Pc4c5 (krabbe) 306
2N4K/8/6kP/1n6/8/p7/8/8/w Ph6h7 (krabbe) 308
6B1/4K1k1/8/5P2/8/8/4n2n/8/w Pf5f6+ (krabbe) 310
5b2/8/3P4/8/8/Bp2k2p/1Pp4P/2K5/w Pd6d7 (krabbe) 313
6K1/2k5/3N3P/8/4Pb2/2n4b/8/8/w Nd6e8+ (krabbe) 315
3k1K2/6NP/4b2b/8/4n3/8/8/8/w Ph7h8=B (krabbe) 316
q7/2n5/8/1p1p1Q1p/R1b3p1/b7/ppNK4/1k6/w Qf5f2 (krabbe) 317
8/p3P3/rp6/kp6/1p4PK/1P6/1P5p/4r2R/w Pe7e8=N (krabbe) 319
k7/p7/P5Pp/K4P1P/3p3P/3P4/ppBN1b2/8/w Bc2b1 (krabbe) 322
8/p3B2p/1P5P/3P4/5r2/3k4/8/6K1/w Pb6b7 (krabbe) 324
8/8/5P2/8/2k2p1p/2B1p2P/6P1/2b2K2/w Pf6f7 (krabbe) 326
8/4P2R/5P2/2pk2p1/2n2rP1/1P3R2/B1N4B/2K5/w Pb3xNc4+ (krabbe) 329
8/R7/4kPP1/3ppp2/3B1P2/1K1P1P2/8/8/w Pf6f7 (krabbe) 330
1rN3q1/P2R2PR/B4p1K/Bp1n1P1Q/7p/1B1kPr1P/1Pp3P1/8/w Qh5xRf3 (krabbe) 333
3R2qB/5P2/1N5B/1K3P2/RPP1pR2/1B1Pn3/Rppkn1p1/bQbrrbrb/w Rf4f2 (krabbe) 334
1q5R/P2N4/5p2/2p2p2/2Pk1b1n/6P1/PNpP1P1K/BQ3R1B/w Rh8xNh4 (krabbe) 335
Bq1B1K2/3PpN2/P3Pp2/P1p2P2/2Pk1b1R/1p6/pN1P1P2/QR6/w Pa6a7 (krabbe) 336
3r4/2R1P2N/p3Bp2/K2PkP2/1P5P/2p1P3/pBp1R3/Q2N4/w Nd1xPc3 (krabbe) 337


The object of this file is to present positions in the opening in
which there is thought to be a unique best move. This test will only
be of much interest if the computer taking the test, is playing with
its opening book turned OFF. Otherwise a lot of the answers will be
directly in the book. Of course, it helps to have a book in non-book
positions because of transposition possibilities, but situations where
that is the case, are basically not represented in this file.

First, A. Alekhine: My greatest games of chess
1908-1937, 2 volumes in 1, Dover 1985. AlekhineI is volume I,
1908-1923.  AlekhineII is volumeII, 1924-1937. I'm going by Alekhine's
comments in which he says things like the move was "necessary" or
"best"; in nearly all these cases, something else (i.e. which Alekhine
considered to be a mistake) was played in the game.

begin examples from (AlekhineI)
rnbqkb1r/pppp1ppp/5n2/4p3/2B1P3/2N5/PPPP1PPP/R1BQK1NR/b Nf6xPe4! (AlekhineI) p1
r3kbnr/1ppb1ppp/p7/2p5/4P3/1P6/P1P1NPPP/RNB1K2R/b Pc5c4! (AlekhineI) p4
r1bq1rk1/pppnbppp/4pn2/3p2B1/2PP4/2N1PN2/PPQ2PPP/R3KB1R/b Pc7c5 (AlekhineI) p.9
r1bqkbnr/pp1p1ppp/2n1p3/2p5/2P1P3/2N2N2/PP1P1PPP/R1BQKB1R/b Nc6d4 (AlekhineI)
p19
r1bqkb1r/pppp1ppp/2n2n2/4P3/3N4/8/PPP2PPP/RNBQKB1R/b Nc6xPe5 (AlekhineI) p25
r2q1rk1/ppn1ppbp/2p1bnp1/3P4/3P4/P1NBPN2/1PQ2PPP/R1B2RK1/b Nf6xPd5 (AlekhineI)
p32
r1bqk1nr/2pp1ppp/p1n5/1pb1p3/4P3/1B3N2/PPPPQPPP/RNB1K2R/w Pa2a4! (AlekhineI) p43
r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1BP2N2/PP1PQPPP/RNB1K2R/w Pd2d4 (AlekhineI)
p54
r1bqkb1r/pppp1ppp/2n2n2/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R/b Nc6d4! (AlekhineI)
p60
rnbqkb1r/ppp2ppp/8/3P4/4nP2/5N2/PPP3PP/RNBQKB1R/b Bf8c5 (AlekhineI) p66
rn1qk2r/ppp2ppp/8/2bP1b2/4nPP1/5N2/PPP1Q2P/RNB1KB1R/b Ke8g8C! (AlekhineI) p66
r2qk1nr/ppp2ppp/2npb3/2b1p3/2B1P3/2NP1N2/PPP2PPP/R1BQK2R/w Bc1e3! (AlekhineI)
p82
r3k2r/1pp1qpp1/1pnpbn1p/4p3/2B1P2B/2NP4/PPP2PPP/R2QK2R/w Pf2f3! (AlekhineI) p113
rnbqk2r/pppp1ppp/4pn2/8/1bPP4/2N5/PPQ1PPPP/R1B1KBNR/b Pc7c5 (AlekhineI) p115
rnbqkbnr/pppp1ppp/8/8/2B1P3/8/PB3PPP/RN1QK1NR/b Pd7d5! (AlekhineI) p126
rn1qkb1r/pbpp1ppp/1p2pn2/8/2PP4/5NP1/PP2PPBP/RNBQK2R/b Bf8e7 (AlekhineI) p137
r1bqk2r/pppn1ppp/3bpn2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R/w Pc4c5 (AlekhineI) p140
r1bq1rk1/pp1n1ppp/2p1pn2/3p4/2PP4/2NBPN2/PP1Q1PPP/R3K2R/w Ra1d1! (AlekhineI)
p143
r1bqkb1r/1pp2ppp/p1n1p1n1/2Pp4/3P1B2/2N2N2/PP2PPPP/R2QKB1R/w Bf4e3! (AlekhineI)
p154
r1bqk2r/4nppp/ppnbp3/3p3P/3P4/2N1BN2/PP2PPP1/R2QKB1R/w Ph5h6! (AlekhineI) p154
rnbqkb1r/p2p1ppp/4pn2/1ppP4/2P5/5N2/PP2PPPP/RNBQKB1R/w Bc1g5 (AlekhineI) p158
r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/4P3/1BN2N2/PPPP1PPP/R1BQK2R/w Nf3xPe5 (AlekhineI)
p192
rn1qkb1r/pbpppppp/1p3n2/8/2PP4/2N5/PP2PPPP/R1BQKBNR/w Qd1c2 (AlekhineI) p199
r1b2rk1/pp1nq1pp/2p1p3/3p1p2/2PP4/2QBPN2/PP3PPP/R4RK1/w Ra1c1! (AlekhineI) p220
r1bqkb1r/pppp1ppp/5n2/1B6/3pP3/2N5/PPPP1PPP/R1BQK2R/w Pe4e5 (AlekhineI) p221
r1bq1rk1/pp1nbppp/2p1pn2/3p2B1/2PP4/2NBPN2/PP3PPP/2RQK2R/b Pd5xPc4 (AlekhineI)
p234
r1bqr1k1/pp3ppp/2p1pn2/3n2N1/2BPN3/4P3/PP3PPP/2RQ1RK1/w Ne4g3 (AlekhineI) p234
r1bq1rk1/pppn1pbp/3p1np1/8/2PN4/2N3P1/PP2PPBP/R1BQ1RK1/w Pb2b3 (AlekhineI) p244
rnbqkb1r/pp1p1ppp/4pn2/8/3NP3/8/PPP2PPP/RNBQKB1R/w Nb1c3 (AlekhineI) p245
r1bq1rk1/ppp1nppp/1bnp4/8/3NP3/2P1B3/PP1NBPPP/R2Q1RK1/b Pf7f5! (AlekhineI) p248
r1bqk2r/2p1bppp/p1np1n2/1p2p3/P3P3/1BN2N2/1PPP1PPP/R1BQ1RK1/b Pb5b4! (AlekhineI)
p255

begin examples from (alekhine2)
rnbqkbnr/pppp1ppp/8/8/3Np3/6P1/PPPPPP1P/RNBQKB1R/b Pc7c5! (alekhine2) p11
rn1qkbnr/ppp1pppp/8/4N2b/2pP4/2N5/PP2PPPP/R1BQKB1R/b Nb8d7 (alekhine2) p23
r1bq1rk1/1ppnbppp/p3pn2/3p2B1/2PP4/2N1PN2/PP3PPP/2RQKB1R/w Pc4xPd5 (alekhine2)
p45
rnbqkb1r/pp1ppppp/5n2/2p5/2P5/5N2/PP1PPPPP/RNBQKB1R/w Nb1c3 (alekhine2) p90
rnbqk1nr/ppp2ppp/4p3/8/3Pp3/P1N5/1PP2PPP/R1BQKB1R/b Nb8c6 (alekhine2) p94
2kr1b1r/pp1b1pp1/2n2q1p/8/8/2N1P3/PP1Q1PPP/R3KBNR/w Nc3d5 (alekhine2) p103
r3kb1r/pp2pppp/2n5/qB1n4/3P2b1/2N2N2/PP3PPP/R1BQK2R/w Qd1b3! (alekhine2) p110
r2q1rk1/2p1bppp/p1n5/1p1n4/3P2b1/1B2BN2/PP1N1PPP/R2Q1RK1/w Qd1b1! (alekhine2)
p119
r1bqk2r/pppnnpbp/3pp1p1/8/2BPP3/2N2N2/PPP2PPP/R1BQ1RK1/w Pa2a4 (alekhine2) p124
r2q1rk1/1b1nbppp/pp3n2/2pp2B1/B2P4/2N1PN2/PP3PPP/2RQ1RK1/w Bg5xNf6 (alekhine2)
p129
r1bqkb1r/5ppp/4pn2/1p2N3/3p4/3B4/PP3PPP/R1BQK2R/w Qd1f3! (alekhine2) p133
rnb1kbnr/pp2qppp/3p4/2pP4/4PB2/6P1/PPP4P/RN1QKBNR/w Ng1f3! (alekhine2) p139
r2q1rk1/1pp2ppp/p1n1pn2/8/Pb1P4/4P3/1P1NNPPP/R1BQ1RK1/b Pe6e5 (alekhine2) p173
(open up lines if better developed)
r2qr1k1/1pp2ppp/p1nb1n2/8/P2Pp3/4P1N1/1P1B1PPP/R2QNRK1/b Bd6xNg3! (alekhine2)
p173
r1bqk2r/pp2bppp/2nppn2/1B6/4P3/1NN5/PPPQ1PPP/R1B1K2R/b Ph7h6 (alekhine2) p182
r4rk1/2q1bppp/p2p1n2/npp1p3/3PP1b1/2P2N2/PPB2PPP/R1BQRNK1/w Nf1e3 (alekhine2)
p205
rnbqkb1r/pp3ppp/4pn2/2pP4/3P4/2N2N2/PP2PPPP/R1BQKB1R/b Nf6xPd5 (alekhine2) p249
rnbqkbnr/ppp2ppp/8/3P4/3p4/2P5/PP3PPP/RNBQKBNR/b Ng8f6 (alekhine2) p250
r1b2rk1/ppp2ppp/2n2n2/3q4/1b1P4/2N2N2/PP2BPPP/R1BQ1RK1/b Qd5a5 (alekhine2) p250

A few other examples follow

rnbqkbnr/pppp1p1p/8/4N3/4PppP/8/PPPP2P1/RNBQKB1R/b Ng8f6 std King's gambit
position; the best move, says Horowitz's book on chess openings
rnbqkbnr/pppp1ppp/8/4p3/4PP2/2N5/PPPP2PP/R1BQKBNR/b Pd7d5 std Vienna, only
decent move

Standard opening positions with a unique best move, but which is hard
to find for the uninitiated. Going by statements made in Modern Chess
Openings 13, ed. by W. Korn.

begin examples from (MCO)
rnbqkb1r/pppp1ppp/5n2/4p3/2B1P3/3P4/PPP2PPP/RNBQK1NR/b Pc7c6 (MCO) std bishops
opening
rnbqk2r/pp1p1ppp/4pn2/2p5/1bPP4/2N1P3/PP3PPP/R1BQKBNR/w Ng1e2 (MCO) std nimzo
indian
rnbqkb1r/pp1ppppp/5n2/2p5/2PP4/8/PP2PPPP/RNBQKBNR/w Pd4d5 (MCO) std benoni
r1bqkbnr/pppp1ppp/2n5/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R/b Pe5xPd4 std scotch

Opening positions from Nimzowitsch: Chess Praxis, Dover 1962.

begin examples from (Nimzowitsch_Praxis)
r1bqkbnr/pp3ppp/2n5/2pp4/3P4/2N2N2/PP2PPPP/R1BQKB1R/w Pg2g3 (Nimzowitsch_Praxis)
("a refutation of black's opening") game 65.
r1bqk2r/pppp1ppp/2n2n2/4N3/1b1PP3/2N5/PPP2PPP/R1BQKB1R/b Qd8e7
(Nimzowitsch_Praxis) game 69

Opening positions from Karpov's collected games, David Levy editor, Robert Hale
and Co., London 1975
begin examples from (Karpov)
rnbqr1k1/pp3pp1/3ppn1p/2pP4/1bP1P2B/2NB1P2/PP4PP/R2QK1NR/b Pe6xPd5 (Karpov)
Lukin-Karpov p61
r1bqk2r/2p1bppp/p1np1n2/1p2p3/P3P3/1BP2N2/1P1PQPPP/RNB1K2R/b Bc8b7 (Karpov)
karpov-moles p67
r2q1rk1/1bp1bpp1/p1np3p/1p2p1B1/P2PP3/1BP2N2/1P2QPPP/RN2R1K1/b Be7xBg5 (Karpov)
karpov-moles p67
r1b2rk1/pp2qppp/8/b1P1n3/N1BpP3/P7/1PQ2PPP/R1B2RK1/w Bc4d5 (Karpov)
karpov-timman p69
r3kb1r/2qp1ppp/p1n1p3/2P5/PpB3n1/3QBN2/1PP2PPP/R3K2R/w Bc4xPa6 (Karpov)
vibornov-karpov p77
r5k1/pp1bpp1p/3p2pQ/2q1n1Pn/4P3/1B3PN1/P1P5/2KR3R/b Bd7g4! (Karpov) karpov-gik
p78
2r2rk1/pb1nq1pp/8/2pp1p2/1P2n3/4PN2/PBQ1BPPP/2RR2K1/b Pc5c4 (Karpov)
vaganian-karpov p83
r1bq1rk1/1p1nppbp/p2p1np1/2pP4/2P1P3/2N2NP1/PP3PBP/R1BQ1RK1/b Pb7b5 (Karpov)
karpov-adorjan p96
r2qk2r/pp3ppp/3bpnb1/2p1N3/3P2PP/2P5/PP2QP2/R1B1KB1R/w Bf1g2 (Karpov)
karpov-zaitsev p105
r2qk2r/pp3ppp/3bpn2/1Q2N2P/3pb1P1/2P2P2/PP6/R1B1KB1R/b Nf6d7 (Karpov)
karpov-zaitsev p105
1r1q1rk1/3bnpbp/pp4p1/2pNp3/2P5/3P2P1/P2BPPBP/1R1Q1RK1/w Pa2a4 (Karpov)
barcza-karpov p109
2rq1rk1/pb2bpp1/1p2pB1p/3nN3/2pP4/P1N5/1P2QPPP/1B1R1RK1/b Nd5xNc3! (Karpov)
ivkov-karpov p115
r1bq1rk1/p2n1ppp/1p2pn2/8/1bBP4/2N2N2/PP2QPPP/R1BR2K1/b Bc8b7 (Karpov)
yepez-karpov p117
r2q1rk1/pp2ppbp/1nn3p1/2Pp1b2/3P4/1PN2N1P/P3BPP1/R1BQ1RK1/b Nb6d7 (Karpov)
dementeev-karpov p123
r2qkb1r/1b1p1ppp/p1n1p3/1p6/4PB2/2N3P1/PPPQ1PBP/R4RK1/b Pd7d6 (Karpov)
orlov-karpov p142
r2qkb1r/1p3p1p/p1b2p2/4p3/8/4N3/PPP2PPP/R2QKB1R/w Bf1c4 (Karpov) karpov-taimanov
p143
rnbqkb1r/p1p2ppp/4p3/1p1nN3/2pP4/6P1/PP2PPBP/RNBQK2R/w Pa2a4! (Karpov)
lengyel-karpov p153
r1bqkb1r/1p1n1ppp/p1npp3/6P1/3NPP2/2N1B3/PPP4P/R2QKB1R/b Ph7h6 (Karpov)
karpov-hort p156
r1bqkb1r/1ppp1ppp/p1n5/4p3/B3n3/5N2/PPPP1PPP/RNBQ1RK1/w Pd2d4 (Karpov)
karpov-savon p160
rn2kb1r/1pq2ppp/p2pbn2/4p3/P3PP2/1NN5/1PP1B1PP/R1BQK2R/b Nb8c6? (Karpov)
karpov-mecking p165 this is an error; it is essential to be able to reply to f5
with ...Bc4.
r4rk1/3bbppp/p1npp3/qp6/2P1P3/1P4P1/PB2NPBP/R2Q1RK1/w Pc4c5 (Karpov)
keene-karpov p165
2rr1bk1/2qb1ppp/ppnpp3/8/P1P1PP2/1PB3P1/1Q2N1BP/R4RK1/b Pb6b5! (Karpov)
keene-karpov p165
rnbqkb1r/pppp1ppp/4pn2/6B1/3P4/5N2/PPP1PPPP/RN1QKB1R/b Pc7c5 (Karpov)
korchnoy-karpov p167
r4rk1/1pqbbppp/p1nppn2/8/P3PP2/1NN1B3/1PP1B1PP/R2Q1R1K/b Pb7b6 (Karpov)
karpov-cobo p178
r1bq1rk1/pp2ppbp/2np1np1/8/3NP1P1/2N1BP2/PPPQ3P/R3KB1R/b Bc8e6 (Karpov)
karpov-dueball p181
rnbqkb1r/ppp3pp/5n2/3p1pB1/3P4/5N2/PPP2PPP/R2QKBNR/b Bf8e7 (Karpov)
karpov-enevoldsen p184
r1bq1rk1/1p2ppbp/2np1np1/p7/2BNP3/2N1BP2/PPPQ2PP/R3K2R/w Pa2a4 (Karpov)
karpov-d.byrne p196
r1bq1rk1/pppp2pp/2n2n2/2b1p3/2P2P2/2NP2P1/PP3PBP/R1BQK1NR/w Pf4xPe5 (Karpov)
karpov-bellon p249

E. Znosko-Borovsky: How to play the chess openings, Dover reprint.
begin examples from (Znosko)
r1bqk2r/pp1nbppp/2pp3n/4p1N1/P1BPP3/8/1PP2PPP/RNBQK2R/w Bc4xPf7+ (Znosko) game 1
r1bqk2r/pppp1ppp/2n5/8/2BP4/1Q3N2/P4PPP/b1B2RK1/w Bc4xPf7+ (Znosko) (Greco's
trap in Moller Attack of GP. Previous move was ...B(c3)xR(a1), which this
refutes... white's developmental advantange is too great, is one way to look at
it, another is that there is a [very deep] forced win...) game 2
rn1qk2r/ppp2ppp/8/2bP1b2/4nP2/5N2/PPP1Q1PP/RNB1KB1R/w Nb1c3 (Znosko) (g4 is bad)
game 3
r1bq1rk1/pppnbppp/4pn2/3p2B1/2PP4/2N1PN2/PP3PPP/2RQKB1R/b Pc7c6 (Znosko) is
"forced" game 4
2rr1bk1/p4ppp/1p2p3/8/1P1B4/Pq2P1P1/4QP1P/R3R1K1/b Rc8c2 (Znosko) grabbing 7th
rank game 5
r3k2r/pbqpbppp/2n1p3/2pn4/8/2PBPNN1/PP1BQPPP/R3K2R/b Pg7g5 (Znosko) (Also was
keene #28) game 6
8/8/8/1p5r/p1p1k1pN/P2pBpP1/1P1K1P2/8/b Pb5b4 (Znosko) game 7
8/p4K2/P7/8/8/8/1k6/8/w Kf7e6 (Znosko) game 8
8/8/6kp/p7/1p4P1/1P3K2/P1P5/8/w Pc2c4 (Znosko) game 9
8/1p4p1/pB2k3/P6R/2r1PP1P/8/8/4b1K1/w Kg1g2 (Znosko) game 10
4k3/p1r1r1p1/2q2p1p/3b1P2/3PpNP1/2p1P1R1/P3QK1P/2R5/w Rc1xPc3 (Znosko) game 11
5rk1/p1p3p1/1p2p3/6Qq/5R1P/5bP1/P3PP2/6K1/w Rf4xRf8+ (Znosko) game 12

Positions from "KLOP":
R.D. Keene and D.N.L. Levy: How to play the chess openings,
Batsford, 2nd ed 1980.

begin examples from (KLOP)
r2qk2r/ppp2ppp/2np1n2/2b1p2b/2B1P1P1/2NP1N1P/PPP2P2/R1BQ1RK1/b Nf6xPg4 (KLOP)
p14
r1bq1rk1/ppp2pbp/3p1np1/2nPp3/2P1P3/2N2N2/PPQ1BPPP/R1B2RK1/b Pa7a5 (KLOP) p16
r1bqk2r/pppp1Npp/2n2n2/2b1p3/2B1P3/8/PPPP1PPP/RNBQK2R/b Bc5xPf2+! (KLOP) p73
wilkes-barre
r1bqkbnr/pppp1ppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R/b Pa7a6! (KLOP) p77
r1b1k1nr/1p1p1ppp/p1nQ1q2/4p3/4P3/8/PPP2PPP/RNB1KB1R/w Qd6d1! (KLOP) p92
rnbqkb1r/pp2pppp/3p1n2/8/3NP3/5P2/PPP3PP/RNBQKB1R/b Pe7e5! (KLOP) p98
rn1qkbnr/pp2pppp/2p5/5b2/3P4/6N1/PPP2PPP/R1BQKBNR/b Bf5g6 (KLOP) p124
r1bqkbnr/ppp1pppp/2n5/3p4/2PP4/8/PP2PPPP/RNBQKBNR/w Nb1c3 (KLOP) p142
r1bq1rk1/pppnnpbp/3p2p1/3Pp3/2P1P3/2N5/PP2BPPP/R1BQNRK1/w Ne1d3 (KLOP) p168
r1b1qrk1/pp1nb1pp/2p1pn2/3pNp2/2PP4/1PN3P1/P3PPBP/R1BQ1RK1/w Ne5d3! (KLOP) p183
r1b2rk1/pp5p/2pbpn2/3p1ppq/2PP4/1PBNPPP1/P3Q1BP/R4RK1/w Bc3b4! (KLOP) p184
r1b1kbnr/pp3ppp/1qn1p3/2ppP3/3P4/2PB1N2/PP3PPP/RNBQK2R/b Pc5xPd4 (KLOP) p121



It seems to me that what the computer-chess world needs is something
like Reinfeld's 1001 position test set, only for "positional" and not
tactical play.  That is, where the compensation you get for making the
right move is probably not going to be seen by an evaluation function
that only knows about material and checkmate. (Unless it looks very
deep... Or at any rate, if you know more, you are likely to find the
answer faster...)

The Bratko-Kopec 24 position set was perhaps a step in this direction,
but is too small. Berliner, Kopec and Northam were attempting to
construct a large high quality test set with complete coverage of a
subject classification scheme they'd invented for chess themes...
(See: Advances in Computer Chess, 6) but they abandoned the project.

I have tried to pick hard examples of a "positional" nature although
the distinction is blurred (material does matter, some are indeed
"totally" tactical, and looking ahead far enough would see material
gain in some of them... also some are easy, not hard... and also it is
harder to be certain of problem correctness than in a pure-tactics
test set...)

They include:
26 Test positions from Raymond Keene & Andrew Whitely:
Ray Keene's good move guide, Oxford University Press 1982.

10 Test positions from Max Euwe:
Strategy and Tactics in Chess, David McKay Co., NY.

18 Test positions from Reuben Fine: The world's great chess games,
Bonanza Books NY 1956.

25 Test Positions from Aron Nimzowitch: My system, edited by Lou Hays,
Hays Publishing Inc., Dallas Texas 1991.

10 from F. Reinfeld: The complete chessplayer, Prentice-Hall 1953

10 from H. Berliner, D. Kopec, E. Northam: A taxonomy of concepts for
evaluating chess strength, Adv. Computer Chess 6, ed. D.F. Beal, Ellis
Horwood 1991, pages 179-191.

4 from Andrew J. Palay: Searching with probabilities, Pitman 1985

Finally at the end I have appended the Bratko-Kopec set (24) from
D.Kopec and I. Bratko: A comparison of human and computer performance in chess,
page 57-72 in  Advances in Computer Chess III,
edited by M.R.B. Clarke, Pergamon 1982. (These in turn were mostly or
entirely extracted from Hans Kmoch: Pawn power in chess, Dover publications.)

and 16 test positions from David Levy: "How computers play chess," and
a few from Levy and R. Keene: How to beat your chess computer, and 8
other problems.  These were mostly snarfed off the net and are now
converted to have the same format as the other positions.

Note, the LEVYKEENE set includes some positions *not* featuring a
single correct move, but instead featuring a definitely incorrect move
(with "?") which computers might foolishly want to make.


begin examples from (Keene)
r1b3k1/1pqnb1pp/p1p1pr2/PPPp1p2/3P4/2B1PN2/2Q1BPPP/R4RK1/w Pb5xPa6 (Keene) #8.
1q1n4/2p2pbk/Qp1p1npp/1P1Pp3/1P2P3/1B2BP1P/3N2P1/6K1/w Bb3c4 (Keene) #11.
2krr3/pp3ppp/2b5/6q1/3P4/4N3/PP3PPP/R2Q1RK1/w Ra1c1 (Keene) #12.
1q2r1k1/r4pp1/p1p4p/2Ppn1b1/5B2/3B2P1/PPQ1RP1P/R5K1/w Bf4xNe5 (Keene) #13.
r4rk1/pp2q1pp/2n1pn2/3p2B1/8/2P3P1/P3PPBP/R2Q1RK1/w Pc3c4 (Keene) #15.
r2qk2r/2p1bppp/p1n1n1B1/1p1pP3/8/2P4P/PP1N1PPN/R1B1QRK1/b Pf7xBg6 (Keene) #16.
3r1rk1/p3qp1p/2bb2p1/2pp4/8/1P2P3/PBQN1PPP/2R2RK1/b Pd5d4 (Keene) #17.
6k1/p4p2/2r1p1p1/3p1n2/1q1P3p/1P5P/P3NPP1/1Q1R2K1/b Pa7a5 (Keene) #18.
1r2q1k1/p1rn3p/1pp1pp2/P2n4/1P1P4/Q4N2/5PPP/2RR1BK1/w Pb4b5 (Keene) #19.
r2qrnk1/pp3bpp/1bp2p2/1P1p4/3P1P2/3BNNP1/P1Q2P1P/R4RK1/b Bf7h5 (Keene) #21.
6k1/4bpp1/1nq1p2p/pp1b4/3P4/PPQ2BPP/1B1N1PK1/8/b Bd5xBf3+ (Keene) #22.
2rq1rk1/pp2bpp1/2pn1n1p/3p4/3P1B1P/2NBP3/PPQ2PP1/R3K2R/w Pg2g4 (Keene) #25.
4r2k/p1p1rpp1/1pbpq2p/4n3/2P1PB2/2P2PP1/P3BR1P/2QR2K1/b Pf7f5 (Keene) #27.
8/8/4p3/1k1n1p2/pbpP1Pp1/2N3P1/PP6/4BK2/b Bb4xNc3 (Keene) #29.
3rn1k1/p4p2/2p1p1p1/4P1q1/P1B1N3/1P3R2/2nr1PP1/4RQK1/b Qg5xPe5 (Keene) #32.
5k2/p1p3p1/8/1p2p3/7P/5PP1/P3KP2/8/b Pa7a5 (Keene) #34.
4r1k1/p1p3pp/npRb4/5p2/3Pp3/P3B1P1/1P2PPBP/6K1/w Be3f4 (Keene) #35.
3r1k2/2q4p/4bpp1/1pp1p2n/2n1P3/2P1N1PP/1P2QP1N/R2B2K1/w Ne3d5 (Keene) #38.
r2q1rk1/pppb1ppp/3b1nn1/3Pp1N1/1PB5/P1N1P2P/1B3PP1/R2QK2R/w Ng5e6 (Keene) #41.
r1r3k1/1p1n1pbp/1q1Bp1p1/p3P1N1/PnBp4/1R5P/1P2QPP1/5RK1/b Rc8xBc4 (Keene) #42.
3r2k1/pp4bp/2n1pnp1/2p5/8/2N1PN2/PP2KPPP/R1B5/w Nf3g5 (Keene) #44.
r2r2k1/ppp2pb1/2n1bnpp/4p3/4P3/2N1BN1P/PPP1BPP1/R2R2K1/b Nf6e8 (Keene) #48.
r1bq2k1/p5bp/3p1nnr/P1pPp3/2P1Pp2/1NN2R1P/4B1P1/1R1QB1K1/b Ng6h8 (Keene) #49.
r3k2r/ppqb2pp/4p3/3pn3/P1p5/B1P5/2P1BPPP/R2QR1K1/w Qd1d4 (Keene) #50
q4r2/1bn1ppkp/3p1np1/1ppP4/r3P3/2PBQNNP/1P3PP1/3RR1K1/w Pe4e5 (Keene) #63
rnbqk2r/p3ppbp/3p1np1/2pP4/2B1P3/2N2N2/PP3PPP/R1BQK2R/w Pe4e5 (Keene) #70.


begin examples from (Euwe)
1k1r4/1p6/p1prnp2/P3p1p1/1PP1P2p/5P2/2R1NKPP/1R6/b Rd6d2 (Euwe) #page 24.
2rr2k1/5pp1/p2qp2p/1p1n4/3P4/1P3N1P/P2QRPP1/2R3K1/b Qd6f4 (Euwe) #page 34.
1r3rk1/pbpp1qpp/1p1b4/2nN2P1/2PQ1p1P/2B5/PP2PPB1/2KR3R/w Ph4h5 (Euwe) #page 41.
r1bq1rk1/1p1nbppp/p1p2n2/3p2B1/3P4/2NBPN2/PPQ2PPP/R3K2R/w Pg2g4 (Euwe) #page 42.
r4rk1/p3bppp/2p1bn2/1q1p4/N7/4BPP1/PP2P1BP/2RQ1RK1/w Be3c5 (Euwe) #page 46.
r1b1rnk1/1p2qppp/p1p5/3p3n/3P4/P1NBPN2/1PQ2PPP/2R2RK1/w Pb2b4 (Euwe) #page 48.
r1b1r1k1/1p3pp1/p3pq1p/7Q/3P1P2/4P3/P5PP/1BR2RK1/w Pg2g4 (Euwe) #page 55.
3rr1k1/p1p2ppp/1p3n2/2PP4/8/4BP2/P4P1P/1R1R2K1/w Pd5d6 (Euwe) #page 156.
6k1/5pp1/2Q4p/1p3q2/1P1P1N2/8/3n1PP1/6K1/w Pd4d5 (Euwe) #page 160.


begin examples from (Fine)
r1b1r1k1/1pp1n1pp/p1pb1p2/8/4PP2/1NN5/PPP3PP/R1B2RK1/w Pf4f5 (Fine) #page 54.
8/8/6P1/2k5/4KP2/1p6/1N1r4/8/w Ke4f3 (Fine) #page 58.
2r1rk2/1b3pp1/p1nq1b1p/1p2p2Q/3pP1NP/3P2P1/PP2B2N/R5RK/b Nc6e7 (Fine) #page 64.
8/pr2k1pp/8/R7/8/4PK2/P5PP/8/w Ra5a6 (Fine) #page 84.
r2qr1k1/1p3pp1/2b2n1p/p1bpN3/5P2/P1N1P3/1PQ3PP/1B2RR1K/w Pe3e4 (Fine) #page 92.
6b1/p5k1/2p1q3/5QP1/3PpPp1/P3P1K1/1P6/8/w Kg3xPg4 (Fine) #page 119
4k3/1R5p/r4pp1/p1P5/3PP3/6P1/6KP/8/w Rb7b6 (Fine) #page 124.
r1bqr1k1/pppn1ppp/3bpn2/3p4/2P5/1P3NP1/PB1PPPBP/RN1Q1RK1/w Pd2d4 (Fine) #page
126.
r1b1kb1r/p2p1pp1/n3pq1p/1NpP4/1pP5/5N2/PP2PPPP/R2QKB1R/w Pe2e4 (Fine) #page 136.
8/1p1nk1n1/p2p1ppp/P2Pp3/1P2PP1P/4K1PB/8/2B5/w Pf4xPe5 (Fine) #page 173.
2rr2k1/1p1bbp1p/pn2pp1B/8/8/4PN2/PP3PPP/1BRR2K1/b Nb6a4 (Fine) #page 177.
r1q2r1k/p2n2pp/1p1p1b2/2pP1p2/2P1pP2/1QB1N1P1/PP2P2P/R4R1K/w Ne3xPf5 (Fine)
#page 194.
r2q1rk1/pp4pp/2n1p1n1/3pPp2/8/P2B1NQ1/1PP2PPP/RNB1R1K1/b Nc6b8 (Fine) #page 196.
2r1rnk1/pp3p1p/5bp1/q2p4/2pP4/1PN1PN2/P1Q2PPP/R4RK1/w Pb3b4 (Fine) #page 203.
2r5/7p/p1n1kn2/Pp2pp2/1P4P1/2NK1P2/1R1N3P/8/b Pe5e4+ (Fine) #page 228.
3qk2r/3b1pp1/1r1Bp1p1/pp1pP3/n1pP4/2P3Q1/2P2PPP/RR3BK1/b Rb6xBd6 (Fine) #page
240.
r1bq1rk1/pp2ppbp/n4np1/8/2QpP3/2N2N2/PP2BPPP/R1BR2K1/b Pe7e5 (Fine) #page 251.
rn1q1rk1/p3bppp/b3p3/1p1pB3/3P4/2N3P1/PP2PPBP/2RQ1RK1/w Pe2e4 (Fine) #page 255.


begin examples from (Nimzo)
rnb1kb1r/1p3ppp/p5q1/4p3/3N4/4BB2/PPPQ1P1P/R3K2R/w Ke1c1C (Nimzo) page 169_2.
r2q1rk1/2p1bppp/p2p1n2/2p1p3/4P3/3P1N2/PPP1QPPP/R1B2RK1/w Nf3d2 (Nimzo) planning
Nc4 page 176_1.
3r1k2/3r1pb1/1ppp1qpp/p1n5/2P2N2/1P2PPR1/P2R1P1P/1B1Q3K/b Ph6h5 (Nimzo) #page
179
r4rk1/3q2pp/p2bp3/1b1p1p1n/1p1PP3/6PP/PP1B1PBK/1NRQ2R1/b Pf5xPe4 (Nimzo) #page
181_1
3r4/pp1rk1pp/n3pp2/8/2RN1P2/4P3/PP2K1PP/2R5/w Pa2a4 (Nimzo) #page 185
3rqnk1/pb4pp/1p1b1p2/2pP1N2/8/1P1Q4/PB3PPP/1BR3K1/w Bb2xPf6 (Nimzo) #page 192_2
r4rk1/ppp2ppp/2p2q2/4p2b/1b2P3/2NP1N1P/PPP2PP1/R2Q1RK1/w Pg2g4 (Nimzo) #page
197_2.
2r4r/np1kbppp/1q2p3/pN1pPn2/P2P4/1P3NP1/1B3P1P/R2Q1K1R/w Qd1d3 (Nimzo) NxNa7 is
a big mistake. #page 203_1
8/8/5R2/1k2pp2/3r1P2/2BK4/p7/8/w Kd3c2 (Nimzo) #page 208_2
r2qk2r/pbpnbppp/1p1p1n2/3Pp3/1PP1P3/P1NB1N2/2Q2PPP/R1B2RK1/w Ph2h3 (Nimzo) #page
209
2rq1rk1/pb1nbpnp/1ppp2pQ/3Pp3/1PP1P1P1/P2B1NN1/1B3P1P/2R2RK1/b Pa7a6 (Nimzo)
#page 210
5rnk/2q1b1np/BpPp2p1/1P2p1P1/4P3/P3QNN1/1B3P2/6K1/b Ph7h6 (Nimzo) #page 211_1.
4brk1/1pq1b1pp/2p1pn2/2PpNpB1/1P1P2PP/2Q1P3/4BP2/4K2R/w Bg5f4 (Nimzo) #page
214_1.
1rqn2k1/Rp3b1p/1Pp3p1/N1PpPpPP/5P2/2QBP3/3K4/8/w Pe5e6 (Nimzo) #page 214_3.
r2qkb1r/1p1b3p/p3pppQ/2p5/2P5/4P3/PB1P1PPP/RN3RK1/w Qh6h3 (Nimzo) #page 215_2.
1r1q1rk1/ppp2ppp/2n1pn2/8/1bNP4/1QN1P3/PP3PPP/R1B2RK1/b Nf6d5 (Nimzo) #page
218_2.
rn3rk1/pp2bpp1/2b1p1qp/2p5/2P1N3/2P3P1/PP2QPBP/R1B2RK1/w Pf2f4 (Nimzo) #page
223_1.
rn1qk1nr/ppp3pp/3bbp2/4p3/4P3/2N2N2/PPPP2PP/R1BQKB1R/w Pd2d3 (Nimzo) #page 225.
1r2rb1k/3q2pp/2n1bp2/2p1pN2/1pP1P1P1/3PB3/1P1RQN1P/5RK1/b Pg7g6 (Nimzo) #page
226.
r1b2r1k/1pq3pp/p1nb4/5p2/2Bp1P2/3P1QN1/PP1BR1PP/5RK1/w Ng3h1 (Nimzo) #page 228.
r1b2rk1/p2qnppp/1p1p1n2/2p5/2PPpP2/1NP1P2P/P3B1P1/R1B1QRK1/b Ph7h5 (Nimzo)
planning Qf5, Qh7 #page 232.
6k1/ppp3r1/5rp1/1b1p1p1p/2nP1P1P/2P2NR1/q1P1Q1PK/4R1B1/b Nc4d6 (Nimzo) #page
249_2
r3k2r/pp1nnppp/1q2p1b1/4P3/5PB1/8/PP4PP/R1BQNR1K/w Qd1e2 (Nimzo) #page 251_1
r1bqk2r/pp2nppp/2n1p3/2bpP3/8/3B1N2/PPP2PPP/RNBQK2R/w Bc1f4 (Nimzo) #page 258_1
8/8/8/1p5r/p1p1k1pN/P2pBpP1/1P1K1P2/8/b Pb5b4 (Nimzo) # lund-nimzowitsch


begin examples from (Reinfeld)
8/2k3p1/1p2pb1p/p2p3P/P4P2/2PK1P2/8/1R6/w Pc3c4 (Reinfeld) (175, page 108.
increases rook mobility)
6k1/7p/b1p5/5pP1/PBp2P2/7P/8/4K3/w Ph3h4 (Reinfeld) (184, page 125, threatens to
make passer, keeping black busy)
2r2rk1/p1qn1ppp/1p2pn2/8/3P1P2/2PQ4/P3N1PP/R1B2RK1/b Qc7c4 (Reinfeld) (195 page
148. Fixing white's weakness.)
r1b2rk1/4q1pp/4p3/pp1p4/3P4/3QP1B1/P4PPP/R4RK1/w Rf1c1 (Reinfeld) (196 page 148,
seizing open file and later getting R on 7th)
3r4/1p2bp1k/1P1q2pp/1RpPp2n/4P3/4QN1P/2B2PP1/6K1/w Qe3c3 (Reinfeld) (197 page
152. Forces black to weaken his 2nd rank)
4nr1k/1p1br2p/p1p1pNpN/2PpP1P1/PP1P4/7R/7P/5RK1/w Rh3f3 (Reinfeld) (198 page
152. Forces a protected passer.)
rnbq1rk1/pp3ppp/2p1pn2/8/PbpP4/2N2NP1/1P2PPBP/R1BQ1RK1/b Pc6c5 (Reinfeld) (283
page 247. Doesnt keep the pawn, but keeps pressure)
r2q1rk1/1ppbbppp/p1np1n2/4p3/3PP3/2P2N2/PPB1QPPP/RNB2RK1/b Pe5xPd4 (Reinfeld)
(279 page 243. xchging to free his cramped game.)
rnbq1rk1/pp3pbp/3ppnp1/2pP4/2P1P3/2N2N2/PP2BPPP/R1BQ1RK1/b Pe6e5 (Reinfeld) (289
page 254. Keeps lines closed and barricades.)
rn1q1rk1/pp3pnp/3p2p1/2pP2N1/2P5/2P5/P3QPPP/R1B1R1K1/w Ng5e4 (Reinfeld) (290
page 255, accomplishes several positional purposes)


begin examples from (Berliner-Kopec-Northam)
rnbqk2r/pp2ppbp/5np1/8/2BP4/2N2N2/PP3PPP/R1BQK2R/w Qd1a4+
(Berliner-Kopec-Northam)
r1b2rk1/4bppp/pqp1pn2/2pp4/3PP3/1P3N2/PBPN1PPP/R2QR1K1/w Bb2a3
(Berliner-Kopec-Northam)
r2qkb1r/pp1bpppp/2np1n2/8/2BNP3/2N1B3/PPP2PPP/R2QK2R/b Nf6g4
(Berliner-Kopec-Northam)
rnbqkb1r/1p2pppp/p7/3P4/3Nn3/8/PP3PPP/RNBQKB1R/w Qd1a4+ (Berliner-Kopec-Northam)
r1bqkb1r/p1p2ppp/2n2n2/1p1Pp1N1/2B5/8/PPPP1PPP/RNBQK2R/w Bc4f1
(Berliner-Kopec-Northam)
rn2kb1r/1pqbpp1p/p5p1/2nP4/8/4QN2/PP3PPP/RNB1KB1R/w Qe3c3
(Berliner-Kopec-Northam)
r1bqk2r/ppp1npbp/3p1np1/3Pp3/2P1P1PP/2N1B3/PP3P2/R2QKBNR/w Pf2f3
(Berliner-Kopec-Northam)
2r2rk1/pp1b1ppp/1n2pn2/BP6/4P3/P3NP2/3K2PP/R4B1R/w Pa3a4
(Berliner-Kopec-Northam)
r1bqk2r/pppp1ppp/2n2n2/2b1p3/2P1P3/2N2N2/PP1P1PPP/R1BQKB1R/w Nf3xPe5
(Berliner-Kopec-Northam)
r2qr1k1/pppb1ppp/2np1n2/2b1p3/2P5/P1NPP1P1/1P2NPBP/R1BQ1RK1/b Pa7a5
(Berliner-Kopec-Northam)


begin examples from (palay)
8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8/b Rb3xPb2 (palay) (page 58)
8/p7/1ppk1n2/5ppp/P1PP4/2P1K1P1/5N1P/8/b Nf6g4+ (palay) (page 123)
8/3b3k/2p5/2Pp2p1/3P4/6P1/8/2K3N1/w Ng1f3 (palay) (page 127)
1r1r2k1/1bqnbppp/ppp1p3/8/PPNP4/2N1PBP1/2Q2P1P/1RR3K1/b Be7xPb4 (palay) (page
128)


begin examples from (Bratko-Kopec)
1k1r4/pp1b1R2/3q2pp/4p3/2B5/4Q3/PPP2B2/2K5/b Qd6d1+ (Bratko-Kopec) bk001
3r1k2/4npp1/1ppr3p/p6P/P2PPPP1/1NR5/5K2/2R5/w Pd4d5 (Bratko-Kopec) bk002
2q1rr1k/3bbnnp/p2p1pp1/2pPp3/PpP1P1P1/1P2BNNP/2BQ1PRK/7R/b Pf6f5 (Bratko-Kopec)
bk003
rnbqkb1r/p3pppp/1p6/2ppP3/3N4/2P5/PPP1QPPP/R1B1KB1R/w Pe5e6 (Bratko-Kopec) bk004
r1b2rk1/2q1b1pp/p2ppn2/1p6/3QP3/1BN1B3/PPP3PP/R4RK1/w Nc3d5,Pa2a4 (Bratko-Kopec)
bk005 also Pa2a4 is a cook as was acknowledged by Kopec some years later in
kcmdm exercises p105#4, see also hort&jansa T17,A04; the same position is
repeated in those 2 data sets
2r3k1/pppR1pp1/4p3/4P1P1/5P2/1P4K1/P1P5/8/w Pg5g6 (Bratko-Kopec) bk006
1nk1r1r1/pp2n1pp/4p3/q2pPp1N/b1pP1P2/B1P2R2/2P1B1PP/R2Q2K1/w Nh5f6
(Bratko-Kopec) bk007
4b3/p3kp2/6p1/3pP2p/2pP1P2/4K1P1/P3N2P/8/w Pf4f5 (Bratko-Kopec) bk008
2kr1bnr/pbpq4/2n1pp2/3p3p/3P1P1B/2N2N1Q/PPP3PP/2KR1B1R/w Pf4f5 (Bratko-Kopec)
bk009
3rr1k1/pp3pp1/1qn2np1/8/3p4/PP1R1P2/2P1NQPP/R1B3K1/b Nc6e5 (Bratko-Kopec) bk010
2r1nrk1/p2q1ppp/bp1p4/n1pPp3/P1P1P3/2PBB1N1/4QPPP/R4RK1/w Pf2f4 (Bratko-Kopec)
bk011
r3r1k1/ppqb1ppp/8/4p1NQ/8/2P5/PP3PPP/R3R1K1/b Bd7f5 (Bratko-Kopec) bk012
r2q1rk1/4bppp/p2p4/2pP4/3pP3/3Q4/PP1B1PPP/R3R1K1/w Pb2b4 (Bratko-Kopec) bk013
rnb2r1k/pp2p2p/2pp2p1/q2P1p2/8/1Pb2NP1/PB2PPBP/R2Q1RK1/w Qd1d2 (Bratko-Kopec)
bk014
2r3k1/1p2q1pp/2b1pr2/p1pp4/6Q1/1P1PP1R1/P1PN2PP/5RK1/w Qg4xPg7+ (Bratko-Kopec)
bk015
r1bqkb1r/4npp1/p1p4p/1p1pP1B1/8/1B6/PPPN1PPP/R2Q1RK1/w Nd2e4 (Bratko-Kopec)
bk016
r2q1rk1/1ppnbppp/p2p1nb1/3Pp3/2P1P1P1/2N2N1P/PPB1QP2/R1B2RK1/b Ph7h5
(Bratko-Kopec) bk017
r1bq1rk1/pp2ppbp/2np2p1/2n5/P3PP2/N1P2N2/1PB3PP/R1B1QRK1/b Nc5b3 (Bratko-Kopec)
bk018
3rr3/2pq2pk/p2p1pnp/8/2QBPP2/1P6/P5PP/4RRK1/b Re8xPe4 (Bratko-Kopec) bk019
r4k2/pb2bp1r/1p1qp2p/3pNp2/3P1P2/2N3P1/PPP1Q2P/2KRR3/w Pg3g4 (Bratko-Kopec)
bk020
3rn2k/ppb2rpp/2ppqp2/5N2/2P1P3/1P5Q/PB3PPP/3RR1K1/w Nf5h6 (Bratko-Kopec) bk021
2r2rk1/1bqnbpp1/1p1ppn1p/pP6/N1P1P3/P2B1N1P/1B2QPP1/R2R2K1/b Bb7xPe4
(Bratko-Kopec) bk022
r1bqk2r/pp2bppp/2p5/3pP3/P2Q1P2/2N1B3/1PP3PP/R4RK1/b Pf7f6 (Bratko-Kopec) bk023
r2qnrnk/p2b2b1/1p1p2pp/2pPpp2/1PP1P3/PRNBB3/3QNPPP/5RK1/w Pf2f4 (Bratko-Kopec)
bk024


begin examples from (Levy)
r5k1/pppq3p/3bpr2/3p1pN1/8/2P1P1P1/PP3PP1/R2Q1RK1/w Ra1c1 (Levy) (p34. Lawson
used this to nearly beat DeepThought. The game continued ...Rg6, 2. Nf3 b5?
[correct was 2. ...c6])
r1bqkbnr/pp1p1ppp/2n1p3/8/3NP3/8/PPP2PPP/RNBQKB1R/w Nd4xNc6? (Levy) (is wrong,
almost any other move is sensible)
8/8/2pp3k/8/1P1P3K/8/8/8/w Pd4d5 (Levy) levy1
8/ppp5/8/PPP3kp/8/6KP/8/8/w Pb5b6 (Levy) Peasent 8 plys Cray Blitz 14 plys levy2
8/p7/1p1k1p2/1P2pp1p/1P1P3P/4KPP1/8/8/w Pg3g4 (Levy) at 13 plys +500 levy3
8/pp5p/8/PP2k3/2P2pp1/3K4/6PP/8/w Pc4c5 (Levy) cray 11 plys levy4
6k1/7p/5P1K/8/8/8/7P/8/w Kh6h5 (Levy) mate in 19 levy5
8/8/3pkp2/8/8/3PK3/5P2/8/w Ke3e4 (Levy) cray at 21 plys levy6
8/8/2ppk3/8/2PPK3/2P5/8/8/w Pd4d5+ (Levy) Cray Blitz at 19 plys levy7
8/2p5/3k4/1p1p1K2/8/1P1P4/2P5/8/w Pb3b4 (Levy) Cray Blitz at 18 plys levy8
8/k7/3p4/p2P1p2/P2P1P2/8/8/K7/w Ka1b1 (Levy) Cray Blitz at 18 plys sees the win
levy9
8/8/p6p/1p3kp1/1P6/P4PKP/5P2/8/w Pf3f4 (Levy) Cray Blitz at 17 plys levy10
8/2k5/p1P5/P1K5/8/8/8/8/w Kc5d5 (Levy) easy levy11
8/5p2/8/4K1P1/5Pk1/8/8/8/w Ke5e4 (Levy) Cray Blitz at 23 plys levy12
8/7p/2k1Pp2/pp1p2p1/3P2P1/4P3/P3K2P/8/w Pe3e4 (Levy) Cray Blitz at 13 plys sees
it wins a pawn levy13
8/6p1/3k1p2/2p2Pp1/2P1p1P1/1P4P1/4K3/8/w Ke2f2 (Levy) Cray Blitz at 18 plys sees
it wins a pawn levy14
4k3/4Pp2/5P2/4K3/8/8/8/8/w Ke5f4 (Levy) Cray Blitz at 17 plys, PEASENT sees it
at 11 plys levy15
8/1k3ppp/8/3K4/7P/5PP1/8/8/w Kd5d6 (Levy) Cray Blitz at 15 plys levy16


begin examples from (LevyKeene)
r1b2rk1/ppp1qppp/2n2n2/1B1p4/3P4/PQP1P3/5PPP/R1B1K1NR/w Bb5xNc6? (LevyKeene)
(Similarly BxNc6 here is positionally totally wrong; [From Stahlberg-Petrov,
Lodz 1938] almost any other move is sensible, Ne2 is probably best)
2rqr1k1/pb2bp1p/1p2p1p1/n7/B2P4/P1PQ1NP1/3B1P1P/R3R1K1/b Qd8d5 (LevyKeene)
(p.17. Browne beat DeepTHought with this xchg sac)
4n3/1b2q3/p2p4/1p1P2pk/3QP2p/2N1B2P/P5P1/6K1/w Qd4h8+ (LevyKeene) (Mephisto
played a4?)
rnbqk1nr/ppppppbp/6p1/8/8/2NP4/PPP2PPP/R1BQKBNR/b Bg7xNc3+? (LevyKeene) (is
wrong; d5 or d6 or Nf6 or most anything else is sensible)


begin examples from (stuart)
8/8/6p1/7p/7P/8/pk1K4/2R5/w Rc1a1 (stuart) # Solution : 1)Ra1! Ka1 2)Kc2! g5
3)hxg5 h4 4)g6 h3 5)g7 h2 6)g8=Q h1=Q 7)Qg7 mate.
r5k1/1p3p1p/2ppr1p1/p1b1p1q1/2P1P3/3Q1P2/PPP1N1PP/1R3R1K/w Pc2c3 (stuart) (wrong
choices: Ng3? QxN!; and f4? exf4)


begin examples from (others)
6k1/6P1/1r6/pp5P/2p5/1B5R/7K/8/w Ph5h6 (others) (Benko's Bafflers, chess life
August 1992.)
8/ppp1P1k1/1P6/1b6/1Pr5/1p1p4/P2P4/1K6/w Pb6xPa7 (others) (..bxa2+, 2.Ka1! Rc1+
3. Kxa2 Rc6 3. e8=N+! Kf7 5. Nxc7 Rc2+ 6. Kb1 and wins. Benko's Bafflers, chess
life August 1992.)
q2k1bnr/pp1b1ppp/3p4/8/2Q1P3/6P1/PPP2PB1/R3K2R/w Pe4e5 (others) (Benjamin-Zapata
St Martin 1992 rd 5 mv 15)
8/pk1r1p2/1pqPr1p1/3Rp3/2P5/8/P2Q1PPP/5RK1/w Pc4c5 (others) (Anand-Seirawan
Haninge May 1992)

M.I. Shereshevsky: Endgame strategy. 60 positions. Very hard and strategic,
Correctness far from clear compared with, say, Reinfeld, or even Speelman.

r3r1k1/1b2Pp1p/2nR4/2p1RP2/8/8/BP3PPP/1K6/w Rd6xNc6 (Shereshevsky_ES) (page 13,
M.I. Shereshevsky: Endgame strategy.)
8/1PK3pk/2PR1p2/5P1p/8/1r6/1r6/8/w Rd6d4 (Shereshevsky_ES) (page 17)
2r5/5p2/k6p/p3NP2/1p2p3/8/2PR2PP/6K1/b Pe4e3 (Shereshevsky_ES) (page 17)
r1b1r1k1/pp3p2/2p2qn1/4p1p1/4PnPp/2PBNP2/PPQ2R1P/R3N2K/b Nf4xBd3
(Shereshevsky_ES) (page 19)
1r2r3/1b1n2kp/p1p3p1/Pp3p2/3PN3/5P2/1P1R2PP/1BR3K1/w Ne4d6 (Shereshevsky_ES)
(page 20)
5rk1/3bppbp/6p1/n7/1R1NP3/6P1/2r2PBP/2B2RK1/b Bg7xNd4 (Shereshevsky_ES) (page
22)
r1r3k1/4b1pp/pp2pp2/n2p4/1N1P1B1P/2P3P1/P3PP2/1R3RK1/w Nb4d3 (Shereshevsky_ES)
(page 25)
1r6/4k3/2Bpp3/2p1b2p/2P2prP/pP1R4/P3KP2/7R/b Pd6d5 (Shereshevsky_ES) (page 26)
1r6/8/3kp3/2pP3p/B2b1prP/pP1R1K2/P4P2/7R/b Kd6xPd5 (Shereshevsky_ES) (page 26)
8/5p2/p3p1p1/1pbkP2p/5P1P/1P4P1/P3KB2/8/w Bf2e1 (Shereshevsky_ES) (page 27)
8/p5k1/2p2p2/4p1p1/1p2P3/1P4PP/1PP5/5K2/b Pg5g4 (Shereshevsky_ES) (page 30)
8/p6p/3k4/p3p3/2rBK2P/P7/3R4/8/b Kd6e6 (Shereshevsky_ES) (page 31)
8/2r5/4R3/6P1/4P1P1/2p2k2/2K5/8/b Kf3f4 (Shereshevsky_ES) (page 33)
r7/p2k3p/1pR3p1/1P1p1p2/3P1P2/4P1P1/4KP2/8/w Pf2f3 (Shereshevsky_ES) (page 36)
8/p2kr3/1p4pp/1P1p1p2/3P1PPK/2R1PP2/8/8/w Kh4g3 (Shereshevsky_ES) (page 37)
8/1p1r1p2/k1p2Rpp/P6P/2PP2P1/3K4/8/8/w Pg4g5 (Shereshevsky_ES) (page 40)
2r2k2/p4ppp/8/2p1pP2/1pR1B3/1PbPPKP1/P6P/8/w Pa2a4 (Shereshevsky_ES) (page 42)
8/8/8/4p3/4P1PK/4kP2/8/3b2N1/w Pg4g5 (Shereshevsky_ES) (page 52)
6k1/5p2/2r1p1p1/3p1n2/3P3p/1P5P/3RNPP1/6K1/b Rc6b6 (Shereshevsky_ES) (page 53)
r3kb1r/1p2pppp/1pn5/3p1b2/3P4/4PN2/PP1B1PPP/R3KB1R/b Bf5d7 (Shereshevsky_ES)
(page 56)
1R6/6k1/6pp/4p3/1P2r2P/6K1/5PP1/8/w Ph4h5 (Shereshevsky_ES) (page 62-3)
6R1/1k4P1/3K4/1p4r1/p7/P7/1P6/8/b Pb5b4 (Shereshevsky_ES) (page 66)
1r4k1/2n2ppp/2B1p3/8/RP6/4P3/5PPP/6K1/w Pg2g4 (Shereshevsky_ES) (page 71)
8/2p1r3/3p1kp1/p1p4p/P3BP1P/1Pb2KP1/2P5/3R4/w Rd1d5 (Shereshevsky_ES) (page 77)
4r3/pp4pp/2knr3/2p5/2P1p3/4N3/PPK3PP/4RR2/b Re6h6 (Shereshevsky_ES) (page 78)
1k1n3r/8/pp2p2b/3pPp2/1P1NnP2/2P1N3/P1K4R/2B5/b Pb6b5 (Shereshevsky_ES) (page
83)
1k1n1b1r/8/p7/1p1pP3/1P2nP2/2P1N3/P1K3R1/2B5/b Kb8b7 (Shereshevsky_ES) (page 83)
2r1r1k1/p2n1ppp/3bp3/2pp4/3P4/B3PP2/PP2NP1P/2R1K2R/b Pe6e5 (Shereshevsky_ES)
(page 92)
3r4/pk6/1p4pp/2p5/4n3/2P3P1/PPK1R2P/R2N1r2/b Ne4d6 (Shereshevsky_ES) (page 94)
1R6/6kp/3p2pn/3P4/2Pp1PK1/8/8/8/w Kg4g5 (Shereshevsky_ES) (page 97)
r4r2/5pk1/p2p1bp1/1p1P4/8/3B4/PPP4P/1K1R2R1/w Ph2h3 (Shereshevsky_ES) (page 98)
r2r4/1p3kp1/2pR2np/2P1p3/1P6/4P3/1B3PPP/5RK1/w Rd6d1 (Shereshevsky_ES) (page 99)
2r5/1p2kppp/p3bn2/2Rp4/1P1N4/3BPP2/1P3KPP/8/b Ke7d8 (Shereshevsky_ES) (page 112)
6k1/1pnb1ppp/p7/3p4/P2N4/1P1BP3/5PPP/6K1/w Pa4a5 (Shereshevsky_ES) (page 114)
8/1p1bk2p/p5p1/P2pp3/5P2/1P1BP1P1/3K3P/8/b Bd7b5 (Shereshevsky_ES) (page 115)
3r2k1/pp1r2pp/2n2p2/3p4/8/1P2PKP1/PB1R1P1P/3R4/w Pg3g4 (Shereshevsky_ES) (page
116)
8/p5p1/1pp1n1P1/3k1p2/P2P4/1P2BPK1/8/8/b Pa7a5 (Shereshevsky_ES) (page 118)
r4rk1/pb3ppp/1p3n2/8/4P3/1B1nBP2/P2N2PP/R4RK1/w Nd2c4 (Shereshevsky_ES) (page
130)
8/1p1nkpbp/p2p1np1/2pP4/P1P2B2/1PN4P/2B2PP1/6K1/w Pa4a5 (Shereshevsky_ES) (page
139)
8/1p1nkpbp/p2p1np1/2pP4/P1P2B2/2N4P/1P3PP1/3B2K1/w Pa4a5 (Shereshevsky_ES) (page
140)
8/3n4/pp1p1k2/P1nP1p2/1BP2P2/4K3/8/3B4/w Bb4xNc5 (Shereshevsky_ES) (page 141)
8/p3r3/B1p3kp/2Np4/4b3/2P1n1P1/PP3RP1/2K5/w Ba6b7 (Shereshevsky_ES) (page 156)
r6r/1p1k3p/p2p1bp1/3Rp3/4P1P1/1PP5/1P3P2/2B1K2R/w Pg4g5 (Shereshevsky_ES) (page
157)
3r1rk1/2n3np/p3p1p1/2pp2P1/1pP2P1P/1P2PB2/P4N2/3R1RK1/w Nf2g4 (Shereshevsky_ES)
(page 159)
7r/pBn1kp1p/4p3/6p1/1P2P3/4PP2/7P/3R2K1/w Rd1c1 (Shereshevsky_ES) (page 160)
8/8/3k2p1/pnp5/5KPP/BP6/8/8/w Ph4h5 (Shereshevsky_ES) (page 162)
5rk1/1b1nr1bp/pp1p2p1/2P2p2/2P5/P1N2NPP/1P3RPK/1B3R2/b Pb6xPc5 (Shereshevsky_ES)
(page 163)
8/1b1nk2p/p5p1/2p2p2/2P5/P1PR2PP/B5PK/4r1N1/b Re1c1 (Shereshevsky_ES) (page 163)
rnb1k2r/pp2pp1p/3p3b/5p2/3P4/2N5/PPP2PPP/1K1R1BNR/w Pg2g3 (Shereshevsky_ES)
(page 171)
2k5/rp3n2/p1p3p1/N1Pp1pp1/P2Pr1P1/4PK1P/1R3P2/6R1/w Ph3h4 (Shereshevsky_ES)
(page 175)
r3kb1r/pppn3p/5pp1/4p3/2N1P3/2P1B3/PP3PPP/R2K3R/w Pb2b4 (Shereshevsky_ES) (page
184)
2kr3r/ppp1b2p/1n4p1/N3pp2/1P2P3/P1P1B3/2K2PPP/R6R/w Be3xNb6 (Shereshevsky_ES)
(page 184)
2q2rk1/4b1pp/pn2p3/2p1P3/2P1Q3/1N4P1/P5NP/3R2K1/b Rf8d8 (Shereshevsky_ES) (page
186)
r2r2k1/p1R3pp/p1n1pp2/3B4/8/6P1/1P2PP1P/2R3K1/b Pe6xBd5 (Shereshevsky_ES) (page
187)
5k2/R5p1/1r2ppBp/p6P/1n2P1P1/1P3PK1/8/8/w Pe4e5 (Shereshevsky_ES) (page 188-9)
8/6kp/2rn2p1/8/1p4P1/1B5P/3R4/6K1/b Nd6e4 (Shereshevsky_ES) (page 191-2)
8/7R/5kp1/2n5/1p4P1/1B5P/6K1/2r5/w Bb3f7 (Shereshevsky_ES) (page 192)
2r2rk1/pp2n1b1/3p1npp/3Ppp2/N3P3/4BP2/PP3NPP/R3K2R/w Na4c3 (Shereshevsky_ES)
(page 194)
2R5/8/1p4kp/p1b2pp1/P1B3P1/1P2PK1P/3r1P2/8/w Bc4e6 (Shereshevsky_ES) (page 203)
4k3/3npp1p/b2p2p1/3P4/P1p1B3/2N3PP/4PP2/6K1/w Pf2f4 (Shereshevsky_ES) (page 209;
this is the last position I've taken from M.I. Shereshevsky: Endgame strategy.)


This file contains Endgame test positions from these sources
Jon S. Speelman: Endgame Preparation, Batsford, 1981,
Jon S. Speelman: Analysing The Endgame, Batsford 1981.
I.A. Horowitz: How to win in the chess endings,
Tartan books, David McKay co inc. New York 1957.
Y. Averbakh: Chess endings, essential knowledge, Pergamon 1987.

At the end there are also a few easy problems I cooked up just to test
whether the testee knows about underpromotion and certain standard
wins and draws.

The present file is a good test for the computer since a lot of them
involve stalemate, perpetual check, draw by repetition, and "fortess
building" draw themes, i.e. things it is hard for a computer to get
right, or where it is easy to have a bug.  Also, theories of
"corresponding squares" or "coordinate squares" are really just
special cases of dynamic programming -- such positions ought to be
readily solvable with transposition tables but harder to solve without
them.  A terrific torture test for a chess program is the mate in 200
problem; if a program can solve it, it must be doing something right!
Be warned though: although I think there is usually a unique best move
in each position, this is not as certain as in the Reinfeld and Larsen
sets. Also, problem correctness is not as certain either.  On the
bright side, I mention that in D. Hooper's: Pocket guide to endings,
are about 300 positions, all completely analysed, and of these 300,
only 35 have >=7 men on the board. Thus nearly 90% of all "endgame
knowledge" concerns positions with <=6 men (and all such positions are
databasable?).



begin examples from (Speelman_EP)
6R1/8/8/8/1k1K4/8/1p4p1/8/w Kd4d5 (Speelman_EP) (draws. EP page 14, 4)
8/8/2p5/K1P1p3/4Pk2/8/3pB3/8/w Ka5b6 (Speelman_EP) (page 14, 5)
4k3/8/2pK4/2Pp1b2/7R/7p/8/8/w Rh4h5 (Speelman_EP) (page 15, 7)
8/4k2N/7p/8/1p6/8/4K3/8/w Ke2d3 (Speelman_EP) (page 15, 9)
8/8/B3P3/3k4/5K2/2P4b/8/8/w Ba6c8 (Speelman_EP) (page 16, 11)
6b1/2p5/2p1P3/p1P4p/k5B1/3r4/1P4K1/5R2/w Rf1f4+ (Speelman_EP) (page 17, 14)
8/3p4/P3p1N1/8/6k1/1b6/8/6K1/w Ng6e7 (Speelman_EP) (page 19,17)
8/7n/1p1p1n2/p1pPpBp1/P1P1Pp1k/2P2P2/3BKP2/8/b Pg5g4 (Speelman_EP) (page 20, 19)
2KB4/1P6/2k5/8/8/8/7b/8/w Bd8h4 (Speelman_EP) (page 20, 21)
1r6/4P1P1/8/7k/8/7N/8/4K3/w Nh3f4+ (Speelman_EP) (22 page 21)
8/1p6/p1pPk1p1/3p2K1/PP1Pp2P/4P3/8/8/b Pa6a5 (Speelman_EP) (25 page 22)
8/8/p3k1p1/1p2p2p/1P2K1PP/5P2/P7/8/b Pg6g5 (Speelman_EP) (26 page 23)
8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8/b Pg6g5 (Speelman_EP) (27 page 23)
6r1/4k3/1p2p3/p1rp1p1p/P2RpP2/1KP1R1PP/1P6/8/b Ph5h4 (Speelman_EP) (28 page 23)
8/5pk1/p3p3/3n2p1/r6p/3N2PP/PR1KPP2/8/b Pg5g4 (Speelman_EP) (page 23, 29)
2b5/1r6/2kBp1p1/p2pP1P1/2pP4/1pP3K1/1R3P2/8/b Rb7b4 (Speelman_EP) (page 24, 30)
3k4/7p/8/2P5/K7/8/8/8/w Ka4b5 (Speelman_EP) (page 27, 39)
8/6K1/8/ppp2k2/8/1P6/1P5P/8/w Ph2h4 (Speelman_EP) (1... Kg4 2. Kg6! draws, and
makes black sweat too page 27,40)
8/4p2p/8/1K1k4/P7/5P2/8/8/b Kd5e6 (Speelman_EP) (41 page 27, corrected by Elie
Ebvic)
8/1pPK3b/8/8/8/5k2/8/8/w Kd7c8 (Speelman_EP) (42 page 28)
6k1/8/7Q/7K/2q3PP/8/8/8/b Qc4f7+ (Speelman_EP) (page 29, 43; stalemate or perp
chck is forced)
8/kp6/p7/P4Qp1/7p/4q3/8/7K/w Qf5f2 (Speelman_EP) (forcing stalemate; 44 page 29)
8/8/2p5/pkp3R1/7B/P7/2p3K1/8/w Pa3a4+ (Speelman_EP) (45 page 29)
8/2B2p1p/8/3K4/6k1/8/7P/8/b Pf7f5 (Speelman_EP) (47 page 30)
8/6pp/5p2/3k1PP1/5K1P/8/8/8/w Kf4g4 (Speelman_EP) (52 page 32)
3k4/p1p5/8/2p1p3/4P3/PpPP2K1/1P6/8/b Pc5c4 (Speelman_EP) (53 page 32; a
"self-stalemate" saves the game!)
8/4p3/8/3P3p/P2pK3/6P1/7b/3k4/w Pd5d6 (Speelman_EP) (page 33, 54 leads to
stalemate)
8/6P1/8/8/q2Q4/2K5/8/7k/b Qa4a1+ (Speelman_EP) (getting perpetual check, page
35, 60)
8/R5pp/2p1k3/2p2p2/2P5/1P2P1P1/P3r2P/6K1/b Pg7g5 (Speelman_EP) (getting
perpetual check, page 35, 61)
6k1/8/4K3/1R5p/8/2N5/n2q3B/8/w Nc3e4 (Speelman_EP) (forcing both sides to draw
by repetition p37, 66.)
1R6/8/8/5bp1/4p2k/8/B1p2PKP/8/w Rb8b1 (Speelman_EP) (an example of "building a
fortress" to get a draw, p38, 72)
5B1k/7p/6P1/4NnP1/8/8/K4p2/8/w Pg6g7+ (Speelman_EP) (forcing a peculiar draw,
page 39, 73)
8/6kp/6p1/1B3p2/5P2/3K2P1/4n2P/8/b Ne2xPf4+ (Speelman_EP) (forcing a B and wrong
RP draw p39, 74)
8/5ppp/8/8/1pK5/kP3P2/6PP/8/b Ph7h6 (Speelman_EP) (forcing eventual zugzwang
page 44, 82)
8/8/7b/P1k5/3N4/8/5PKp/8/w Kg2h1 (Speelman_EP) (page 47, 89, forcing a zugwang
and winning)
k7/8/3p4/p2P1p2/P2P1P2/K7/8/8/w Ka3b2 (Speelman_EP) (102 page 54, lasker)
8/k7/3p4/p2P1p2/P2P1P2/8/8/K7/w Ka1b1 (Speelman_EP) (102 page 54, reichhelm)
k7/1p5p/7P/8/1P6/8/2K5/8/w Kc2d3 (Speelman_EP) (107 page 58)

k7/7p/3p1p1P/3P2p1/3P2P1/8/6P1/K7/b Ka8b7 (Speelman_EP) (page 60, 109. This
draws. "Coordinate squares")
7k/1p6/1P2p3/1P2P3/4P1p1/6P1/8/K7/w Ka1a2 (Speelman_EP) (wins, page 60, 110,
"coordinate squares")
7k/1p6/1P2p3/1P2P3/4P1p1/6P1/8/K7/b Kh8g8 (Speelman_EP) (draws, page 60, 110,
"coordinate squares")
6k1/3p4/3p4/3P4/4P1p1/6P1/8/K7/w Ka1b1 (Speelman_EP) (wins, page 61,111
"corresponding squares")
8/8/6k1/B5Pp/6pK/6P1/8/n7/w Ba5e1 (Speelman_EP) (holds the draw, page 63,117
"corresponding squares")
2k5/1pP1p2p/1K2p2P/3bP3/8/8/2N5/8/w Nc2a3 (Speelman_EP) (page 64,119. White
wins, "corresponding squares")
2b5/1p6/pPp2k2/P1PpN2p/3P1K1P/8/8/8/w Kf4f3 (Speelman_EP) (120 page 65)
8/5b2/p2k4/1p1p1p1p/1P1K1P1P/2P1PB2/8/8/w Bf3e2 (Speelman_EP) (page 65, 121.
White wins, "corresponding squares")
6n1/p1BN3b/p1p3np/p1p3pq/6kr/K1P2r1p/2PPQ3/8/w Qe2e6+ (Speelman_EP) (EP page 68,
126. In this incredible problem by W. Joergensen, white mates in 200 and all his
moves are unique! It ought to be possible to solve it by computer if forcing
lines are investigated deeply and transposition tables are used...? The only
captures in the solution are 60. KxPa3, 141. QxPc4+, and 180. KxPa3. It ends
200. Qe2 mate.)
6k1/5p2/6p1/1P1R3p/5P2/8/5KPP/1r6/w Kf2e3 (Speelman_EP) (page 79, 138)
8/6p1/5k2/8/5KP1/8/7P/8/w Kf4f3 (Speelman_EP) (page 81, 141)
1r4k1/5p1p/6p1/2R5/8/4P1P1/5P1P/6K1/b Ph7h5 (Speelman_EP) (page 84, 146)
5k2/6p1/7p/4PK1P/5PPb/1B6/8/8/w Pg4g5 (Speelman_EP) (page 88, 152)
2R5/4ppk1/p6p/8/8/8/P2b2KP/8/w Pa2a3 (Speelman_EP) (page 92, 157)
2k5/2b5/pp6/4p3/1P4P1/1KP2p2/1P1R4/8/w Rd2d5 (Speelman_EP) (page 92, 158)
8/8/p1p5/P7/1PP3p1/4kb1p/7R/6K1/w Pb4b5 (Speelman_EP) (page 93, 159)
8/1B6/3r2p1/5p1p/5P1P/4k1P1/8/6K1/b Pg6g5 (Speelman_EP) (page 95, 162)
B7/8/1r4p1/5p1p/3k1P1P/6P1/5K2/8/b Rb6b2+ (Speelman_EP) (page 96, 164)
4Q3/5K2/8/7N/6k1/8/8/7q/w Qe8g8+ (Speelman_EP) (page 108,179)
5k2/p1p3p1/1p2p3/8/7P/5PP1/P4P2/6K1/b Pe6e5 (Speelman_EP) (page 114, 186)
8/p1pk1ppp/2p5/2K5/8/8/PPP2PPP/8/w Pb2b4 (Speelman_EP) (page 114, 187)
4r3/2p5/7R/3k4/2p2PP1/5K2/8/8/w Rh6h7 (Speelman_EP) (page 116, 191)
8/5kpp/p4p2/1p6/2rP1P2/P3K1P1/1R5P/8/b Kf7e6 (Speelman_EP) (page 116, 192)
6k1/5p2/2r1p1p1/3p1n2/3P3p/1P5P/3RNPP1/6K1/b Rc6b6 (Speelman_EP) (page 122, 203)
6k1/5p2/2n1p1p1/3p4/3P4/1P1R2PP/5K2/2rN4/b Rc1b1 (Speelman_EP) (page 123, 204)
R7/2r2pkp/2pb2p1/3p4/3P4/3NPPP1/7P/6K1/b Pg6g5 (Speelman_EP) (page 124, 205;
makes h2 weak)
8/N5pp/8/3k4/3pnP2/6P1/P6P/6K1/b Pd4d3 (Speelman_EP) (page 129, 211)
8/8/8/8/5k2/2pP4/2P5/4K3/b Kf4f3 (Speelman_EP) (page 130, 215. draws)
6k1/4n1pp/8/3p1n1N/p1pP4/PpP2P2/1B3KPP/8/w Nh5f4 (Speelman_EP) (page 131, 216)
5bk1/7p/3p4/2pPp2P/2P1N1P1/8/5K2/8/w Pg4g5 (Speelman_EP) (page 132, 219)
8/8/8/6p1/1K3p1p/5P1P/1k4P1/8/w Kb4c4 (Speelman_EP) (page 134, 223)
8/5pkp/1n4p1/1P6/3K2P1/2N4P/8/8/w Nc3d5 (Speelman_EP) (page 134, 224)
8/p5k1/6pp/1p1PP3/7P/8/P6K/8/w Ph4h5 (Speelman_EP) (page 141, 233)
8/5kp1/p2r4/8/4P3/3PK3/8/R7/w Ra1a5 (Speelman_EP) (page 142, 235)
8/5k2/5p2/2P3p1/1P4R1/4K3/7r/8/w Pc5c6 (Speelman_EP) (page 142, 236)
2b5/p6p/2B3p1/2P1k3/1P1pp3/8/P4KPP/8/b Bc8g4 (Speelman_EP) (page 143, 237)
8/KPb5/P7/1k6/6p1/5p2/5B2/8/w Pb7b8=Q+ (Speelman_EP) (page 143, 238)
8/p3k2p/1p2p1p1/bP6/P1K5/2N1P3/2R2PPP/7r/w Nc3e4 (Speelman_EP) (page 144, 240)
8/p3k1K1/1p1p1p2/5P2/P3r3/1P4P1/2P4P/3B4/w Ph2h4 (Speelman_EP) (page 145, 243)
rr4k1/6p1/b3p2p/2RpNp2/p2P4/Pp2PP2/1P4PP/2R3K1/w Kg1f2 (Speelman_EP) (page 146,
244)
4r3/5pk1/p4p1p/p3rP2/8/2PRp2P/PPK1R1P1/8/w Pg2g3 (Speelman_EP) (page 147, 246)
3k4/5p2/p4K2/p1r1n2p/B1P1p3/P3P3/5P2/7R/w Ba4d1 (Speelman_EP) (page 148, 248)
5k2/p1p4R/1pr5/3p1pP1/P2P1P2/2P2K2/8/8/w Kf3g3 (Speelman_EP) (page 149, 252)
4k3/5pK1/4pP2/3pPb2/5N2/2P5/8/8/w Kg7g8 (Speelman_EP) (page 151, 255)
8/p6p/2k1b3/2P3K1/P3N1p1/8/7P/8/b Pa7a5 (Speelman_EP) (page 153, 259)
8/2Bn4/1p2ppk1/p1p4p/P1P1P2K/1P3P2/6P1/8/w Pg2g3 (Speelman_EP) (page 154, 261)
8/p4k2/1p2pp2/6p1/1P4P1/P5N1/3n1PP1/6K1/b Pb6b5 (Speelman_EP) (page 155, 262)
8/6pk/4KnNp/7P/5PP1/8/8/8/w Ke6f7 (Speelman_EP) (page 155, 263)
8/8/8/2p1p3/1pPkPp2/pP3P2/P1BK4/5b2/b Bf1xPc4 (Speelman_EP) (page 157, 267)
4b3/6k1/1p1pP3/p2P3p/6p1/1P4K1/P1B4P/8/w Bc2d3 (Speelman_EP) (page 158, 268)
b7/P4k2/P5p1/2B2pKp/7P/5PP1/8/8/w Pf3f4 (Speelman_EP) (page 159, 269)
8/r7/P3p1k1/8/8/R7/6PK/8/w Ra3a5 (Speelman_EP) (page 161, 273)
2kr4/1p6/p1p1np2/P3p1p1/1PP1P2p/5P2/2R1NKPP/8/b Rd8d3 (Speelman_EP) (277 page
163)
1r4k1/2R3bp/2P3p1/8/4p1P1/6P1/1B3P2/6K1/b Bg7xBb2 (Speelman_EP) (281 page 166;
the last position I've taken from EP.)

begin examples from Speelman_ATE

8/5k1p/8/5K2/5P1P/8/8/8/w Kf5e5 (Speelman_ATE) (ATE page 11, 4)
8/5k1p/8/5K2/5P1P/8/8/8/b Kf7e7 (Speelman_ATE) (ATE page 11, 4)
8/7p/4k1p1/8/5P2/5K1P/5P2/8/w Kf3g4 (Speelman_ATE) (ATE page 15, 10. Wins.)
8/1p2k2p/8/P4K2/8/7P/8/8/w Kf5g5 (Speelman_ATE) (page 18, 15)
4k3/7R/4K3/4P3/8/8/8/4r3/b Ke8f8 (Speelman_ATE) (page 19,16)
4R3/2k5/4K3/4P3/8/8/8/4r3/b Re1h1 (Speelman_ATE) (page 20,17)
4R3/2k5/4K3/4P3/8/8/8/4r3/w Ke6f7 (Speelman_ATE) (page 20,17, but not same
mover)
1r6/R3K1k1/4P3/8/8/8/8/8/w Ke7d6+ (Speelman_ATE) (page 21,19)
4k3/7R/8/4PK2/8/8/8/3r4/w Kf5e6 (Speelman_ATE) (page 22, 20)
7r/4k3/8/8/2P5/2K5/8/3R4/w Kc3b4 (Speelman_ATE) (page 24, 21)
7r/4k3/8/8/2P5/2K5/8/3R4/b Rh8d8 (Speelman_ATE) (page 24, 21, other side moves)
8/8/8/8/1P3k2/7r/1K6/4R3/w Kb2c2 (Speelman_ATE) (page 27,25)
8/8/8/8/1P3k2/7r/1K6/4R3/b Kf4f5 (Speelman_ATE) (page 27,25, other side moves)
r7/P3K3/8/8/1k6/8/8/R7/b Kb4c5 (Speelman_ATE) (page 30, 29)
8/8/7K/4k2P/P7/3R4/r7/8/w Rd3f3 (Speelman_ATE) (ATE page 31, 31. Continues
...Rxa4, 2. Kg5!)
8/2k1b3/2P5/3K1P1B/8/8/8/8/w Kd5e6 (Speelman_ATE) (page 32, 33)
n6k/8/8/6P1/3K4/3B4/8/8/w Kd4c5 (Speelman_ATE) (page 43,53)
7k/6nP/6PK/8/6B1/8/8/8/w Kh6g5 (Speelman_ATE) (page 44,57)
8/8/6p1/6K1/R3k2P/8/p7/r7/b Ke4d5 (Speelman_ATE) (page 50,65)
8/5K2/8/4pk2/4R3/8/8/8/w Re4e2 (Speelman_ATE) (page 52, 68)
6R1/8/7k/5p2/6p1/4K2p/8/8/w Ke3e2 (Speelman_ATE) (page 53,69)
8/3B1p1p/6p1/4k3/8/4K1PP/8/8/w Pg3g4 (Speelman_ATE) (ATE page 59, 79. The only
win.)
7N/2K5/8/8/7p/2k5/8/8/w Nh8f7 (Speelman_ATE) (page 61,83. draws)
8/2R5/3K4/4P3/2p1p1p1/2r5/8/6k1/w Pe5e6 (Speelman_ATE) (ATE page 62, 86. draws.)
3k4/3p3p/3p4/PK6/4P3/8/8/8/w Kb5b6 (Speelman_ATE) (page 65, 94)
8/7K/8/3p4/7B/4p2N/8/1k6/w Nh3f4 (Speelman_ATE) (page 66, 95)
8/2P5/1P6/8/K3n3/6kb/8/8/w Pb6b7 (Speelman_ATE) (page 66,96 forces a draw
...Nc5+ 2. Kb5 Nxb7 3. c8=N Bxc8 4. Kb6 Nd7 5. Kc7 etc)
8/1nP5/8/1K6/8/6kb/8/8/w Pc7c8=N (Speelman_ATE) (same as above some moves later)
4k1K1/6P1/8/8/8/8/7r/5R2/w Rf1f4 (Speelman_ATE) (page 72, 103. Lucena posn,
white wins.)
1r6/R7/5p1k/5Qp1/4n1B1/4P2P/2q2PP1/6K1/b Rb8b1+ (Speelman_ATE) (page 72, 102,
stalemate combo)
8/6p1/4p2p/8/3k4/7P/2PK2P1/8/b Ph6h5 (Speelman_ATE) (page 92,136)
3K2k1/3R3p/5r1p/5P1P/6P1/8/8/8/b Kg8h8 (Speelman_ATE) (page 102,148)
B3k3/8/1PP5/n2b3p/1n4P1/4K3/8/8/w Pc6c7 (Speelman_ATE) (page 67,97. The last
position I've taken from ATE.)

begin examples from (Horowitz)
8/2k1p3/4P3/2KP4/8/8/8/8/w Pd5d6+ (Horowitz) page 61, horowitz
8/8/2k3pp/8/pK3PP1/8/1P6/8/b Kc6d5 (Horowitz) page 66
8/8/4kp2/5p1p/8/3KP1P1/7P/8/b Ke6e5 (Horowitz) (2. Ke2 Ke4 3. Kf2 h4! 4. gxh4 f4
and draw since the doubled rook pawns are useless page 69)
8/8/8/1p6/1Pp5/2K3Pk/7P/8/w Kc3d4 (Horowitz) (this is supposed to be mate in 22.
page 71)
7N/2K5/8/8/7p/2k5/8/8/w Nh8f7 (Horowitz) (..h3 2. Ng5 h2 Ne4+ leading to a draw
page 80)
4n3/8/8/8/8/8/p7/k2K4/w Kd1c2 (Horowitz) (page 87 the only draw. A question of
parity.)
8/5p2/4p3/4P1k1/K5P1/8/5N2/8/w Ka4b4 (Horowitz) (page 91. this wins.)
8/8/8/8/3KNk1p/7P/8/8/w Kd4d5 (Horowitz) (page 92. white wins. 1...Kf5 2. Nc3!!
Kf4 3. Ne2+ Kf3 4. Ng1+!! Kg2 5. Ke4 KxNg7 6. Kf3!!!)
5K2/8/p7/1k6/8/8/1P1N4/8/w Nd2b3 (Horowitz) (page 93)
8/Bpk5/8/P2K4/8/8/8/8/w Kd5d4 (Horowitz) (page 100)
8/8/1k6/1p1K4/1P6/6B1/P7/8/w Bg3e1 (Horowitz) (page 102)
5K2/k7/4P1p1/8/8/8/4b3/8/w Kf8e7 (Horowitz) (draws) page 106
2KB4/1P6/2k5/8/8/8/7b/8/w Bd8h4 (Horowitz) page 111 wins
8/p1K2p2/8/3p4/2k5/6P1/8/2B5/b Pd5d4 (Horowitz) page 113 wins
2b1k3/p1P5/3K4/8/1P6/8/P7/8/w Kd6c6 (Horowitz) (page 115. wins)
1k6/8/1P6/3B1p2/3K1Pb1/8/8/8/w Kd4e5 (Horowitz) (page 116)
5K2/R7/8/4p3/8/p5p1/1k4P1/8/w Kf8e7 (Horowitz) (page 141)
8/6KQ/8/8/8/2p5/8/k7/w Qh7h3 (Horowitz) (page 176)
3k4/pp6/2pK2p1/3p3p/8/2P4P/PP4P1/8/w Pb2b4 (Horowitz) (followed by a4 and b5,
allegedly the only win according to many pages of analysis by Max Euwe on an
ending that came up in practice, page 191.)
4k3/8/r3P3/5K2/8/8/8/1R6/b Ra6a2 (Horowitz) (no comment)
r3k3/8/8/4PK2/8/8/8/1R6/w Kf5f6 (Horowitz) (last position I've taken from
Horowitz)


begin examples from (Averbakh)
8/5K1k/8/5N2/8/3p4/3N4/8/w Nd2e4 (Averbakh) (9 page 6, mate in 4)
8/8/8/8/N7/P7/2k5/7K/w Na4b2 (Averbakh) (57 page 33)
B7/8/K7/2k5/8/2P5/8/8/w Ba8d5 (Averbakh) (58 page 33)
8/1K6/P7/kn6/4N3/8/8/8/w Ne4c5 (Averbakh) (65 page 36)
8/8/8/1p2bk1p/7P/4KP2/8/4B3/b Be5f6 (Averbakh) (122 page 75)
8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8/b Pg6g5 (Averbakh) (128 page 79)
8/8/2k3p1/5p2/2KP3p/2N1bP1P/6P1/8/w Nc3d5 (Averbakh) (130 page 81)
8/2kb4/p1p2pp1/2Pp4/3N1PP1/1P4K1/P7/8/w Pg4g5 (Averbakh) (132 page 83)
8/5pk1/r5pp/P7/3R3P/6P1/5PK1/8/w Rd4a4 (Averbakh) (133 page 84)
3r4/7p/Rp4k1/5p2/4p3/2P5/PP3P1P/5K2/b Rd8d2 (Averbakh) (138 p 89)
8/5kpp/p4p2/1p6/2rP1P2/P3K1P1/1R5P/8/b Kf7e6 (Averbakh) (140 page 90)
6k1/6p1/7p/3q4/1P3Q2/7P/6PK/8/w Qf4b8+ (Averbakh) (143 page 93)
8/5p1k/2pQ2p1/2P2q2/1P5p/5P1P/6PK/8/w Pb4b5 (Averbakh) (144 page 94)


begin examples from (WDS exercises)
K7/P2k4/8/8/8/8/8/7N/b Kd7c8 (WDS exercises) (forces a draw, Kc7 loses)
K7/P2k4/8/8/8/8/8/6N1/b Kd7c7 (WDS exercises) (forces a draw, Kc8 loses)
8/3q1P1k/1r6/8/8/8/K7/B7/w Pf7f8=N+ (WDS exercises)
8/5P1k/8/7K/8/8/8/8/w Pf7f8=R (WDS exercises)
4B1nk/5P2/6K1/8/8/8/8/8/w Pf7f8=B (WDS exercises) (Bob Holt; KBBvKN is a win,
say databases)
8/2P1P1P1/3PkP2/8/4K3/8/8/8/w Pe7e8=B (WDS exercises) (and mate in 3: 1... Kxf6
(or d6, sym.), 2. g8=R! Ke6, 3. Rg6 mate. Other moves mate slower, or lead to
stalemate. This is not a suitable test if your computer does not seek fastest
mates.)
8/1p6/p3k1pp/4P3/4PK1P/P7/1P6/8/b Pb7b5 (WDS exercises)
7K/2p5/4p3/2p2kPP/8/4P3/2b5/4n3/w Pg5g6 (WDS exercises)

• Re: New Test Suites .....you might want to look at this Andrew Dados 03:58:13 02/22/01
  • Re: New Test Suites .....you might want to look at this Joshua Lee 06:10:15 02/22/01

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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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