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Subject: Re: Some more mating problems

Author: Tony Werten

Date: 06:57:52 08/17/00

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On August 17, 2000 at 00:24:57, Ed Schröder wrote:

>On August 16, 2000 at 21:02:43, Gian-Carlo Pascutto wrote:
>
>>
>>Try these 2 :
>>
>>From one of my own games, I played Bf5+ and lost,
>>but Bd1! forces mate.
>>
>>[D]8/pp3K1k/2p2R2/4r1p1/6B1/2P4p/PP6/8 w - -
>
>Rebel Century 3.0 (beta)
>
>00:00:03 13.00  18.12   1.Bd1 Re7+ 2.Kxe7 b6 3.Bc2 Kg8 4.Rxc6
>                        a6 5.Rg6 Kh7 6.Rxb6 Kg7 7.Rxa6 Kg8
>                        8.Rg6 Kh7 9.Rxg5 Kh6 10.Rg1  (3)
>
>00:00:03 14.00  Mate in 11 moves   1.Bd1 Re7+ 2.Kxe7 b6 3.Bc2 Kg8 4.Rxc6
>                        a6 5.Rg6 Kh7 6.Rxb6 Kg7 7.Rxa6 g4
>                        8.Rg6 Kh7 9.Kf7 g3 10.Ra6 Kh8  (3)
>

XiniX needs 3 sec to find the move, 4 to solve the mate (not bad)

8 7900 1 160 Kn/s  Rf3 Re7 Kxe7  h2 Rh3 Kg6 Rxh2  a5 Rg2  b5 Kd6
9 8043 2 187 Kn/s  Rf3 Re7 Kxe7  h2 Rh3 Kg6 Rxh2  a5 Ke6  b6 Bf5 Kg7 Rh7 Kf8
9 8245 3 194 Kn/s  Bd1 Re7 Kxe7 Kg7 Bc2  a6 Rg6 Kh7
10 99988 4 242 Kn/s  Bd1 Re7 Kxe7 Kg7 Bc2  h2 Rg6 Kh7 Kf7 h1Q Rg7 Kh6 Rh7

(ply nr,score in millipawns,secs,speed,pv )

>
>>From a Chiptest game.
>>
>>[D]3r1r1k/1b4pp/ppn1p3/4Pp1R/Pn5P/3P4/4QP2/1qB1NKR1 w - -
>
>00:00:03 12.00  0.00   1.Rxh7+ Kxh7 2.Qh5 Kg8 3.Rxg7 Kxg7
>                       4.Bh6 Kh8 5.Bg5 Kg7 6.Bh6 Kh8 7.Bg5
>                       Kg7  (3)
>
>00:00:06 13.00  Mate in 16 moves   1.Rxh7+ Kxh7 2.Qh5 Kg8 3.Rxg7 Kxg7
>                       4.Bh6 Kh8 5.Bg5 Kg8 6.Qg6 Kh8 7.Bf6
>                       Rxf6 8.exf6 Qxe1 9.Kxe1 Nc2 10.Kf1
>                       Ne3 11.fxe3 Rd7 12.Qe8 Kh7  (5)

XiniX sees a draw in 7 secs, but starts to solve the mate only at ply 15. Right
move, wrong reason.

8 0 7 145 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
9 0 7 161 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
10 0 9 169 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
11 0 13 177 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
12 0 23 194 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
13 0 45 209 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
14 0 119 213 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7
15 7182 258 205 Kn/s  Rxh7 Kxh7 Qh5 Kg8 Rxg7 Kxg7 Bh6 Kh7 Bg5 Kg8 Qg6 Kh8 Bf6
Rxf6  exf6 Qxe1 Kxe1 Nxd3 Kf1 Rd7 Qe8 Kh7 Qxd7 Ne7  fxe7 Bc8 Qxc8

>
>Athlon 600, 100 Mb hash.

PIII 450, 30 Mb hash.

Tony ( who does not like everybody saying XiniX will end last )

>
>
>>My matefinder finds neither. If you have any more nice
>>(long) mates, please share them.
>
>A few ones I like most.
>
>Ed
>
>------------------------------------------
>
>[Event "?"]
>[Site "?"]
>[Date "1996.06.05"]
>[Round "?"]
>[White "MATE (13)"]
>[Black "Night promotions"]
>[Result "1-0"]
>[WhiteElo "?"]
>[BlackElo "?"]
>[FEN "7K/2p1p1p1/2PpP1Pk/6pP/Pp4P1/8/1P1P4/8 w - - 0 1"]
>
>1. a5 d5 2. a6 d4 3. a7 d3 4. a8=N b3 5. Nb6 cxb6 6. c7 b5 7. c8=N b4 8.
>Nd6 exd6 9. e7 d5 10. e8=N d4 11. Nf6 gxf6 12. g7 f5 13. g8=N# 1-0
>
>[Event "?"]
>[Site "?"]
>[Date "1996.09.21"]
>[Round "?"]
>[White "MATE (25)"]
>[Black "quiet move 23.Kb2!"]
>[Result "1-0"]
>[WhiteElo "?"]
>[BlackElo "?"]
>[FEN "8/1p6/8/pBP4r/p3R2P/K7/3p1p1p/3k4 w - - 0 1"]
>
>1. Be2+ Ke1 2. Bg4+ Kf1 3. Bh3+ Kg1 4. Rg4+ Kh1 5. Bg2+ Kg1 6. Bxb7+ Kf1
>7. Ba6+ Ke1 8. Re4+ Kd1 9. Be2+ Ke1 10. Bb5+ Kd1 11. Bxa4+ Kc1 12. Rc4+
>Kb1 13. Bc2+ Kc1 14. Bf5+ Kd1 15. Bg4+ Ke1 16. Re4+ Kf1 17. Bh3+ Kg1 18.
>Rg4+ Kh1 19. Bg2+ Kg1 20. Bc6+ Kf1 21. Bb5+ Ke1 22. Re4+ Kd1 23. Kb2 Rxc5
>24. Ba4+ Rc2+ 25. Bxc2# 1-0
>
>[Event "?"]
>[Site "mate in 19"]
>[Date "1999.04.13"]
>[Round "?"]
>[White "Marpr (19)"]
>[Black "M19 (!!)"]
>[Result "1-0"]
>[WhiteElo "?"]
>[BlackElo "?"]
>[FEN "4r3/p1p1pPp1/P1P1P1P1/5K2/3p2P1/7p/3P1ppr/3R1nkq w - - 0 1"]
>
>1. fxe8=N d3 2. Nf6 gxf6 3. g5 fxg5 4. g7 g4 5. g8=N g3 6. Nf6 exf6 7.
>Kg6 f5 8. e7 f4 9. e8=N f3 10. Nd6 cxd6 11. c7 d5 12. c8=N d4 13. Nb6 axb6
>14. a7 b5 15. a8=N b4 16. Nc7 b3 17. Ne6 b2 18. Ng5 b1=Q 19. Nxf3# 1-0
>
>[Event "?"]
>[Site "?"]
>[Date "1996.09.21"]
>[Round "?"]
>[White "MATE (30)"]
>[Black "Ng4+"]
>[Result "1-0"]
>[WhiteElo "?"]
>[BlackElo "?"]
>[FEN "5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1"]
>
>1. Neg4+ Kf5 2. Nh6+ Ke5 3. Nf7+ Kf5 4. Nd6+ Ke5 5. Ng4+ Kd5 6. Ne3+ Ke5
>7. Nf7+ Ke4 8. Ng5+ Ke5 9. Nf3+ Ke4 10. Nxd2+ Ke5 11. Nf3+ Ke4 12. Ng5+
>Ke5 13. Nf7+ Ke4 14. Nd6+ Ke5 15. Ng4+ 1-0
>
>[Event "?"]
>[Site "?"]
>[Date "1995.10.14"]
>[Round "?"]
>[White "MATE (12)"]
>[Black "difficult"]
>[Result "1-0"]
>[WhiteElo "?"]
>[BlackElo "?"]
>[FEN "n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - 0 1"]
>
>1. Bc7 Qxc8 2. gxf7+ Kh8 3. Be5 Qc5 4. Bb2 Nc7 5. Ba1 a4 6. Bb2 a3 7. Ba1
>a2 8. Bb2 a1=Q 9. Bxa1 Qc3+ 10. Bxc3 Nd5+ 11. Ke6+ Nxc3 12. f8=Q# 1-0
>
>
>
>>--
>>GCP



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