Author: Dieter Buerssner
Date: 07:44:36 10/22/03
Go up one level in this thread
On October 22, 2003 at 06:33:41, Vladimir Medvedev wrote: >I am not sure all these tasks has unique solution (at least two of them are >incorrect, but I can't remember their numbers :( I included a few comments. Most positions have alternative solutions, that yield in longer mater. >Now much can your engine solve at 1 sec/position? >With/without null-move? Only tried with null move. After few corrections Yace found in 87 in 1s, 98 in 5 s, 92 needed 8 s and 71 10 s. It found allways the indicated mate length, but perhaps not always at the time the solution was found. >[D] 6b1/4Kpk1/5r2/8/3B2P1/7R/8/8 w - - bm Rh6; id "Loyd-095; #5"; Mine does not find a mate after Rh6. Is the position correct? Bxf6+ is mate in 7 or better. >rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - bm Nd8; id "Loyd-074, #4"; I guess this one is too hard :-) Obviously pasted a wrong pos. >8/8/8/8/7k/8/PPPPPPPP/RNBQKBNR w KQ - - bm d4; id "Loyd-070, #3"; One dash too much. >[D] 8/1p4p1/1R2r3/4p2B/PPkB3P/RN1bp3/2p1p3/2N1K2Q w - - bm Qe4; id "Loyd-058, #3"; Na5+ is a mate in 2. Qe4 seems to be mate in 5 only. >8/PP3k2/5P2/5K2/8/8/8/8 w - - bm Pa8b; id "Loyd-041"; Better use bm a8=B. Some other minor issues with correct SAN notation (missing checking sign). Regards, Dieter PS. A nice feature for this forum would be, to allow pasting text without automatic word wrap. Typically, one has to do minor editing, when taking epd positions from here. For convenience, the corrected suite, with one position deleted. 8/8/7p/5K1k/8/6p1/5bPP/4N3 w - - bm Nf3; id "Loyd-100, #6"; 8/6R1/7p/5K1k/8/6p1/5bP1/8 w - - bm Rb7; id "Loyd-099, #5"; 8/6R1/7p/5K1k/8/6p1/5bPP/8 w - - bm hxg3; id "Loyd-098, #4"; 8/6R1/7p/5K1k/8/6p1/5bPP/4N3 w - - bm Rxg3; id "Loyd-097, #3"; b7/8/7B/7p/8/2p3r1/2P1P1pp/4K1kq w - - bm Bc1; id "Loyd-096; #5"; 6b1/4Kpk1/5r2/8/3B2P1/7R/8/8 w - - bm Bxf6+; id "Loyd-095; #7"; n1rb4/1p3p1p/1p6/1R5K/8/p3p1PN/1PP1R3/N6k w - - bm b4; id "Loyd-094; #5"; 8/8/8/p7/8/8/R6p/2K2Rbk w - - bm Raf2; id "Loyd-093, #5"; B7/b2p3p/1R1P4/7p/2k4p/2p4p/2p1P2P/2K3Q1 w - - bm Bh1; id "Loyd-092; #5"; 8/8/8/8/8/Q7/4p3/5k1K w - - bm Qf8+; id "Loyd-091; #5"; 8/4K3/4N3/8/4kP2/1P2n2P/4Q3/8 w - - bm Ke8; id "Loyd-090, #4"; 8/8/8/3p4/1N1P2Kp/Bkp5/5Q2/4N3 w - - bm Qf8; id "Loyd-089, #4"; 4Q3/4p3/4k3/8/1P2NK2/8/8/8 w - - bm Ke3; id "Loyd-088, #4"; 8/p7/8/1B6/N7/k7/2KB4/8 w - - bm Nb6; id "Loyd-087, #4"; 8/8/7K/4P2p/6bk/7p/5R1P/B7 w - - bm Rb2; id "Loyd-086, #4"; 8/8/1Kp5/2PR4/2P5/B2pp3/7P/3kNB1R w - - bm Rd8; id "Loyd-085, #4"; 8/3p4/7p/1p1Q1p1P/1P1p1B1K/2prr1p1/2PkP3/6R1 w - - bm Qa8; id "Loyd-084, #4"; K6Q/1p6/pPq4P/P2p2P1/4pP1N/7k/n5R1/1n2BB2 w - - bm Bxa6; id "Loyd-083, #4"; 8/8/2P2Q2/2p5/6B1/2Bk4/8/5K2 w - - bm Bd2; id "Loyd-082; #4"; 3b4/8/1R6/8/8/5R2/7P/4BK1k w - - bm Rff6; id "Loyd-081; #4"; 8/1p6/1Pk1p3/pRN1P1K1/p1B1P3/2P5/P7/8 w - - bm Be2; id "Loyd-080, #4"; 8/7p/8/7p/7R/4K1kp/5R2/8 w - - bm Rh2; id "Loyd-079, #4"; 2b5/2P5/pp1p4/3p3P/3Pk3/2p1p1P1/2K5/3Q1B2 w - - bm Bb5; id "Loyd-078, #4"; 4R3/2p2p2/2P2B1p/N2pPk1P/p2p1p1R/1p1P1N2/1q1P3K/8 w - - bm Ra8; id "Loyd-077,#4"; 8/8/3N4/3P1p2/2P2p1p/5k1K/3RR3/1N6 w - - bm Ne4; id "Loyd-076, #4"; 8/8/8/2Q5/5k2/4p2K/4p3/4N3 w - - bm Qb5; id "Loyd-075, #4"; 8/8/8/8/4p3/2N3R1/5p2/K2Rbk2 w - - bm Ka2; id "Loyd-073, #4"; 2b1q1nN/Q1Ppp3/4p1p1/2P1k1Bn/1R2B3/4p1r1/1b1NP2r/1K3R2 w - - bm Qa1; id "Loyd-072, #4"; n7/3p1p2/NpkNp1p1/1p2P3/3Q4/6B1/b7/4K3 w - - bm Qg1; id "Loyd-071, #4"; 8/8/8/8/7k/8/PPPPPPPP/RNBQKBNR w KQ - bm d4; id "Loyd-070, #3"; 8/8/1Q6/6N1/8/2kP4/4K3/8 w - - bm Kd1; id "Loyd-069b, #3"; 8/8/1Q6/6N1/8/2KP4/4k3/8 w - - bm Ne6; id "Loyd-069a, #3"; brnR1K2/pkP1P3/1bR5/1P6/1N1n4/1N6/P4p2/1Q3B2 w - - bm Na6; id "Loyd-068, #3"; 1K6/P3pb2/2P5/rp1k1p1R/4R3/1p2Qp2/1pq1pB2/4n3 w - - bm Re6; id "Loyd-067, #3"; 6K1/n1P2N1p/6pr/b1pp3b/n2Bp1k1/1R2R1Pp/3p1P2/2qN1B2 w - - bm Rb6; id "Loyd-066, #3"; b7/p1BR2pK/B1p5/pNk3p1/Pp4Pp/1P3n2/4R2r/7n w - - bm Bb7; id "Loyd-065, #3"; 8/1B6/8/1N6/5P2/K3k2P/Q7/8 w - - bm Nd4; id "Loyd-064, #3"; 4r1b1/1p4B1/pN2pR2/RB2k3/1P2N2p/2p3b1/n2P1p1r/5K1n w - - bm Ke2; id "Loyd-063, #3 (Steinitz Gambit)"; bKN5/B7/pPP1R1n1/Q4p2/2k5/2p3p1/3p1R2/nr1N3B w - - bm Re1; id "Loyd-062, #3"; 8/4p3/8/8/6Q1/3PK1p1/4P3/1b2k3 w - - bm Qg7; id "Loyd-061, #3"; 2N2B2/8/8/6P1/2p1P2R/2pk4/2R5/K2B1N2 w - - bm Bg4; id "Loyd-060, #3"; 3Q4/R1KP4/2P3p1/1k3r2/2p5/P7/8/8 w - - bm Qe8; id "Loyd-059, #3"; 8/1p4p1/1R2r3/4p2B/PPkB3P/RN1bp3/2p1p3/2N1K2Q w - - bm Na5+; id "Loyd-058, #2"; 8/8/8/8/3N4/8/5K1p/4R1nk w - - bm Re2; id "Loyd-057, #3"; 8/8/8/8/3N3Q/4p1n1/1K1Rp3/4k3 w - - bm Nf5; id "Loyd-056, #3"; 8/1b3P2/3p1R2/3k4/3NpB2/3pQ2B/K7/8 w - - bm Ne6; id "Loyd-055, #3"; Q7/5p2/5P1p/5PPN/6Pk/4N1Rp/7P/6K1 w - - bm Qh1; id "Loyd-054, #3"; 3n4/6n1/3p2p1/2pP1pP1/K1pk1Bp1/p1Nb4/p2R1P2/Q6R w - - bm Re1; id "Loyd-053, #3"; 8/6pK/4N1P1/1R1PP3/2PBkP2/3N2p1/6Pp/2R4Q w - - bm Rg1; id "Loyd-052, #3"; 6K1/8/7p/5p2/4k3/5N2/2PQ2R1/7n w - - bm Qc3; id "Loyd-051, #3"; 8/2p5/2p5/k1K5/8/3Q4/8/3b4 w - - bm Qg3; id "Loyd-050, #3"; 6K1/7P/8/1p4Q1/5N2/1P6/6pP/4Rbbk w - - bm h8=N; id "Loyd-049, #3"; 8/p7/1Pn5/nk1N4/4R3/2Q5/1K6/8 w - - bm Ra4; id "Loyd-048, #3"; 8/6p1/6Qp/3N1p1P/2P5/5k2/2P1p3/4K1B1 w - - bm Ba7; id "Loyd-047, #3"; 5N1k/5Ppp/8/8/2Q3p1/8/8/b6K w - - bm Qf1; id "Loyd-046, #3"; 8/1B6/1p6/k5rQ/p2N1p1n/K7/4b3/8 w - - bm Nb3+; id "Loyd-045, #3"; 8/1n5Q/7P/8/4PN2/5N2/6PP/1K4Bk w - - bm Bc5; id "Loyd-044, #3"; 8/8/1Q6/1pP5/k7/8/K7/8 w - - bm Qh6; id "Loyd-043, #3"; 8/8/3p4/6QR/4b3/7P/5K1P/6Bk w - - bm Qg8; id "Loyd-042, #3"; 8/PP3k2/5P2/5K2/8/8/8/8 w - - bm a8=B; id "Loyd-041, #3"; 8/5PkP/4K3/8/5P2/8/8/8 w - - bm f8=R; id "Loyd-040, #3"; 8/n4B2/1p5q/2PNNp1p/1bRPkp1K/rr5n/1p1P1P1B/6Qb w - - bm Qg8; id "Loyd-039, #3"; 8/1K2Q3/8/3k4/Pp1P1P2/8/1B6/8 w - - bm Qh7; id "Loyd-038, #3"; 8/8/2p5/2K2p2/5P2/4NB2/5kP1/7Q w - - bm Qh8; id "Loyd-037, #3"; 8/5N2/2k5/4p3/1B6/K2Q4/8/8 w - - bm Qh7; id "Loyd-036, #3"; 2n5/6p1/8/5p2/8/7N/3pp1B1/KQ1bk3 w - - bm Ba8; id "Loyd-035, #3"; k7/b5R1/1p3Q2/1p6/1K6/1P6/6b1/8 w - - bm Rf7; id "Loyd-034, #3"; 8/8/2Q5/4N3/6r1/8/5p1k/5Kb1 w - - bm Qh1+; id "Loyd-033, #3"; 6b1/b2nB3/4p2r/1Np1kp2/2p2N2/K1P1PP2/2B5/8 w - - bm Ba4; id "Loyd-032, #3"; 6R1/2K5/8/8/5p2/6p1/1Q3Nk1/8 w - - bm Ng4+; id "Loyd-031, #3"; 8/8/8/8/8/6P1/6k1/4KR1R w K - bm Rf4; id "Loyd-030, #3"; 8/4K3/8/1R6/3kP3/8/8/4Q3 w - - bm Rb3; id "Loyd-029, #3"; 8/8/8/2K5/6kP/4Q3/8/5B2 w - - bm Bc4; id "Loyd-028, #3"; 8/3QPk2/8/8/8/8/4K3/8 w - - bm Qd6; id "Loyd-027, #3"; 8/2p2p2/2P2B2/8/2QN1k2/5P2/3K1P1P/8 w - - bm Qe6; id "Loyd-026, #3"; r7/6p1/6pk/4Q1N1/6pK/5N2/8/1b6 w - - bm Qb8; id "Loyd-025, #3"; 8/5Pq1/2R3P1/2PP2B1/K1p1p3/N1kpN2R/3n3Q/b7 w - - bm Rh8; id "Loyd-024, #2"; 8/1n1NBP1K/5Rpn/r4B2/r4k1p/4p3/6Q1/7N w - - bm Ra6; id "Loyd-023, #2"; 6r1/6p1/4N2B/4N1R1/8/4k2K/1Q6/8 w - - bm Qa1; id "Loyd-022, #2"; 5R2/8/2p3B1/3k1N2/4R3/1K2b3/8/7Q w - - bm Qa1; id "Loyd-021, #2"; 8/8/8/8/3B1N2/4N3/3RpkPR/1K6 w - - bm Be5; id "Loyd-020, #2"; 8/8/2K5/6Q1/2B1k3/2P2b1R/3prn2/3N4 w - - bm Bb3; id "Loyd-019, #2"; 5Q2/5B1k/6r1/6p1/6N1/6K1/8/8 w - - bm Qa8; id "Loyd-018, #2"; 8/4N3/8/4p1P1/2K4p/3B1k1p/R6P/2Q5 w - - bm Bc2; id "Loyd-017, #2"; 8/8/7p/4K1kb/8/7R/7Q/8 w - - bm Qa2; id "Loyd-016, #2"; 5B2/3n4/2Ppp3/3kN1Q1/1R6/3P4/2K5/8 w - - bm Qd8; id "Loyd-015, #2"; 2R5/8/3k4/3N2p1/4K1Q1/8/8/8 w - - bm Kf5; id "Loyd-014, #2"; 8/2N5/8/k2NQ3/P1R5/Pp6/n2p4/1K1B4 w - - bm Qa1; id "Loyd-013, #2"; n6k/7b/Q4Kp1/8/8/8/8/8 w - - bm Qa1; id "Loyd-012, #2"; 1B6/3Q4/6Rn/8/4k3/1P2pq2/K7/7B w - - bm Rg2; id "Loyd-011, #2"; 8/8/8/1K3pr1/5R2/5QRp/6qp/7k w - - bm Qa8; id "Loyd-010, #2"; 8/5Q1N/2R5/4p3/p2pk3/R1p4P/5B2/4K3 w - - bm Qb7; id "Loyd-009, #2"; 8/7K/2Rn1N2/6k1/6N1/2n4p/8/4QR2 w - - bm Nf2; id "Loyd-008, #2"; 8/5N2/4p3/2K5/4k3/7R/3B2Rn/3b3Q w - - bm Rf3; id "Loyd-007, #2"; 7R/8/8/8/6pq/7k/4Np1r/5KbQ w - - bm Qa8; id "Loyd-006, #2"; 8/1pN5/1Pb5/n1q1n3/8/PpkpP2Q/1N1R4/2K5 w - - bm Qc8; id "Loyd-005, #2"; 2brrb2/p7/p7/7Q/1p1kpPp1/1P1pN1P1/3K4/8 w - - bm Qa5; id "Loyd-004, #2"; 4br1n/8/4p2Q/3p1k2/4p1N1/1B4K1/8/8 w - - bm Ba2; id "Loyd-003, #2"; 8/8/8/6Q1/4R3/2K2p2/5k2/5b2 w - - bm Re1; id "Loyd-002, #2"; 7B/2R1KnQ1/1p1PP3/3k4/2N5/r3p1N1/4n3/1q6 w - - bm Qa1; id "Loyd-001, #2";
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