diff --git a/README.md b/README.md index ee7cf86..32ca9a0 100644 --- a/README.md +++ b/README.md @@ -51,7 +51,7 @@ Sample output: ``` Using ./sf16 on matetrack.epd with --nodes 10000 Engine ID: Stockfish 16 -Total FENs: 6555 +Total FENs: 6554 Found mates: 524 Best mates: 355 @@ -69,7 +69,7 @@ contains illegal moves or does not end in checkmate. * `ChestUCI_23102018.epd`: The original suite derived from publicly available `ChestUCI.epd` files, see [FishCooking](https://groups.google.com/g/fishcooking/c/lh1jTS4U9LU/m/zrvoYQZUCQAJ). It contains 6561 positions, with one definite and five likely draws, some illegal positions and some positions with a sub-optimal or likely incorrect value for the fastest known mate. * **`matetrack.epd`**: The successor to `ChestUCI_23102018.epd`, with all illegal positions removed and all known errors corrected. The plots shown above are based on this file. It contains 6554 mate problems, ranging from mate in 1 (#1) to #126 for positions with between 4 and 32 pieces. In 26 positions the side to move is going to get mated. * `matetrackpv.epd`: The same as `matetrack.epd`, but for each position the file also includes a PV leading to the checkmate, if such a PV is known. -* `matedtrack.epd`: Derived from `matetrackpv.epd` by applying a best move in all those positions, where the winning side is to move, and where a best move is known. The order of the positions in `matedtrack.epd` corresponds 1:1 to the order in `matetrack.epd`. So the new test suite still contains 6554 mate problems, but for 6542 of them the side to move is going to get mated. +* `matedtrack.epd`: Derived from `matetrackpv.epd` by applying a best move in all those positions, where the winning side is to move, and where a best move is known. The order of the positions in `matedtrack.epd` corresponds 1:1 to the order in `matetrack.epd`. So the new test suite still contains 6554 mate problems, but for 6544 of them the side to move is going to get mated. * `mates2000.epd`: A smaller test suite with 2000 positions ranging from #1 to #27. It contains a random selection of positions from `matetrack.epd` and `matedtrack.epd` that Stockfish can solve with 1M nodes. In 1105 positions the side to move is going to get mated. ### Automatic creation of new test positions diff --git a/matedtrack.epd b/matedtrack.epd index 3fa251d..2cb2736 100644 --- a/matedtrack.epd +++ b/matedtrack.epd @@ -6297,8 +6297,6 @@ q1n3r1/8/rbn4p/8/1P6/P2Q1P2/1p1Np3/k3K2R b - - bm #-22; 2k5/8/1P1P4/8/7p/p1p1p2P/P1P1P2P/b2K4 b - - bm #-22; 2r1b1Q1/6p1/2P5/5P2/1p2K3/pPp5/n2P4/1B2k3 w - - bm #23; 8/p1p5/3p4/p3p3/3k1p2/1KP1b1p1/1N5p/7B b - - bm #-22; -8/p7/qb5p/p6p/p7/7p/2P1P2k/2Q2K2 w - - bm #23; -8/p7/qb5p/p7/p6p/7p/2P1P2k/2Q2K2 w - - bm #23; 1Rn4k/n1p5/pb1p1N1P/3P3p/7p/p1p1P3/P1P1PP1P/7K b - - bm #-22; Q7/6p1/8/8/1p6/3P3P/2P3pp/4K2k b - - bm #-23; 7k/6pP/6P1/P2P4/3p2p1/3P2p1/1b4Pp/7K b - - bm #-23; @@ -6417,6 +6415,7 @@ k7/rn1N1p2/n1B5/2bN1p1p/7P/4p1P1/P3P3/2K5 b - - bm #-31; 8/p1Q5/8/2p5/1p6/8/ppPp2p1/qrbK2kb b - - bm #-32; 6br/2p2pkN/2p2P2/1pP3KP/1Pp5/2p4N/2P5/8 b - - bm #-32; 2Q5/6Br/1pB2p2/k1qR1p1p/1pP2PPP/pPp1p2K/4P3/1nn1b1r1 b - - bm #-32; +8/p7/qb5p/p7/p4Q1p/7p/2P1P2k/5K2 b - - bm #-33; 8/6p1/6p1/6p1/1p2N1p1/bP4p1/5pPk/1K3B1n b - - bm #-33; 8/7Q/8/8/1k1p4/4p1p1/3prpp1/3Kbbrn b - - bm #-33; k1q4r/p7/P3P3/1N1Q4/8/n3K3/6p1/2n5 b - - bm #-33; @@ -6430,6 +6429,7 @@ nN6/2p3p1/1p3p2/7R/3B3P/7K/p1p1p1pP/k6b b - - bm #-34; 4B1Rn/1p1p1rbr/3P2kp/3P3R/1p1p2P1/1P2p3/2P1P3/3K4 b - - bm #-34; 8/8/2N1p3/p7/rp2p3/kp6/p1p1N2K/bbQ5 b - - bm #-34; k7/rn1N4/n1B4p/3N4/5p1p/b3pP2/P3P1P1/3K4 b - - bm #-34; +8/p7/qb5p/p6p/p4Q2/7p/2P1P2k/5K2 b - - bm #-35; 6q1/1p6/1r1P1rp1/4n1Q1/1P1K1Pk1/8/bP1B1Ppn/6b1 b - - bm #-35; 8/6r1/5pP1/4p3/3p3p/3R2p1/p1pBp3/4k1K1 b - - bm #-35; 8/pp3p2/8/5N2/2p1p3/2p1B3/1pp1k1NK/brrb4 b - - bm #-35; diff --git a/matetrack.epd b/matetrack.epd index 7d27a99..363056d 100644 --- a/matetrack.epd +++ b/matetrack.epd @@ -6297,8 +6297,6 @@ q1n3r1/8/rbn4p/8/1P6/PQ3P2/1p1Np3/k3K2R w - - bm #23; --:-- @ C0/R4/K4/P8/X44; 2k5/8/1P1P4/8/7p/p1p1p2P/P1P1P2P/b1K5 w - - bm #23; 2r1b1Q1/6p1/2P5/5P2/1p2K3/pPp5/n2P4/1B2k3 w - - bm #23; 8/p1p5/3p4/p3p3/3k1p2/1K2b1p1/1NP4p/7B w - - bm #23; -8/p7/qb5p/p6p/p7/7p/2P1P2k/2Q2K2 w - - bm #23; -8/p7/qb5p/p7/p6p/7p/2P1P2k/2Q2K2 w - - bm #23; R1n4k/n1p5/pb1p1N1P/3P3p/7p/p1p1P3/P1P1PP1P/7K w - - bm #23; 7Q/6p1/8/8/1p6/3P3P/2P3pp/4K2k w - - bm #24; c0 "was bm #23"; 7k/6pP/6P1/3P4/P2p2p1/3P2p1/1b4Pp/7K w - - bm #24; 00:07+; @@ -6417,6 +6415,7 @@ k7/rn1N1p2/n1B5/2bN1p1p/7P/4p1P1/P3P3/3K4 w - - bm #32; 8/p7/8/Q1p5/1p6/8/ppPp2p1/qrbK2kb w - - bm #33; 00:12 @ C2/R0/K4/P4/X6; 6br/2p2pkN/2p5/1pP2PKP/1Pp5/2p4N/2P5/8 w - - bm #33; 00:15 @ C2/R0/K2/P4/X4; 8/2P3Br/1pB2p2/k1qR1p1p/1pP2PPP/pPp1p2K/4P3/1nn1b1r1 w - - bm #33; --:-- @ C0/R2/K3/P11/X26; +8/p7/qb5p/p7/p6p/7p/2P1P2k/2Q2K2 w - - bm #34; c0 "was bm #23"; 8/6p1/6p1/2N3p1/1p4p1/bP4p1/5pPk/1K3B1n w - - bm #34; 00:00+ @ C6/R0/K2/P4/X5; 8/2Q5/8/8/1k1p4/4p1p1/3prpp1/3Kbbrn w - - bm #34; 00:01+ @ C2/R0/K0/P2/X9; k1q4r/p7/P3P3/1N6/8/nQ2K3/6p1/2n5 w - - bm #34; 00:03 @ C0/R2/K2/P4/X26; @@ -6430,6 +6429,7 @@ Q2B1r2/K4pr1/6R1/4p3/p4p1N/7k/p1p1p1p1/7b w - - bm #35; 00:00 @ C0/R2/K4/P5/X15; 4B1Rn/1p1p1rbr/3P2kp/3P3R/1p1p2P1/1P2p3/2P1P3/4K3 w - - bm #35; 00:02+ @ C4/R0/K2/P6/X8; 8/8/2N1p3/p7/rp2p3/kp6/p1pQN2K/bb6 w - - bm #35; k7/rn1N4/n1B4p/8/5p1p/b1N1pP2/P3P1P1/3K4 w - - bm #35; +8/p7/qb5p/p6p/p7/7p/2P1P2k/2Q2K2 w - - bm #36; c0 "was bm #23"; 6q1/1p6/1r1P1rpQ/4n3/1P1K1Pk1/8/bP1B1Ppn/6b1 w - - bm #36; 00:00 @ C3/R0/K4/P1/X3; 8/6r1/5pPB/4p3/3p3p/3R2p1/p1p1p3/4k1K1 w - - bm #36; 00:00 @ C2/R1/K2/P2/X8; 8/pp3p2/8/8/2p1p2N/2p1B3/1pp1k1NK/brrb4 w - - bm #36; --:-- @ C30/R0/K4/P5/X10; diff --git a/matetrackpv.epd b/matetrackpv.epd index 291e1b7..bc2e57f 100644 --- a/matetrackpv.epd +++ b/matetrackpv.epd @@ -6297,8 +6297,6 @@ q1n3r1/8/rbn4p/8/1P6/PQ3P2/1p1Np3/k3K2R w - - bm #23; PV: b3d3 a1a2 d3d5 a2a1 d5 2k5/8/1P1P4/8/7p/p1p1p2P/P1P1P2P/b1K5 w - - bm #23; PV: c1d1 a1b2 d1e1 b2c1 e1f1 c1d2 f1g2 d2e1 g2g1 e1d2 g1f1 d2c1 f1e1 c1b2 e1d1 b2a1 d1c1 a1b2 c1b1 c8d7 b6b7 d7d6 b7b8q d6e6 b8d8 e6e5 d8h4 e5d6 h4f6 d6c5 h3h4 c5b5 h4h5 b2c1 b1c1 b5c5 h5h6 c5b5 h6h7 b5c5 h7h8q c5b5 h8h5 b5a4 f6h4; 2r1b1Q1/6p1/2P5/5P2/1p2K3/pPp5/n2P4/1B2k3 w - - bm #23; 8/p1p5/3p4/p3p3/3k1p2/1K2b1p1/1NP4p/7B w - - bm #23; PV: c2c3 d4c5 b2a4 c5b5 c3c4 b5a6 b3c2 e3d4 c2d3 d4b6 d3e2 b6e3 e2f1 e3d4 h1e4 d4f2 f1g2 h2h1q g2h1 f2d4 h1g2 d4e3 g2h3 e3d2 h3g4 f4f3 e4f3 e5e4 f3e4 g3g2 e4g2 c7c6 g2c6 d2c3 g4f5 c3d2 f5e6 d2f4 c6a8 f4e5 e6d5 e5b2 d5c6 d6d5 a4c5; -8/p7/qb5p/p6p/p7/7p/2P1P2k/2Q2K2 w - - bm #23; -8/p7/qb5p/p7/p6p/7p/2P1P2k/2Q2K2 w - - bm #23; R1n4k/n1p5/pb1p1N1P/3P3p/7p/p1p1P3/P1P1PP1P/7K w - - bm #23; PV: a8b8 h4h3 h1g1 b6c5 b8b1 c8b6 g1h1 b6d7 f6d7 h8h7 d7c5 d6c5 d5d6 c7d6 b1b7 h7h6 b7a7 d6d5 a7a6 h6g5 a6a3 g5f5 a3b3 d5d4 e3d4 c5d4 h1g1 f5e6 a2a4 h5h4 a4a5 e6d7 a5a6 d4d3 e2d3 d7d6 a6a7 d6c7 a7a8q c7d7 a8a6 d7e7 b3b7 e7d8 a6a8; 7Q/6p1/8/8/1p6/3P3P/2P3pp/4K2k w - - bm #24; PV: h8a8 h1g1 a8a7 g1h1 a7b7 h1g1 b7b6 g1h1 b6c6 h1g1 c6c5 g1h1 c5d5 h1g1 d5d4 g1h1 d4e4 h1g1 e4e3 g1h1 e3f3 h1g1 e1e2 g7g6 f3g4 g1h1 g4e4 h1g1 e4d4 g1h1 d4d5 h1g1 d5c5 g1h1 c5c6 h1g1 c6b6 g1h1 b6b7 h1g1 b7a7 g1h1 a7a8 g6g5 e2f2 g5g4 a8g2; 7k/6pP/6P1/3P4/P2p2p1/3P2p1/1b4Pp/7K w - - bm #24; PV: a4a5 b2a3 a5a6 a3c5 d5d6 c5d6 a6a7 d6f8 a7a8n f8d6 a8b6 d6e5 b6c8 e5d6 c8a7 d6e7 a7b5 e7c5 b5c7 c5e7 c7e6 e7f6 e6f4 f6g5 f4e2 g5e3 e2g3 e3f4 g3e4 g4g3 e4c5 f4e5 c5e6 e5f6 e6f4 f6g5 f4e2 g5e3 e2g3 e3g5 g3e4 g5f4 g2g3 f4g3 e4g5 g3e1 g5f7; @@ -6417,6 +6415,7 @@ k7/rn1N1p2/n1B5/2bN1p1p/7P/4p1P1/P3P3/3K4 w - - bm #32; PV: d1c1 c5d4 c1b1 d4c5 8/p7/8/Q1p5/1p6/8/ppPp2p1/qrbK2kb w - - bm #33; PV: a5c7 g1f2 c7f4 f2g1 f4h4 g1f1 h4f6 f1g1 f6f4 a7a6 f4f6 g1h2 f6h4 h2g1 h4f4 a6a5 f4f6 g1h2 f6h4 h2g1 h4f4 a5a4 f4h4 g1f1 h4f6 f1g1 f6f4 a4a3 f4f6 g1h2 f6h4 h2g1 h4f4 c5c4 f4c4 g1f2 c4f4 f2g1 f4b4 g1f2 b4f4 f2g1 f4f6 g1h2 f6h4 h2g1 c2c4 g1f1 h4f6 f1g1 c4c5 g1h2 f6h4 h2g1 c5c6 g1f1 h4f6 f1g1 c6c7 g1h2 f6f2 h2h3 c7c8q h3h2 c8h8; 6br/2p2pkN/2p5/1pP2PKP/1Pp5/2p4N/2P5/8 w - - bm #33; PV: f5f6 g7h7 g5h4 h7h6 h3f2 h6h7 f2d1 h7h6 d1e3 h6h7 e3f1 h7h6 f1h2 h6h7 h2f3 h7h6 f3e5 h6h7 e5c6 h7h6 c6e5 c7c6 e5g4 h6h7 g4e3 h7h6 e3f5 h6h7 f5d6 h7h6 h4g4 h6h7 g4h3 h7h6 h3h4 h6h7 d6e4 h7h6 e4f2 h6h7 f2d1 h7h6 d1e3 h6h7 e3f1 h7h6 f1h2 h6h7 h2f3 h7h6 f3e5 h6h7 e5c6 h7h6 c6e5 h6h7 c5c6 h7h6 c6c7 h6h7 c7c8q h7h6 e5g4 h6h7 c8f5; 8/2P3Br/1pB2p2/k1qR1p1p/1pP2PPP/pPp1p2K/4P3/1nn1b1r1 w - - bm #33; PV: c7c8q h5g4 h3h2 h7h4 h2g1 c1e2 g1f1 h4h1 f1e2 h1h2 e2e1 h2h1 e1e2 h1h2 e2d1 h2h1 d1c2 h1h2 c2b1 a3a2 b1a1 h2h1 a1a2 h1h2 a2b1 h2h1 b1c2 h1h2 c2d1 c3c2 d1c1 h2h1 c1c2 h1h2 c2d1 h2h1 d1e2 h1h2 e2f1 e3e2 f1e1 h2h1 e1e2 h1h2 e2f1 h2h1 f1g2 h1g1 g2h2 g4g3 h2h3 g1h1 h3g3 h1g1 g3h2 g1h1 h2h1 c5d5 c4d5 b6b5 c8c7 a5a6 c7b7 a6a5 b7b5; +8/p7/qb5p/p7/p6p/7p/2P1P2k/2Q2K2 w - - bm #34; PV: c1f4 h2h1 f4e4 h1h2 e4e5 h2h1 e5d5 h1h2 d5d6 h2h1 d6c6 h1h2 c2c4 h2g3 c6f3 g3h2 f3f4 h2h1 f4e4 h1h2 e4e5 h2h1 e5d5 h1h2 d5d6 h2h1 d6c6 h1h2 e2e3 b6e3 c6a6 h2g3 f1e2 e3b6 c4c5 g3f4 c5b6 a7b6 e2d3 h3h2 a6a8 f4f5 a8e4 f5f6 e4h4 f6f5 h4h5 f5f4 h5h2 f4f5 h2h5 f5e6 d3e4 e6d6 h5d5 d6c7 d5e6 a4a3 e4d5 c7b7 e6d7 b7a6 d7c8 a6a7 d5c6 a3a2 c8b7; 8/6p1/6p1/2N3p1/1p4p1/bP4p1/5pPk/1K3B1n w - - bm #34; PV: c5e4 h2g1 e4d2 g1h2 d2c4 h2g1 c4e3 g1h2 e3g4 h2g1 g4e3 g1h2 e3c4 h2g1 c4d2 g5g4 b1c2 g1h2 d2c4 h2g1 c4e3 g1h2 e3g4 h2g1 g4e3 g1h2 e3c4 h2g1 c4d2 g6g5 c2b1 g5g4 b1c2 g1h2 d2c4 h2g1 c4e3 g1h2 e3g4 h2g1 g4e3 g1h2 e3c4 h2g1 c4d2 a3c1 c2c1 g7g6 c1b2 g6g5 b2c1 g5g4 c1b2 g1h2 d2c4 h2g1 c4e3 g1h2 e3g4 h2g1 g4e3 g1h2 e3c4 h2g1 c4d2 g1h2 d2f3; 8/2Q5/8/8/1k1p4/4p1p1/3prpp1/3Kbbrn w - - bm #34; PV: c7h7 b4b3 h7b1 b3a3 b1c2 a3b4 c2a2 b4b5 a2a3 b5b6 a3a4 b6b7 a4a5 d4d3 a5a1 b7b6 a1a4 b6b7 a4a5 b7b8 a5a6 b8c7 a6b5 c7c8 b5b6 c8d7 b6c5 d7d8 c5c6 d8e7 c6d5 e7f6 d5d6 f6f7 d6e5 f7f8 e5e6 f8g7 e6f5 g7h8 f5g5 h8h7 g5e5 h7g8 e5f6 g8h7 f6f8 h7g6 f8e7 g6f5 e7d6 f5e4 d6c5 e4f4 c5d5 f4g4 d5e5 g4h4 e5e7 h4g4 e7f6 g4h5 f6g7 h5h4 g7g6 h4h3 g6h5; k1q4r/p7/P3P3/1N6/8/nQ2K3/6p1/2n5 w - - bm #34; PV: b3d5 a8b8 d5e5 b8a8 e5e4 a8b8 e4f4 b8a8 f4f3 a8b8 f3g3 b8a8 g3g2 a8b8 g2g3 b8a8 b5c7 a8b8 c7e8 b8a8 g3g2 a8b8 g2b2 c1b3 b2b3 b8a8 b3d5 a8b8 d5e5 b8a8 e5e4 a8b8 e4f4 b8a8 f4f3 a8b8 f3g3 b8a8 g3g2 a8b8 g2b2 a3b5 b2b5 b8a8 b5d5 a8b8 d5e5 b8a8 e5e4 a8b8 e4f4 b8a8 f4f3 a8b8 f3g3 b8a8 g3g2 a8b8 g2b2 b8a8 e8c7 c8c7 b2h8 c7b8 h8h1 b8b7 h1b7; @@ -6430,6 +6429,7 @@ Q2B1r2/K4pr1/6R1/4p3/p4p1N/7k/p1p1p1p1/7b w - - bm #35; PV: a8f3 h3h2 f3g3 f4g3 4B1Rn/1p1p1rbr/3P2kp/3P3R/1p1p2P1/1P2p3/2P1P3/4K3 w - - bm #35; PV: e1d1 g6f6 d1c1 f6g6 c1b1 g6f6 b1b2 f6g6 b2c1 g6f6 c1d1 f6g6 d1e1 b7b6 e1d1 g6f6 d1c1 f6g6 c1b1 g6f6 b1b2 f6g6 b2c1 g6f6 c1d1 f6g6 d1e1 b6b5 e1d1 g6f6 d1c1 f6g6 c1b1 g6f6 b1b2 f6g6 b2c1 g6f6 c1d1 f6g6 d1e1 g6f6 e1f1 f6g6 f1g2 g6f6 g2f3 f6g6 f3e4 d4d3 e4d3 g6f6 d3d4 f6g6 d4e3 g6f6 e3f3 f6g6 f3g3 g6f6 e2e4 f6g6 g3h4 g6f6 h5f5 f6g6 e4e5 h6h5 f5f6; 8/8/2N1p3/p7/rp2p3/kp6/p1pQN2K/bb6 w - - bm #35; PV: d2c1 a1b2 c6e5 a2a1q e5c4 a3a2 h2g2 a4a3 g2h3 a3a4 h3g4 a4a3 g4h5 a3a4 h5g6 a4a3 g6f7 e6e5 f7e8 a3a4 e8d7 a4a3 d7d6 a3a4 d6c6 a4a3 c6b5 e4e3 b5c6 a3a4 c6d6 a4a3 d6d7 a3a4 d7c6 a4a3 c6b5 e5e4 b5c6 a3a4 c6d5 a4a3 d5e4 a3a4 e4f3 a4a3 f3g2 a3a4 g2g1 a4a3 g1h1 a3a4 h1g2 a4a3 g2f3 a3a4 f3e4 a4a3 e4d5 a3a4 d5c6 a4a3 c6b5 a3a4 b5a4 b2e5 c1a3 b4a3 e2c1; k7/rn1N4/n1B4p/8/5p1p/b1N1pP2/P3P1P1/3K4 w - - bm #35; PV: c3d5 a3c5 d1c1 c5d4 c1b1 d4c5 b1b2 c5a3 b2a1 a3c5 a1b1 c5d4 b1c1 d4c5 c1d1 c5d4 a2a3 d4c5 d1e1 c5d4 e1f1 d4c5 f1g1 c5d4 g1h2 d4c5 h2h3 h6h5 h3h2 c5d4 h2h1 d4c5 h1g1 c5d4 g1f1 d4c5 f1e1 c5d4 e1d1 d4c5 a3a4 c5d4 d1c1 d4c5 c1b2 c5d4 b2a3 d4c5 a3b3 c5d4 b3c4 d4c5 a4a5 h4h3 g2h3 h5h4 c4b3 c5d4 b3a3 d4c5 a3a4 c5d4 a4b5 d4c5 b5c4 c5d4 c4d4 a6b4 d5c7; +8/p7/qb5p/p6p/p7/7p/2P1P2k/2Q2K2 w - - bm #36; PV: c1f4 h2h1 f4e4 h1h2 e4e5 h2h1 e5d5 h1h2 d5d6 h2h1 d6c6 h1h2 c2c4 h2g3 c6f3 g3h2 f3f4 h2h1 f4e4 h1h2 e4e5 h2h1 e5d5 h1h2 d5d6 h2h1 d6c6 h1h2 e2e3 b6e3 c6a6 h2g3 a6g6 e3g5 g6d3 g3f4 d3h3 g5d8 c4c5 d8e7 h3h5 e7g5 f1e2 a4a3 h5f3 f4e5 f3a3 e5d5 e2d3 g5h4 a3a2 d5c5 a2c4 c5d6 c4h4 d6e5 h4d4 e5f5 d4d5 f5f6 d3e4 a5a4 d5c6 f6f7 e4f5 a4a3 c6c7 f7g8 f5f6 a3a2 c7g7; 6q1/1p6/1r1P1rpQ/4n3/1P1K1Pk1/8/bP1B1Ppn/6b1 w - - bm #36; PV: h6g5 g4f3 g5g3 f3e2 g3e3 e2d1 e3e1 d1c2 e1c1 c2b3 c1c3 b3a4 c3a3 a4b5 a3a5 b5c6 a5c5 c6d7 c5c7 d7e6 c7e7 e6f5 e7e5 f5g4 e5g5 g4f3 g5g3 f3e2 g3e3 e2d1 e3e1 d1c2 e1c1 c2b3 c1c3 b3a4 c3a3 a4b5 a3a5 b5c6 a5c5 c6d7 c5c7 d7e6 c7e7 e6f5 e7e4 f5g4 e4g2 g4f5 g2g5 f5e6 g5e5 e6d7 e5e7 d7c6 e7c7 c6b5 c7c5 b5a4 c5a5 a4b3 a5a3 b3c2 a3d3 c2d1 d2c3 d1c1 d3d2 c1b1 d2d1; 8/6r1/5pPB/4p3/3p3p/3R2p1/p1p1p3/4k1K1 w - - bm #36; PV: h6d2 e1d1 d2b4 d1c1 b4a3 c1b1 d3b3 b1a1 a3b2 a1b1 b2d4 b1c1 d4e3 c1d1 b3d3 d1e1 e3d2 e1d1 d2b4 d1c1 b4a3 c1b1 d3b3 b1a1 a3b2 a1b1 b2e5 b1c1 e5f4 c1d1 b3d3 d1e1 f4d2 e1d1 d2b4 d1c1 b4a3 c1b1 d3b3 b1a1 a3b2 a1b1 b2f6 b1c1 f6g5 c1d1 b3d3 d1e1 g5d2 e1d1 d2b4 d1c1 b4a3 c1b1 d3b3 b1a1 a3b2 a1b1 b2g7 b1c1 g7h6 c1d1 b3d3 d1e1 h6d2 e1d1 d2g5 d1e1 g5h4 a2a1q h4g3; 8/pp3p2/8/8/2p1p2N/2p1B3/1pp1k1NK/brrb4 w - - bm #36; PV: h4f5 e2f3 h2h3 f3e2 h3g3 e2f1 g3h2 f1e2 h2h3 a7a6 h3g3 e2f1 g3h2 f1e2 h2h3 a6a5 h3g3 e2f1 g3h2 f1e2 h2h3 a5a4 h3g3 e2f1 g3h2 f1e2 h2h3 b7b6 h3g3 e2f1 g3h2 f1e2 h2h3 f7f6 h3g3 e2f1 g3h2 f1e2 h2h3 b6b5 h3g3 e2f1 g3h2 f1e2 h2h3 b5b4 h3g3 e2f1 g3h2 f1e2 h2h3 a4a3 h3g3 e2f1 g3h2 f1e2 h2h3 a3a2 h3g3 e2f1 g3h2 f1e2 h2h3 b4b3 h3g3 e2f1 g3h2 f1e2 h2h3 e2d3 g2f4;