any move stockfish could have played different to avoid dra

[jmartus]

is there any moves stockfish could have played different to avoid draw?

[Event "?"]
[Site "play.chessanytime.com"]
[Date "2015.4.27"]
[Time "6:05:20"]
[Round "?"]
[White "Petrarque"]
[Black "Stockfish Dev version April 18th 4 cores 50 contempt"]
[Result "1/2-1/2"]
[WhiteElo "2303"]
[BlackElo "2746"]
[Opening "B95 Sicilian: Najdorf, 6...e6"]

{Time control = 3 1 Book(s): barracuda.bk}
1. e4 c5 {0.00/0 0.0 } 2. Nf3 d6 {0.00/0 0.0 } 3. d4 cxd4 {0.00/0 0.0 } 4. Nxd4
Nf6 {0.00/0 0.0 } 5. Nc3 a6 {0.00/0 0.0 } 6. Bg5 e6 {0.00/0 0.0 } 7. Qf3 Nbd7
{0.00/0 0.0 } 8. Be2 Qc7 {0.00/0 0.0 } 9. O-O h6 {0.00/22 5.8 } 10. Qh3 Be7
{0.00/20 0.4 } 11. Be3 b5 {0.13/25 7.0 } 12. a3 O-O {0.09/25 1.5 } 13. Qg3 Kh8
{0.21/24 0.6 } 14. Nd5 Nxd5 {0.18/24 3.8 } 15. exd5 exd5 {0.19/24 0.5 } 16. Rad1
Bf6 {0.10/25 12.3 } 17. Bf3 Nb6 {0.18/24 3.8 } 18. c3 Be5 {0.27/25 13.0 } 19. Qh4
Kg8 {0.19/24 2.9 } 20. Rfe1 Re8 {0.15/24 5.1 } 21. Re2 Rb8 {0.24/23 0.7 } 22. Nc2
a5 {0.27/25 12.8 } 23. Bxb6 Qxb6 {0.21/26 1.2 } 24. g3 d4 {0.04/26 3.3 } 25. Qxd4
Bxd4 {-0.02/27 9.2 } 26. Rxe8+ Kh7 {0.00/26 0.6 } 27. Nxd4 Bh3 {0.11/26 4.6 }
28. Be4+ f5 {-0.03/30 6.5 } 29. Rxb8 Qxb8 {0.05/29 0.6 } 30. Nxf5 Bxf5 {0.00/30
8.6 } 31. Bxf5+ g6 {0.00/27 0.6 } 32. Be4 b4 {0.01/30 5.9 } 33. axb4 axb4 {0.12/30
5.6 } 34. Kg2 Qc7 {0.20/29 3.1 } 35. Bf3 bxc3 {0.25/30 5.5 } 36. bxc3 Qxc3 {0.25/31
0.6 } 37. Rxd6 Qb4 {0.25/32 0.4 } 38. Rd7+ Kg8 {0.37/37 6.6 } 39. h4 Kh8 {0.41/32
16.5 } 40. h5 gxh5 {0.50/37 0.1 } 41. Bxh5 Qe4+ {0.50/42 2.9 } 42. Bf3 Qc4 {0.50/42
0.5 } 43. Rb7 Qd3 {0.50/46 2.7 } 44. Rb8+ Kg7 {0.50/46 4.1 } 45. Rb6 Qc2 {0.50/44
2.2 } 46. Rd6 Qc1 {0.50/39 3.6 } 47. Rc6 Qb1 {0.50/44 0.7 } 48. Rc7+ Kf6 {0.50/50
0.2 } 49. Rc5 Qb4 {0.50/43 3.6 } 50. Rc6+ Kg5 {0.50/42 0.6 } 51. Re6 Qd4 {0.50/43
0.1 } 52. Bb7 Qd7 {0.46/38 3.0 } 53. Rb6 Qc7 {0.47/39 4.6 } 54. Rb4 Qc5 {0.50/40
3.2 } 55. Rf4 Kg6 {0.50/40 2.3 } 56. Bf3 Kg7 {0.50/40 2.1 } 57. Rh4 Qc1 {0.50/44
0.5 } 58. Rh2 Qb2 {0.50/43 5.4 } 59. Rh1 Qd2 {0.50/43 2.5 } 60. Rb1 Kf6 {0.50/39
2.9 } 61. Ra1 Qd3 {0.50/38 3.7 } 62. Rd1 Qh7 {0.50/43 3.9 } 63. Rh1 Qg7 {0.50/44
2.2 } 64. Rh4 Ke6 {0.50/41 1.5 } 65. Rg4 Qf6 {0.50/40 2.3 } 66. Re4+ Kd7 {0.50/40
1.1 } 67. Bg4+ Kc7 {0.50/41 2.6 } 68. Re1 Qg7 {0.50/40 2.8 } 69. Rc1+ Kd6 {0.50/41
1.7 } 70. Rd1+ Ke5 {0.50/38 1.0 } 71. f4+ Ke4 {0.50/36 2.3 } 72. Re1+ Kd3 {0.50/34
1.3 } 73. Bf3 Qf6 {0.50/39 2.8 } 74. Re5 Qb6 {0.50/38 1.4 } 75. g4 Kc4 {0.50/30 1.5
} 76. Bd1 Qd6 {0.50/37 1.7 } 77. Be2+ Kd4 {0.50/39 2.1 } 78. Bd1 Qf8 {0.50/37 1.4 }
79. Kg3 Qa3+ {0.50/38 0.5 } 80. Kf2 Qc1 {0.50/34 1.2 } 81. Bf3 Qxf4 {0.50/39 0.1 }
82. Re4+ Qxe4 {0.50/41 0.5 } 83. Bxe4 Kxe4 {0.50/36 0.6 } 84. Kg3 h5 {0.50/41 1.1
} 85. gxh5 Ke5 {0.50/41 0.1 } 86. Kg4 Kf6 {0.50/44 2.2 } 87. h6 Kg6 {0.50/53 1.1 }
88. Kg3 Kxh6 {Neither player has mating material} 1/2-1/2

[zullil]

is there any moves stockfish could have played different to avoid draw?
[pgn]
[Event "?"]
[Site "play.chessanytime.com"]
[Date "2015.4.27"]
[Time "6:05:20"]
[Round "?"]
[White "Petrarque"]
[Black "Stockfish Dev version April 18th 4 cores 50 contempt"]
[Result "1/2-1/2"]
[WhiteElo "2303"]
[BlackElo "2746"]
[Opening "B95 Sicilian: Najdorf, 6...e6"]

{Time control = 3 1 Book(s): barracuda.bk}
1. e4 c5 {0.00/0 0.0 } 2. Nf3 d6 {0.00/0 0.0 } 3. d4 cxd4 {0.00/0 0.0 } 4. Nxd4
Nf6 {0.00/0 0.0 } 5. Nc3 a6 {0.00/0 0.0 } 6. Bg5 e6 {0.00/0 0.0 } 7. Qf3 Nbd7
{0.00/0 0.0 } 8. Be2 Qc7 {0.00/0 0.0 } 9. O-O h6 {0.00/22 5.8 } 10. Qh3 Be7
{0.00/20 0.4 } 11. Be3 b5 {0.13/25 7.0 } 12. a3 O-O {0.09/25 1.5 } 13. Qg3 Kh8
{0.21/24 0.6 } 14. Nd5 Nxd5 {0.18/24 3.8 } 15. exd5 exd5 {0.19/24 0.5 } 16. Rad1
Bf6 {0.10/25 12.3 } 17. Bf3 Nb6 {0.18/24 3.8 } 18. c3 Be5 {0.27/25 13.0 } 19. Qh4
Kg8 {0.19/24 2.9 } 20. Rfe1 Re8 {0.15/24 5.1 } 21. Re2 Rb8 {0.24/23 0.7 } 22. Nc2
a5 {0.27/25 12.8 } 23. Bxb6 Qxb6 {0.21/26 1.2 } 24. g3 d4 {0.04/26 3.3 } 25. Qxd4
Bxd4 {-0.02/27 9.2 } 26. Rxe8+ Kh7 {0.00/26 0.6 } 27. Nxd4 Bh3 {0.11/26 4.6 }
28. Be4+ f5 {-0.03/30 6.5 } 29. Rxb8 Qxb8 {0.05/29 0.6 } 30. Nxf5 Bxf5 {0.00/30
8.6 } 31. Bxf5+ g6 {0.00/27 0.6 } 32. Be4 b4 {0.01/30 5.9 } 33. axb4 axb4 {0.12/30
5.6 } 34. Kg2 Qc7 {0.20/29 3.1 } 35. Bf3 bxc3 {0.25/30 5.5 } 36. bxc3 Qxc3 {0.25/31
0.6 } 37. Rxd6 Qb4 {0.25/32 0.4 } 38. Rd7+ Kg8 {0.37/37 6.6 } 39. h4 Kh8 {0.41/32
16.5 } 40. h5 gxh5 {0.50/37 0.1 } 41. Bxh5 Qe4+ {0.50/42 2.9 } 42. Bf3 Qc4 {0.50/42
0.5 } 43. Rb7 Qd3 {0.50/46 2.7 } 44. Rb8+ Kg7 {0.50/46 4.1 } 45. Rb6 Qc2 {0.50/44
2.2 } 46. Rd6 Qc1 {0.50/39 3.6 } 47. Rc6 Qb1 {0.50/44 0.7 } 48. Rc7+ Kf6 {0.50/50
0.2 } 49. Rc5 Qb4 {0.50/43 3.6 } 50. Rc6+ Kg5 {0.50/42 0.6 } 51. Re6 Qd4 {0.50/43
0.1 } 52. Bb7 Qd7 {0.46/38 3.0 } 53. Rb6 Qc7 {0.47/39 4.6 } 54. Rb4 Qc5 {0.50/40
3.2 } 55. Rf4 Kg6 {0.50/40 2.3 } 56. Bf3 Kg7 {0.50/40 2.1 } 57. Rh4 Qc1 {0.50/44
0.5 } 58. Rh2 Qb2 {0.50/43 5.4 } 59. Rh1 Qd2 {0.50/43 2.5 } 60. Rb1 Kf6 {0.50/39
2.9 } 61. Ra1 Qd3 {0.50/38 3.7 } 62. Rd1 Qh7 {0.50/43 3.9 } 63. Rh1 Qg7 {0.50/44
2.2 } 64. Rh4 Ke6 {0.50/41 1.5 } 65. Rg4 Qf6 {0.50/40 2.3 } 66. Re4+ Kd7 {0.50/40
1.1 } 67. Bg4+ Kc7 {0.50/41 2.6 } 68. Re1 Qg7 {0.50/40 2.8 } 69. Rc1+ Kd6 {0.50/41
1.7 } 70. Rd1+ Ke5 {0.50/38 1.0 } 71. f4+ Ke4 {0.50/36 2.3 } 72. Re1+ Kd3 {0.50/34
1.3 } 73. Bf3 Qf6 {0.50/39 2.8 } 74. Re5 Qb6 {0.50/38 1.4 } 75. g4 Kc4 {0.50/30 1.5
} 76. Bd1 Qd6 {0.50/37 1.7 } 77. Be2+ Kd4 {0.50/39 2.1 } 78. Bd1 Qf8 {0.50/37 1.4 }
79. Kg3 Qa3+ {0.50/38 0.5 } 80. Kf2 Qc1 {0.50/34 1.2 } 81. Bf3 Qxf4 {0.50/39 0.1 }
82. Re4+ Qxe4 {0.50/41 0.5 } 83. Bxe4 Kxe4 {0.50/36 0.6 } 84. Kg3 h5 {0.50/41 1.1
} 85. gxh5 Ke5 {0.50/41 0.1 } 86. Kg4 Kf6 {0.50/44 2.2 } 87. h6 Kg6 {0.50/53 1.1 }
88. Kg3 Kxh6 {Neither player has mating material} 1/2-1/2
[/pgn]

[jmartus]

upvoted

[Dann Corbit]

At no point in the game did stockfish have any advantage, so I suggest that unless analysis goes to correspondence chess depth, a draw is the best outcome that would reasonably be realized for this game.

Here are the analyzed EPD records:

Code: Select all

rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - acd 48; acs 212911; bm e6; c3 "c5"; cce -38; ce -16; id "es-dc-neutral.0005"; pm c5 {1218905} e5 {412609} e6 {257916} c6 {204175} d5 {78062} d6 {71821} g6 {57457} Nf6 {46929} Nc6 {20542} b6 {4882} a6 {1853} g5 {987} h6 {878} a5 {501} h5 {447} Na6 {410} f6 {336} f5 {276} Nh6 {273} b5 {241}; pv e6 d4 d5 Nd2 c5 Ngf3 Nf6 exd5 exd5 Bb5+ Bd7 Bxd7+ Nbxd7 O-O Be7 dxc5 Nxc5 Nb3 Nce4 Nfd4 O-O Nf5 Re8 Nxe7+ Rxe7 Nd4 Rc8 Re1 Nd6 Rxe7 Qxe7 Bf4 a6 Bxd6 Qxd6 c3 g6 g3 Ne4 Kg2 Qb6 Qb3 Qxb3; white_wins 874667; black_wins 685852; draws 642462; Opening ECO:B00; Opening: King's pawn opening; 1. e4 *; 
rnbqkbnr/pp1ppppp/8/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - acd 37; acs 1045; bm d6; c3 "d6"; c4 "e6"; cce -32; ce -16; id "es-dc-neutral.0014"; pm d6 {493525} Nc6 {251116} e6 {227189} g6 {17677} a6 {9061} Nf6 {5454} b6 {1422} Qc7 {792} Qa5 {470} h6 {324} d5 {273} Qb6 {108} f5 {100} f6 {69} Nh6 {65} e5 {41} h5 {10} a5 {5} c4 {4}; pv d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be2 e6 O-O Be7 Qd3 O-O a4 Bd7 Rd1 Nc6 Nxc6 Bxc6 a5 Qc7 Be3 Rac8 Bb6 Qb8 Bd4 d5 e5 Nd7 f4 Bb4 Qe3 Rfd8 f5 exf5 e6 Nf6 e7 Re8; white_wins 379885; black_wins 310077; draws 264647; Opening Sicilian Defense: O'Kelly Variation. ; CaxtonID: 2139 ECO: B27; 
rnbqkbnr/pp2pppp/3p4/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq - acd 39; acs 1099; bm cxd4; c3 "cxd4"; cce -29; ce -14; id "es-dc-neutral.0092"; pm cxd4 {399181} Nf6 {15951} Qa5+ {271} Nd7 {118} Qc7 {59} e6 {20} Nc6 {13} a6 {12} c4 {9} Bg4 {7} b6 {7} g6 {7} Bd7 {6} Qb6 {2} d5 {1} e5 {1} f5 {1}; pv cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 Qf3 h6 Be3 Nc6 h3 Nxd4 Bxd4 e5 Be3 b5 a3 Be7 Bd3 O-O Rd1 Bd7 O-O Rc8 Qe2 Re8 Qd2 Bc6 Rfe1 Bb7 f3 Nd7 a4 bxa4 Nxa4 Bh4 Re2 Bg5 Nc3 Bxe3+ Rxe3 Nc5; white_wins 162341; black_wins 137058; draws 92281; Opening ECO:B53a; Sicilian: 2...d6 3.d4; 1.e4 c5 2.Nf3 d6 3.d4 *; 
rnbqkbnr/pp2pppp/3p4/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - acd 40; acs 1272; bm Nf6; c3 "Nf6"; cce -27; ce -18; id "es-dc-neutral.0173"; pm Nf6 {377885} Nc6 {3509} a6 {2146} e6 {1954} e5 {1792} g6 {1355} Qc7 {585} Bd7 {187} Nd7 {66} Qb6 {60} d5 {18} Qa5+ {7} b6 {4} a5 {1}; pv Nf6 Nc3 a6 Be2 e5 Nb3 Be7 O-O O-O Qd3 Qc7 Bg5 Be6 f4 exf4 Bxf4 Nc6 Qg3 Kh8 Be3 Ne5 Nd4 b5 a3 Rac8 Nf5 Bxf5 exf5 Qb7 Bd4 Ne4 Bf3 Nxg3 Bxb7 Rb8 hxg3 Rxb7 Nd5 Rc8 c3 a5; white_wins 151906; black_wins 129222; draws 85885; Opening Sicilian Defense: Dragon Variation. Modern Bc4 Variation ; CaxtonID: 2140 ECO: B54; 
rnbqkb1r/pp2pppp/3p1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R b KQkq - acd 41; acs 1723; bm a6; c3 "a6"; cce -28; ce -15; id "es-dc-neutral.0018"; pm a6 {255910} Nc6 {72548} g6 {31247} e6 {26610} e5 {3561} Bd7 {2253} Nbd7 {873} Qc7 {193} h6 {164} a5 {111} Bg4 {27} Qb6 {22} Qa5 {19} h5 {17} Na6 {11} Be6 {8} b6 {3} g5 {2} d5 {1}; pv a6 Be3 e5 Nf3 Be7 Bc4 O-O O-O Nc6 Bg5 Be6 Bb3 Nd7 Bxe7 Qxe7 Nd5 Bxd5 Bxd5 Rac8 c3 Nf6 Re1 Nxd5 Qxd5 Nd8 Rad1 Rc6 g3 Ne6 Kg2 Rfc8 Qd3 Nc5 Qe2 Qe6 b3 b5 c4 Rb8 cxb5 axb5 h3 Rcc8; white_wins 153317; black_wins 129753; draws 86712; Opening Sicilian Defense: Najdorf Variation. ; CaxtonID: 2142 ECO: B56; 
rnbqkb1r/1p2pppp/p2p1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R b KQkq - acd 38; acs 1526; bm e6; c3 "e6"; cce 2; ce 0; id "es-dc-neutral.0345"; pm e6 {29492} Nc6 {2007} Nbd7 {1890} e5 {657} h6 {75} Bd7 {68} b5 {56} Qa5 {42} Qb6 {42} g6 {29} Bg4 {6} Qc7 {4} Nfd7 {2}; pv e6 Qf3 Nbd7 a3 Be7 Be2 Qc7 O-O-O b5 Qg3 Rb8 f4 h6 Bh4 b4 axb4 Rxb4 Rhf1 Qb6 e5 Rxd4 Qxg7 Rg8 exf6 Rxd1+ Nxd1 Nxf6 Qxh6 Rg6 Qh8+ Rg8 Qh6; white_wins 12180; black_wins 12304; draws 6648; Opening Sicilian Defense: Najdorf Variation. ; CaxtonID: 2154 ECO: B94; 
rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP2PPP/R3KB1R b KQkq - acd 40; acs 1515; bm Nbd7; c3 "Nbd7"; cce 23; ce 0; pm h6 {656} Nbd7 {633} Be7 {306} Bd7 {104} Nc6 {17} e5 {3} Qb6 {1}; pv Nbd7 Be2 Qc7 a4 b6 O-O Bb7 Rfe1 Be7 Qg3 O-O Bh6 Ne8 Be3 Nef6 Bh6; white_wins 525; black_wins 600; draws 293; Opening ECO:B95j; Sicilian: Najdorf, 6...e6 7.Qf3; 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.Qf3 *; 
r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP1BPPP/R3K2R b KQkq - acd 41; acs 1756; bm Qc7; c3 "Qc7"; cce 79; ce 0; pm Qa5 {42} Be7 {37} Qc7 {35} h6 {27} Qb6 {1}; pv Qc7 O-O Be7 a4 b6 Rad1 Bb7 Qg3 O-O Bh6 Ne8 Be3 Nef6 Bh6; white_wins 29; black_wins 47; draws 25; 
r1b1kb1r/1pqn1ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP1BPPP/R4RK1 b kq - acd 36; acs 281; bm Be7; c3 "h6"; cce -93; ce 0; pm b5 {18} h6 {3}; pv Be7 a4 b6 Qg3 Bb7 Rfd1 O-O Bh6 Ne8 Be3 Nef6 Bh6; white_wins 7; black_wins 3; draws 9; 
r1b1kb1r/1pqn1pp1/p2ppn1p/6B1/3NP3/2N4Q/PPP1BPPP/R4RK1 b kq - acd 36; acs 493; bm b5; c3 "Be7"; ce 0; pm b5; pv b5 a3 Be7 Rad1 Rb8 Be3 b4 axb4 Rxb4 Bc1 g6 Qe3 Bb7 f3 Nc5 Na2 Ra4 Nc3 Rb4;
r1b1k2r/1pqnbpp1/p2ppn1p/8/3NP3/2N1B2Q/PPP1BPPP/R4RK1 b kq - acd 35; acs 187; bm b5; c3 "b5"; ce 0; pm b5; pv b5 a3 Bb7 Rad1 g6 f3 d5 exd5 Nxd5 Nxd5 Bxd5 f4 Nf6 Bd2 Kf8 Bc3 Rd8 Qe3 Kg8 Bb4 Bxb4 axb4 Kg7 c3 Qb7 Qg3 Ne4 Qe1 Nf6 Qg3;
r1b1k2r/2qnbpp1/p2ppn1p/1p6/3NP3/P1N1B2Q/1PP1BPPP/R4RK1 b kq - acd 35; acs 348; bm Bb7; c3 "O-O"; ce 0; pm Bb7; pv Bb7 Rad1 Rc8 Rfe1 Kf8 Qg3 Nc5 f3 h5 h4 g6 Bd3 Kg7 Bf1 Ncd7 Bg5 Qb6 Be3 Qc7;
r1b2rk1/2qnbpp1/p2ppn1p/1p6/3NP3/P1N1B1Q1/1PP1BPPP/R4RK1 b - - acd 37; acs 406; bm Kh8; c3 "Kh8"; ce 0; pm Kh8; pv Kh8 Nd5 Nxd5 exd5 exd5 c3 Ne5 Rad1 Bf6 Nc2 Bb7 Bd4 Rae8 Ne3 Qe7 Qh3 Qe6 Qg3 Qe7;
r1b2r1k/2qnbpp1/p2ppn1p/1p1N4/3NP3/P3B1Q1/1PP1BPPP/R4RK1 b - - acd 39; acs 438; bm Nxd5; c3 "Nxd5"; ce 0; pm Nxd5; pv Nxd5 exd5 exd5 Bf3 Nf6 Bd1 Ne4 Qf3 Bg5 Bxg5 Nxg5 Qg3 Ne4 Qf4 Bd7 c3 Rae8 Bc2 Re5 Rae1 Nf6 Nf3 Re6 Nd4 Re5;
r1b2r1k/2qnbpp1/p2pp2p/1p1P4/3N4/P3B1Q1/1PP1BPPP/R4RK1 b - - acd 37; acs 427; bm exd5; c3 "exd5"; ce -2; pm exd5; pv exd5 c3 Ne5 Bf3 Be6 Bd1 Bf6 Bc2 Bd7 Rad1 Bg4 Rde1 Rae8 Bb3 Bh5 Bxd5 Nd3 Rb1 Bg6 Rfd1 Ne5 Rbc1 Nc4 Bxc4 bxc4 Bf4 Be5 Nc2 Bxf4 Qxf4 Re5 Nd4 Rfe8 Qd2 Kg8 f4 Re4 g3 d5;
r1b2r1k/2qnbpp1/p2p3p/1p1p4/3N4/P3B1Q1/1PP1BPPP/3R1RK1 b - - acd 41; acs 481; bm Bf6; c3 "Bf6"; ce 0; pm Bf6; pv Bf6 c3 Ne5 Nc2 Bb7 Bd4 Rae8 f4 Nd7 Bf3 Re7 Rfe1 Re6 Rf1 Re7;
r1b2r1k/2qn1pp1/p2p1b1p/1p1p4/3N4/P3BBQ1/1PP2PPP/3R1RK1 b - - acd 42; acs 500; bm Be5; c3 "Nb6"; ce 0; pm Be5; pv Be5 Qh4 Bf6 Qg3;
r1b2r1k/2q2pp1/pn1p1b1p/1p1p4/3N4/P1P1BBQ1/1P3PPP/3R1RK1 b - - acd 35; acs 323; bm Be5; c3 "Be5"; ce -24; pm Be5; pv Be5 Qh4 Kg8 Rfe1 Re8 Nc2 Na4 Nb4 Nxb2 Nxd5 Qd8 Qxd8 Rxd8 Rb1 Nc4 Ne7+ Kf8 Bxa8 Kxe7 Bd5 Nxa3 Rbc1 Be6 Bb7 Nc4 f4 Nxe3 fxe5 Nc4 Bxa6 Nxe5 Rb1 Ra8 Bxb5 Rc8 Re3 Rb8 Re2;
r1b2r1k/2q2pp1/pn1p3p/1p1pb3/3N3Q/P1P1BB2/1P3PPP/3R1RK1 b - - acd 34; acs 217; bm Kg8; c3 "Kg8"; ce -20; pm Kg8; pv Kg8 Nc2 Nc4 Bc1 Bb7 Qg4 f5 Qh5 Nb6 Rfe1 Qd7 Nb4 Rae8 Re2 a5 Nd3 Bf6 Rxe8 Rxe8 Qg6 Re6 Nf4 Qe8 Qxe8+ Rxe8 Bh5 Re7 Bg6 d4 cxd4 Be4 Bd2 Nc4 Bc3 Bc2 Rc1 Be4;
r1b2rk1/2q2pp1/pn1p3p/1p1pb3/3N3Q/P1P1BB2/1P3PPP/3RR1K1 b - - acd 35; acs 243; bm Rb8; c3 "Re8"; ce -20; pm Rb8; pv Rb8 Re2 Re8 h3 Bd7 Qh5 Bf6 Nf5 d4 Bxd4 Bxd4 Rxd4 Rxe2 Bxe2 Bxf5 Qxf5 Re8 Re4 Re5 Rxe5 dxe5 Qf3 Qc8 Qe4 Qe6 Bg4 Qd5 Qxd5 Nxd5 Kf1 Ne7 Bd7 Kh7 Ke2 Kg6 a4 bxa4 Bxa4 Kf6 Bb3;
r1b1r1k1/2q2pp1/pn1p3p/1p1pb3/3N3Q/P1P1BB2/1P2RPPP/3R2K1 b - - acd 36; acs 505; bm Rb8; c3 "Rb8"; ce -19; pm Rb8; pv Rb8 h3 Bd7 Nc2 Nc4 Nb4 Nxe3 Rxe3 Qc4 Qxc4 bxc4 Rxd5 Bf4 Rxe8+ Rxe8 Kf1 Be6 Rd4 Bc1 Nxa6 Bf5 Nc7 Re5 Bd5 Bxb2 Nb5 Be6 Bxe6 Rxb5 Bxc4 Rc5 Bd3 g6 a4 d5 Rb4 Bxc3 Rb8+ Kg7 Ke2;
1rb1r1k1/2q2pp1/pn1p3p/1p1pb3/7Q/P1P1BB2/1PN1RPPP/3R2K1 b - - acd 37; acs 351; bm Na4; c3 "a5"; ce -6; pm Na4; pv Na4 Nb4 a5 Nxd5 Qc4 Qh5 Be6 g3 Qb3 Red2 b4 axb4 axb4 cxb4 Nxb2 Rb1 Qc4 Bg2 Rb5 Qf3 Bg4 Qe4 Qxe4 Bxe4 Nc4 Ra2 Nxe3 Nxe3 Be6 Ra5 Reb8 Rxb5 Rxb5 Bc6 Rb8 b5 Bd4 Nd5 Kf8 Kg2 h5 Nc7 Ke7 Nxe6 fxe6 f4;
1rb1r1k1/2q2pp1/1B1p3p/pp1pb3/7Q/P1P2B2/1PN1RPPP/3R2K1 b - - acd 38; acs 337; bm Qxb6; c3 "Qxb6"; ce -14; pm Qxb6; pv Qxb6 Ne3 Be6 Bxd5 b4 axb4 Qb5 Rc2 axb4 g3 bxc3 bxc3 Qd7 Qe4 Bxd5 Qxd5 g6 c4 Qa4 Rcc1 Qb4 Kg2 h5 c5 dxc5 Rxc5 Bg7 Rc7 Qf8 Qf3 Re7 Rdd7 Rxd7 Rxd7 Rd8 Rxd8 Qxd8 Qd5 Qxd5+ Nxd5;
1rb1r1k1/5pp1/1q1p3p/pp1pb3/7Q/P1P2BP1/1PN1RP1P/3R2K1 b - - acd 42; acs 454; bm d4; c3 "d4"; ce 0; pm d4; pv d4 Nxd4 b4 cxb4 axb4 Bd5 bxa3 bxa3 Bb7 Qe4 Bxd4 Qxd4 Qxd4 Rxe8+ Rxe8 Rxd4 Bxd5 Rxd5 Ra8 Rxd6 Rxa3 Rd8+ Kh7 Rd6 Kg8;
1rb1r1k1/5pp1/1q1p3p/pp2b3/3Q4/P1P2BP1/1PN1RP1P/3R2K1 b - - acd 43; acs 494; bm Bxd4; c3 "Bxd4"; ce 0; pm Bxd4; pv Bxd4 Rxe8+ Kh7 Nxd4 Bh3 Re3 Kh8 Be2 Qb7 Bf3 Qb6;
1rb1R1k1/5pp1/1q1p3p/pp6/3b4/P1P2BP1/1PN2P1P/3R2K1 b - - acd 45; acs 450; bm Kh7; c3 "Kh7"; ce 0; pm Kh7; pv Kh7 Nxd4 Bh3 Re3 Kh8 Be2 Qb7 Bf3 Qb6;
1rb1R3/5ppk/1q1p3p/pp6/3N4/P1P2BP1/1P3P1P/3R2K1 b - - acd 45; acs 489; bm Bh3; c3 "Bh3"; ce 0; pm Bh3; pv Bh3 Be4+ f5 Rxb8 Qxb8 Nxf5 Bxf5 Bxf5+ g6 Be4 b4 cxb4 axb4 Kg2 Kg7 Bf3 bxa3 bxa3 Qb6 a4 Kf7 a5 Qxa5 Rxd6 Qe5 Rc6 h5 h4 Qd4 Kf1 Qd3+ Kg2 Qd4;
1r2R3/5ppk/1q1p3p/pp6/3NB3/P1P3Pb/1P3P1P/3R2K1 b - - acd 47; acs 389; bm f5; c3 "f5"; ce 0; pm f5; pv f5 Rxb8 Qxb8 Nxf5 Bxf5 Bxf5+ g6 Be4 b4 axb4 axb4 Kg2 Kg7 Rd4 bxc3 bxc3 Qc7 h4 Qc5 Rd3 Qc4 Rd4 Qc5;
1R6/6pk/1q1p3p/pp3p2/3NB3/P1P3Pb/1P3P1P/3R2K1 b - - acd 47; acs 519; bm Qxb8; c3 "Qxb8"; ce 0; pm Qxb8; pv Qxb8 Nxf5 Bxf5 Bxf5+ g6 Be4 b4 cxb4 axb4 Kg2 bxa3 bxa3 Kg7 h4 Qb6 Bf3 Qa6 a4 Qxa4 Rxd6 Qb4 Rc6 h5 Be2 Qe4+ Bf3 Qd4 Be2 Qd5+ Bf3 Qd4;
1q6/6pk/3p3p/pp3N2/4B3/P1P3Pb/1P3P1P/3R2K1 b - - acd 46; acs 327; bm Bxf5; c3 "Bxf5"; ce 0; pm Bxf5; pv Bxf5 Bxf5+ g6 Be4 b4 cxb4 axb4 Kg2 Qc7 Rd4 bxa3 bxa3 Qc5 Rd3 Kg7 a4 Qc4 f3 Qa2+ Kh3 Qe6+ Kg2 Qa2+;
1q6/6pk/3p3p/pp3B2/8/P1P3P1/1P3P1P/3R2K1 b - - acd 48; acs 461; bm g6; c3 "g6"; ce 0; pm g6; pv g6 Be4 b4 cxb4 axb4 Kg2 bxa3 bxa3 Kg7 Bf3 Qb6 a4 Qb4 a5 Qxa5 Rxd6 Qb4 Ra6 Qd4 h4 Qd3 Rb6 h5 Rb4 Kf6 Rf4+ Kg7 Ra4 Kf6 Rf4+;
1q6/7k/3p2pp/pp6/4B3/P1P3P1/1P3P1P/3R2K1 b - - acd 48; acs 461; bm b4; c3 "b4"; ce 0; pm b4; pv b4 axb4 axb4 Kg2 Kg7 Rd4 bxc3 bxc3 Qc7 h4 Qc5 Rd3 Qc4 Rd4 Qc5;
1q6/7k/3p2pp/p7/1P2B3/2P3P1/1P3P1P/3R2K1 b - - acd 52; acs 426; bm axb4; c3 "axb4"; ce 0; pm axb4; pv axb4 Kg2 Kg7 Bd5 Qc7 Bf3 bxc3 bxc3 g5 Rd3 Kf6 c4 Qxc4 Rxd6+ Kg7 Rc6 Qd4 Rc7+ Kg6 Rc6+ Kg7;
1q6/7k/3p2pp/8/1p2B3/2P3P1/1P3PKP/3R4 b - - acd 52; acs 484; bm Kg7; c3 "Qc7"; ce 0; pm Kg7; pv Kg7 Bd5 Qc7 Bf3 bxc3 bxc3 g5 h3 Kg6 Rd5 Kg7 Rd1;
8/2q4k/3p2pp/8/1p6/2P2BP1/1P3PKP/3R4 b - - acd 56; acs 375; bm bxc3; c3 "bxc3"; ce 0; pm bxc3; pv bxc3 bxc3 g5 h3 Kg7 c4 Kf6 Bd5 h5 Re1 Kg7 Re6 h4 gxh4 gxh4 Re4 Qd8 Re6 Qg5+ Kf3 Qf5+ Kg2 Qf4 Re4 Qf6 Re6 Qg5+;
8/2q4k/3p2pp/8/8/2P2BP1/5PKP/3R4 b - - acd 64; acs 373; bm Qxc3; c3 "Qxc3"; ce 0; pm Qxc3; pv Qxc3 Rxd6 Qc7 Ra6 Qe5 h4 Kg7 Ra7+ Kg8 Ra6 Kg7;
8/7k/3R2pp/8/8/2q2BP1/5PKP/8 b - - acd 63; acs 437; bm Qc7; c3 "Qb4"; ce 0; pm Qc7; pv Qc7 Ra6 Qe5 Ra7+ Kg8 Ra6 Qf5 Ra8+ Kf7 Ra7+ Kf8 Ra8+ Kf7;
8/3R3k/6pp/8/1q6/5BP1/5PKP/8 b - - acd 63; acs 374; bm Kg8; c3 "Kg8"; ce 0; pm Kg8; pv Kg8 Bd5+ Kh8 Bf3 Kg8;
6k1/3R4/6pp/8/1q5P/5BP1/5PK1/8 b - - acd 62; acs 502; bm Kf8; c3 "Kh8"; ce 0; pm Kf8; pv Kf8 Rh7 Qd6 Rh8+ Kg7 Rc8 Qe5 Rc6 Qd4 Rc7+ Kf8 Rc6 Kg7;
7k/3R4/6pp/7P/1q6/5BP1/5PK1/8 b - - acd 68; acs 519; bm g5; c3 "gxh5"; ce 0; pm g5; pv g5 Rb7 Qd4 Rb8+ Kg7 Rb7+ Kg8 Rb8+ Kg7;
7k/3R4/7p/7B/1q6/6P1/5PK1/8 b - - acd 67; acs 202; bm Qb5; c3 "Qe4+"; ce 0; pm Qb5; pv Qb5 Rd8+ Kg7 Bf3 Qc5 Rd5 Qb4 Rf5 Qe1 Rd5 Kg6 Rd6+ Kg7 Rd5;
7k/3R4/7p/8/4q3/5BP1/5PK1/8 b - - acd 70; acs 273; bm Qc4; c3 "Qc4"; ce 0; pm Qc4; pv Qc4 Ra7 Qc5 Rf7 Qd4 Rf8+ Kg7 Rf4 Qd2 Rg4+ Kf7 Rf4+ Kg6 Be4+ Kg7 Rg4+ Kf7 Rf4+ Kg7;
7k/1R6/7p/8/2q5/5BP1/5PK1/8 b - - acd 68; acs 522; bm Qc2; c3 "Qd3"; ce 0; pm Qc2; pv Qc2 Rb5 Kg7 Rb7+ Kf6 Rb6+ Kg7 Re6 Qc5 Rc6 Qd4 Re6 Qc4 Rc6 Qd4;
1R5k/8/7p/8/8/3q1BP1/5PK1/8 b - - acd 64; acs 462; bm Kg7; c3 "Kg7"; ce 0; pm Kg7; pv Kg7 Rb4 Qc3 Rh4 Kg6 Be4+ Kg7 Rg4+ Kf7 Bd5+ Kf6 Rh4 Qc5 Bf3 Kg6 Ra4 Kg7 Be4 Kf7 Ra6 Qc4 Ra7+ Kf6 Bf3 Qd4 Ra5 Kg6 Rd5 Qb4 Rd1 Kf6 Rh1 Kg6 Rh4 Qc5;
8/6k1/1R5p/8/8/3q1BP1/5PK1/8 b - - acd 64; acs 446; bm Qd2; c3 "Qc2"; ce -1; pm Qd2; pv Qd2 Rb7+ Kf6 Rb8 Qd4 Rf8+ Kg6 Rg8+ Kf5 Rg4 Qd2 Rh4 Kf6 Rf4+ Ke6 Be4 Qd6 Rf3 Qd4 Bg6 Qd6 Rf4 Qd2 Rh4 Kf6 Be4 Ke5 Bc6 Kf5 Rf4+ Ke5 Ba8 Kd6 Be4 Ke5 Bc6 Qc1 Bf3 Qd2 Re4+ Kf5 Re3 Qb4 Re8 Qc4 Re4 Qd3 Re1 Qd2 Rd1 Qc2 Rd6 Kg5 Bd5 Qc5 Rd7 Kf6 Bf3 Qc2 Ra7 Kg6 Ra1 K;
8/6k1/3R3p/8/8/5BP1/2q2PK1/8 b - - acd 65; acs 482; bm Qc3; c3 "Qc1"; ce 0; pm Qc3; pv Qc3 Rd7+ Kf6 Rd6+ Kg7;
8/6k1/2R4p/8/8/5BP1/5PK1/2q5 b - - acd 65; acs 308; bm Qd2; c3 "Qb1"; ce -1; pm Qd2; pv Qd2 Re6 Qd3 Re4 Kf6 Rf4+ Kg7 Rh4 Qd6 Rg4+ Kf6 Rf4+ Kg6 Rc4 Qd2 Be4+ Kf6 Bb7 Kg7 Rc7+ Kf6 Rc6+ Kf7 Ra6 Ke7 Be4 Qe2 Ra7+ Kf6 Bb7 Qd3 Ra6+ Kg7 Ra4 Qe2 Bd5 Qe5 Bf3 Qc5 Re4 Kg6 Re6+ Kg7 Re1 Qd4 Rd1 Qc5 Rh1 Qc4 Rh5 Kg6 Re5 Kf6 Rd5 Qb4 Rh5 Qd2 Be4 Kg7 Rd5 Qb4 Rd;
8/2R3k1/7p/8/8/5BP1/5PK1/1q6 b - - acd 65; acs 447; bm Kf6; c3 "Kf6"; ce 0; pm Kf6; pv Kf6 Rc6+ Kg7 Ra6 Qf5 Ra7+ Kf6 Ra4 Qc5 Rh4 Kg6 Be4+ Kg7 Rh1 Qd4 Bc6 Qb6 Bd5 Qd6 Bb7 Kg6 Rc1 Qd4 Bf3 Kf6 Rc8 Kg7 Ra8 Qd2 Ra7+ Kf6 Ra6+ Kg7 Rc6 Qd3 Rc5 Qd6 Rb5 Kf6 Rd5 Qb4 Rh5 Kg6 Rh1 Qc4 Rd1 Kf6 Rd6+ Kg5 Rd8 Kf6 Rd7 Kg5 Rd6 Qb4 Ra6 Qc5 Be4 Qc4 Ra5+ Kf6 Bf3;
8/8/5k1p/2R5/8/5BP1/5PK1/1q6 b - - acd 71; acs 455; bm Qe1; c3 "Qb4"; ce 0; pm Qe1; pv Qe1 Rc6+ Kg5 Rc5+ Kg6 Bh5+ Kg7 Rc6 Qd2 Rg6+ Kf8 Rc6 Ke7 Bf3 Kf7 Be4 Ke7 Bf3;
8/8/2R2k1p/8/1q6/5BP1/5PK1/8 b - - acd 72; acs 476; bm Kg7; c3 "Kg5"; ce 0; pm Kg7; pv Kg7 Rc7+ Kf6 Rd7 Kg6 Rd5 Kf6 Rh5 Kg7 Rh4 Qd2 Rg4+ Kf6 Ra4 Qc2 Rd4 Qc5 Rf4+ Kg7 Ra4 Kg6 Rg4+ Kf6 Ra4 Kg6;
8/8/4R2p/6k1/1q6/5BP1/5PK1/8 b - - acd 69; acs 470; bm Qc4; c3 "Qd4"; ce 0; pm Qc4; pv Qc4 Rc6 Qd3 Rc5+ Kf6 Rc6+ Kg5;
8/1B6/4R2p/6k1/3q4/6P1/5PK1/8 b - - acd 64; acs 383; bm Qc4; c3 "Qd7"; ce 0; pm Qc4; pv Qc4 f4+ Kf5 Rxh6 Qe2+ Kh3 Qg4+ Kg2 Qe2+;
8/1B1q4/1R5p/6k1/8/6P1/5PK1/8 b - - acd 65; acs 484; bm Qc7; c3 "Qc7"; ce 0; pm Qc7; pv Qc7 f4+ Kf5 Rb5+ Kf6 Be4 Qc1 Rb6+ Kg7 Rb7+ Kf6 Rb6+;
8/1Bq5/7p/6k1/1R6/6P1/5PK1/8 b - - acd 61; acs 448; bm Qc3; c3 "Qc5"; ce 0; pm Qc3; pv Qc3 Rb5+ Kf6 Rb6+ Kg7 Bf3 Qc2 Re6 Qd2 Rc6 Qd3 Rc7+ Kf6 Rc6+ Kg5 Rc5+ Kg6 Bh5+ Kf6 Rc6+ Kg5 Rc5+ Kf6;
8/1B6/7p/2q3k1/5R2/6P1/5PK1/8 b - - acd 68; acs 406; bm Kg6; c3 "Kg6"; ce 0; pm Kg6; pv Kg6 Be4+ Kg7 Rg4+ Kf7 Rf4+ Kg7;
8/8/6kp/2q5/5R2/5BP1/5PK1/8 b - - acd 78; acs 491; bm Kg7; c3 "Kg7"; ce 0; pm Kg7; pv Kg7 Rg4+ Kf7 Rf4+ Kg7;
8/6k1/7p/2q5/7R/5BP1/5PK1/8 b - - acd 69; acs 509; bm Qc1; c3 "Qc1"; ce 0; pm Qc1; pv Qc1 Rh5 Qc3 Rh1 Qc5 Rh5 Qc1 Rd5 Qc3 Rd7+ Kf6 Rd6+ Kg7 Rd7+;
8/6k1/7p/8/8/5BP1/5PKR/2q5 b - - acd 71; acs 498; bm Qc3; c3 "Qb2"; ce -1; pm Qc3; pv Qc3 Rh4 Qe5 Rh5 Qd6 Rh1 Qc5 Rd1 Kg6 Be4+ Kf6 Rd3 Qb4 Bf3 Qc5 Rd8 Qe7 Rc8 Qe5 Ra8 Kg5 Ra6 Qd4 Re6 Qb4 Be4 Qc4 Re5+ Kf6 Rf5+ Kg7 Bf3 Qc3 Rb5 Qd2 Rb6 Qc3 Rd6 Qe5 Rd7+ Kf6 Rb7 Qc5 Rh7 Kg5 Rd7 Kf6 Rd5 Qc3 Rd6+ Kg7 Rc6 Qd3 Rc1 Kg6 Rd1 Qc4 Rd5 Qb4 Rd8 Qb6 Be4+ K;
8/6k1/7p/8/8/5BP1/1q3PK1/7R b - - acd 64; acs 426; bm Kg6; c3 "Qd2"; ce 0; pm Kg6; pv Kg6 Rd1 Qe5 Bb7 Qc5 Be4+ Kf7 Bf3 Kf6 Ra1 Qc4 Ra5 Qe6 Rc5 Qd7 Be4 Qd4 Rc6+ Ke5 Bf3 Qd2 Ra6 Kf5 Ra8 Qd3 Ra5+ Kg6 Rc5 Qd4 Rc6+ Kg5 Ra6 Qd3 Re6 Qd4 Re8 Qc5 Rh8 Qc3 Rg8+ Kf5 Rf8+ Kg6 Rd8 Qc4 Rd1 Qc5 Rd7 Kf6 Rd8 Kg6 Rd5 Qb4 Re5 Kf6 Re3 Qd4 Re4 Qc5 Rf4+ Kg7 Ra4;
8/6k1/7p/8/8/5BP1/3q1PK1/1R6 b - - acd 69; acs 490; bm Qd6; c3 "Kf6"; ce -1; pm Qd6; pv Qd6 Ra1 Qc5 Ra6 Qb5 Rd6 Qc4 Rc6 Qb4 Rc1 Kg6 Rh1 Qd6 Be4+ Kg7 Rh4 Qc5 Rf4 Qe5 Rg4+ Kf7 Rh4 Kg7 Bc6 Qc5 Bf3 Qe5 Re4 Qc5 Rf4 Kg6 Rh4 Kg7 Bb7 Kg6 Rg4+ Kf7 Bf3 Kf6 Ra4 Kg6 Rf4 Qd6 Rh4 Qc5 Ra4 Kf6 Rg4 Qc3 Bd5 Qd3 Rf4+ Kg7 Bc6 Qd6 Bb7 Qd2 Rc4 Qe2 Ra4 Qd3 Be4 Qe2;
8/8/5k1p/8/8/5BP1/3q1PK1/R7 b - - acd 73; acs 379; bm Qd3; c3 "Qd3"; ce 0; pm Qd3; pv Qd3 Rh1 Qd2 Rh5 Qc1 Rh4 Ke5 Rh5+ Kd6 Rh4 Qd2 Rh5 Ke7 Rh4 Kf6 Rh5;
8/8/5k1p/8/8/3q1BP1/5PK1/3R4 b - - acd 73; acs 361; bm Qc2; c3 "Qh7"; ce 0; pm Qc2; pv Qc2 Rd6+ Kg7 Rd7+ Kf8 Rd5 Kg7 Rd6 Qc5 Rd1 Kf6 Rh1 Kg6 Rh4 Kg7 Rh5 Qc2 Rd5 Kf6 Rh5 Kg7;
8/7q/5k1p/8/8/5BP1/5PK1/7R b - - acd 66; acs 416; bm Kg7; c3 "Qg7"; ce 0; pm Kg7; pv Kg7 Rd1 Qf5 Rd5 Qe6 Rd4 Qe1 Re4 Qc3 Re6 Qd2 Re7+ Kg8 Rb7 Kf8 Bh5 Qc3 Ra7 Qd3 Rf7+ Kg8 Rb7 Qd5+ Bf3 Qd3 Re7 Qd6 Re4 Kf7 Rh4 Qd2 Bh5+ Kf6 Rf4+ Kg5 Bf3 Kg6 Rg4+ Kf6 Rf4+ Kg6;
8/6q1/5k1p/8/7R/5BP1/5PK1/8 b - - acd 66; acs 505; bm Qh8; c3 "Ke6"; ce 0; pm Qh8; pv Qh8 Rg4 Qd8 Rf4+ Kg7 Rf5 Qd2 Rd5 Qb4 Rh5 Qd2 Re5 Qd4 Re6 Qd2 Rc6 Qd3 Rc5 Qd2 Rd5;
8/6q1/4k2p/8/6R1/5BP1/5PK1/8 b - - acd 65; acs 322; bm Qh7; c3 "Qf6"; ce -1; pm Qh7; pv Qh7 Rf4 Qc2 Re4+ Kf7 Rh4 Kg7 Rh5 Qb2 Rf5 Qc2 Ra5 Qc3 Ra7+ Kf6 Rb7 Qd4 Rb8 Qd3 Rb6+ Kg5 Rc6 Qd4 Ra6 Qc3 Ra4 Kf6 Rf4+ Ke6 Rh4 Qd2 Rh5 Kf7 Rd5 Qb4 Re5 Qd2 Rc5 Qd4 Rc6 Kg7 Re6 Qd3 Re7+ Kf6 Re1 Kg5 Re5+ Kf6 Rd5 Qa3 Rh5 Kg6 Rh1 Qb4 Rh4 Qd2 Rf4 Qc3 Rf8 Kg7 Rb8 Q;
8/8/4kq1p/8/4R3/5BP1/5PK1/8 b - - acd 61; acs 489; bm Kd6; c3 "Kd7"; ce 0; pm Kd6; pv Kd6 Ra4 Qg5 Ra2 Ke7 Be4 Qc5 f4 Qd4 Bf3 Kf6 Ra6+ Kg7 Rc6 Qb2+ Kh3 Qb3 Rc7+ Kf6 Rc6+ Kg7;
8/3k4/5q1p/8/4R1B1/6P1/5PK1/8 b - - acd 63; acs 520; bm Kd8; c3 "Kc7"; ce 0; pm Kd8; pv Kd8 Re3 Qg5 Be2 Qc5 Bf3 Kd7 Re1 Qg5 Re2 Kd6 Rc2 Ke6 Rc6+ Ke7 Rc4 Kf6 Rh4 Qd2 Rh5 Kg6 Rc5 Kf6 Rb5 Qd4 Ra5 Qb6 Rh5 Kg6 Re5 Kf6 Re4 Qc5 Rh4 Kg6 Be4+ Kg7 Rg4+ Kf7 Rf4+ Kg7 Rg4+;
8/2k5/5q1p/8/6B1/6P1/5PK1/4R3 b - - acd 62; acs 373; bm Qg5; c3 "Qg7"; ce 0; pm Qg5; pv Qg5 Bf3 Kd6 Re4 Qf6 Bg4 Qg5 Ra4 Ke7 Bf3 Qd2 Ra6 Kf8 Be4 Kg7 Bf3 Qd3 Rc6 Qd2 Rc7+ Kf8 Rc6 Kg7;
8/2k3q1/7p/8/6B1/6P1/5PK1/2R5 b - - acd 64; acs 477; bm Kd6; c3 "Kd6"; ce 0; pm Kd6; pv Kd6 Rd1+ Ke5 Bf3 Ke6 Rh1 Qg5 Be4 Kf6 Rh4 Qc1 Bf3 Qd2 Rc4 Qd3 Rf4+ Ke7 Bb7 Qd2 Rh4 Kf6 Bf3 Ke6 Rc4 Kf6 Bc6 Qd3 Rf4+ Ke7 Bf3 Ke6 Rh4 Qd2;
8/6q1/3k3p/8/6B1/6P1/5PK1/3R4 b - - acd 65; acs 469; bm Ke5; c3 "Ke5"; ce -1; pm Ke5; pv Ke5 Be2 Qb7+ Bf3 Qb4 Rh1 Qd2 Rh5+ Kf6 Bc6 Kg6 Rh4 Kg5 Bf3 Kf6 Rh5 Ke7 Rd5 Qc2 Rd4 Kf6 Rd6+ Kg5 Rc6 Qd3 Rb6 Qd4 Rb5+ Kf6 Rd5 Qb2 Be4 Qc3 Rf5+ Ke6 Rh5 Qf6 Bd5+ Ke7 Rh1 Qb6 Bf3 Qd6 Re1+ Kf6 Rd1 Qc5 Be4 Qe7 Bd5 Qe5 Bc6 Qc5 Bf3 Qc2 Rh1 Qd2 Rb1 Qd6 Rc1 Qd4 Rc6+;
8/6q1/7p/4k3/5PB1/6P1/6K1/3R4 b - - acd 62; acs 501; bm Ke4; c3 "Ke4"; ce 0; pm Ke4; pv Ke4 Re1+ Kd3 Bf3 Qb2+ Re2 Qc1 Re4 Qb2+ Re2;
8/6q1/7p/8/4kPB1/6P1/6K1/4R3 b - - acd 62; acs 407; bm Kd3; c3 "Kd3"; ce 0; pm Kd3; pv Kd3 Bf3 Qb2+ Re2 Qc1 Re4 Qc2+ Re2 Qc1;
8/6q1/7p/8/5P2/3k1BP1/6K1/4R3 b - - acd 58; acs 507; bm Qb2+; c3 "Qf6"; ce 0; pm Qb2+; pv Qb2+ Re2 Qc1 Re5 Qd2+ Kg1 Kc4 Re6 Kb4 Rxh6 Qc1+ Kh2 Qc2+ Bg2 Qf5 Bf1 Qc2+ Kh3 Qf5+ Kh2;
8/8/5q1p/4R3/5P2/3k1BP1/6K1/8 b - - acd 62; acs 495; bm Qb6; c3 "Qb6"; ce 0; pm Qb6; pv Qb6 Be2+ Kd4 Bf3 Qb2+ Kh3 Qa3 Be2 Qb2 g4 Qc1 Kg3 Qe1+ Kf3 Qh1+ Kg3 Qg1+ Kf3 Qh1+;
8/8/1q5p/4R3/5PP1/3k1B2/6K1/8 b - - acd 57; acs 242; bm Kc3; c3 "Kc4"; ce 0; pm Kc3; pv Kc3 f5 Qd6 Re3+ Kc2 Re6 Qf4 Re4 Qg5 Kg3 Kd3 Re6 Kc3 Kh3 Kd3 Kg3;
8/8/1q5p/4R3/2k2PP1/8/6K1/3B4 b - - acd 56; acs 501; bm Qb2+; c3 "Qd6"; ce 0; pm Qb2+; pv Qb2+ Kg3 Qc1 Bf3 Qg1+ Bg2 Kc3 Re4 Qd1 Bf3 Qg1+ Bg2;
8/8/3q3p/4R3/2k2PP1/8/4B1K1/8 b - - acd 63; acs 513; bm Kd4; c3 "Kd4"; ce 0; pm Kd4; pv Kd4 Bf3 Qb6 Re2 Kc3 Be4 Qf6 Kg3 Qd4 Kg2 Qf6;
8/8/3q3p/4R3/3k1PP1/8/6K1/3B4 b - - acd 61; acs 494; bm Qf6; c3 "Qf8"; ce 0; pm Qf6; pv Qf6 Bc2 Qxf4 Re4+ Qxe4+ Bxe4;
5q2/8/7p/4R3/3k1PP1/6K1/8/3B4 b - - acd 57; acs 449; bm Qd6; c3 "Qa3+"; ce 0; pm Qd6; pv Qd6 Bf3 Kc3 Re2 Qd4 Re6 Qg1+ Bg2 Qd4 f5 Qd3+ Bf3 h5 f6 h4+ Kf4 Qd2+ Kf5 Qf2 Kf4 Qd2+;
8/8/7p/4R3/3k1PP1/q7/5K2/3B4 b - - acd 61; acs 483; bm Qc1; c3 "Qc1"; ce 0; pm Qc1; pv Qc1 Bf3 Qxf4 Re4+ Qxe4 Bxe4;
8/8/7p/4R3/3k1PP1/5B2/5K2/2q5 b - - acd 65; acs 289; bm Qxf4; c3 "Qxf4"; ce 0; pm Qxf4; pv Qxf4 Re4+ Qxe4 Bxe4;
8/8/7p/8/3kRqP1/5B2/5K2/8 b - - acd 100; acs 480; bm Qxe4; c3 "Qxe4"; ce 0; pm Qxe4; pv Qxe4 Bxe4;
8/8/7p/8/3kB1P1/8/5K2/8 b - - acd 58; acs 442; bm Kxe4; c3 "Kxe4"; ce 0; pm Kxe4; pv Kxe4 Kg3 Ke5 Kh4 Ke4 Kh5 Kf4 Kxh6 Kxg4 Kg6 Kf4 Kf6 Ke4 Ke7 Kd4 Ke6 Ke4 Kd6 Kd4 Kc7 Kc3 Kc6 Kc4 Kd6 Kd4;
8/8/7p/8/4k1P1/6K1/8/8 b - - acd 57; acs 366; bm Ke5; c3 "h5"; ce 0; pm Ke5; pv Ke5 Kf3 Ke6 Ke4 Kf6 Kf4 Kg6 Ke4 Kg5 Kf3 Kf6 Kf4;
8/8/8/7P/4k3/6K1/8/8 b - - acd 59; acs 492; bm Kf5; c3 "Ke5"; ce 0; pm Kf5; pv Kf5 Kh4 Kf6 Kg4 Kg7 Kg5 Kg8 Kg6 Kf8 h6 Kg8 Kf6 Kh7 Ke5 Kxh6 Kf6 Kh7 Kf7 Kh6 Kf6;
8/8/8/4k2P/6K1/8/8/8 b - - acd 60; acs 397; bm Kf6; c3 "Kf6"; ce 0; pm Kf6 {12} Ke6 {4}; pv Kf6 Kh4 Kf7 Kg4 Kf6; white_wins 0; black_wins 0; draws 16; 
8/8/5k1P/8/6K1/8/8/8 b - - acd 65; acs 394; bm Kg6; c3 "Kg6"; ce 0; pm Kg6 {50} Kf7 {14}; pv Kg6 Kf4 Kxh6 Ke5 Kg7 Kd5 Kf6 Kd6 Kf7 Kc7 Ke6 Kc6 Ke7 Kc7 Ke6; white_wins 0; black_wins 0; draws 64; 
8/8/6kP/8/8/6K1/8/8 b - - acd 91; acs 521; bm Kxh6; c3 "Kxh6"; ce 0; pm Kxh6 {6} Kf6 {1}; pv Kxh6 Kf4 Kh5 Kf5 Kh4 Ke5 Kg3 Ke4 Kg4 Kd4 Kf5 Kc4 Kg4 Kc5 Kf3 Kb6 Ke4 Kb5 Ke5 Ka4 Kd6 Kb5 Kd7 Kc5 Kc7 Kb5 Kd7; white_wins 0; black_wins 0; draws 8; 

[Dann Corbit]

It could be fruitful to explore Qa5 for this position:

[d]r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP1BPPP/R3K2R b KQkq -

But it will take a very long and deep analysis to reach a reasonable conclusion.

[Zenmastur]

It could be fruitful to explore Qa5 for this position:

[d]r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP1BPPP/R3K2R b KQkq -

But it will take a very long and deep analysis to reach a reasonable conclusion.

I think this is worse than the move played.

The only moves I see that could give advantage to either side are:

[d]1rb1r1k1/2q2pp1/pn1p3p/1p1pb3/3N3Q/P1P1BB2/1P2RPPP/3R2K1 w - - 7 22

When 22.h3 Bd7 23.Nc2 Nc4 24.Nb4 Nxe3 25.Rxe3 Qc4 26.Qxc4 bxc4
27.Rxd5 Bf4 28.Rxe8+ Rxe8 29.Kf1 Rb8 30.Ra5 Bc1 31.Rxa6 Bxb2 32.Rxd6 may give white a slight edge.

or

[d]1rb1r1k1/5pp1/1q1p3p/pp1pb3/7Q/P1P2B2/1PN1RPPP/3R2K1 w - - 0 24

When 24.Ne3 Be6 25.Bxd5 b4 26.axb4 Qb5 27.Rc2 axb4 28.g3 bxc3 29.bxc3 Qd7 30.Bxe6 Qxe6 31.c4 might give white a small and fleeting advantage. I'm much less sure about the second position.

I didn't analyze this to any great depth so either of these positions might be even on a deeper analysis. I don't think SF had any chances during this game.

Regards,

Zen

[Dann Corbit]

It is the black player who wants victory. The questions were about the play of Stockfish.

[Zenmastur]

It is the black player who wants victory. The questions were about the play of Stockfish.

Are you saying that white didn't want to win this game?

My point is that white had some chances, black didn't as far as I can tell. Black could have played better in a couple of positions, like move 21 and 23 but changing either of these moves won't give him an advantage. If black wanted to win then they should have selected a better opening line.

Regards,

Zen

[Dann Corbit]

It is the black player who wants victory. The questions were about the play of Stockfish.

Are you saying that white didn't want to win this game?

My point is that white had some chances, black didn't as far as I can tell. Black could have played better in a couple of positions, like move 21 and 23 but changing either of these moves won't give him an advantage. If black wanted to win then they should have selected a better opening line.

Regards,

Zen

I agree with all your points.
The original question was about whether or not black could have done better than a draw by a better choice of moves.

In my opinion, the variance would have had to have been really early (in the opening) because once out of book, I get a long string of zeros for 50 ply searches on the following moves.

[Dann Corbit]

To wit:
is there any moves stockfish could have played different to avoid draw?

Code: Select all

[Event "?"]
[Site "play.chessanytime.com"]
[Date "2015.4.27"]
[Time "6:05:20"]
[Round "?"]
[White "Petrarque"]
[Black "Stockfish Dev version April 18th 4 cores 50 contempt"] 

...

Of course, a mathematician would simply have replied:
"Sure, there are lots of ways that Stockfish could easily lose the game, including resigning."

While I am a mathematician, I managed to bite my tongue.