Laskos wrote:bob wrote:Laskos wrote:Therefore Nalimov shows a draw (if claimed).
For me Nalimov shows the knight being captures on move 46:
White(1): 8/4K3/8/4B1n1/B7/8/5k2/8 w - - 0 1
White(1): egtb
1. Bf4! Nh3 2. Bh6 Ng1! 3. Kf6 Nf3! 4. Kf5! Ne1 5. Bf8 Nd3 6. Ke4!
Ne1! 7. Bc5+ Kg3! 8. Bb6 Ng2! 9. Bd1! Ne1 10. Ke3! Ng2+! 11. Kd2!
Kf4! 12. Ke2! Kf5! 13. Bc2+! Ke6! 14. Bb3+! Kf5 15. Kf3! Nh4+! 16.
Kf2! Ng6! 17. Bc2+! Kf6! 18. Bd8+! Kf7! 19. Ke3! Ne7! 20. Bb3+! Ke8!
21. Bc7! Kd7! 22. Bf4! Kc6! 23. Kd4! Nf5+ 24. Ke5! Nd6! 25. Bd5+!
Kd7! 26. Bg3! Ke7! 27. Bb3! Nf7+! 28. Ke4! Nd6+! 29. Kd5! Ne8! 30.
Ke5! Nd6! 31. Bh4+! Kd7! 32. Kd5! Nf7! 33. Ba4+! Kc7! 34. Kc5! Kc8!
35. Bg3 Kd8! 36. Kd5! Ke7! 37. Bh4+! Kf8! 38. Bf6 Nh6 39. Ke6! Ng4
40. Bb2! Nh6! 41. Bd1! Ng8! 42. Bh5! Nh6! 43. Kf6! Ng8+! 44. Kg6!
Ke7 45. Kg7! Nf6 46. Bxf6+! Ke6! 47. Bg6 Kd5 48. Kf7! Kc5 49. Be4
Kb4 50. Bd3! Ka3 51. Bc3 Ka2 52. Bc4+ Kb1 53. Bb3! Kc1 54. Ke7 Kb1
55. Kd6! Kc1 56. Kc5! Kb1 57. Kb4! Kc1 58. Ka3! Kb1 59. Bd2! Ka1
60. Bg8 Kb1 61. Bh7+! Ka1 62. Bc3#
The moves with ! following them are singular best moves and any other move extends the mate in 62 further.
Can you try an engine with 3-4-5-men Nalimov as white against Stockfish with 3-4-5-men Syzygy as black? My guess is that the losing side (black) doesn't defend optimally using Nalimov (or not using egtb at all).
Kai, my tests show you are correct. Although Crafty shows mate and it will score a mate against another Nalimov engine, it does not covert the win against a Syzygy engine - tried both Stockfish and Komodo. Conversely , both Stockfish and Komodo will score the win against Crafty and against each other.
[pgn][Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.02.14"]
[Round "-"]
[White "Stockfish 7"]
[Black "Komodo 9.3"]
[Result "1-0"]
[TimeControl "15+0"]
[FEN "8/4K3/8/4B1n1/B7/8/5k2/8 w - - 0 1"]
[SetUp "1"]
{--------------
. . . . . . . .
. . . . K . . .
. . . . . . . .
. . . . B . n .
B . . . . . . .
. . . . . . . .
. . . . . k . .
. . . . . . . .
white to play
--------------}
1. Bf4 {+123.53/1} Ne4 {-80.00/18 0.3} 2. Bc6 {+123.53/1 0.1} Nc3
{+0.00/5 0.1} 3. Be5 {+123.53/1 0.1} Nb1 {+0.00/5 0.1} 4. Ke6
{+123.53/17 0.2} Nd2 {+0.00/5 0.1} 5. Bd4+ {+123.53/1 0.1} Kg3
{+0.00/5 0.1} 6. Kf5 {+123.53/1 0.1} Nf3 {+0.00/5 0.1} 7. Bb6
{+123.53/1 0.1} Nh4+ {+0.00/5 0.1} 8. Ke4 {+123.53/1 0.1} Ng2 {+0.00/5 0.1}
9. Bd5 {+123.53/20 0.2} Nh4 {+0.00/5 0.1} 10. Bc7+ {+123.53/24 0.2} Kf2
{+0.00/5 0.1} 11. Kd3 {+123.53/1 0.1} Ng2 {+0.00/5 0.1} 12. Kd2
{+123.53/1 0.1} Nh4 {+0.00/5 0.1} 13. Bb6+ {+123.53/1 0.1} Kg3
{+0.00/5 0.1} 14. Ke2 {+123.53/1 0.1} Kf4 {+0.00/5 0.1} 15. Bc7+
{+123.53/21 0.3} Kf5 {+0.00/5 0.1} 16. Ke3 {+123.53/22 0.1} Ng6
{+0.00/5 0.1} 17. Be4+ {+123.53/21 0.3} Kf6 {+0.00/5 0.1} 18. Bb1
{+123.53/1 0.1} Ne7 {-80.00/19 0.4} 19. Ke4 {+123.53/1 0.1} Ke6
{+0.00/5 0.1} 20. Be5 {+123.53/1 0.1} Nc6 {+0.00/5 0.1} 21. Bh2
{+123.53/21 0.3} Ne7 {-80.00/21 0.4} 22. Ba2+ {+123.53/1 0.1} Kd7
{+0.00/5 0.1} 23. Bf7 {+123.53/1 0.1} Nc8 {+0.00/5 0.1} 24. Ke5
{+123.53/21 0.3} Nd6 {+0.00/5 0.1} 25. Bb3 {+123.53/1 0.1} Kc6
{+0.00/5 0.1} 26. Bd5+ {+123.53/1 0.1} Kd7 {+0.00/5 0.1} 27. Bg3
{+123.53/1 0.1} Ke7 {+0.00/5 0.1} 28. Bb3 {+123.53/1 0.1} Nf7+
{+0.00/5 0.1} 29. Ke4 {+123.53/1 0.1} Nd6+ {+0.00/5 0.1} 30. Kd5
{+123.53/1 0.1} Nf5 {-80.00/18 0.2} 31. Be1 {+123.53/1 0.1} Kf6
{-80.00/17 0.2} 32. Bc3+ {+123.53/1 0.1} Kg6 {+0.00/5 0.1} 33. Bc2
{+123.53/1 0.1} Kg5 {+0.00/5 0.1} 34. Ke5 {+123.53/1 0.1} Nh6 {+0.00/5 0.1}
35. Bd2+ {+123.53/25 1.5} Kh5 {+0.00/5 0.1} 36. Bd1+ {+123.53/22 1.0} Kg6
{+0.00/5 0.1} 37. Ke6 {+123.53/1 0.1} Ng8 {+0.00/5 0.1} 38. Ba4
{+123.53/21 1.7} Nh6 {-80.00/21 0.7} 39. Be3 {+123.53/1 0.1} Ng4
{-80.00/17 0.2} 40. Be8+ {+123.53/1 0.1} Kh7 {+0.00/5 0.1} 41. Bc5
{+123.53/20 3} Kg7 {+0.00/5 0.2} 42. Bd4+ {+123.53/1 0.1} Kh7 {+0.00/5 0.1}
43. Bh5 {+123.53/1 0.1} Nh6 {+0.00/5 0.1} 44. Kf6 {+123.53/1 0.1} Ng8+
{+0.00/5 0.1} 45. Kg5 {+123.53/1 0.1} Ne7 {+0.00/5 0.1} 46. Bf3
{+123.53/1 0.1} Kg8 {+0.00/5 0.1} 47. Kf6 {+123.53/1 0.1} Nc8 {+0.00/5 0.1}
48. Bc5 {+123.53/1 0.1} Kh7 {-99.68/19 0.1} 49. Bg4 {+99.85/37 0.3} Kh6
{-99.86/21 0.1} 50. Bxc8 {+99.87/1 0.1} Kh5 {-99.88/22 0.1} 51. Bf2
{+99.89/39 0.3} Kh6 {+0.00/5 0.1} 52. Bg4 {+99.91/44 0.1} Kh7 {+0.00/5 0.1}
53. Kf7 {+99.93/127 0.2} Kh6 {-99.94/99 0.1} 54. Be3+ {+99.95/127 0.1} Kh7
{+0.00/5 0.1} 55. Bf5+ {+99.97/127 0.1} Kh8 {+0.00/5 0.1} 56. Bd4#
{+99.99/127 0.1}
{Xboard adjudication: Checkmate} 1-0[/pgn]
[pgn][Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.02.14"]
[Round "-"]
[White "Crafty v25.0.1"]
[Black "Crafty v25.0.1"]
[Result "1-0"]
[TimeControl "15+0"]
[FEN "8/4K3/8/4B1n1/B7/8/5k2/8 w - - 0 1"]
[SetUp "1"]
{--------------
. . . . . . . .
. . . . K . . .
. . . . . . . .
. . . . B . n .
B . . . . . . .
. . . . . . . .
. . . . . k . .
. . . . . . . .
white to play
--------------}
1. Bf4 {+326.44/17} Nh3 {+326.45/17 0.1} 2. Bh6 {+326.46/17 0.1} Ng1
{+326.47/17 0.1} 3. Kf6 {+326.48/17 0.1} Nf3 {+326.49/17 0.1} 4. Kf5
{+326.50/17 0.1} Ne1 {+326.51/17 0.1} 5. Bg5 {+326.52/17 0.1} Ng2
{+326.53/17 0.1} 6. Bd8 {+326.54/17 0.1} Kf3 {+326.55/17 0.1} 7. Bc6+
{+326.56/17 0.1} Kg3 {+326.57/17 0.1} 8. Bc7+ {+326.58/17 0.1} Kf2
{+326.59/17 0.1} 9. Be4 {+326.60/17 0.1} Ne1 {+326.61/17 0.1} 10. Bb6+
{+326.62/17 0.1} Kg3 {+326.63/17 0.1} 11. Bd5 {+326.64/17 0.1} Ng2
{+326.65/17 0.1} 12. Kg5 {+326.66/17 0.1} Ne1 {+326.67/17 0.1} 13. Bc7+
{+326.68/17 0.1} Kf2 {+326.69/17 0.1} 14. Kg4 {+326.70/17 0.1} Ke3
{+326.71/17 0.1} 15. Bb6+ {+326.72/17 0.1} Kd3 {+326.73/17 0.1} 16. Bf7
{+326.74/17 0.1} Nc2 {+326.75/17 0.1} 17. Bg6+ {+326.76/17 0.1} Kc3
{+326.77/17 0.1} 18. Ba5+ {+326.78/17 0.1} Kb3 {+326.79/17 0.1} 19. Kf4
{+326.80/17 0.1} Nb4 {+326.81/17 0.1} 20. Bf7+ {+326.82/17 0.1} Ka4
{+326.83/17 0.1} 21. Bb6 {+326.84/17 0.1} Kb5 {+326.85/17 0.1} 22. Be3
{+326.86/17 0.1} Kc6 {+326.87/17 0.1} 23. Ke5 {+326.88/17 0.1} Kb5
{+326.89/17 0.1} 24. Bg1 {+326.90/17 0.1} Nd3+ {+326.91/17 0.1} 25. Kd4
{+326.92/17 0.1} Nc5 {+326.93/17 0.1} 26. Bf2 {+326.94/17 0.1} Kc6
{+326.95/17 0.1} 27. Bd5+ {+326.96/17 0.1} Kb5 {+326.97/17 0.1} 28. Bf3
{+326.98/17 0.1} Nd7 {+326.99/17 0.1} 29. Bg3 {+327.00/17 0.1} Nf6
{+327.01/17 0.1} 30. Bd1 {+327.02/17 0.1} Nd7 {+327.03/17 0.1} 31. Bh5
{+327.04/17 0.1} Kb6 {+327.05/17 0.1} 32. Kc4 {+327.06/17 0.1} Nf6
{+327.07/17 0.1} 33. Bf3 {+327.08/17 0.1} Ng8 {+327.09/17 0.1} 34. Bh4
{+327.10/17 0.1} Kc7 {+327.11/17 0.1} 35. Kd5 {+327.12/17 0.1} Kd7
{+327.13/17 0.1} 36. Bg4+ {+327.14/17 0.1} Ke8 {+327.15/17 0.1} 37. Ke6
{+327.16/17 0.1} Kf8 {+327.17/17 0.1} 38. Bg5 {+327.18/17 0.1} Kg7
{+327.19/17 0.1} 39. Bh5 {+327.20/17 0.1} Kf8 {+327.21/17 0.1} 40. Bf4
{+327.22/17 0.1} Kg7 {+327.23/17 0.1} 41. Be5+ {+327.24/17 0.1} Kf8
{+327.25/17 0.1} 42. Bb2 {+327.26/17 0.1} Nh6 {+327.27/17 0.1} 43. Kf6
{+327.28/17 0.1} Ng8+ {+327.29/17 0.1} 44. Kg6 {+327.30/17 0.1} Ke7
{+327.31/17 0.1} 45. Kg7 {+327.32/17 0.1} Kd6 {+327.33/17 0.1} 46. Kxg8
{+327.34/17 0.1} Kd5 {+327.35/17 0.1} 47. Kf7 {+327.36/17 0.1} Ke4
{+327.37/17 0.1} 48. Ke6 {+327.38/17 0.1} Kd3 {+327.39/17 0.1} 49. Bg6+
{+327.40/17 0.1} Ke3 {+327.41/17 0.1} 50. Ke5 {+327.42/17 0.1} Kf3
{+327.43/17 0.1} 51. Be4+ {+327.44/17 0.1} Ke3 {+327.45/17 0.1} 52. Bc1+
{+327.46/17 0.1} Ke2 {+327.47/17 0.1} 53. Kf4 {+327.48/17 0.1} Kd1
{+327.49/17 0.1} 54. Be3 {+327.50/17 0.1} Ke2 {+327.51/17 0.1} 55. Bf5
{+327.52/17 0.1} Ke1 {+327.53/17 0.1} 56. Bg4 {+327.54/17 0.1} Kf1
{+327.55/10 0.1} 57. Kg3 {+327.56/15 0.1} Ke1 {+327.57/10 0.1} 58. Bh6
{+327.58/13 0.1} Kf1 {+327.59/10 0.1} 59. Bd2 {+327.60/11 0.1} Kg1
{+327.61/10 0.1} 60. Bh3 {+327.62/9 0.1} Kh1 {+327.63/10 0.1} 61. Bg2+
{+327.64/7 0.1} Kg1 {+327.65/10 0.1} 62. Be3# {+327.66/5 0.1}
{Xboard adjudication: Checkmate} 1-0[/pgn]
[pgn][Event "Computer Chess Game"]
[Site "Mac-Pro.local"]
[Date "2016.02.14"]
[Round "-"]
[White "Crafty v25.0.1"]
[Black "Komodo 9.3"]
[Result "1/2-1/2"]
[TimeControl "15+0"]
[FEN "8/4K3/8/4B1n1/B7/8/5k2/8 w - - 0 1"]
[SetUp "1"]
{--------------
. . . . . . . .
. . . . K . . .
. . . . . . . .
. . . . B . n .
B . . . . . . .
. . . . . . . .
. . . . . k . .
. . . . . . . .
white to play
--------------}
1. Bf4 {+326.44/17} Ne4 {-80.00/18 0.3} 2. Bc6 {+326.46/17 0.1} Nc3
{+0.00/5 0.1} 3. Be5 {+326.48/17 0.1} Nb1 {+0.00/5 0.1} 4. Ke6
{+326.50/17 0.1} Nd2 {+0.00/5 0.1} 5. Bd4+ {+326.52/17 0.1} Kg3
{+0.00/5 0.1} 6. Kf5 {+326.54/17 0.1} Nf3 {+0.00/5 0.1} 7. Bb6
{+326.56/17 0.1} Nh4+ {+0.00/5 0.1} 8. Ke4 {+326.58/17 0.1} Ng2
{+0.00/5 0.1} 9. Bd5 {+326.60/17 0.1} Nh4 {+0.00/5 0.1} 10. Bc7+
{+326.62/17 0.1} Kf2 {+0.00/5 0.1} 11. Kd3 {+326.64/17 0.1} Ng2
{+0.00/5 0.1} 12. Kd2 {+326.66/17 0.1} Nh4 {+0.00/5 0.1} 13. Bb6+
{+326.68/17 0.1} Kg3 {+0.00/5 0.1} 14. Ke2 {+326.70/17 0.1} Kf4
{+0.00/5 0.1} 15. Bc7+ {+326.72/17 0.1} Kf5 {+0.00/5 0.1} 16. Bb3
{+326.74/17 0.1} Ng6 {+0.00/5 0.1} 17. Bc2+ {+326.76/17 0.1} Kf6
{+0.00/5 0.1} 18. Bd8+ {+326.78/17 0.1} Kf7 {+0.00/5 0.1} 19. Ke3
{+326.80/17 0.1} Ne7 {+0.00/5 0.1} 20. Bb3+ {+326.82/17 0.1} Ke8
{+0.00/5 0.1} 21. Bc7 {+326.84/17 0.1} Kd7 {+0.00/5 0.1} 22. Bf4
{+326.86/17 0.1} Kc6 {+0.00/5 0.1} 23. Kd4 {+326.88/17 0.1} Kd7
{+0.00/5 0.1} 24. Bh2 {+326.90/17 0.1} Nf5+ {+0.00/5 0.1} 25. Ke5
{+326.92/17 0.1} Nd6 {+0.00/5 0.1} 26. Bg3 {+326.94/17 0.1} Kc6
{+0.00/5 0.1} 27. Bd5+ {+326.96/17 0.1} Kd7 {+0.00/5 0.1} 28. Bf3
{+326.98/17 0.1} Nb5 {+0.00/5 0.1} 29. Bf2 {+327.00/17 0.1} Nc3
{+0.00/5 0.1} 30. Bh5 {+327.02/17 0.1} Nb5 {+0.00/5 0.1} 31. Bd1
{+327.04/17 0.1} Kc7 {+0.00/5 0.1} 32. Ke6 {+327.06/17 0.1} Nc3
{+0.00/5 0.1} 33. Bf3 {+327.08/17 0.1} Na2 {+0.00/5 0.1} 34. Be1
{+327.10/17 0.1} Kb6 {+0.00/5 0.1} 35. Kd5 {+327.12/17 0.1} Kb5
{+0.00/5 0.1} 36. Be2+ {+327.14/17 0.1} Ka4 {+0.00/5 0.1} 37. Kc4
{+327.16/17 0.1} Ka3 {+0.00/5 0.1} 38. Bd1 {+327.18/17 0.1} Kb2
{+0.00/5 0.1} 39. Bd2 {+327.20/17 0.1} Ka3 {-0.48/18 0.2} 40. Bh6
{+327.22/17 0.1} Kb2 {+0.00/5 0.1} 41. Bg7+ {+327.24/17 0.1} Kb1
{-0.48/16 0.7} 42. Kb3 {+327.30/17 0.1} Nc1+ {+0.00/5 0.1} 43. Kc3
{+327.32/17 0.1} Na2+ {+0.00/5 0.1} 44. Kd2 {+327.34/17 0.1} Nb4
{+0.00/5 0.1} 45. Bf3 {+327.36/17 0.1} Na6 {+0.00/5 0.1} 46. Be4+
{+327.40/17 0.1} Ka2 {+0.00/5 0.1} 47. Kc3 {+327.42/17 0.1} Nc5
{+0.00/5 0.1} 48. Bc6 {+327.44/17 0.1} Kb1 {+0.00/5 0.1} 49. Bd4
{+327.46/17 0.1} Ne6 {+0.00/5 0.1} 50. Be3 {+327.54/17 0.1} Nc7
{-0.46/99 0.1}
{Draw by fifty-move rule} 1/2-1/2[/pgn]