Interesting endgame position.

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Robert Flesher
Posts: 1292
Joined: Tue Aug 18, 2009 3:06 am

Interesting endgame position.

Post by Robert Flesher »

When running a test of the new Rebel 17 vs Dragon 3.3. ( I test without tablebases). An interesting endgame was reached at move 43 with black to move. [png] [Event "TINCAN, Blitz 5.0min+2.0sec"]
[Site "TINCAN"]
[Date "2026.10.27"]
[Round "7"]
[White "Rebel-17.0-avx2"]
[Black "Dragon 3.3 by Komodo Chess, 64-bit"]
[Result "1/2-1/2"]
[ECO "E04"]
[Annotator "0.66;0.27"]
[PlyCount "187"]
[TimeControl "300+2"]

{12th Gen Intel(R) Core(TM) i5-12400F 2496 MHz W=37.2 plies; 10,647kN/s B=38.2 plies; 11,975kN/s} 1. d4 {0.66/27 11 Both last book move} Nf6 {0.27/25 6} 2. c4 {0.54/29 8} e6 {0.19/27 11} 3. g3 {0.66/30 17} d5 {0.18/27 6} 4. Bg2 {0.71/27 7} dxc4 {0.21/27 6 (Be7)} 5. Nf3 {1.04/25 10} a6 {0.19/28 27 (Be7)} 6. O-O {0.70/27 7} Nc6 {0.25/28 11} 7. e3 {0.86/29 7 (a4)} Bd7 {0.22/26 7} 8. Qe2 {1.03/28 7} b5 {0.28/27 7} 9. b3 {0.82/27 8} cxb3 {0.37/28 8} 10. axb3 {1.19/28 7} Bd6 {0.22/30 23} 11. Bb2 {0.69/28 13} O-O {0.26/27 6} 12. Rc1 {1.04/27 8} Nd5 {0.24/29 33} 13. Nc3 {0.94/26 6} Qe7 {0.18/28 20} 14. Ne4 {0.79/27 6} a5 {0.34/28 20 (Rfd8)} 15. Ne5 {0.85/24 6} Ncb4 {0.40/29 8} 16. Nxd7 {1.11/30 25} Qxd7 {0.32/29 6} 17. Nc5 {0.89/27 5} Bxc5 {0.35/28 9} 18. dxc5 {0.87/27 5} c6 {0.35/28 4} 19. e4 {0.65/27 6} Nc7 {0.24/30 5} 20. Rd1 {1.21/28 6} Qe7 {0.26/31 6} 21. Rd6 {0.68/30 19 (Be5)} Ne8 {0.32/30 11} 22. Rd2 {0.78/32 8} e5 {0.25/29 5} 23. Qh5 {0.77/33 6} Qxc5 {0.24/30 4} 24. Qxe5 {1.02/29 8} Qxe5 {0.25/28 5} 25. Bxe5 {1.10/29 6} a4 {0.23/29 10 (h5)} 26. Bf4 {1.11/29 7 (bxa4)} h5 {0.25/28 9 (Ra6)} 27. Ra3 {1.79/30 12} f5 {0.27/29 4} 28. exf5 {1.54/29 4} Rxf5 {0.21/30 5} 29. bxa4 {1.14/26 4} bxa4 {0.25/30 4 (g5)} 30. Rd4 {1.52/31 4} Nd5 {0.24/31 4} 31. Bd2 {1.34/30 7} Nef6 {0.22/33 12} 32. Raxa4 {1.28/31 11 (Rdxa4)} Rxa4 {0.18/29 7} 33. Rxa4 {1.66/29 6} Ng4 {0.22/26 4} 34. f4 {1.18/25 3} Rf8 {0.24/27 3 (g6)} 35. Be4 {1.60/25 4} h4 {0.12/25 4 (Nge3)} 36. gxh4 {1.54/23 4} Nb6 {0.18/26 3} 37. Ra7 {1.66/25 3} Nd5 {0.17/28 3} 38. h3 {1.91/28 5} Nge3 {0.17/27 3 (Nh6)} 39. Ra6 {1.68/27 3} Nc7 {0.06/30 13 (Nd1)} 40. Rxc6 {2.85/35 5 (Ra4)} Rxf4 {0.07/40 2} 41. Bg2 {3.32/43 3} Nxg2 {0.07/46 3} 42. Bxf4 {3.44/45 4} Nxf4 {0.07/51 2} 43. Rxc7 {3.32/49 3} Nxh3+ {0.07/52 2} 44. Kh2 {3.58/47 3 (Kg2)} Nf4 {0.07/52 3} 45. Rc5 {3.47/51 4 (Kg3)} Ne6 {0.07/52 2} 46. Ra5 {3.24/48 6 (Rf5)} Nf8 {0.07/51 2 (Kh7)} 47. Ra8 {5.47/50 3 (Kg3)} Kf7 {0.07/55 2} 48. h5 {5.45/47 3 (Ra7+)} Ne6 {0.07/55 3 (Nh7)} 49. Kh3 {5.44/51 3 (Kg3)} Nf4+ {0.07/52 2 (Kf6)} 50. Kg4 {5.43/46 3} Ne6 {0.07/55 2} 51. Ra7+ {5.41/48 4} Kg8 {0.07/56 2} 52. Rd7 {5.42/53 3 (Ra5)} Nf8 {0.07/55 3} 53. Rd8 {5.41/51 4 (Rc7)} Kf7 {0.07/56 10} 54. Rc8 {5.41/52 3 (Rd5)} Kg8 {0.07/56 3} 55. Kg5 {5.41/53 3 (Kg3)} Kf7 {0.07/56 4} 56. Rc7+ {5.41/52 3 (Kf4)} Kg8 {0.07/58 2} 57. Kf5 {5.41/37 3 (Kh4)} Nh7 {0.07/56 3} 58. Rc5 {5.41/45 3 (Rc6)} Nf8 {0.07/53 10} 59. Rc8 {5.39/45 3} Kf7 {0.07/60 3} 60. Kg5 {5.39/47 3} Nh7+ {0.07/51 5} 61. Kg4 {5.40/50 2 (Kh4)} Nf6+ {0.07/52 5 (Nf8)} 62. Kh4 {5.39/52 3 (Kg5)} Nh7 {0.07/57 1} 63. Rd8 {5.39/52 5 (Ra8)} Nf8 {0.07/55 2} 64. Rd1 {5.41/51 3 (Kg4)} Ke6 {0.07/51 3 (Ne6)} 65. Kg4 {5.39/53 3 (Re1+)} Kf7 {0.07/50 3 (Nh7)} 66. Rd8 {5.39/53 6 (Rd5)} Ne6 {0.07/44 2} 67. Rd7+ {5.39/51 3} Kg8 {0.07/44 1} 68. Rd5 {5.38/41 2 (Ra7)} Nf8 {0.07/48 3} 69. Rd6 {5.39/47 2 (Ra5)} Kf7 {0.07/50 2 (Nh7)} 70. Rc6 {5.39/52 2 (Rb6)} Ne6 {0.07/47 2 (Kg8)} 71. Rb6 {5.39/51 3} Nf8 {0.07/42 3 (Kf6)} 72. Ra6 {5.38/46 3 (Rb7+)} Ne6 {0.07/49 2 (Kg8)} 73. Kf5 {5.38/45 2 (Kh4)} Nf8 {0.07/42 2 (Nd4+)} 74. Rc6 {5.37/38 3 (Ra7+)} Kg8 {0.07/42 3} 75. Rc2 {5.37/39 2 (Rc8)} Kf7 {0.07/41 2 (Nh7)} 76. Kg5 {5.37/46 10 (Rc7+)} Ne6+ {0.07/38 2 (Nh7+)} 77. Kg4 {5.38/44 4 (Kh4)} Kg8 {0.07/41 3} 78. Rd2 {5.38/41 4 (Rf2)} Nf8 {0.07/38 2} 79. Kg5 {5.37/40 5 (Rg2)} Ne6+ {0.07/34 2 (Kf7)} 80. Kh4 {5.39/39 5} Nf8 {0.07/36 3} 81. Rd1 {5.36/37 7 (Rg2)} Nh7 {0.07/32 1 (Kf7)} 82. Rd8+ {5.33/36 3 (Rg1)} Kf7 {0.06/31 2} 83. Rc8 {5.30/33 2} Nf6 {0.03/28 3 (Nf8)} 84. Rb8 {5.26/31 4 (Rc7+)} Nh7 {0.04/32 2} 85. Kg4 {5.05/29 4 (Ra8)} Nf6+ {0.07/32 1 (Nf8)} 86. Kg5 {4.49/32 2} Nh7+ {0.03/34 3 (Ne4+)} 87. Kf5 {4.28/29 3 (Kf4)} Nf8 {0.02/27 1} 88. Rb7+ {4.87/32 3} Kg8 {0.04/29 2} 89. Ra7 {4.47/37 4} Nh7 {0.00/27 2} 90. Ra8+ {4.26/38 3 (h6)} Kf7 {0.00/25 2} 91. Ra1 {4.46/34 2 (h6)} Nf8 {0.00/32 1 (Kg8)} 92. Rg1 {4.31/37 2} Nh7 {0.00/37 1} 93. Rc1 {4.22/36 3 (Rd1)} Nf8 {0.00/40 2 (Kg8)} 94. Rc7+ {4.21/41 3 Draw accepted} 1/2-1/2 [/pgn]

Rebel and some other very strong engines believe it is winning. The top engines know that black can draw. Is this a pruning issue ?
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AdminX
Posts: 6411
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: Interesting endgame position.

Post by AdminX »

[pgn]
[Event "TINCAN, Blitz 5.0min+2.0sec"]
[Site "TINCAN"]
[Date "2026.10.27"]
[Round "7"]
[White "Rebel-17.0-avx2"]
[Black "Dragon 3.3 by Komodo Chess, 64-bit"]
[Result "1/2-1/2"]
[ECO "E04"]
[Annotator "0.66;0.27"]
[PlyCount "187"]
[TimeControl "300+2"]

{12th Gen Intel(R) Core(TM) i5-12400F 2496 MHz W=37.2 plies; 10,647kN/s B=38.2 plies; 11,975kN/s} 1. d4 {0.66/27 11 Both last book move} Nf6 {0.27/25 6} 2. c4 {0.54/29 8} e6 {0.19/27 11} 3. g3 {0.66/30 17} d5 {0.18/27 6} 4. Bg2 {0.71/27 7} dxc4 {0.21/27 6 (Be7)} 5. Nf3 {1.04/25 10} a6 {0.19/28 27 (Be7)} 6. O-O {0.70/27 7} Nc6 {0.25/28 11} 7. e3 {0.86/29 7 (a4)} Bd7 {0.22/26 7} 8. Qe2 {1.03/28 7} b5 {0.28/27 7} 9. b3 {0.82/27 8} cxb3 {0.37/28 8} 10. axb3 {1.19/28 7} Bd6 {0.22/30 23} 11. Bb2 {0.69/28 13} O-O {0.26/27 6} 12. Rc1 {1.04/27 8} Nd5 {0.24/29 33} 13. Nc3 {0.94/26 6} Qe7 {0.18/28 20} 14. Ne4 {0.79/27 6} a5 {0.34/28 20 (Rfd8)} 15. Ne5 {0.85/24 6} Ncb4 {0.40/29 8} 16. Nxd7 {1.11/30 25} Qxd7 {0.32/29 6} 17. Nc5 {0.89/27 5} Bxc5 {0.35/28 9} 18. dxc5 {0.87/27 5} c6 {0.35/28 4} 19. e4 {0.65/27 6} Nc7 {0.24/30 5} 20. Rd1 {1.21/28 6} Qe7 {0.26/31 6} 21. Rd6 {0.68/30 19 (Be5)} Ne8 {0.32/30 11} 22. Rd2 {0.78/32 8} e5 {0.25/29 5} 23. Qh5 {0.77/33 6} Qxc5 {0.24/30 4} 24. Qxe5 {1.02/29 8} Qxe5 {0.25/28 5} 25. Bxe5 {1.10/29 6} a4 {0.23/29 10 (h5)} 26. Bf4 {1.11/29 7 (bxa4)} h5 {0.25/28 9 (Ra6)} 27. Ra3 {1.79/30 12} f5 {0.27/29 4} 28. exf5 {1.54/29 4} Rxf5 {0.21/30 5} 29. bxa4 {1.14/26 4} bxa4 {0.25/30 4 (g5)} 30. Rd4 {1.52/31 4} Nd5 {0.24/31 4} 31. Bd2 {1.34/30 7} Nef6 {0.22/33 12} 32. Raxa4 {1.28/31 11 (Rdxa4)} Rxa4 {0.18/29 7} 33. Rxa4 {1.66/29 6} Ng4 {0.22/26 4} 34. f4 {1.18/25 3} Rf8 {0.24/27 3 (g6)} 35. Be4 {1.60/25 4} h4 {0.12/25 4 (Nge3)} 36. gxh4 {1.54/23 4} Nb6 {0.18/26 3} 37. Ra7 {1.66/25 3} Nd5 {0.17/28 3} 38. h3 {1.91/28 5} Nge3 {0.17/27 3 (Nh6)} 39. Ra6 {1.68/27 3} Nc7 {0.06/30 13 (Nd1)} 40. Rxc6 {2.85/35 5 (Ra4)} Rxf4 {0.07/40 2} 41. Bg2 {3.32/43 3} Nxg2 {0.07/46 3} 42. Bxf4 {3.44/45 4} Nxf4 {0.07/51 2} 43. Rxc7 {3.32/49 3} Nxh3+ {0.07/52 2} 44. Kh2 {3.58/47 3 (Kg2)} Nf4 {0.07/52 3} 45. Rc5 {3.47/51 4 (Kg3)} Ne6 {0.07/52 2} 46. Ra5 {3.24/48 6 (Rf5)} Nf8 {0.07/51 2 (Kh7)} 47. Ra8 {5.47/50 3 (Kg3)} Kf7 {0.07/55 2} 48. h5 {5.45/47 3 (Ra7+)} Ne6 {0.07/55 3 (Nh7)} 49. Kh3 {5.44/51 3 (Kg3)} Nf4+ {0.07/52 2 (Kf6)} 50. Kg4 {5.43/46 3} Ne6 {0.07/55 2} 51. Ra7+ {5.41/48 4} Kg8 {0.07/56 2} 52. Rd7 {5.42/53 3 (Ra5)} Nf8 {0.07/55 3} 53. Rd8 {5.41/51 4 (Rc7)} Kf7 {0.07/56 10} 54. Rc8 {5.41/52 3 (Rd5)} Kg8 {0.07/56 3} 55. Kg5 {5.41/53 3 (Kg3)} Kf7 {0.07/56 4} 56. Rc7+ {5.41/52 3 (Kf4)} Kg8 {0.07/58 2} 57. Kf5 {5.41/37 3 (Kh4)} Nh7 {0.07/56 3} 58. Rc5 {5.41/45 3 (Rc6)} Nf8 {0.07/53 10} 59. Rc8 {5.39/45 3} Kf7 {0.07/60 3} 60. Kg5 {5.39/47 3} Nh7+ {0.07/51 5} 61. Kg4 {5.40/50 2 (Kh4)} Nf6+ {0.07/52 5 (Nf8)} 62. Kh4 {5.39/52 3 (Kg5)} Nh7 {0.07/57 1} 63. Rd8 {5.39/52 5 (Ra8)} Nf8 {0.07/55 2} 64. Rd1 {5.41/51 3 (Kg4)} Ke6 {0.07/51 3 (Ne6)} 65. Kg4 {5.39/53 3 (Re1+)} Kf7 {0.07/50 3 (Nh7)} 66. Rd8 {5.39/53 6 (Rd5)} Ne6 {0.07/44 2} 67. Rd7+ {5.39/51 3} Kg8 {0.07/44 1} 68. Rd5 {5.38/41 2 (Ra7)} Nf8 {0.07/48 3} 69. Rd6 {5.39/47 2 (Ra5)} Kf7 {0.07/50 2 (Nh7)} 70. Rc6 {5.39/52 2 (Rb6)} Ne6 {0.07/47 2 (Kg8)} 71. Rb6 {5.39/51 3} Nf8 {0.07/42 3 (Kf6)} 72. Ra6 {5.38/46 3 (Rb7+)} Ne6 {0.07/49 2 (Kg8)} 73. Kf5 {5.38/45 2 (Kh4)} Nf8 {0.07/42 2 (Nd4+)} 74. Rc6 {5.37/38 3 (Ra7+)} Kg8 {0.07/42 3} 75. Rc2 {5.37/39 2 (Rc8)} Kf7 {0.07/41 2 (Nh7)} 76. Kg5 {5.37/46 10 (Rc7+)} Ne6+ {0.07/38 2 (Nh7+)} 77. Kg4 {5.38/44 4 (Kh4)} Kg8 {0.07/41 3} 78. Rd2 {5.38/41 4 (Rf2)} Nf8 {0.07/38 2} 79. Kg5 {5.37/40 5 (Rg2)} Ne6+ {0.07/34 2 (Kf7)} 80. Kh4 {5.39/39 5} Nf8 {0.07/36 3} 81. Rd1 {5.36/37 7 (Rg2)} Nh7 {0.07/32 1 (Kf7)} 82. Rd8+ {5.33/36 3 (Rg1)} Kf7 {0.06/31 2} 83. Rc8 {5.30/33 2} Nf6 {0.03/28 3 (Nf8)} 84. Rb8 {5.26/31 4 (Rc7+)} Nh7 {0.04/32 2} 85. Kg4 {5.05/29 4 (Ra8)} Nf6+ {0.07/32 1 (Nf8)} 86. Kg5 {4.49/32 2} Nh7+ {0.03/34 3 (Ne4+)} 87. Kf5 {4.28/29 3 (Kf4)} Nf8 {0.02/27 1} 88. Rb7+ {4.87/32 3} Kg8 {0.04/29 2} 89. Ra7 {4.47/37 4} Nh7 {0.00/27 2} 90. Ra8+ {4.26/38 3 (h6)} Kf7 {0.00/25 2} 91. Ra1 {4.46/34 2 (h6)} Nf8 {0.00/32 1 (Kg8)} 92. Rg1 {4.31/37 2} Nh7 {0.00/37 1} 93. Rc1 {4.22/36 3 (Rd1)} Nf8 {0.00/40 2 (Kg8)} 94. Rc7+ {4.21/41 3 Draw accepted} 1/2-1/2 [/pgn]
"Good decisions come from experience, and experience comes from bad decisions."
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Eelco de Groot
Posts: 4761
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Interesting endgame position.

Post by Eelco de Groot »

Robert Flesher wrote: ↑Tue Oct 27, 2026 8:17 pm When running a test of the new Rebel 17 vs Dragon 3.3. ( I test without tablebases). An interesting endgame was reached at move 43 with black to move. [pgn] [Event "TINCAN, Blitz 5.0min+2.0sec"]
[Site "TINCAN"]
[Date "2026.10.27"]
[Round "7"]
[White "Rebel-17.0-avx2"]
[Black "Dragon 3.3 by Komodo Chess, 64-bit"]
[Result "1/2-1/2"]
[ECO "E04"]
[Annotator "0.66;0.27"]
[PlyCount "187"]
[TimeControl "300+2"]

{12th Gen Intel(R) Core(TM) i5-12400F 2496 MHz W=37.2 plies; 10,647kN/s B=38.2 plies; 11,975kN/s} 1. d4 {0.66/27 11 Both last book move} Nf6 {0.27/25 6} 2. c4 {0.54/29 8} e6 {0.19/27 11} 3. g3 {0.66/30 17} d5 {0.18/27 6} 4. Bg2 {0.71/27 7} dxc4 {0.21/27 6 (Be7)} 5. Nf3 {1.04/25 10} a6 {0.19/28 27 (Be7)} 6. O-O {0.70/27 7} Nc6 {0.25/28 11} 7. e3 {0.86/29 7 (a4)} Bd7 {0.22/26 7} 8. Qe2 {1.03/28 7} b5 {0.28/27 7} 9. b3 {0.82/27 8} cxb3 {0.37/28 8} 10. axb3 {1.19/28 7} Bd6 {0.22/30 23} 11. Bb2 {0.69/28 13} O-O {0.26/27 6} 12. Rc1 {1.04/27 8} Nd5 {0.24/29 33} 13. Nc3 {0.94/26 6} Qe7 {0.18/28 20} 14. Ne4 {0.79/27 6} a5 {0.34/28 20 (Rfd8)} 15. Ne5 {0.85/24 6} Ncb4 {0.40/29 8} 16. Nxd7 {1.11/30 25} Qxd7 {0.32/29 6} 17. Nc5 {0.89/27 5} Bxc5 {0.35/28 9} 18. dxc5 {0.87/27 5} c6 {0.35/28 4} 19. e4 {0.65/27 6} Nc7 {0.24/30 5} 20. Rd1 {1.21/28 6} Qe7 {0.26/31 6} 21. Rd6 {0.68/30 19 (Be5)} Ne8 {0.32/30 11} 22. Rd2 {0.78/32 8} e5 {0.25/29 5} 23. Qh5 {0.77/33 6} Qxc5 {0.24/30 4} 24. Qxe5 {1.02/29 8} Qxe5 {0.25/28 5} 25. Bxe5 {1.10/29 6} a4 {0.23/29 10 (h5)} 26. Bf4 {1.11/29 7 (bxa4)} h5 {0.25/28 9 (Ra6)} 27. Ra3 {1.79/30 12} f5 {0.27/29 4} 28. exf5 {1.54/29 4} Rxf5 {0.21/30 5} 29. bxa4 {1.14/26 4} bxa4 {0.25/30 4 (g5)} 30. Rd4 {1.52/31 4} Nd5 {0.24/31 4} 31. Bd2 {1.34/30 7} Nef6 {0.22/33 12} 32. Raxa4 {1.28/31 11 (Rdxa4)} Rxa4 {0.18/29 7} 33. Rxa4 {1.66/29 6} Ng4 {0.22/26 4} 34. f4 {1.18/25 3} Rf8 {0.24/27 3 (g6)} 35. Be4 {1.60/25 4} h4 {0.12/25 4 (Nge3)} 36. gxh4 {1.54/23 4} Nb6 {0.18/26 3} 37. Ra7 {1.66/25 3} Nd5 {0.17/28 3} 38. h3 {1.91/28 5} Nge3 {0.17/27 3 (Nh6)} 39. Ra6 {1.68/27 3} Nc7 {0.06/30 13 (Nd1)} 40. Rxc6 {2.85/35 5 (Ra4)} Rxf4 {0.07/40 2} 41. Bg2 {3.32/43 3} Nxg2 {0.07/46 3} 42. Bxf4 {3.44/45 4} Nxf4 {0.07/51 2} 43. Rxc7 {3.32/49 3} Nxh3+ {0.07/52 2} 44. Kh2 {3.58/47 3 (Kg2)} Nf4 {0.07/52 3} 45. Rc5 {3.47/51 4 (Kg3)} Ne6 {0.07/52 2} 46. Ra5 {3.24/48 6 (Rf5)} Nf8 {0.07/51 2 (Kh7)} 47. Ra8 {5.47/50 3 (Kg3)} Kf7 {0.07/55 2} 48. h5 {5.45/47 3 (Ra7+)} Ne6 {0.07/55 3 (Nh7)} 49. Kh3 {5.44/51 3 (Kg3)} Nf4+ {0.07/52 2 (Kf6)} 50. Kg4 {5.43/46 3} Ne6 {0.07/55 2} 51. Ra7+ {5.41/48 4} Kg8 {0.07/56 2} 52. Rd7 {5.42/53 3 (Ra5)} Nf8 {0.07/55 3} 53. Rd8 {5.41/51 4 (Rc7)} Kf7 {0.07/56 10} 54. Rc8 {5.41/52 3 (Rd5)} Kg8 {0.07/56 3} 55. Kg5 {5.41/53 3 (Kg3)} Kf7 {0.07/56 4} 56. Rc7+ {5.41/52 3 (Kf4)} Kg8 {0.07/58 2} 57. Kf5 {5.41/37 3 (Kh4)} Nh7 {0.07/56 3} 58. Rc5 {5.41/45 3 (Rc6)} Nf8 {0.07/53 10} 59. Rc8 {5.39/45 3} Kf7 {0.07/60 3} 60. Kg5 {5.39/47 3} Nh7+ {0.07/51 5} 61. Kg4 {5.40/50 2 (Kh4)} Nf6+ {0.07/52 5 (Nf8)} 62. Kh4 {5.39/52 3 (Kg5)} Nh7 {0.07/57 1} 63. Rd8 {5.39/52 5 (Ra8)} Nf8 {0.07/55 2} 64. Rd1 {5.41/51 3 (Kg4)} Ke6 {0.07/51 3 (Ne6)} 65. Kg4 {5.39/53 3 (Re1+)} Kf7 {0.07/50 3 (Nh7)} 66. Rd8 {5.39/53 6 (Rd5)} Ne6 {0.07/44 2} 67. Rd7+ {5.39/51 3} Kg8 {0.07/44 1} 68. Rd5 {5.38/41 2 (Ra7)} Nf8 {0.07/48 3} 69. Rd6 {5.39/47 2 (Ra5)} Kf7 {0.07/50 2 (Nh7)} 70. Rc6 {5.39/52 2 (Rb6)} Ne6 {0.07/47 2 (Kg8)} 71. Rb6 {5.39/51 3} Nf8 {0.07/42 3 (Kf6)} 72. Ra6 {5.38/46 3 (Rb7+)} Ne6 {0.07/49 2 (Kg8)} 73. Kf5 {5.38/45 2 (Kh4)} Nf8 {0.07/42 2 (Nd4+)} 74. Rc6 {5.37/38 3 (Ra7+)} Kg8 {0.07/42 3} 75. Rc2 {5.37/39 2 (Rc8)} Kf7 {0.07/41 2 (Nh7)} 76. Kg5 {5.37/46 10 (Rc7+)} Ne6+ {0.07/38 2 (Nh7+)} 77. Kg4 {5.38/44 4 (Kh4)} Kg8 {0.07/41 3} 78. Rd2 {5.38/41 4 (Rf2)} Nf8 {0.07/38 2} 79. Kg5 {5.37/40 5 (Rg2)} Ne6+ {0.07/34 2 (Kf7)} 80. Kh4 {5.39/39 5} Nf8 {0.07/36 3} 81. Rd1 {5.36/37 7 (Rg2)} Nh7 {0.07/32 1 (Kf7)} 82. Rd8+ {5.33/36 3 (Rg1)} Kf7 {0.06/31 2} 83. Rc8 {5.30/33 2} Nf6 {0.03/28 3 (Nf8)} 84. Rb8 {5.26/31 4 (Rc7+)} Nh7 {0.04/32 2} 85. Kg4 {5.05/29 4 (Ra8)} Nf6+ {0.07/32 1 (Nf8)} 86. Kg5 {4.49/32 2} Nh7+ {0.03/34 3 (Ne4+)} 87. Kf5 {4.28/29 3 (Kf4)} Nf8 {0.02/27 1} 88. Rb7+ {4.87/32 3} Kg8 {0.04/29 2} 89. Ra7 {4.47/37 4} Nh7 {0.00/27 2} 90. Ra8+ {4.26/38 3 (h6)} Kf7 {0.00/25 2} 91. Ra1 {4.46/34 2 (h6)} Nf8 {0.00/32 1 (Kg8)} 92. Rg1 {4.31/37 2} Nh7 {0.00/37 1} 93. Rc1 {4.22/36 3 (Rd1)} Nf8 {0.00/40 2 (Kg8)} 94. Rc7+ {4.21/41 3 Draw accepted} 1/2-1/2 [/pgn]

Rebel and some other very strong engines believe it is winning. The top engines know that black can draw. Is this a pruning issue ?
Crafty Heavy NNUE at move 44:

[d]6k1/2R3p1/8/8/7P/7n/8/6K1 w - -

Code: Select all

Engine: Crafty NNUE 25.6.1 (1024 MB)
gemaakt door Robert Hyatt and the Crafty team; UCI a

16/26  0:01   +0.35    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Te5 Ph7 
                       50.Te8+ Kf7 51.Tc8 Kg6 52.h5+ Kf7 
                       53.Th8 Pf6+ 54.Kf5 (615.197) 442 

17/27  0:01   +0.38    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Tc5 Pd7 
                       50.Tc7 Pf6+ 51.Kg5 Kh7 52.Tc8 Pg8 
                       53.h5 (796.978) 514 

18/27  0:01   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Pd7 
                       50.Kf5 Pf8 51.Ta6 Ph7 52.Tb6 Pf8 
                       53.Kf4 Ph7 (951.295) 569 

19/30  0:01   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Tb6 Pf8 55.Kf4 Ph7 (1.121.721) 612 

20/31  0:02   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Tb6 Pf8 55.Kf4 Ph7 (1.477.276) 690 

21/32  0:02   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Tb6 Pf8 55.Kf4 Ph7 (1.824.060) 738 

22/32  0:02   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Kg6 Pf8+ 55.Kf5 Ph7 
                       56.Tb6 Pf8 57.Kf4 (2.110.492) 770 

23/33  0:03   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Kg4 Pf6+ 55.Kg5 Ph7+ 
                       56.Kg6 Pf8+ 57.Kf5 (2.533.221) 809 

24/33  0:03   +0.37    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Kg4 Pf8 49.Ta5 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Tb6 Pf6 55.Kg6 Pd7 
                       56.Ta6 Pf8+ 57.Kf5 (3.070.252) 843 

25/40  0:06   +0.41    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Ta5 Pf8 49.Kg4 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Kg8 54.Tb6 Pf8 55.Tb8 Kf7 
                       56.Tb7+ Kg8 57.Tb6 (5.500.578) 901 

26/40  0:07   +0.41    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Ta5 Pf8 49.Kg4 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Pf8 54.Ta8 Ph7 55.Ta7+ Kg8 
                       56.Tc7 Pf8 57.Tc6 (6.371.850) 910 

27/40  0:07   +0.41    44.Kh2 Pf4 45.Tc5 Pg6 46.Kh3 Kh7 
                       47.Th5+ Kg8 48.Ta5 Pf8 49.Kg4 Kf7 
                       50.Ta8 Ph7 51.Ta6 Pf6+ 52.Kg5 Ph7+ 
                       53.Kf5 Pf8 54.Ta8 Ph7 55.Ta7+ Kg8 
                       56.Tc7 Pf8 57.Tc6 (7.208.161) 918 

28/41  0:10   +0.41    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Kh7 
                       47.Th5+ Kg8 48.Ta5 Kh7 49.Ta7 Pf8 
                       50.Kg4 Pe6 51.Kf5 Pf8 52.Ta6 Kg8 
                       53.Ta8 Kf7 54.Ta7+ Kg8 55.Ta6 Kf7 
                       56.Ta8 Ph7 57.Ta7+ (9.757.893) 936 

29/41  0:11   +0.41    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Kh7 
                       47.Th5+ Kg8 48.Ta5 Kh7 49.Ta7 Pf8 
                       50.Kg4 Pe6 51.Kf5 Pf8 52.Kg5 Kg8 
                       53.Kg4 Kh7 54.Kf5 Kg8 55.Ta6 Kf7 
                       56.Ta8 Ph7 57.Ta7+ (11.256.013) 940 

30/45  0:29   +0.72    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (28.005.596) 960 

31/45  0:30   +0.56    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (29.757.154) 963 

32/45  0:32   +0.67    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (31.646.114) 965 

33/45  0:34   +0.66    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (33.497.637) 972 

34/45  0:39   +0.61    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (37.899.860) 962 

35/47  0:45   +0.70    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (43.484.117) 965 

36/51  1:00   +0.47    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (58.999.029) 983 

37/51  1:16   +0.69    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Ta7+ Kg8 55.Tb7 Ph7 
                       56.Tb8+ Pf8 57.Tc8 (75.466.680) 981 

38/57  1:59   +0.82    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Kg4 Ph7 55.h5 Pf6+ 
                       56.Kh4 Ph7 57.Tc8 (116.356.251) 971 

39/57  2:04   +0.67    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Kg4 Ph7 55.h5 Pf6+ 
                       56.Kg5 Ph7+ 57.Kf5 (121.393.015) 972 

40/57  2:12   +0.67    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Kg4 Ph7 55.h5 Pf6+ 
                       56.Kg5 Ph7+ 57.Kf5 (128.959.097) 975 

41/57  2:33   +0.67    44.Kh2 Pf4 45.Tc5 Pg6 46.Kg3 Pe7 
                       47.Kg4 Kh7 48.Th5+ Kg6 49.Th8 Kf7 
                       50.Kh5 Pg8 51.Kg5 Pf6 52.Ta8 Ph7+ 
                       53.Kf5 Pf8 54.Kg4 Ph7 55.h5 Pf6+ 
                       56.Kg5 Ph7+ 57.Kf5 (149.766.444) 976 

beste zet: Kg1-h2  tijd: 2:43.735 min  n/s: 976.950   nodes: 149.766.444
Move 48 with Rebel EAS 3.0:

[d]R4n2/5kp1/8/8/7P/8/7K/8 w - -

Code: Select all

Engine: Rebel EAS 3.0 (1024 MB)
gemaakt door Ed Schroder & Chris Whittington (C) 200

26/43  0:01   +2.24    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta7+ Kg8 52.h6 gxh6 53.Kh5 Pf6+ 
                       54.Kxh6 Pe8 55.Kg6 Kf8 56.Kf5 Pg7+ 
                       57.Ke5 Kg8 58.Kf6 Pe8+ 59.Ke7 Pg7 
                       60.Tc7 Pf5+ 61.Kf6 (1.423.210) 868 

27/47  0:01   +2.34++  48.h5 g6 (1.646.402) 875 

27/38  0:01   +2.44++  48.h5 (1.730.520) 879 

27/40  0:02   +2.59++  48.h5 (1.909.018) 878 

27/44  0:02   +2.69    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta6 Kg8 52.Ta7 Pf6 53.Kg5 Pd5 
                       54.Tb7 Kf8 55.Tb8+ Kf7 56.Ta8 Pe7 
                       57.Ta7 Kf8 58.Tc7 Ke8 59.Tb7 Kf7 
                       60.Tb5 Kf8 61.Tb6 (2.077.556) 882 

28/38  0:02   +2.69++  48.h5 Kg8 (2.417.770) 883 

28/40  0:02   +2.69    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta6 Kg8 52.Ta7 Pf6 53.Kg5 Pd5 
                       54.Tb7 Kf8 55.Tb8+ Kf7 56.Ta8 Pe7 
                       57.Td8 Pc6 58.Td7+ Pe7 59.Kf4 Ke6 
                       60.Ta7 Pd5+ 61.Kg4 (2.491.024) 883 

29/41  0:02   +2.69    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta6 Kg8 52.Ta7 Pf6 53.Kg5 Pd5 
                       54.Tb7 Kf8 55.Tb8+ Kf7 56.Ta8 Pe7 
                       57.Td8 Pc6 58.Td7+ Pe7 59.Kf4 Ke6 
                       60.Ta7 Pd5+ 61.Kg5 (2.605.407) 885 

30/34  0:03   +2.69++  48.h5 Kg8 (2.978.544) 882 

30/45  0:03   +2.56    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta6 Kg8 52.Ta7 Pf6 53.Kg5 Pd5 
                       54.Tb7 Kf8 55.Tb8+ Kf7 56.Ta8 Pe7 
                       57.Td8 Pc6 58.Td7+ Pe7 59.Tb7 Kf8 
                       60.Tc7 Ke8 61.Tc5 (3.405.792) 885 

31/40  0:04   +2.56    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta6 Kg8 52.Ta7 Pf6 53.Kg5 Pd5 
                       54.Tb7 Kf8 55.Tb8+ Kf7 56.Ta8 Pe7 
                       57.Td8 Pg8 58.Td7+ Pe7 59.Td6 Pg8 
                       60.Tb6 Pe7 61.Ta6 (3.699.448) 881 

32/39  0:04   +2.56    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Ta6 Kg8 52.Ta7 Pf6 53.Kg5 Pd5 
                       54.Tb7 Kf8 55.Tb8+ Kf7 56.Ta8 Pe7 
                       57.Td8 Pg8 58.Td7+ Pe7 59.Td6 Pg8 
                       60.Tb6 Pe7 61.Ta6 (3.792.192) 881 

33/49  0:04   +2.66++  48.h5 Kg8 (4.253.348) 880 

33/52  0:05   +2.76++  48.h5 (4.992.225) 883 

33/63  0:06   +2.64    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Ta7+ Kg8 55.Tb7 Ph7 56.Tb8+ Kf7 
                       57.Tb5 Pf8 58.Tb7+ Kg8 59.Tb8 Kf7 
                       60.Tc8 Ph7 61.Tc7+ (5.905.819) 895 

34/50  0:07   +2.75++  48.h5 Pe6 (6.668.425) 894 

34/55  0:07   +2.68    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Ta7+ Kg8 55.Ta6 Kh7 56.Kg5 Kg8 
                       57.Ta8 Kf7 58.Kg4 Pe6 59.Ta7+ Kf6 
                       60.Ta4 Pf8 61.Ta6+ (6.919.648) 895 

35/73  0:10   +2.78++  48.h5 Kg8 (9.229.055) 898 

35/73  0:10   +2.77    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf1 Ke8 
                       60.Kf5 Pf8 61.Kg5 (9.802.704) 910 

36/55  0:13   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Kf5 (12.133.696) 913 

37/57  0:18   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Kf5 (16.756.550) 911 

38/69  0:20   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Kf5 (18.509.877) 914 

39/64  0:22   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta6 (20.400.010) 914 

40/70  0:29   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta6 (27.011.288) 920 

41/74  0:51   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta6 (50.150.340) 977 

42/66  1:02   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (61.978.604) 995 

43/68  1:05   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (65.076.889) 1000 

44/69  1:21   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (81.364.009) 1000 

45/64  1:40   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (102.717.265) 1020 

46/74  2:21   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (149.042.975) 1053 

47/79  2:50   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (183.866.461) 1079 

48/75  2:57   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (192.200.417) 1083 

49/72  3:14   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (211.216.968) 1083 

50/87  5:06   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (339.454.699) 1106 

51/99  6:16   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (431.221.158) 1146 

52/98  7:57   +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (565.819.515) 1185 

53/93  10:32  +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (793.900.235) 1256 

54/98  12:52  +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (1.003.212.033) 1297 

55/103 15:22  +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (1.284.414.436) 1392 

56/95  22:21  +2.76    48.h5 Ph7 49.Kg3 Pf6 50.Kh4 Ph7 
                       51.Kg4 Pf6+ 52.Kg5 Ph7+ 53.Kf5 Pf8 
                       54.Kg4 Pe6 55.Ta7+ Kf6 56.Ta4 Pf8 
                       57.Ta3 Pe6 58.Tf3+ Ke7 59.Tf5 Ke8 
                       60.Ta5 Kf7 61.Ta8 (2.165.174.259) 1614
It probably has more to do with the way the NNUE can be trained. If you throw in a lot of known draws, the engine may learn to avoid them if ahead, but it can also lead to an engine that escapes in draws thinking that does not lose Elo if you play against for instance Stockfish. (The Elo goes up a little if you know a lot of drawing positions playing strong opposition) Rebel on the other hand is EAS trained so it favors sacrifices and attacking positions, it gets those positions in training. Here is also a convention of the way the output is given I think, the high value from move 47 or 48 is less high with Rebel EAS 3.0 (same network) and just gives Rebel two pawns for material difference, Rook against Knight (see above). It does not actually think Rebel is winning but not having tablebases, it leaves the expected result open. Well that is how I would interpret it.

Crafty NNUE gives much more drawish score at the six men point (after exchange on move 43).
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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