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SnowballSH / Avalanche

UCI Chess Engine written in Zig.
MIT License
71 stars 4 forks source link

It can't mate with K+R against the lone king. #2

Closed SzotsGabor closed 2 years ago

SzotsGabor commented 2 years ago

Here is a game from my ongoing tournament:

[Event "Avalanche 0.2 64-bit - Apr 10"] [Site "Szentendre"] [Date "2022.04.11"] [Round "14"] [White "Anka 0.6.0 64-bit"] [Black "Avalanche 0.2 64-bit"] [Result "1/2-1/2"] [ECO "A10"] [Opening "English"] [Time "11:47:51"] [Variation "1...g6 2.g3"] [TimeControl "120+1"] [PlyCount "262"]

  1. c4 g6 2. g3 Bg7 3. Bg2 e6 4. e3 d5 5. d4 {+0.04/19 4} Nf6 {-0.21/13 4}
  2. Nf3 {+0.15/19 3} c5 {-0.22/12 4} 7. cxd5 {+0.10/15 4} exd5 {+0.03/12 4}
  3. O-O {-0.09/17 2} O-O {+0.07/12 3} 9. Re1 {-0.07/16 2} Ne4 {+0.10/12 3}
  4. Nc3 {-0.11/18 3} Nc6 {+0.13/13 4} 11. Nd2 {-0.07/19 3} cxd4 {+0.05/12 3} 12. Ndxe4 {-0.04/18 2} dxe4 {+0.27/12 3} 13. exd4 {+0.02/18 2} Qxd4 {+0.15/13 3} 14. Qxd4 {+0.14/18 2} Nxd4 {+0.38/13 6} 15. Bxe4 {-0.14/17 1} Bf5 {+0.30/14 5} 16. Bf4 {-0.09/19 3} Bxe4 {+0.30/13 5} 17. Rxe4 {-0.07/19 2} b5 {+0.28/13 4} 18. Kg2 {+0.04/19 2} Rfd8 {+0.15/14 4} 19. a3 {-0.10/17 3} a6 {+0.43/12 4} 20. Bg5 {-0.02/16 2} f6 {+0.13/13 4} 21. Bf4 {-0.13/20 3} Kf7 {+0.41/13 4} 22. Bc7 {-0.15/19 3} Rd7 {+0.56/14 4} 23. Bb6 {-0.21/21 3} f5 {+0.65/14 4} 24. Rh4 {-0.08/21 3} Nb3 {+0.42/13 3} 25. Re1 {0.00/18 2} h5 {+0.50/13 3} 26. a4 {-0.38/17 1} Rb8 {+1.16/14 3} 27. a5 {-0.86/16 1} Rc8 {+1.29/14 3} 28. Na2 {-0.89/19 3} Bf6 {+1.18/12 3} 29. Rb4 {-0.84/21 2} Nd2 {+1.15/13 3} 30. Rd1 {-0.62/18 1} Rc6 {+1.14/13 3} 31. Be3 {-0.53/19 2} Rc2 {+0.82/15 2} 32. Rb3 {-0.44/23 2} Be7 {+0.59/15 2} 33. Nb4 {-0.26/23 2} Bxb4 {+0.56/15 2} 34. Rxb4 {-0.17/23 2} Kf6 {+0.53/13 2} 35. Rd4 {+0.07/23 2} Rxd4 {+0.77/13 2} 36. Bxd4+ {+0.08/22 2} Ke6 {+0.67/12 2} 37. b4 {+0.10/22 2} g5 {+0.65/13 2} 38. Be3 {+0.08/22 1} Ne4 {+0.04/14 2} 39. Rd8 {+0.13/23 2} f4 {+0.04/14 2} 40. Bb6 {+0.13/21 2} Nd2 {+0.20/12 2} 41. gxf4 {+0.81/21 1} gxf4 {-0.19/12 2} 42. Ra8 {+0.63/21 1} Kd5 {-0.51/12 2} 43. Rxa6 {+0.94/20 2} Kc4 {-0.71/12 2} 44. Bc5 {+1.11/20 2} f3+ {-0.22/12 1}
  5. Kg3 {+0.71/24 1} Ne4+ {-0.26/14 2} 46. Kxf3 {+0.66/24 1} Nxc5 {-0.44/13 1} 47. bxc5 {+0.68/23 2} b4 {-0.26/11 1} 48. Ra8 {+1.03/19 2} Kb3 {-0.74/11 1} 49. a6 {+1.21/17 2} Rxc5 {-0.47/12 1} 50. Kf4 {+1.10/18 2} Ra5 {+0.48/12 1} 51. Ke3 {+0.53/17 1} Ka2 {+1.84/13 1} 52. Rc8 {-1.06/14 1} b3 {+2.50/12 1} 53. Rb8 {-4.41/15 1} b2 {+2.39/12 1} 54. f4 {-4.38/23 2} b1=Q {+2.60/13 1} 55. Rxb1 {-4.41/22 2} Kxb1 {+2.38/13 1} 56. h4 {-4.44/22 1} Kc1 {+2.79/11 1} 57. Ke4 {-4.20/21 2} Rxa6 {+2.40/13 1} 58. Kf5 {-4.15/25 1} Kd2 {+2.81/13 1} 59. Kg5 {-4.24/24 1} Kd3 {+3.00/13 1} 60. Kxh5 {-3.80/24 1} Ke4 {+2.87/13 1} 61. Kg5 {-3.78/24 1} Ra5+ {+2.28/12 1} 62. Kg4 {-5.26/24 1} Ra8 {+2.23/12 1} 63. Kg5 {-5.49/22 1} Kd5 {+2.33/12 1} 64. h5 {-5.72/23 1} Ke6 {+2.86/12 1} 65. h6 {-5.85/24 1} Kf7 {+2.93/11 1} 66. Kf5 {-5.93/20 1} Ra5+ {+3.27/11 1} 67. Kg4 {-6.03/22 1} Kg6 {+3.29/12 1} 68. Kf3 {-6.15/23 1} Kxh6 {+3.65/10 1} 69. Ke4 {-6.43/21 1} Kg6 {+3.81/10 1}
  6. Kd4 {-6.68/23 1} Kf5 {+3.92/10 1} 71. Ke3 {-6.65/21 1} Ra4 {+3.93/10 1}
  7. Ke2 {-6.68/21 1} Ra2+ {+3.83/10 1} 73. Ke3 {-6.59/22 1} Ra3+ {+3.91/10 1} 74. Kd4 {-6.59/22 1} Rg3 {+3.83/11 1} 75. Kc4 {-6.59/22 1} Re3 {+3.83/10 1} 76. Kd5 {-6.59/21 1} Rb3 {+3.79/10 1} 77. Kc4 {-6.59/22 1} Rg3 {+3.85/10 1} 78. Kd5 {-6.59/22 1} Rc3 {+3.84/10 1} 79. Kd4 {-6.59/22 1} Rh3 {+3.73/10 1} 80. Kc4 {-6.59/22 1} Rf3 {+3.73/10 1} 81. Kb5 {-6.57/20 1} Rc3 {+3.91/10 1} 82. Kb6 {-6.59/22 1} Kxf4 {+3.83/10 1} 83. Kb5 {-6.59/22 1} Kg3 {+3.81/11 1} 84. Kb4 {-6.59/22 1} Rc2 {+3.77/11 1} 85. Kb3 {-6.60/23 1} Rc5 {+3.73/11 1} 86. Kb4 {-6.60/23 1} Rd5 {+3.66/10 1} 87. Kc3 {-6.60/21 1} Rf5 {+3.62/10 1} 88. Kc4 {-6.56/22 1} Rf3 {+3.73/9 1} 89. Kd5 {-6.55/20 1} Rf4 {+3.80/10 1} 90. Ke5 {-6.56/21 1} Rb4 {+3.84/11 1} 91. Kf5 {-6.56/21 1} Kh3 {+3.88/10 1} 92. Kg5 {-6.56/21 1} Ra4 {+3.82/11 1} 93. Kf5 {-6.56/22 1} Rd4 {+3.83/10 1} 94. Kf6 {-6.55/22 1} Rd5 {+3.96/11 1} 95. Ke7 {-6.55/23 1} Kg4 {+4.02/10 1} 96. Ke6 {-6.56/22 1} Rf5 {+4.07/10 1} 97. Kd7 {-6.57/22 1} Rf6 {+3.97/10 1} 98. Ke7 {-6.64/21 1} Rg6 {+4.04/10 1} 99. Kf7 {-6.48/22 1} Rg5 {+3.95/10 1} 100. Kf6 {-6.56/21 1} Rf5+ {+4.06/10 1} 101. Ke6 {-6.56/22 1} Ra5 {+4.00/10 1} 102. Kd6 {-6.57/21 1} Kf3 {+3.95/10 1} 103. Kc6 {-6.58/22 1} Re5 {+3.96/10 1} 104. Kb6 {-6.54/20 0} Rg5 {+3.98/10 0} 105. Kc6 {-6.57/21 0} Kg3 {+3.97/10 0} 106. Kb6 {-6.53/21 1} Rf5 {+3.94/9 1} 107. Kc6 {-6.64/21 1} Kf4 {+3.88/10 1} 108. Kd6 {-6.59/22 1} Rh5 {+3.95/10 1}
  8. Kc6 {-6.59/21 1} Kg4 {+3.95/10 1} 110. Kd7 {-6.56/21 0} Rb5 {+3.99/10 1} 111. Kc6 {-6.57/22 1} Rg5 {+3.93/11 1} 112. Kb6 {-6.60/21 1} Kg3 {+3.94/10 1} 113. Kc7 {-6.48/20 0} Rg6 {+3.98/10 0} 114. Kd7 {-6.55/21 1} Rf6 {+4.00/10 1} 115. Ke7 {-6.49/21 0} Rb6 {+3.96/11 1} 116. Kf7 {-6.59/22 1} Kg4 {+3.95/10 1} 117. Ke7 {-6.55/20 1} Kf5 {+3.94/10 0} 118. Kd7 {-6.47/20 0} Ke5 {+3.96/10 1} 119. Kc7 {-M8/26 1} Rd6 {+3.97/10 1} 120. Kb7 {-M7/30 1} Rf6 {+3.99/10 1} 121. Kc7 {-M8/30 1} Kf4 {+3.98/10 1} 122. Kd7 {-6.49/21 1} Kf3 {+4.04/10 1} 123. Ke7 {-6.44/19 1} Ra6 {+3.97/10 1} 124. Kf7 {0.00/18 0} Rc6 {+3.97/10 1} 125. Ke7 {0.00/35 1} Kg3 {+3.96/10 1} 126. Kd7 {0.00/61 1} Ra6 {+3.96/10 0} 127. Ke7 {0.00/71 1} Kh3 {+3.98/10 1} 128. Kd7 {0.00/80 1} Rf6 {+3.97/10 1} 129. Ke8 {0.00/92 1} Kh2 {0.00/16 1} 130. Ke7 {0.00/105 2} Rg6 {0.00/120 2} 131. Kf7 {0.00/128 2} Rg4 {0.00/61 1 Arena Adjudication} 1/2-1/2
SnowballSH commented 2 years ago

Hi, Thanks for the issue and sorry for the late reply. I have awknowledged this issue, and I think it's probably a bug in Null Move Pruning. I will fix it ASAP. Thank you!

SnowballSH commented 2 years ago

I think it is working now. It can mate with Rook & King even with 1 second left. Feel free to reopen if it still doesn't work. Thanks so much.

SzotsGabor commented 2 years ago

Fine but where are the new binaries? I can see there are some in the master but they are called v0.2 even if I can see some size difference. If you release the fixed version I think it is a good idea to name it differently, e.g. 0.2.1 (if there are no other changes besides the null move fix).

SnowballSH commented 2 years ago

Oh, oops. I forgot to update the binaries in the bin folder... I will do it later today, and I will probably name it 0.2.1 or something. Thanks!

SnowballSH commented 2 years ago

I compiled new binaries for v0.2.1 (still in the binaries folder -- you can find different versions by looking back to the commit history so I didn't store previous binaries in it.) Can you try again?

SzotsGabor commented 2 years ago

I'm going to try it at a later time, at the moment I am busy with other engines.

SnowballSH commented 2 years ago

Absolutely no problem, thanks!