Computer Chess Analysis Mistakes
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Ok so I just finished a match against the 1800 Computer in which I won as black due to the conputer making an awful blunder in a completely drawn endgame. I analyzed he game online using the chess.com deep analysis, however it did not count the computer's horrible move as a blunder, rather it counted it as he best move! The computer's blunder is 119. Rd1, and here is the PGN of the game: 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Be6 6. Qa4+ Nc6 7. Nxd5 Bxd5 8. Nf3 Bc5 9. d3 O-O 10. O-O Be6 11. Ng5 Bd5 12. Ne4 Bb6 13. Nc3 Bxg2 14. Kxg2 Qd4 15. Be3 Qxa4 16. Nxa4 Nd4 17. Bxd4 exd4 18. a3 Rfe8 19. Kf3 Re7 20. Rfe1 Rae8 21. g4 Re6 22. Rac1 c6 23. Nxb6 axb6 24. e3 dxe3 25. fxe3 Rd8 26. d4 Rh6 27. Kg3 Re6 28. a4 Ra8 29. Ra1 Rae8 30. Kf2 Rf6+ 31. Kg2 Rfe6 32. Ra3 Rg6 33. h3 Ra8 34. Rb3 Rxa4 35. Rxb6 Ra7 36. Rd1 h6 37. d5 cxd5 38. Rxg6 fxg6 39. Rxd5 Ra2 40. Rd8+ Kh7 41. Kg3 Rxb2 42. g5 Rb3 43. gxh6 Rxe3+ 44. Kf4 Rb3 45. hxg7 Kxg7 46. Kg4 b5 47. Kg5 Rxh3 48. Rd7+ Kf8 49. Rb7 Rb3 50. Rh7 b4 51. Kxg6 Rb1 52. Kf6 Ke8 53. Ke5 b3 54. Rh8+ Kd7 55. Rh2 b2 56. Rd2+ Kc6 57. Kd4 Kb5 58. Kd3 Kb4 59. Kc2 Rh1 60. Kxb2 Rh8 61. Rd4+ Kc5 62. Ra4 Rb8+ 63. Kc3 Rf8 64. Ra5+ Kb6 65. Rg5 Rf3+ 66. Kc4 Rf4+ 67. Kb3 Rf3+ 68. Kb4 Rf1 69. Rg6+ Kc7 70. Ra6 Rb1+ 71. Kc4 Rc1+ 72. Kd4 Rd1+ 73. Ke3 Re1+ 74. Kf3 Rf1+ 75. Kg2 Rf8 76. Rg6 Kd7 77. Kh3 Ke7 78. Ra6 Rh8+ 79. Kg4 Rg8+ 80. Kf4 Rf8+ 81. Ke3 Rf1 82. Ra4 Re1+ 83. Kf3 Rf1+ 84. Kg3 Rg1+ 85. Kh2 Rg6 86. Kh3 Rb6 87. Kh4 Kf6 88. Ra1 Rb4+ 89. Kg3 Kf5 90. Ra5+ Ke4 91. Ra3 Rb8 92. Rf3 Rg8+ 93. Kf2 Rh8 94. Ra3 Rh2+ 95. Kg1 Rd2 96. Kf1 Kd4 97. Ra8 Ke3 98. Ke1 Re2+ 99. Kd1 Rd2+ 100. Ke1 Re2+ 101. Kd1 Rh2 102. Rg8 Kd3 103. Ke1 Ke3 104. Kd1 Ra2 105. Rd8 Ra1+ 106. Kc2 Ra2+ 107. Kc3 Ra3+ 108. Kc4 Ra4+ 109. Kb5 Rh4 110. Rd1 Rh5+ 111. Kb4 Rh4+ 112. Kb3 Ke2 113. Ra1 Rh3+ 114. Ka2 Rh8 115. Rc1 Ra8+ 116. Kb1 Rb8+ 117. Ka2 Ra8+ 118. Kb1 Rh8 119. Rd1 Kxd1 120. Ka2 Kc2 121. Ka1 Ra8# 0-1
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
notmtwain wrote:
No I was playing on this site, and the level 8 computer is rated 1800. I play on a mobile device perhaps you do not and that is why it does not show the number rating on the computer levels. As for the 59 moves with pawn move or capture I believe a check in between those moves prevents a draw, otherwise I would have received the option to claim one. As for the computer "commiting suicide" I have lost rook endgames like this one, so it is not too far-fetched for the computer to fail as well.
What site were you playing on? There is no 1800 computer here. They only go from 1-10. They aren't rated, because the games aren't timed and allow takebacks.
At any rate, they may just be programmed to commit suicide at some point. You went 59 moves without a pawn move or capture. That may be automatically considered a draw ( even though a human would have to claim it.)
Btw, sorry for all of the same posts, my internet stopped working, and I posted several times by accident.
Aug 25, 2017
0
#13
The 50-move rule does not apply to checks, only captures and pawn moves.
The idea of the 50-move rule is that the game must have progress made in order to avoid a draw - checks do not make progress, since the position can be repeated through checks.
However, since pawns can't go backwards, and pieces cannot be recovered, captures and pawn moves are the only moves which make the position irreversible, and hence negate the 50-move rule.
Anyways, the computer is wrong. 119th move was a blunder. and that's it. The computer is wrong. Chess.com deep analysis isn't even that good in my opinion.
Cherub_Enjel wrote:
The 50-move rule does not apply to checks, only captures and pawn moves.
The idea of the 50-move rule is that the game must have progress made in order to avoid a draw - checks do not make progress, since the position can be repeated through checks.
However, since pawns can't go backwards, and pieces cannot be recovered, captures and pawn moves are the only moves which make the position irreversible, and hence negate the 50-move rule.
Anyways, the computer is wrong. 119th move was a blunder. and that's it. The computer is wrong. Chess.com deep analysis isn't even that good in my opinion.
It sure looks like suicide to me.
As I understand it, the computer programs play on the player's local device. I would guess that in this case, the program was running out of memory and can't be held responsible.
Which is one of the reasons that the program isn't really rated.