Author: Miguel A. Ballicora
Date: 07:29:20 03/29/02
Go up one level in this thread
On March 29, 2002 at 04:23:16, David Dory wrote: >On March 28, 2002 at 13:38:22, Mike Hood wrote: > >>Sometimes people in this forum talk about "typical computer moves". I don't >>think they mean particularly good or particularly bad moves, just moves that a >>top computer program plays differently than a top GM. Some people even claim to >>be able to look at a game and state whether one of the players is a program or >>not. Personally, I don't know what the criteria are. Could someone please post >>some example games by programs and point out moves that are "typical computer >>moves", explain why, and also say what a human of the same playing strength >>would have played. >> >>Thanks :) > >>[D]8/B5pp/4k3/P7/6n1/8/P6P/7K b - - 0 41 > >>Crafty as black played Nxh2!!(??). >This is a good example of a typical computer move IMO. Crafty understands that >this is a dead draw and seeks to immediately simplify by swapping the black >knight for a pawn. > >Human players look at this and think, "Oh, Gosh, Black will need the knight to >fight off those 'a' pawns from queening." You underestimate humans. This kind of positions are a piece of cake for carbon. >Silicon counts a lot more, and fears nothing! That is the problem of computers. In this position, you do not need to count to find the right plan/move. Strong humans are way much better in this kind of positions. The correct way of thinking most of the time is some kind of retrograde analysis, which computers don't do (unless of course they start hitting tablebases). >Jouni posted this as a stupid move, but of course, it's not stupid once you >count it all out. Did I mention that computers love to count?? <grin> > >What's Oh So Human, is that even after we see that the computer move was OK (if >it was), we STILL think if was DUMB or WRONG, AN OUTRIGHT BLUNDER, or (and this >one I __REALLY LOVE__ : > **** THE COMPUTER WAS JUST L-U-C-K-Y *** > >A 100% deterministic machine being called lucky just hits my funny bone a good >one! Don't laugh. Computer chess is a whole gambling game. Unless there is a checkmate, at almost every leaf of the analysis there is a gambling situation. Good programs weigh very well their chances, but it is still a gamble. Regards, Miguel > >. Note Jouni's comments below. > >Dave > > > > >>Yes the game ended draw so the move is >>probably correct, but I doubt, that Crafty's evaluation really understand this. >>E.g. if white plays a6 then black has no way to a8 square... >> >>Crafty 18.14 is clever endgame player, but still I am disappointed, when >version >>17.14 solves 4 positions more in my 40 position endgame test and also 17.14 >>is on average about 30% faster in all postions! >> >>Jouni > >Mr. Hyatt's comments: > >It is just using endgame knowledge to go into a forced draw due to bishop >plus wrong rook pawns... > > >>Here's whole game: >> >>[Event "Computer chess game"] >>[Site "USKI"] >>[Date "2002.03.26"] >>[Round "-"] >>[White "Yace 0.99.56"] >>[Black "Crafty-18.14"] >>[Result "1/2-1/2"] >>[TimeControl "60/900"] >> >>1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Be7 5. f4 exf4 6. Bxf4 Nf6 7. Be2 O-O 8. >>Nf3 Bg4 9. Nd2 Bc8 10. O-O Na6 11. Bxa6 bxa6 12. Nc4 Rb8 13. Qd3 Nh5 14. >>Bd2 Bf6 15. Kh1 Bg4 16. Ne3 Qc8 17. b3 Be5 18. Nc4 Qe8 19. Nxe5 Qxe5 20. >>Qxa6 f5 21. Rae1 f4 22. Qd3 Rf6 23. Ne2 Rbf8 24. Rf2 R6f7 25. Ng1 Re8 26. >>Nf3 Qf6 27. Bc3 Qg6 28. e5 Qxd3 29. cxd3 Bxf3 30. Rxf3 dxe5 31. d6 Rd7 32. >>Rxe5 Rxe5 33. Bxe5 Kf7 34. g4 Ke6 35. d4 cxd4 36. Bxd4 Rxd6 37. Bxa7 Nf6 >>38. Rxf4 Ra6 39. Ra4 Rxa4 40. bxa4 Nxg4 41. a5 Nxh2 42. Kxh2 Kd5 43. a6 Kc6 >>44. a4 g5 45. Kg3 Kc7 46. Kg4 h6 47. Kf5 Kc8 48. a5 Kc7 49. Kg4 Kc8 50. Kh5 >>Kc7 51. Kxh6 g4 52. Kg5 g3 53. Kh5 g2 54. Kg6 Kd7 55. Kg5 Kc8 56. Bg1 Kb8 >>57. Kf4 Ka8 58. Kf3 Kb8 59. a7+ Kb7 60. a8=Q+ Kxa8 1/2-1/2
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.