Author: David Dory
Date: 01:23:16 03/29/02
Go up one level in this thread
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."
Silicon counts a lot more, and fears nothing!
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!
. 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.