Author: Peter Berger
Date: 13:26:43 11/10/00
I feel a little guilty about this post as Gambit Tiger 1.0 _really_ is a
marvellous prog and usually smokes Crafty without much difficulties in most
pretty games on equal hardware( sufficient data to prove beyond any doubt ) and
I can't remember having so much fun with another chessprogram before .
Yet this paradigm babble somehow annoys me a little , especially since I had to
view the few posted games which proved nothing ( usually nice Tiger wins in
complicated endgames where it _really_ rules ) .
OK , so what are the theories ?
Thorsten Czub/Whittington-alias : "Gambit Tiger wins its games because it
follows a new "intelligent" paradigm diving into the "fog" in most mysterious
ways !"
Hyatt : " Tiger has a _very_ good search and so Gambit can make up for its
speculative king safety eval by reaching high depths and sometimes even take
advantage of it . High eval is mainly due to over-estimation of open files
against opponent's king which is sometimes right , sometimes wrong ! "
Dr Hyatt sometimes has a pretty dubious way of expressing himself IMHO but here
I have an example that _really_ simply seems to be valid data supporting one of
the both opinions ( something I have desperately missed before ..) :
Game played on 2 PIII 500s , Time control : Game in 1 hour / 10 seconds
increment per move :
[Event "Computer chess game"]
[Site "pete's compi(s)"]
[Date "2000.11.10"]
[Round "1"]
[White "wcrafty17.14.exe"]
[Black "Gambit Tiger 1.0"]
[Result "1-0"]
[TimeControl "3600+10"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8.
Nb3 Nbd7 9. Qf3 Be7 10. O-O-O Qc7 11. Bd3 b5 12. Rhe1 Bb7 13. a3 h6 14. Bh4
O-O 15. Qh3 Rfc8 16. Kb1 Nb6 17. g4 d5 18. e5 Ne4 19. Bxe4 Bxh4 20. Qxh4
dxe4 21. Qf2 Nc4 22. Nxe4 Bd5 23. Rd3 b4 24. axb4 a5 25. Nd6 Nxd6 26. exd6
Qxd6 27. bxa5 Rab8 28. f5 Qc6 29. fxe6 Bxe6 30. h3 Bc4 31. Rc3 Qa4 32. Re4
Rb4 33. Qf4 Qb5 34. Nd2 Rxb2+ 35. Kc1 Ra2 36. Nxc4 Ra1+ 37. Kd2 Qb1 38. Rb3
Qd1+ 39. Kc3 Ra2 40. Qd2 Qa1+ 41. Kb4 Kh7 42. Qc3 Rb8+ 43. Kc5 Qg1+ 44. Qe3
Rc8+ 45. Kb5 Qa1 46. Re8 Rxe8 47. Qxe8
{Black resigns} 1-0
Somewhere around move 21. ...Nc4 Gambit Tiger +2.50
Gambit Tiger on the left :
28. ...Qc6 +1.52 depth 11
29. ...Bxe6 +0.86 depth 13
30. ...Bc4 +1.38 depth 11
31. ...Qa4 +0.92 depth 12
32. ...Rb4 +0.76 depth 12
33. ...Qb5 -0.10 depth 12 Crafty 34. Nd2 +3.78
34. ...Rxb2+ +0.24 depth 12 Crafty 35. Kc1 +4.11
35. ...Ra2 +1.28 depth 11 Crafty 36. Nxc4 +4.13
36. ...Ra1+ +0.12 depth 11 Crafty 37. Kd2 +4.05
37. ...Qb1 0.00 depth 11 Crafty 38. Rb3 +4.00
38. ...Qd1+ +1.50 depth 10 Crafty 39. Kc3 +3.87
39. ...Ra2 +0.70 depth 10 Crafty 40. Qd2 +4.22
40. ...Qa1+ +0.70 depth 11 Crafty 41. Kb4 +4.49
41. ...Kh7 -0.10 depth 10 Crafty 42. Qc3 +4.86
42. ...Rb8 -0.07 depth 11 ( other engines might have resigned here ..)
43. ...Qg1+ -0.20 depth 11 !!!!!!! Crafty 44. Qe3 +5.24
And only now Gambit Tiger gets suspicious and gets a first fail-low to the
negative side .
The "new paradigm" obviously won't avoid letting the prog look a little silly
from time to time :)
After 47. Qxe8 I decided to resign for the Gambit Tiger .
pete
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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