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Subject: Re: Congratulations to IsiChess

Author: Uri Blass

Date: 03:29:49 11/14/02

Go up one level in this thread


On November 14, 2002 at 06:23:30, Gerd Isenberg wrote:

>On November 14, 2002 at 05:33:47, Uri Blass wrote:
>
>>On November 14, 2002 at 02:40:52, Gerd Isenberg wrote:
>>
>>>On November 13, 2002 at 20:26:46, Russell Reagan wrote:
>>>
>>>>I got my December issue of Chess Life magazine today, and in GM Robert Byrne's
>>>>column "65th Square" he analyzed the game of Shredder vs. IsiChess from the WCCC
>>>>in Maastricht.
>>>>
>>>>I thought it was refreshing to see a chess engine other than the usual top
>>>>contenders get mentioned in such a broadly read magazine. IsiChess lost the
>>>>game, but any publicity is good publicity :)
>>>>
>>>>Here is the game.
>>>>
>>>>[Event "WCCC"]
>>>>[Site "Maastricht"]
>>>>[Date "2002"]
>>>>[Round "-"]
>>>>[White "Shredder"]
>>>>[Black "IsiChess"]
>>>>[Result "1-0"]
>>>>
>>>>1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2
>>>>Nd5 8. c4 Ba6 9. b3 O-O-O 10. Bb2 g6 11. Qd2 Nb6 12. Bd3 d5 13. cxd5 Bxd3
>>>>14. Qxd3 Rxd5 15. Qa6+ Kb8 16. O-O Bg7 17. Na3 Qb4 18. Rad1 Ra5 19. Nc2 Qc5
>>>>20. Qd3 Rxa2 21. Rb1 Ka8 22. Rfc1 Rxb2 23. Rxb2 Bxe5 24. Ra2 Nd5 25. b4 Qb5
>>>>26. Qa3 Qb7 27. Ne1 Nxb4 28. Rb1 c5 29. Nf3 Bd6 30. Rab2 f5 31. Ng5 a6 32.
>>>>Nf3 Re8 33. Qb3 Qd5 34. Qa4 Re7 35. Rd2 Qc4 36. Qd1 h6 37. Rc1 Qe6 38. Qf1
>>>>g5 39. Re1 Qf7 40. Ra1 Ka7 41. Rb2 c4 42. Nd2 Qh5 43. g3 c3 44. Rxb4 Qe2
>>>>45. Rba4 cxd2 46. Rxa6+ Kb7 47. Qb1+ Kc8 48. Qxf5+ Re6 49. Rxd6 cxd6 50.
>>>>Ra8+ Kd7 51. Ra7+ Kc6 52. Qc2+ Kd5 53. Ra5+ Kd4 54. Qb2+ Kc4 55. Qb5+ Kc3
>>>>56. Ra3+ Kd4 57. Ra4+ Kc3 58. Qb4+ Kc2 59. Ra2+ Kd3 60. Ra3+ Kc2 61. Rc3+
>>>>Kd1 62. Qb1#
>>>>1-0
>>>>
>>>>"I am left with this conclusion: The machines have their good and bad days -
>>>>just like us." GM Robert Byrne
>>>
>>>
>>>Thanks Russell,
>>>
>>>often the weaker programs allow some spectacular games, which was the case here.
>>>43... c3 was the blunder after 49... cxd6 there was a forced mate.
>>>Normally i resign a game in an hopeless position. But here we played until mate
>>>for the audience.
>>>
>>>[D]8/k1p1r3/p2b3p/5ppq/1np5/6P1/1R1N1P1P/R4QK1 b - - am c3
>>>
>>>Cheers,
>>>Gerd
>>
>>Movei's debug file
>>
>>1386934 <first : 3 179 3 2084 c4c3 b2b4 d6b4 f1a6 a7b8
>>1386954 <first : 4 -231 4 3811 c4c3 b2b4 h5e2 f1e2 e7e2
>>1386954 <first : 4 -230 5 4201 c7c5
>>1386964 <first : 4 -1 6 5262 c7c5 d2c4 d6c7 a1d1
>>1387004 <first : 4 0 10 11162 e7e2
>>
>>Movei never consider c3 to be best later
>>
>>The analysis at depth 4 suggest that I should improve my qsearch and I still do
>>not consider forks in the qsearch so the position get it's static value.
>>
>>analysis later
>>
>>depth=10 +0.23 e7e2 d2c4 e2b2 c4b2 h5f3 a1a5 a7b8 f1c4 f3e4 c4g8 b8a7 a5a1
>>Nodes: 8968634 NPS: 168456
>>Time: 00:00:53.24
>>
>>depth=11 +0.23 e7e2 d2c4 e2b2 c4b2 h5f3 a1d1 d6c5 d1c1 f3d5 f1e2 a7b8 e2e8 b8b7
>>Nodes: 12852731 NPS: 169449
>>Time: 00:01:15.85
>>
>>
>>after c3
>>
>>depth=10 +0.23 b2b4 h5e2 b4a4 c3d2 a4a6 a7b7 f1b1 b7c8 b1f5 e7e6 a6a8 c8d7 f5f7
>>e6e7 f7d5 e2e1 g1g2
>>Nodes: 1144247 NPS: 178231
>>Time: 00:00:06.42
>>
>>depth=11 +0.15 b2b4 h5e2 b4a4 c3d2 a4a6 a7b7 f1b1 b7c8 b1f5 e7e6 f5d5 e2e1 g1g2
>>e1e4 d5e4 e6e4 g2f3
>>Nodes: 3098218 NPS: 175337
>>Time: 00:00:17.67
>>
>>depth=12 +0.37 b2b4 h5e2 b4a4 c3d2 a4a6 a7b7 f1b1 b7c8 b1f5 e7e6 a6d6 e2e1 g1g2
>>c7d6 f5c2 c8d8 a1a8 d8e7 c2h7 e7f6 h7h6 f6f7 h6h7 f7f6
>>Nodes: 9678577 NPS: 172155
>>Time: 00:00:56.22
>>
>>depth=13 +1.26 b2b4 h5e2 b4a4 c3d2 a4a6 a7b7 f1b1 b7c8 b1f5 e7e6 a6d6 e2e1 g1g2
>>c7d6 f5c2 c8d8 a1a8 d8e7 c2h7 e7f6 h7h6 f6f5 a8f8 f5e5 h6g5 e5e4
>>Nodes: 30646772 NPS: 173469
>>Time: 00:02:56.67
>>
>>Uri
>
>Great Uri,
>
>my current IsiChess also don't considers c3 anymore. It was a matter of king
>safety versus passed pawn evaluation.
>
>Gerd

Movei of today  still does not evaluate passed pawns and does not evaluate king
safety.

Uri



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