Author: Uri Blass
Date: 06:46:18 11/14/02
Go up one level in this thread
On November 14, 2002 at 08:45:12, José Carlos wrote: >On November 14, 2002 at 06:29:49, Uri Blass wrote: > >>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 > > I'm writing a new engine (MTDf) and, at this moment, I have nothing but >material score. It fails low for c3 at ply 5 and doesn't consider it anymore. > > José C. Movei also failed low for material reasons at depth 4 but it saw at depth 4 problems that are not justified because movei still does not detect forks in the qsearch. Uri
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