Author: Harald Faber
Date: 21:37:14 04/14/03
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On April 14, 2003 at 15:15:48, Ulf Flörsheimer wrote: >In a game between Shredder 7.04 and Chess Tiger 15 (ChessBase, style normal), 25 >minutes per game, no pondering, P4-2400, both 96 MB-Hashtables Chess Tiger made >a big tactical mistake: > >[Event "Wettkampf P4-2400, Blitz:25'"] >[Site "?"] >[Date "2003.04.14"] >[Round "12"] >[White "Chess Tiger 15.0"] >[Black "Shredder 7.04"] >[Result "0-1"] >[ECO "A80"] >[PlyCount "52"] > >1. d4 f5 2. Nc3 d5 3. Bg5 Nf6 4. e3 e6 5. Nf3 Be7 6. Bd3 c5 7. dxc5 O-O 8. a3 >Ne4 9. Bxe4 fxe4 10. Bxe7 Qxe7 11. Nd4 Nc6 12. Nb3 Qg5 13. O-O Ne5 14. Qe2 Nf3+ >15. Kh1 Rf6 16. gxf3 exf3 17. Rg1 Qh5 18. Rg5 Qxg5 19. Qf1 Qh5 20. Nd2 Rh6 21. >Qg1 Rg6 22. Qf1 e5 23. Nxd5 Rg2 24. Nxf3 Bh3 25. Qd1 Rxf2 26. e4 Rf8 0-1 > >Have a look on Tigers move 14. Qe2?? (eval.: -0.12 at depth 13, expecting Bd7): >Tiger has absolutely no idea of the further Nf3+!! which ends the game. > >It takes Tiger more than 3 minutes to evaluate Qe2 with -0.62 (at depth 15), >expecting Nf3+, where -0.62 is still a very optimistic. And it takes nearly 7 >minutes to find a slightly better move (Nb5, -0,44). > >I think this position could be helpful for further improvements of your >impressive strong engine. > >Greetings >Ulf This reminds me on the same winning move in Thueringen last year where Tiger has also overseen Nf3+ vs. List 5.01 but with tournament time control. Here it is: [Event "Thüringen 2002"] [Site "Mohlsdorf"] [Date "2002.11.15"] [Round "8"] [White "Chess Tiger 15.0 - Cel. 1539"] [Black "List 5.01 - AMD 1700"] [Result "0-1"] [ECO "A29"] [PlyCount "123"] [EventDate "2002.11.15"] 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bb4 5. Bg2 O-O 6. O-O e4 7. Ng5 Bxc3 8. bxc3 Re8 9. f3 exf3 10. Nxf3 d5 11. d4 Ne4 12. Qc2 Bf5 13. Nh4 Bg6 14. Nxg6 hxg6 15. Rb1 Na5 16. cxd5 Qxd5 17. Bf4 Nc4 18. Rf2 c5 19. dxc5 f5 20. Rb4 a5 21. Rb5 Qf7 22. Bxe4 Rxe4 23. Qd3 Rae8 24. h3 Kh7 25. a4 Ne5 26. Qc2 Qc4 27. Rxb7 Nf3+ 28. exf3 Re1+ 29. Kg2 R8e2 30. Qxe2 Rxe2 31. Rc7 Qd3 32. c4 Qxc4 33. c6 Rc2 34. Rxc2 Qxc2+ 35. Kg1 Qd1+ 36. Kf2 Qd5 37. Rc8 Qa2+ 38. Kf1 g5 39. Bxg5 Qxa4 40. Bf4 Qc4+ 41. Kf2 Qa6 42. Rc7 Qb6+ 43. Kg2 Qb2+ 44. Kf1 a4 45. Ra7 Qb1+ 46. Ke2 Qc2+ 47. Bd2 Qxc6 48. Ra5 Qc4+ 49. Ke1 Qb3 50. Bc1 Qxf3 51. Rxa4 Qxg3+ 52. Ke2 Qg2+ 53. Ke1 Qxh3 54. Bd2 g5 55. Ra7+ Kg6 56. Ra6+ Kh5 57. Ra5 Qd3 58. Kd1 g4 59. Ra7 f4 60. Ra5+ Kh4 61. Kc1 g3 62. Ra8 0-1 27...Nf3+ is a deadly move.
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