Author: Marc Plum
Date: 16:10:47 07/02/99
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On July 02, 1999 at 16:10:28, Todd Freitag wrote: >On July 01, 1999 at 21:08:25, Marc Plum wrote: > >>After glancing at the reports of the Frankfurt tournament for the past few days, >>I've begun to look through the games. There was an interesting moment in the >>following game from round 2. >> >>[Event "Frankfurt-West Masters"] >>[Site "Frankfurt GER"] >>[Date "1999.06.29"] >>[Round "2"] >>[White "Adams, Mi"] >>[Black "Fritz 6"] >>[Result "1/2-1/2"] >>[ECO "B01"] >>[WhiteElo "2716"] >>[PlyCount "102"] >> >>1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. d4 c6 6. Ne5 Bf5 7. Bd2 Nbd7 8. >>Nxd7 Nxd7 9. Bc4 Qb6 10. d5 Qxb2 11. Bb3 Ne5 12. O-O Qa3 13. Re1 f6 14. Bf4 >>O-O-O 15. Bxe5 fxe5 16. Qf3 Bd7 17. Rad1 c5 18. d6 exd6 19. Bd5 Qa6 20. Rb1 Bc6 >>21. Rb3 Bxd5 22. Nxd5 Kb8 23. Qf7 Qc6 24. c4 Qd7 25. Qf3 Qc8 26. Reb1 Rd7 27. >>Ra3 Qc6 28. Qc3 Be7 29. Qa5 b6 30. Qe1 Rf8 31. f3 Rb7 32. Qe4 h6 33. h3 Bg5 34. >>Rb5 Bf4 35. Rab3 Qd7 36. a4 Bd2 37. Rb2 Ba5 38. Rb1 Qf5 39. Qe2 g6 40. R1b2 Qg5 >>41. Rxa5 Qc1+ 42. Kh2 bxa5 43. Rxb7+ Kxb7 44. Qe4 Kb8 45. Qxg6 Rd8 46. Qf7 Rc8 >>47. Qd7 Qxc4 48. Qxd6+ Ka8 49. Qe6 Kb7 50. Qd7+ Kb8 51. Qd6+ Ka8 1/2-1/2 >> >>Playing over the game, the resource 12. a3 (instead of 0-0) immediately suggests >>itself, trying to trap the Queen at once. After looking at the position for a >>little while, and finding nothing better for Black than 12. . . Bxc2, I turned >>on the Fritz 5 analysis module within CB 6. Fritz found a typical computerish >>resource to muddy the waters, 12 . . . Bg4 13. f3 Nxf3+ 14. gxf3 Bxf3 15. Rb1 >>Bxd1 16 Rxb2. Still, the more I (and Fritz) look at this position, the more >>promising it looks for White. An interesting line for others to examine, with >>or without computer assistance. >> >>I would not expect Adams to overlook this idea for White, although it is >>possible. One wonders whether he evaluated this line as being worse than the >>game continuation, or simply considered it too unclear at such a fast time >>control. I'm also trying to find a forced win for White as the game went, but >>haven't succeeded yet. The ability of computers to hang on in positions like >>this is one of the things which make humans doubt their own understanding of the >>game. >> >>BTW, I've done my best to identify all the relevant posts for this event to see >>if anyone else has brought up this point before. However, there have been a lot >>of messages, and I may have missed one. If so, just let me know. >> >>Marc > >In this line, 15. Qxf3 instead of 15. Rb1 appears to be immediately decisive due >to white's massive development edge and threats on f7 and c6. 15. Qxf3 was the >move that immediately suggested itself to me, so I tried it against crafty at >150knps, whose eval started as roughly even, then became +2 for white after 30 >seconds. After a few more moves it was +4 for white. Play might proceed >15...Qxa1+ 16. Kf2 Qxa3 17. dxc6 e6 (17... Qc5+ 18.Be3 Qxc3 allows mate in a few >after Qxf7+ and 18...Qxc6 allows 19. Ba4) 18. cxb7 Bc5+ 19.Kg2 Rd8 20. Qc6+ Kf8 >where white has a pleasant choice of winning material after 21. Nb1 or forcing >the promotion of his b-pawn after 21. Qc8. > >Since there doesn't appear to be any other way to save the queen, I think Adams >was winning with 12. a3. > >Todd Yes indeed. 15. Rb1 *may* win, but your suggestion looks much stronger, and is more attractive as well. Thanks for pointing this out. I suspect Adams would have found this all in a 40/2 game. Marc
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