Author: Todd Freitag
Date: 13:10:28 07/02/99
Go up one level in this thread
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
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