Author: Mike S.
Date: 13:45:17 07/08/01
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On July 08, 2001 at 15:05:30, Kurt Widmann wrote: >(...) I do not belief that fritzes bookkookers >will try to outbook Kramnik,except they hire Kasparov or Anand for this work. Good idea! Although I think, these two would prefer to keep their new opening ideas for their own games against Kramnik (or against each other)! :o) Opening books and their influence on the results are a constant topic among computerchess fans, but I'm afraid only a small minority of us has expert opening knowledge or abilities I think. So it's difficult to find any conclusions. Sometimes it's noticed that progs come out of the book with very low evaluations, or in types of positions they seem not to be able to handle well... Then, maybe somebody takes the effort to try to improve the book based on these observations, maybe not. I think, computer books also still contain bad moves, and/or are vulnerable to traps (in connection to the engine's strenght of course). For example the follwing incorrect sac (5.Bxf7+) will probably kill some progs if their book isn't prepared for it, i.e. some will play 7...Kxg5?? in the (B) variation instead of the correct 7...Qe8 (B2), or loose after 9...Qc6?: 1.e4 Nf6 2.e5 Nd5 3.Nf3 d6 4.Bc4 Nb6 5.Bxf7+ Kxf7 6.Ng5+ Kg8 [6...Ke8?! 7.e6 Bxe6 8.Nxe6 Qd7 9.Qg4 +/=; 6...Kg6 A) 7.h4 h6? 8.h5+ Kf5 (8...Kxg5 9.Qf3 Nd5 10.d3+ Nf4 11.Qxf4# Prestel,O-Doederlein,F/Endingen AT 1987) 9.g4+ Kxe5 10.Qe2+ Kd4 11.b4 Bf5 12.Bb2+ Kd5 13.Nc3+ Kc6 14.Qb5#; B) 7.Qf3 B1) 7...Kxg5? 8.Qf7 g6 9.d4+ Kh5 10.Qf4 h6 11.g3 Bg4 (11...g5 12.Qf7+ Kg4 13.h3#) 12.h3 Bxh3 13.Rxh3#; B2) 7...Qe8 8.e6 B2a) 8...h6 9.h4 B2a1) 9...h5 10.Qe4+ Kh6 (10...Kf6 11.Rh3 g6 12.Qd4+ Kf5 13.Rf3#) 11.Nf7+ Qxf7 12.d4+ g5 13.hxg5+ Kg7 14.exf7+-; B2a2) 9...hxg5 10.Qe4+ Kf6 11.hxg5+ Kxg5 12.Rxh8 Kf6 13.Rxf8+ Qxf8 14.Qf3+ Kxe6 15.Qxf8+-; B2b) 8...Bxe6 9.Nxe6 Qc8±; B2c) 8...h5 9.g4 hxg4 (9...Kh6 10.Qe4 Qg6 11.Nf7+ Kh7 12.Qxg6+ Kxg6 13.Nxh8++-) 10.Qxg4 Rh5 11.Nf7+ Kf6 12.Qxh5 Bxe6±] 7.Qf3 Qe8 8.e6 g6 [8...h6?? 9.Qf7+ Qxf7 10.exf7#] 9.Nf7 Bxe6 [9...Qc6? 10.Nh6+ Kg7 11.Qf7+ Kxh6 12.d3+ Kh5 13.g4+ Kh4 14.Rg1 Qd5 15.Nd2 Qe5+ 16.Kf1 Nc4 17.Nf3+ Kh3 18.Nxe5 Ne3+ 19.Bxe3 dxe5 20.Qf3+ Kxh2 21.Qh1# 1-0 Scheidl,M-Genius3 (40/20:00 P133)] 10.Nxh8 Kxh8 11.Nc3 Nc6-+ Line Regards, M.Scheidl
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