Author: Scott Knoke
Date: 18:21:43 07/13/99
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On July 12, 1999 at 04:27:35, Amir Ban wrote: >On July 11, 1999 at 18:49:13, Scott Knoke wrote: > >>In Junior-Fritz, 9th World Computer Chess Championship, Round 5, White played >>19. Nhg1. This certainly looks like a mistake. I read here recently that White >>may have a winning continuation, but I can't find it. The best I can find for >>White is 19. Rae1 but Black already seems better. For example, 1. ... Rfc8 20. >>Re2 Rc7 and Black's queenside attack will be very strong. >> >>What should White play? The game is shown below. And, is 17. Qh4 really better >>than 17. Qg3 ? >> > >According to the post game analysis, it should go (after 19. Rae1 Rfc8 20. Re2 >Rc7) 21. e6 Qe8 22. Nhg5 hxg5 23. Nxg5 and white wins after Qh7+ and Nf3. > >In the analysis it was 20 ... Bd5 rather than 20 ... Rc7 but black's moves don't >matter here. > >The way Alterman looks at this position, if necessary white will double rooks on >the 2nd rank and will be invulnerable, while black can only wait to be killed on >the king side. He may be right, but he certainly overestimated the ability of a >program to understand that. > >Amir > Amir and Torstein: Thanks for the comments. Perhaps (after 19. Rae1 Rfc8 20. Re2) Black must play the unpleasant 20... Bxf3. Then 21. gxf3 is probably best and White is probably better, but not already winning. Of course Black also could play ... Bxf3 on his 19th move. Scott > >>[Event "WCCC99"] >>[Site "Paderborn"] >>[Date "1999.06.17"] >>[Round "5"] >>[White "Junior"] >>[Black "Fritz"] >>[Result "0-1"] >> >>1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. O-O Nxb5 7. >>Nxb5 d6 8. Qe1 a6 9. Nc3 b5 10. d3 Bb7 11. Kh1 Qd7 12. Bd2 Nf6 13. >>e5 Nd5 14. Ne4 f5 15. Neg5 h6 16. Nh3 O-O 17. Qh4 Nb4 18. Bxb4 >>cxb4 19. Nhg1 Rac8 20. Rf2 Rc7 21. Re2 Rfc8 22. Rc1 Bd5 23. Qf2 a5 >>24. Qb6 a4 25. Qa5 b3 26. axb3 Bxb3 27. Ne1 dxe5 28. fxe5 g5 29. >>Qb6 e6 30. Qf2 b4 31. Ra1 Bd5 32. Qe3 Rc5 33. Qd2 Rb8 34. Qe3 >>Ra5 35. d4 Bf8 36. Nd3 a3 37. Rb1 Raa8 38. Rf2 Rc8 39. Rc1 Be4 40. >>bxa3 bxa3 41. Rd2 Qc6 42. Qe1 Rd8 43. c3 a2 44. Ra1 Qxc3 45. Ne2 >>Qc4 46. Qd1 Rdb8 47. Nb2 Qc6 0-1
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