Author: Dave Gomboc
Date: 19:19:37 02/05/03
Go up one level in this thread
On February 05, 2003 at 21:01:43, Uri Blass wrote: >On February 05, 2003 at 20:50:11, Robert Hyatt wrote: > >>On February 05, 2003 at 20:23:50, Albert Silver wrote: >> >>>On February 05, 2003 at 18:36:52, Timothy J. Frohlick wrote: >>> >>>>Martin, >>>> >>>>I think that Kasparov saw a possible win but didn't think that it was worth the >>>>effort to play another 50 to 100 moves. These games don't affect his rating or >>>>standing in the "real" chess world. He would deny this whole proposition of >>>>course. I think that he got fatigued and didn't want to risk a loss. >>>> >>>>TJF >>> >>>Fatigued at 1 game every 3 days? Allow me to express my doubts.... >>> >>> Albert >> >> >>I think "weary" might be better. >> >>I watched this game, and the move g3 was _not_ hard to find. It appears to me >>that he analyzed this carefully and said "if I play g3, I think it wins for >>white, but the tactics are difficult and complex and I might well make yet >>another mistake and turn a win into a loss. However, if I play Bxh7+, my >>opponent will obviously see the instant perpetual and take it, letting me off >>with a draw, without my having to offer a draw." >> >>Whether that happened or not is only speculation. But as a human, I would play >>g3 without much thought as any non-checking move is instantly fatal, and the >>checking move simply delays the decision for a move... > >I am not sure if g3 is winning. > >g3 Qh2 f5 h5 was one of the lines that were mentioned and Here is the analysis >of Deep Fritz6 on p850(Fritz8 was not installed on this computer) > >The point is that if white is winning I expect the score of white to improve or >at least not to go down when the program searches deeper and in this case the >score goes down from +2 to +1.41. > >[D]rnb1r1k1/pp3pp1/2p5/3p1P1p/3P2n1/P1NBPKP1/1PQBN2q/R4R2 w - h6 0 1 > >Analysis by Deep Fritz: > >18.Nxd5-- > +- (2.22) Depth: 1/3 00:00:00 >18.Nxd5-- cxd5 > ³ (-0.37) Depth: 1/3 00:00:00 >18.e4! > ± (1.13) Depth: 1/4 00:00:00 >18.e4! dxe4+ 19.Bxe4 > +- (2.03) Depth: 1/4 00:00:00 >18.e4 dxe4+ 19.Bxe4 Nd7 > +- (1.94) Depth: 2/7 00:00:00 >18.e4 dxe4+ 19.Bxe4 Nf6 20.Rh1 > +- (1.91) Depth: 3/10 00:00:00 >18.e4 dxe4+ 19.Bxe4 Nf6 20.Rh1 > +- (1.91) Depth: 4/17 00:00:00 1kN >18.e4 dxe4+ 19.Bxe4 Nd7 20.Rae1 Ndf6 > +- (1.94) Depth: 5/15 00:00:00 5kN >18.e4 dxe4+ 19.Bxe4 Nd7 20.Rae1 Ndf6 21.Bd3 > +- (1.81) Depth: 6/20 00:00:00 16kN >18.Rac1! > +- (1.84) Depth: 6/20 00:00:00 29kN >18.Rac1! Nd7 19.e4 dxe4+ 20.Nxe4 Ngf6 21.Rfe1 > +- (1.88) Depth: 6/20 00:00:00 36kN >18.Rae1! > +- (1.91) Depth: 6/20 00:00:00 55kN >18.Rae1! Nd7 19.e4 dxe4+ 20.Nxe4 Ngf6 21.Nd6 > +- (2.03) Depth: 6/20 00:00:00 61kN >18.Rae1 Nd7 19.e4 Nb6 20.Bg5 dxe4+ 21.Bxe4 Bd7 > +- (2.19) Depth: 7/26 00:00:00 163kN >18.Rae1 Nd7 19.e4 Nb6 20.Bg5 dxe4+ 21.Bxe4 Nc4 22.Bf4 > +- (2.19) Depth: 8/31 00:00:00 322kN >18.Rae1 Nd7 19.e4 Nb6 20.Bf4 dxe4+ 21.Bxe4 Nc4 22.Qb3 Nb6 > +- (2.25) Depth: 9/31 00:00:03 1762kN >18.Rae1 Nd7 19.e4 Nb6 20.exd5 Nxd5 21.Nxd5 > +- (2.22) Depth: 10/33 00:00:05 3285kN >18.Rae1 Nd7 19.e4 Qh3 > +- (2.22) Depth: 11/38 00:00:12 7491kN >18.Rae1 Nd7 19.e4 Qh3 > +- (2.06) Depth: 12/38 00:00:29 17639kN >18.Rae1 Nd7 19.e4 c5 20.Nxd5 cxd4 21.Kf4 > +- (1.88) Depth: 13/40 00:01:13 44451kN >18.e4! > +- (1.91) Depth: 13/42 00:02:26 91432kN >18.e4 dxe4+ 19.Bxe4 Nd7 20.Bg5 c5 21.Rae1 cxd4 22.Nxd4 Nge5+ 23.Kf4 Qh3 > +- (1.75) Depth: 14/46 00:06:52 258106kN >18.e4 dxe4+ 19.Bxe4 c5 20.dxc5 Nd7 21.c6 bxc6 22.Bf4 > +- (1.69) Depth: 15/47 00:23:25 886608kN >18.Rae1! > +- (1.72) Depth: 15/47 00:27:21 1042597kN >18.Rae1-- > +- (1.41) Depth: 16/43 00:38:55 1433521kN > >(blass, tel-aviv 06.02.2003) > >Uri I don't think g3 wins for White at all. In fact, White takes big risks in that line. Some variations: 16. g3 Qh2 17. Bf5 Qh5 18. Bxg4 Bxg4+ 19. Kf2 Qh2+ 20. Ke1 Nd7 with compensation for the material 16. g3 Qh2 17. f5 h5 18. Rae1 Nd7 19. e4 c5 20. exd5 cxd4 21. Nxd4 Nge5+ 22. Kf4 h4 with compensation for the material 16. g3 Qh2 17. f5 h5 18. Rae1 Nd7 19. e4 c5 20. Nxd5 cxd4 21. Bf4 Nde5+ 22. Bxe5 Nxe5+ 23. Kf4 Bxf5 24. Nxd4 and here 24...g5 is a repetition draw but with 24... Ng6+ Black can play for more. 16. g3 Qh2 17. f5 h5 18. Rae1 Nd7 19. e4 c5 20. Nxd5 cxd4 21. Kf4 Nf2 22. Nxd4 Ne5 23. Bb5 g5+ 24. fxg6ep Nxg6+ 25. Ke3 Qxg3+ 26. Nf3 Rxe4+ is complicated but roughly equal. 16. g3 Qh2 17. f5 h5 18. Rae1 Nd7 19. b4 Nde5+ 20. dxe5 Nxe5+ 21. Kf4 Qh3 22. e4 Bxf5 23. Ke3 d4+ 24. Kxd4 Rad8+ and black wins. ... and in a lot of deviations White simply gets crushed! 16. g3 Qh2 17. Rae1 h5 18. e4 is problematic, though. If White is winning, I think it's in this line. Dave
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