Author: Ernst Walet
Date: 22:29:14 02/05/03
Go up one level in this thread
On February 05, 2003 at 22:19:37, Dave Gomboc wrote: >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 I let Shredder7 run on this position and it thinks that g3 only draws as well. Ernst New game [D]rnb1r1k1/pp3ppp/2p5/3p4/3P1Pnq/P1NBPK2/1PQBN1P1/R4R2 w - - 0 1 Analysis by Shredder 7: 16.Bxh7+ Qxh7 17.Qxh7+ Kxh7 µ (-0.96) Depth: 1/4 00:00:00 16.Bxh7+ Qxh7 17.Qxh7+ Kxh7 µ (-0.96) Depth: 1/4 00:00:00 16.e4 Qf2+ 17.Rxf2 µ (-0.95) Depth: 1/6 00:00:00 16.e4 Qf2+ 17.Rxf2 ³ (-0.60) Depth: 1/6 00:00:00 16.e4 dxe4+ 17.Nxe4 = (0.01) Depth: 1/7 00:00:00 16.e4 dxe4+ 17.Bxe4 Bd7 = (-0.19) Depth: 2/9 00:00:00 16.Ng3 Qh3 17.gxh3 = (-0.18) Depth: 2/9 00:00:00 16.Ng3 Bd7 = (-0.15) Depth: 2/9 00:00:00 16.Ng3 Nh2+ 17.Kf2 Nxf1 18.Rxf1 = (-0.06) Depth: 3/10 00:00:00 16.e4 dxe4+ 17.Nxe4 Bf5 18.g3 Qh1+ 19.Rxh1 = (-0.05) Depth: 3/13 00:00:00 16.e4 dxe4+ 17.Nxe4 Nh2+ 18.Ke3 Ng4+ 19.Kf3 Nh2+ 20.Ke3 Ng4+ 21.Kf3 Nh2+ = (-0.03) Depth: 3/13 00:00:00 16.g3 Qh3 17.e4 dxe4+ 18.Nxe4 Qxg3+ 19.N2xg3 = (-0.02) Depth: 3/13 00:00:00 16.g3 Qh3 17.e4 Nh2+ 18.Kf2 Nxf1 19.Rxf1 = (0.08) Depth: 3/13 00:00:00 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh2 = (0.06) Depth: 4/16 00:00:00 16.g3 Nh2+ 17.Kf2 Qh5 18.Rfe1 Qf3+ 19.Kg1 = (0.14) Depth: 5/15 00:00:00 16.g3 Qh5 17.Rh1 Ne5+ 18.Kg2 Qf3+ 19.Kg1 Nxd3 20.Qxd3 = (0.12) Depth: 6/19 00:00:00 16.g3 Qh5 17.Bxh7+ Qxh7 18.Rh1 Qxc2 19.Rh8+ Kxh8 = (-0.13) Depth: 7/18 00:00:00 48kN 16.g3 Qh5 17.Rh1 Ne5+ 18.Kg2 Qf3+ 19.Kg1 Nxd3 20.Qxd3 f5 = (-0.20) Depth: 7/18 00:00:00 73kN 16.Ng3 Nh2+ 17.Kf2 Nxf1 18.Rxf1 Qxg3+ 19.Kxg3 Rxe3+ 20.Bxe3 = (-0.19) Depth: 7/18 00:00:00 106kN 16.Ng3 Nh2+ 17.Kf2 Ng4+ 18.Kf3 Nh2+ 19.Kf2 Ng4+ 20.Kf3 Nh2+ = (-0.02) Depth: 7/23 00:00:00 171kN 16.Ng3 Nh2+ 17.Kf2 Ng4+ 18.Kf3 Nh2+ 19.Kf2 Ng4+ 20.Kf3 Nh2+ = (-0.02) Depth: 8/26 00:00:00 296kN 16.g3 Qh5 17.Rh1 Ne5+ 18.Kg2 Qf3+ 19.Kg1 Nxd3 20.Qxd3 Qxg3+ 21.Nxg3 = (-0.01) Depth: 8/26 00:00:01 372kN 16.g3 Qh2 17.f5 h5 18.e4 dxe4+ 19.Bxe4 Nd7 20.Bg5 Qh3 = (0.23) Depth: 8/26 00:00:01 520kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh2 19.Kd1 Nxe3+ 20.Bxe3 Rxe3 21.Nxd5 = (0.15) Depth: 9/25 00:00:02 721kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Kg2 Qh2+ 19.Kf3 Bd7 20.f5 Qh5 21.Nf4 Qg5 22.Ke2 Qe7 23.e4 dxe4 24.Bxe4 ² (0.26) Depth: 10/36 00:00:10 3429kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.Rc1 Bd7 20.e4 Nh2 21.exd5 Nxf1 22.Rd1 = (0.23) Depth: 11/41 00:00:24 8059kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.Rb1 Nd7 20.e4 Qg2 21.Rg1 Qf2+ 22.Kd1 dxe4 23.Nxe4 Ne3+ 24.Bxe3 Qxe3 25.Re1 ² (0.28) Depth: 12/35 00:00:39 13272kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.b4 Nd7 20.b5 Nxe3 21.Bxe3 Rxe3 22.Kf2 Qg2+ 23.Kxg2 Rxg3+ 24.Kxg3 ² (0.30) Depth: 13/37 00:00:59 20269kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.Rg1 Nd7 20.e4 dxe4 21.Bxe4 Ndf6 22.Rh1 Nh2 23.Bxh7+ Nxh7 24.Rxh2 Qxh2 25.Qe4 Rxe4 ² (0.28) Depth: 14/44 00:01:44 35527kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.b4 Nh2 20.Rg1 Nf3+ 21.Kf2 Nxg1 22.Rxg1 Nd7 23.b5 Nf6 24.Bxh7+ Qxh7 25.Rg2 Qxc2 = (0.05) Depth: 15/43 00:03:03 62323kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.b4 Nh2 20.Bxh7+ Kh8 21.Rf2 Ng4 22.Bd3 Nxf2 23.Kxf2 Qh2+ 24.Kf3 Bh3 25.Rg1 Nd7 26.g4 Nf6 27.g5 = (0.10) Depth: 16/48 00:07:59 158908kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.Rg1 Nd7 20.e4 dxe4 21.Nxe4 Qh2 22.Bc4 Rxe4 23.Qxe4 Qf2+ 24.Kd1 Qxg1+ 25.Kc2 Ndf6 26.Qxh7+ Kxh7 = (0.14) Depth: 17/51 00:28:15 654130kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.Rg1 Nd7 20.e4 dxe4 21.Nxe4 Qh2 22.Bc4 Nh6 23.Kd1 Nb6 24.Bd3 Bg4 25.Re1 Rad8 26.Kc1 Bxe2 = (0.21) Depth: 18/52 00:55:53 1343092kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.f5 Qg2 20.Rf4 Qh1+ 21.Rf1 Qg2 22.Rf4 Qh1+ 23.Rf1 Qg2 24.Rf4 = (0.00) Depth: 19/59 02:25:58 3516751kN 16.g3 Nh2+ 17.Kf2 Ng4+ 18.Ke1 Qh3 19.f5 Qg2 20.Rf4 Qh1+ 21.Rf1 Qg2 22.Rf4 Qh1+ 23.Rf1 Qg2 24.Rf4 = (0.00) Depth: 20/63 06:13:35 9013035kN (Athlon XP 2400+ @ 2200,, 1024MB hash, 3, 4 and 5 piece EGTB's 06.02.2003)
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