Author: Uri Blass
Date: 13:52:36 09/22/01
Go up one level in this thread
On September 22, 2001 at 16:13:06, Dan Andersson wrote: >You are rignt that 32... Qa1+ seems to lose also, but I did not like that in the >32... Rh8 variation black has no play whatsoever for a long time. Backtracking I >quickly realised that I was even better than I thought in the game. >[D]r3r1k1/4p3/ppp3pB/q3p3/2pP1P2/1bN3Q1/1R4P1/6K1 b - - 0 31 >Black has to play 31... Kh7. And after 32. f5 Rg8 33. Qh4 I believe black has to >fight to draw the game. >[D]r5r1/4p2k/ppp3pB/q3pP2/2pP3Q/1bN5/1R4P1/6K1 b - - 0 33 >This is a good one. Black must avoid 33... gxf5 and it seems only 33... Rh8 >holds the balance. Junior7 on p800 can see 0.00 for gxf5 New position r5r1/4p2k/ppp3pB/q3pP2/2pP3Q/1bN5/1R4P1/6K1 b - - 0 1 Analysis by Junior 7: 4...exd4 5.Nb1 Qxf5 6.Qxe7+ -+ (-3.50) Depth: 3 00:00:00 4...exd4 5.Bf8# +- (#2) Depth: 6 00:00:00 15kN 4...gxf5 5.Bd2+ Kg6 6.Qg5+ Kf7 7.Qxf5+ Ke8 8.Qh5+ Kd7 9.dxe5 -+ (-1.54) Depth: 6 00:00:00 116kN 4...gxf5 5.Bd2+ Kg6 6.Qxe7 f4 7.dxe5 Qc5+ 8.Qxc5 bxc5 9.Bxf4 Kh7 ³ (-0.38) Depth: 9 00:00:02 1830kN 4...gxf5 5.Bc1+ Kg6 6.Qg5+ Kf7 7.Qxf5+ Ke8 8.Qe6 Rh8 9.Qxc6+ Kf7 10.Qf3+ Kg6 11.Qe4+ Kg7 12.Qg4+ Kf8 13.Qf3+ Kg7 = (0.00) Depth: 12 00:00:39 30977kN 4...gxf5 5.Bc1+ Kg6 6.Qg5+ Kf7 7.Qxf5+ Ke8 8.Qe6 Rh8 9.Qxc6+ Kf7 10.Qf3+ Kg6 11.Qe4+ Kg7 12.Qg4+ Kf8 13.Qf3+ Kg7 = (0.00) Depth: 14 00:02:29 108828kN (Blass, Tel-aviv 22.09.2001) And then white has a plethora of tries, I can't find a >winning variation. For example 34. Bg7+ Kxg7 35. Qxe7+ ... >[D]r6r/4Q1k1/ppp3p1/q3pP2/2pP4/1bN5/1R4P1/6K1 b - - 0 35 >35...Kg8/h6 and black seems to hold on by a thread. Or 34. Bc1+ Kg8 35. Qxe7 >[D]r5k1/4Q2r/ppp3p1/q3pP2/2pP4/1bN5/1R4P1/2B3K1 w - - 0 36 >Rh7 and black seems to draw by a fraction of an inch again. >When backtracking I came to the conclusion that in: >[D]r3r1k1/4p2p/ppp3PB/q3p3/2pP1P2/1bN5/1R4P1/4Q1K1 b - - 0 30 >Black must avoid 30... hxg6, that should be a hard one. I have a hunch that >30... Kh8 might be the best move, avoiding the opening of the king position. > >MvH Dan Andersson Junior7's analysis on p800 New position r3r1k1/4p2p/ppp3PB/q3p3/2pP1P2/1bN5/1R4P1/4Q1K1 b - - 0 1 Analysis by Junior 7: 1...exd4 2.Qe6+ Kh8 3.g7# +- (#3) Depth: 3 00:00:00 1...e4 2.gxh7+ Kxh7 3.Qxe4+ µ (-1.12) Depth: 3 00:00:00 1kN 1...c5 2.gxh7+ Kxh7 µ (-1.15) Depth: 3 00:00:00 1kN 1...hxg6 2.fxe5 Red8 -+ (-1.43) Depth: 3 00:00:00 1kN 1...hxg6! -+ (-1.73) Depth: 6 00:00:00 3kN 1...hxg6 2.fxe5 Red8 3.Qg3 Kh7 4.Bg5 Qa1+ 5.Rb1 Qa3 -+ (-1.83) Depth: 9 00:00:00 99kN 1...hxg6 2.fxe5 Rad8 3.Qg3 Kh7 4.Rf2 Bd1 5.Qe3 Qa1 6.Rf7+ Kh8 -+ (-1.45) Depth: 12 00:00:05 4035kN 1...hxg6 2.Qg3 Kh7 3.f5 Rg8 4.Qh4 gxf5 5.Bg5+ Kg6 6.Bxe7 Raf8 7.Qg5+ Kh7 8.Qh4+ Kg7 9.Bxf8+ Rxf8 µ (-0.86) Depth: 15 00:03:29 153085kN 1...hxg6 2.Qg3 Kh7 3.f5 Rg8 4.Qh4 gxf5 5.Bc1+ Kg6 6.Qg5+ Kf7 7.Qxf5+ Ke8 8.Qe6 Rh8 9.Qxc6+ Kf7 10.Qf3+ Kg6 µ (-0.86) Depth: 16 00:06:11 267251kN (Blass, Tel-aviv 22.09.2001) After Kh8 Junior7's analysis New position r3r2k/4p2p/ppp3PB/q3p3/2pP1P2/1bN5/1R4P1/4Q1K1 w - - 0 1 Analysis by Junior 7: 2.dxe5 hxg6 3.Rb1 -+ (-1.55) Depth: 3 00:00:00 2.g7+ Kg8 3.Qxe5 Qxe5 = (0.06) Depth: 6 00:00:00 4kN 2.g7+ Kg8 3.Qxe5 Qxe5 = (0.06) Depth: 6 00:00:00 4kN 2.g7+ Kg8 3.Rb1 Red8 4.Ra1 Qb4 5.dxe5 Qc5+ 6.Kh2 Qd4 = (-0.10) Depth: 9 00:00:00 61kN 2.g7+! = (0.20) Depth: 12 00:00:01 572kN 2.g7+ Kg8 3.fxe5 e6 4.Rf2 Qb4 5.Rf1 Qa3 6.Qf2 Red8 ² (0.46) Depth: 15 00:00:16 10940kN 2.g7+! ± (0.76) Depth: 17 00:01:07 45382kN 2.g7+! Kg8 3.fxe5 e6 4.Qc1 Re7 5.Rf2 Rxg7 6.Bxg7 Kxg7 7.Qg5+ Kh8 8.Qf6+ Kg8 9.Qxe6+ Kh8 10.Qf6+ Kg8 11.Qf7+ ± (1.24) Depth: 17 00:01:52 75759kN (Blass, Tel-aviv 22.09.2001) After the moves 2.g7+ Kg8 3.fxe5 I get by Deep Fritz New position r3r1k1/4p1Pp/ppp4B/q3P3/2pP4/1bN5/1R4P1/4Q1K1 b - - 0 1 Analysis by Deep Fritz: 3...e6-- 4.Rf2 Bc2 5.Rxc2 Qb4 6.Qf1 Qb3 7.Rf2 Qb4 = (-0.06) Depth: 10/27 00:00:01 608kN 3...e6-- = (0.25) Depth: 11/29 00:00:02 1301kN 3...e6-- 4.Rf2 Bc2 5.Qf1 Bf5 6.Rxf5 Qb4 7.Na2 Qa3 8.Rf3 Qe7 ² (0.69) Depth: 11/35 00:00:03 1828kN 3...e6-- ± (1.00) Depth: 12/29 00:00:08 4903kN 3...e6-- 4.Rf2 Bc2 5.Qf1 Qa3 6.Rxc2 b5 7.Ne4 Qd3 8.Qxd3 cxd3 9.Rxc6 ± (1.16) Depth: 12/32 00:00:09 5553kN 3...e6 4.Rf2 Bc2 5.Rxc2 Re7 6.Rf2 Rxg7 7.Bxg7 Kxg7 8.Rf6 c5 +- (1.41) Depth: 13/36 00:00:44 29335kN 3...e6-- +- (1.72) Depth: 14/34 00:01:00 39163kN 3...e6-- 4.Rf2 Bc2 5.Qf1 Qa3 6.Rxc2 Ra7 7.Ne4 Rf7 8.Nf6+ Rxf6 9.exf6 +- (3.12) Depth: 14/39 00:01:14 48489kN 3...e6-- +- (3.44) Depth: 15/40 00:04:38 189386kN (Blass, Tel-aviv 22.09.2001) Uri
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