Author: Uri Blass
Date: 14:01:19 09/23/01
Go up one level in this thread
On September 23, 2001 at 14:35:15, Dan Andersson wrote: >We discovered gxf5 is a draw also, but after the reply Bf8+ black has many >chances to go wrong still. Have you tried: >>[D]r3r1k1/4p2p/ppp3PB/q3p3/2pP1P2/1bN5/1R4P1/4Q1K1 b - - 0 30 > >>Black must avoid 30... hxg6, that should be a hard one. >>MvH Dan Andersson I asked Deep Fritz for the next best move for black instead of 30...hxg6 Deep Fritz believes that white has a clear advantage of 0.91 pawns and that the next best is Rf8 Here is the analysis: New position r3r1k1/4p2p/ppp3PB/q3p3/2pP1P2/1bN5/1R4P1/4Q1K1 b - - 0 1 Analysis by Deep Fritz: 1...Qxc3-- µ (-1.28) Depth: 1/3 00:00:00 1...Qxc3-- 2.Qxc3 ± (0.97) Depth: 1/9 00:00:00 1...exd4! ³ (-0.69) Depth: 1/9 00:00:00 1...exd4! 2.Qe6+ Kh8 -+ (-4.94) Depth: 1/9 00:00:00 1...exd4-- +- (#2) Depth: 2/7 00:00:00 1...exd4-- +- (#2) Depth: 2/8 00:00:00 1...hxg6! ± (1.19) Depth: 2/8 00:00:00 1...hxg6! 2.fxe5 -+ (-3.84) Depth: 2/8 00:00:00 1...hxg6 2.fxe5 Red8 -+ (-3.97) Depth: 3/9 00:00:00 1kN 1...Red8! -+ (-4.00) Depth: 3/13 00:00:00 2kN 1...Red8! 2.fxe5 -+ (-4.03) Depth: 3/14 00:00:00 3kN 1...Red8 2.Qe3 Rxd4 3.gxh7+ Kxh7 4.fxe5 -+ (-3.94) Depth: 4/15 00:00:00 11kN 1...Red8 2.fxe5 c5 3.d5 Rxd5 4.gxh7+ Kxh7 -+ (-3.97) Depth: 5/19 00:00:00 38kN 1...Red8-- -+ (-3.66) Depth: 6/23 00:00:00 74kN 1...Red8-- 2.Qg3 Qa1+ 3.Rb1 Qxb1+ -+ (-3.19) Depth: 6/24 00:00:00 109kN 1...hxg6! -+ (-3.22) Depth: 6/24 00:00:00 111kN 1...hxg6! 2.fxe5 Red8 3.Qg3 Kh7 4.Bg5 Rxd4 -+ (-3.75) Depth: 6/24 00:00:00 121kN 1...hxg6 2.fxe5 Rad8 3.Qg3 Kh7 4.Qh3 Rh8 -+ (-3.63) Depth: 7/22 00:00:00 160kN 1...hxg6! -+ (-3.94) Depth: 8/25 00:00:00 428kN 1...hxg6 2.Re2 b5 3.Rxe5 Qa3 4.Re6 b4 5.Rxg6+ Kh7 6.Nb1 -+ (-3.84) Depth: 9/25 00:00:01 1092kN 1...hxg6 2.Re2 b5 3.Rxe5 Qa3 4.Kh2 Rab8 5.Qe4 Qd6 6.Re6 -+ (-3.72) Depth: 10/25 00:00:03 1893kN 1...hxg6 2.fxe5 c5 3.d5 b5 4.e6 Kh7 5.Be3 b4 6.Ne4 Qa3 7.Qh4+ -+ (-3.50) Depth: 11/29 00:00:08 5309kN Next best: 1...Qxc3-- -+ (-3.72) Depth: 1/2 00:00:12 1...Qxc3-- 2.Qxc3 ± (0.97) Depth: 1/9 00:00:12 1...Rf8! ² (0.56) Depth: 1/9 00:00:12 1...Rf8! 2.Bxf8 -+ (-1.47) Depth: 1/9 00:00:12 1...Red8! -+ (-2.13) Depth: 1/9 00:00:12 1...Red8! 2.Qg3 -+ (-3.69) Depth: 1/9 00:00:12 1...Red8 2.fxe5 -+ (-3.53) Depth: 2/9 00:00:12 1...Red8 2.Qe4 Kh8 -+ (-3.28) Depth: 3/12 00:00:12 1kN 1...Reb8! -+ (-3.31) Depth: 3/13 00:00:12 2kN 1...Reb8! 2.fxe5 hxg6 3.Qg3 -+ (-3.78) Depth: 3/13 00:00:12 2kN 1...Reb8 2.fxe5 hxg6 3.Qg3 -+ (-3.50) Depth: 4/18 00:00:12 4kN 1...Red8! -+ (-3.53) Depth: 4/18 00:00:12 5kN 1...Red8! 2.dxe5 Qc5+ 3.Kh2 hxg6 -+ (-3.88) Depth: 4/18 00:00:12 9kN 1...Red8-- -+ (-3.50) Depth: 5/16 00:00:12 10kN 1...Red8-- -+ (-3.50) Depth: 5/21 00:00:12 12kN 1...Red8-- -+ (-3.19) Depth: 6/21 00:00:12 28kN 1...Red8-- -+ (-3.19) Depth: 6/24 00:00:12 32kN 1...Kh8! -+ (-3.22) Depth: 6/24 00:00:12 157kN 1...Kh8! 2.g7+ Kg8 3.dxe5 Qa3 4.Qd2 Red8 -+ (-3.38) Depth: 6/24 00:00:12 179kN 1...Kh8 2.g7+ Kg8 3.fxe5 Red8 4.Rf2 Qb4 5.Qe3 -+ (-3.38) Depth: 7/21 00:00:12 233kN 1...Kh8 2.fxe5 hxg6 3.Qh4 Ra7 4.Bd2+ Kg8 -+ (-3.41) Depth: 8/23 00:00:13 700kN 1...Kh8-- -+ (-3.09) Depth: 9/23 00:00:13 918kN 1...Kh8-- -+ (-3.09) Depth: 9/25 00:00:13 1187kN 1...Kh8-- -+ (-2.78) Depth: 10/25 00:00:15 2074kN 1...Kh8-- 2.gxh7 Ra7 3.fxe5 Rd8 4.e6 Qh5 5.Bf4 Qg6 6.Be5+ Kxh7 7.Qh4+ -+ (-2.63) Depth: 10/31 00:00:19 4602kN 1...Kh8-- -+ (-2.31) Depth: 11/29 00:00:25 8577kN 1...Kh8-- 2.Qh4 Rg8 3.g7+ Rxg7 4.Bxg7+ Kg8 5.Bxe5 Qxc3 6.Qxe7 Qg3 7.Qe6+ µ (-1.03) Depth: 11/32 00:00:39 18241kN 1...e6! µ (-1.06) Depth: 11/33 00:00:49 24792kN 1...e6! 2.Qg3 Kh8 3.fxe5 c5 4.g7+ Kg8 5.Rf2 µ (-1.25) Depth: 11/33 00:01:01 33112kN 1...e4! µ (-1.28) Depth: 11/34 00:01:11 39884kN 1...e4! 2.Qxe4 e6 3.gxh7+ Kf7 4.Qxc6 Kg6 5.h8Q Rxh8 6.Qxe6+ Kh7 7.Qh3 µ (-1.34) Depth: 11/34 00:01:12 40674kN 1...e4 2.Qxe4 e6 3.gxh7+ Kf7 4.Qxc6 Kg6 5.h8Q Rxh8 6.Qxe6+ Kh7 7.Qh3 µ (-1.31) Depth: 12/31 00:01:28 50376kN 1...e6! µ (-1.34) Depth: 12/36 00:01:49 65617kN 1...e6! 2.Qg3 Ra7 3.Ne4 Qa1+ 4.Kh2 Rf8 5.gxh7+ Kh8 6.Nf6 Rxh7 7.Qg6 -+ (-1.97) Depth: 12/36 00:02:21 85826kN 1...e6-- -+ (-1.66) Depth: 13/35 00:02:45 102376kN 1...e6-- 2.Qg3 Kh8 3.fxe5 hxg6 4.Qxg6 Rg8 5.Qh5 Bd1 6.Nxd1 Qe1+ 7.Kh2 = (0.06) Depth: 13/39 00:03:44 145545kN 1...Kh8! = (0.03) Depth: 13/39 00:04:23 173593kN 1...e4! = (0.00) Depth: 13/39 00:05:44 227980kN 1...e4! 2.Qxe4 e6 3.gxh7+ Kf7 4.Qxc6 Qxc3 5.Qb7+ Re7 6.Qxa8 Qxd4+ 7.Rf2 = (-0.06) Depth: 13/39 00:06:16 249054kN 1...e4-- = (0.25) Depth: 14/36 00:07:03 280774kN 1...e4-- = (0.25) Depth: 14/40 00:08:24 334145kN 1...Rf8! = (0.22) Depth: 14/40 00:12:11 491104kN 1...Rf8! 2.Qg3 Rf6 3.gxh7+ Kf7 4.Qg7+ Ke6 5.Qg4+ Rf5 6.Qg6+ Rf6 7.Qg4+ = (0.00) Depth: 14/40 00:13:15 537481kN 1...Rf8-- ² (0.47) Depth: 15/39 00:22:45 913020kN 1...Rf8-- 2.Qg3 Rf6 3.gxh7+ Kf7 4.Qg7+ Ke6 5.Qg4+ Rf5 6.Re2 Qxc3 7.Rxe5+ ± (0.91) Depth: 15/46 00:27:44 1123020kN (Blass, Tel-aviv 23.09.2001) Uri
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