Author: David Dahlem
Date: 13:42:36 08/07/04
Go up one level in this thread
On August 07, 2004 at 14:03:52, Rob Basham wrote: >On August 07, 2004 at 11:17:59, David Dahlem wrote: > >>On August 07, 2004 at 08:51:51, Thomas Lagershausen wrote: >> >>>[D]3r2rk/3n1pp1/2p1b2p/3q3P/pp1PNQ2/2P2P2/PP6/KB4RR w - - 0 29 >>> >>>In this speedchessgame in round two of the fide-wcc 2004 the IM Neelotpal >>>(2457)found with 29.Rg1-g6 !! with the thread to sacrifice the rook on h6 the >>>strongest move to show that white is not(!) worse in this position. >>> >>>I bet that every computer of the world wouldn´t have found this in a compareable >>>time. >>> >>>So this is a lesson in tactics where computers can learn form human players. >>> >>>Do you agree? >>> >>>TL >> >>Forcing this idea with these moves: >> >>29.Rg6 fxg6 30.hxg6 Rge8 31.Rxh6+ Kg8 32.Rh7 >> >>We get this position: >> >>[D]3rr1k1/3n2pR/2p1b1P1/3q4/pp1PNQ2/2P2P2/PP6/KB6 b - - 2 32 >> >>Shredder 8 UCI1: >> 1 00:00 -1.77 32. ... bxc3 >> 2 00:00 -1.93 32. ... bxc3 33.Nxc3 Qc4 >> 2- 00:00 -1.94 32. ... Nf8 33.Qg4 Bxg4 >> 2 00:00 -2.21 32. ... Nf8 33.Rh4 Nxg6 >> 3 00:00 -2.21 32. ... Nf8 33.Rh4 Nxg6 >> 4- 00:00 -2.46 32. ... Nf8 33.Rh4 Nxg6 34.cxb4 Nxf4 >> 4- 00:00 -2.96 32. ... Nf8 33.Rh4 Nxg6 34.Ng5 Nxf4 >> 4 00:00 -3.24 32. ... Nf8 33.Rh2 Nxg6 34.Qc7 bxc3 >> 5+ 00:00 -2.96 32. ... Nf8 33.Nf6+ gxf6 34.Qxf6 Nd7 35.Rg7+ Kh8 >> 5+ 00:00 -2.30 32. ... Nf8 33.Nf6+ gxf6 34.Qxf6 Qxd4 35.cxd4 Nxh7 >> 5 00:00 8.70 32. ... Nf8 33.Nf6+ gxf6 34.Qxf6 Qxa2+ 35.Bxa2 Nxh7 36.Bxe6+ >>Rxe6 37.Qxe6+ Kg7 38.gxh7 bxc3 39.bxc3 >> 5- 00:00 8.69 32. ... Qf5 33.Qh4 Kf8 34.Rh8+ Bg8 35.Rxg8+ Kxg8 >> 5- 00:00 8.34 32. ... Qf5 33.Qh4 Kf8 34.Rh8+ Bg8 35.Rxg8+ Kxg8 >> 5 00:00 -1.08 32. ... Qf5 33.Qh4 Kf8 34.Rh8+ Bg8 35.Qh7 Qd5 36.cxb4 >> 5- 00:00 -1.09 32. ... bxc3 33.Nxc3 Qc4 34.Rh8+ Kxh8 35.Qh4+ Kg8 36.Qh8+ >>Kxh8 >> 5- 00:00 -1.44 32. ... bxc3 33.Nxc3 Qc4 34.Rh8+ Kxh8 35.Qh4+ Kg8 36.Qh8+ >>Kxh8 >> 5 00:00 -2.64 32. ... bxc3 33.Nxc3 Qc4 34.Qh4 Kf8 35.Ne4 Qxd4 36.Rh8+ Bg8 >>37.Qh7 >> 5- 00:00 -2.65 32. ... a3 33.Qh4 axb2+ 34.Kxb2 bxc3+ 35.Ka1 Kf8 36.Nxc3 Qxf3 >>37.Qe7+ Kxe7 >> 5 00:00 -2.82 32. ... a3 33.bxa3 Nf8 34.Rh4 Nxg6 >> 6+ 00:00 -2.57 32. ... a3 33.Qh4 axb2+ 34.Kxb2 bxc3+ 35.Ka1 Kf8 36.Qf4+ Nf6 >>37.Nxf6 Qf5 38.Bxf5 >> 6+ 00:00 -2.07 32. ... a3 33.Qh4 axb2+ 34.Kxb2 bxc3+ 35.Ka1 Qxa2+ 36.Bxa2 c2 >>37.Bxe6+ Kf8 38.Bxd7 >> 6 00:00 -1.98 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Rh5 bxc3+ >>37.Ka1 Nf6 38.Qxf5 Qxd4 >> 7+ 00:01 -1.73 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Rh5 bxc3+ >>37.Ka1 Nf6 38.Qxf5 Qxf5 39.Rxf5 >> 7 00:01 -1.49 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Rh5 bxc3+ >>37.Ka1 Nf6 38.Nxf6 gxf6 39.Bxf5 Qxd4 >> 8 00:02 -1.63 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Rh5 bxc3+ >>37.Ka1 Qxd4 38.Qxf5+ Nf6 39.Rh8+ Ke7 40.Rh4 >> 9+ 00:04 -1.38 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Nd6 bxc3+ >>37.Ka1 c2 38.Rh8+ Qg8 39.Rxg8+ Ke7 40.Nxf5+ Ke6 41.Bxc2 >> 9 00:06 -1.30 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Nd6 bxc3+ >>37.Ka1 c2 38.Rh8+ Ke7 39.Nxf5+ Qxf5 40.Qxf5 cxb1Q+ 41.Kxb1 Rxh8 >>10 00:13 -1.19 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Nd6 bxc3+ >>37.Ka1 c2 38.Rh8+ Ke7 39.Nxf5+ Qxf5 40.Qxf5 cxb1Q+ 41.Kxb1 Rb8+ 42.Kc2 Rxh8 >>11+ 00:23 -0.94 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Qf4+ Bf5 36.Rh8+ Ke7 >>37.Qh4+ Ke6 38.Ng5+ Kd6 39.Qf4+ Ke7 40.Rxe8+ Kxe8 41.Qxf5 bxc3+ >>11+ 00:32 -0.44 32. ... a3 33.Qh4 axb2+ 34.Kxb2 Kf8 35.Rxg7 bxc3+ 36.Ka1 Bg4 >>37.Qh8+ Qg8 38.Rxg8+ Ke7 >>11 01:03 3.24 32. ... a3 33.Qh4 Kf8 34.Rxg7 bxc3 35.bxc3 Bg8 36.Rh7 Bxh7 >>37.Qh6+ Ke7 38.Qxh7+ Qf7 39.gxf7 Rg8 >>11- 01:05 3.23 32. ... bxc3 33.Nxc3 Qc4 34.Qh4 Kf8 35.Rxg7 Bg8 36.Qh8 Nf6 >>37.Rxg8+ Nxg8 38.g7+ >>11- 01:06 2.88 32. ... bxc3 33.Nxc3 Qc4 34.Qh4 Kf8 35.Rxg7 a3 36.Qh8+ Bg8 >>37.Rf7+ Qxf7 38.bxa3 Qxf3 39.g7+ Ke7 40.Nd5+ cxd5 41.Qh4+ Kd6 42.Qf4+ >>11 01:08 2.75 32. ... bxc3 33.Nxc3 Qc4 34.Qh4 Kf8 35.Rxg7 a3 36.Qh8+ Bg8 >>37.Rf7+ Qxf7 38.gxf7 axb2+ 39.Kxb2 Rb8+ 40.Kc2 Kxf7 41.Ne4 Ke6 42.Qh6+ >>11- 01:10 2.74 32. ... Bf5 33.Qh2 Bxg6 34.Rh8+ Kf7 35.Nd6+ Ke7 36.Nxe8 Bxe8 >>37.Qh4+ Nf6 38.Rh7 >>11- 01:11 2.39 32. ... Bf5 33.Qh2 Bxg6 34.Rh8+ Kf7 35.Nd6+ Ke7 36.Nxe8 Bxe8 >>37.Qh4+ Nf6 38.Rh7 Qxf3 >>11 01:23 1.42 32. ... Bf5 33.Qh4 Bxg6 34.c4 Bxh7 35.cxd5 Bxe4 36.Bxe4 Nf6 >>37.Bg6 cxd5 38.Bxe8 >>11- 01:28 1.41 32. ... Rb8 33.Qh4 Kf8 34.Qf4+ Bf5 35.Qxf5+ Qxf5 36.Rh8+ Ke7 >>37.Rxe8+ Rxe8 38.Nf6 >>11- 01:28 1.06 32. ... Rb8 33.Qh4 Kf8 34.Qf4+ Bf5 35.Qxf5+ Qxf5 36.Rh8+ Ke7 >>37.Rxe8+ Rxe8 38.Ng3 >>11 01:32 1.06 32. ... Rb8 33.Qh4 Kf8 34.Rxg7 bxc3 35.Qh8+ Bg8 36.Nxc3 Qxa2+ >>37.Bxa2 Re1+ 38.Bb1 >>12+ 01:37 1.31 32. ... Rb8 33.Qh4 Kf8 34.Rxg7 bxc3 35.Qh8+ Bg8 36.Nxc3 Qxa2+ >>37.Bxa2 Re1+ 38.Bb1 Rxb1+ 39.Kxb1 Rxb2+ >>12+ 01:37 1.81 32. ... Rb8 33.Qh4 Kf8 34.Rxg7 bxc3 35.Qh8+ Bg8 36.Nxc3 Qxa2+ >>37.Bxa2 Re1+ 38.Bb1 Rxb1+ 39.Kxb1 Rxb2+ >>12 01:47 2.74 32. ... Rb8 33.Qh4 Kf8 34.Rxg7 Kxg7 35.Qh7+ Kf8 36.g7+ Ke7 >>37.g8Q+ Kd8 38.Qh4+ Kc7 39.Qgg3+ Kb6 40.Qhh2 Rec8 41.cxb4 Qxd4 42.Qd6 Qxd6 >>43.Qxd6 >>12- 01:54 2.73 32. ... Bf5 33.Qh4 Bxg6 34.c4 Bxh7 35.cxd5 Bxe4 36.Bxe4 Nf6 >>37.Bg6 cxd5 38.Bxe8 >>12- 01:57 2.38 32. ... Bf5 33.Qh4 Bxg6 34.c4 Bxh7 35.cxd5 Bxe4 36.Bxe4 Nf6 >>37.Bg6 cxd5 38.Qxf6 >>12 02:05 1.40 32. ... Bf5 33.Qh4 Bxg6 34.c4 Bxh7 35.cxd5 Bxe4 36.Bxe4 Nf6 >>37.Bg6 cxd5 38.Bxe8 Rxe8 39.Kb1 Re2 40.Qg5 Kf8 >>13 02:37 1.28 32. ... Bf5 33.Qh4 Bxg6 34.c4 Bxh7 35.cxd5 Bxe4 36.Bxe4 Nf6 >>37.Bg6 cxd5 38.Bxe8 Rxe8 39.Kb1 Re2 40.Qg5 Kf7 41.Kc1 >> >>Regards >>Dave > >That's my point! Thanks for posting! > >If by move 32 white showed a plus 7.00 or 8.00 score, then I would say that >29. Rg6 is OK....and worth trying! > I have to disagree. What other line from the root position will computers show that even comes close to this advantage for White? Regards Dave >As we can now clearly see, Only a plus 1.28 is not winning for white! > >Rob
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