Author: Eelco de Groot
Date: 03:29:48 05/04/05
Go up one level in this thread
On May 03, 2005 at 21:55:49, Steven J. Brann wrote: >On May 03, 2005 at 21:31:00, Steven J. Brann wrote: > >>On May 03, 2005 at 19:34:02, Tom Brake wrote: >> >>>[d]r1b2rk1/ppq1b1pp/n1p2p2/7R/3BNN2/6QP/PPP3P1/2K4R w - - 0 1 >>> >>>1. Rxh7!!!! Kxh7 2. Qg6+ Kg8 3. Nh5 Bd8 4. Rf1 Rf7 5. Bxf6! Nb4 ( seen by the >>>silicon, turns out it's literally the only move that doesn't lose on the spot, >>>and also threatens perpetual after Nxa2+, Nc3+ due to the exposed White king. >>>and so White almost has to play ... ) >> >>CM10th with a custom personality on a P4 3.4G HT machine struggles a bit with >>this one but ultimately gets there. >> >>Time Depth Score Positions Moves >>0:00 1/5 0.44 27950 1.Qb3+ Rf7 2.Rf1 Qd7 3.Ne2 Qe6 >>0:00 1/6 0.54 97833 1.Qb3+ Rf7 2.Rf1 Qd7 3.Rd1 Bd6 4.g3 >>0:01 1/7 0.37 290280 1.Qb3+ Rf7 2.Rf1 Qd7 3.Bc3 f5 4.Ng5 >> Bxg5 5.Rxg5 >>0:05 1/8 0.49 1161429 1.Qb3+ Rf7 2.Rf1 Qd7 3.Bc3 Qe8 >> 4.Kb1 g6 5.Rh6 >>0:12 1/9 0.39 2979906 1.Qb3+ Rf7 2.Rf1 Qd7 3.Be3 b6 4.Kb1 >> Bb4 5.a3 Bf8 >>0:36 1/9 0.97 8545172 1.Rf1 c5 2.Qd3 Nb4 3.Qc4+ Rf7 4.Bxc5 >> f5 5.Qxb4 fxe4 6.Bxe7 Qxe7 >>1:17 2/10 1.01 18949589 1.Rf1 Bd8 2.Qd3 h6 3.Ng6 Rf7 4.Qc4 >> b5 5.Qb3 Qd7 >>3:26 2/11 1.58 52469020 1.Rf1 Bd8 2.Rxh7 Bf5 3.Ng6 Kxh7 >> 4.Nxf8+ Kg8 5.Nd6 Bxh3 6.gxh3 Kxf8 >>7:19 2/12 1.51 116850970 1.Rf1 Bd8 2.Re1 Bd7 3.Qb3+ Rf7 >> 4.g3 Rc8 5.Rxh7 Bf5 6.Rh5 Qa5 7.Rd1 >>10:34 2/12 2.04 163294994 1.Re1 c5 2.Bc3 Bd6 3.Nxd6 Qxd6 >> 4.Qh4 h6 5.Rxh6 gxh6 6.Qg3+ Bg4 >> 7.Qxg4+ Kh8 8.Ng6+ Kg8 9.Nxf8+ Kxf8 > >[D]r1b2rk1/ppq1b1pR/n1p2p2/8/3BNN2/6QP/PPP3P1/2K4R b - - 0 1 > >Time Depth Score Positions Moves >0:00 1/5 -4.17 45809 1...Kxh7 2.Qg6+ Kh8 3.Qh5+ Kg8 > 4.Ng6 Re8 5.Rd1 >0:00 1/6 -3.87 104164 1...Kxh7 2.Qg6+ Kh8 3.Nh5 Bb4 4.Nhxf6 > gxf6 5.Bxf6+ Rxf6 6.Nxf6 >0:01 1/7 -2.67 238450 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Rf7 4.Rf1 > f5 5.Nxg7 f4 >0:01 1/8 -1.62 429640 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Rf7 4.Rf1 > Kf8 5.Qh7 Bd6 6.Nxd6 Qxd6 7.Qh8+ > Ke7 8.Nxg7 >0:03 1/9 -1.62 1048357 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Rf7 4.Rf1 > Kf8 5.Qh7 Bd6 6.Nxd6 Qxd6 7.Qh8+ > Ke7 8.Nxg7 >0:10 2/10 -1.50 2892935 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Bd8 4.Rf1 > c5 5.Nexf6+ Bxf6 6.Nxf6+ Rxf6 7.Bxf6 > Qf7 8.Qg3 >0:26 2/11 -0.92 7659032 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Bd8 4.Rf1 > c5 5.Nexf6+ Bxf6 6.Nxf6+ Rxf6 7.Qe8+ > Kh7 8.Bxf6 Qd7 9.Qe4+ Kg8 >1:18 2/12 -0.53 22978345 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Bd8 4.Rf1 > c5 5.Rxf6 Rf7 6.Nxg7 Bxf6 7.Ne6+ > Bg7 8.Nxc7 Nxc7 9.Bxg7 Rxg7 >3:46 3/13 0.00 68426944 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Bd8 4.Rf1 > Rf7 5.Nxg7 Rxg7 6.Nxf6+ Bxf6 7.Qe8+ > Kh7 8.Qh5+ Kg8 9.Qe8+ >13:45 3/14 1.11 239975192 1...Kxh7 2.Qg6+ Kg8 3.Nh5 Bd8 4.Rf1 > Rf7 5.Bxf6 Nb4 6.Nxg7 Nxa2+ 7.Kb1 > Nc3+ 8.Nxc3 Bxf6 9.Nf5+ Kf8 10.Nh6 > Bxc3 11.Qxf7+ Qxf7 12.Rxf7+ Ke8 > 13.bxc3 > >After forcing Rxh7, CM10th sees a lower score for white than Re1 above. Perhaps >it's one of those situations where the beast just needs more grunt time than I >was willing to invest in it. > >Steve Pro Deo Betazoid also does not go for Rxh7 in reasonable amount of time. On Celeron 500 MHz 28 Mb HT: 00:00:46.5 0,93 9 7127393 Qb3+ Rf7 Rf1 Bd6 Nd3 b5 Nxd6 Qxd6 Ne5 Be6 Nxf7 00:01:14.5 1,00 9 11644261 Re1 b5 Qb3+ Rf7 Nd3 h6 g4 00:03:34.5 1,02 10 34664815 Re1 b6 Bxf6 Bxf6 00:03:54.1 1,11 10 37890464 Qb3+ Rf7 Rf1 Bd6 Nd3 b5 Bxf6 Nc5 Ndxc5 00:09:03.6 0,90 11 82315234 Qb3+ Rf7 Rf1 Qd8 Rd1 00:14:25.6 1,14 11 135510813 Re1 c5 Bc3 Bd8 Rd1 Bd7 Qh4 h6 Rhd5 Bc6 00:51:55.0 1,35 12 513795925 Re1 Rb8 Qh4 06:20:07.4 1,74 13 3897779195 Re1 c5 Qh4 cxd4 Nd5 But the score for Black does go down after forcing 1. Rxh7 Kxh7 2. Qg6+ Kg8 3. Nh5. But the lines are probably very complex! [D]r1b2rk1/ppq1b1p1/n1p2pQ1/7N/3BN3/7P/PPP3P1/2K4R b - - 3 1 00:01:28.5 -0,26 10 14392360 Rf7 Rf1 Kf8 Qh7 Bd6 Nxd6 Qxd6 Qh8+ Ke7 Re1+ Be6 Qxa8 Qxd4 Qxb7+ 00:02:15.2 0,00 10 22318956 Bd8 Rf1 Nb4 Ng5 fxg5 00:05:15.4 -0,21 11 52615644 Bd8 Rf1 b5 Nexf6+ Bxf6 00:42:31.6 -0,80 12 448209121 Bd8 Rf1 c5 Nhxf6+ Bxf6 Nxf6+ Rxf6 Qe8+ 02:16:51.0 -0,98 13 1449085249 Bd8 Rf1 c5 Rxf6 Rf7 Be5
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