Author: Steven J. Brann
Date: 18:31:00 05/03/05
Go up one level in this thread
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]r1bb2k1/ppq2rp1/2p2BQ1/7N/1n2N3/7P/PPP3P1/2K2R2 w - - 0 6 > >6. Rf3!! (another humanish move, not easily found by the engines, though they >do. 6. Nxg7 is also possible, but unclear IMO) Nxa2+ 7. Kb1 Nc3+ 8. Bxc3 Bf5 9. >Nhf6+!! +- > >The position is from a recent thread here. A sacrifice I noticed immediately >though admittedly couldn't fully calculate at the time. A very aggressive and >IMO a very human move. Speculative initially, so possibly only the very >aggressive engines and ones that value king safety/attack very highly will find >it or attempt it. CM10th finds this one just a bit faster and seems to be happy with the result. Time Depth Score Positions Moves 0:00 1/5 0.00 52424 6.Ng5 Nxa2+ 7.Kb1 Nc3+ 8.bxc3 Qb6+ 9.Kc1 Qe3+ 10.Kb1 Qb6+ 0:00 1/6 0.00 104017 6.Ng5 Nxa2+ 7.Kb1 Nc3+ 8.bxc3 Qb6+ 9.Kc1 Qe3+ 10.Kb1 Qb6+ 0:01 1/7 0.00 262749 6.Ng5 Nxa2+ 7.Kb1 Nc3+ 8.bxc3 Qb6+ 9.Kc1 Qe3+ 10.Kb1 Qb6+ 0:02 1/7 1.18 509147 6.Nxg7 Nxa2+ 7.Kb1 Nc3+ 8.Nxc3 Bxf6 9.Nf5+ Kf8 10.Nh6 Bxc3 11.Qxf7+ Qxf7 12.Rxf7+ Ke8 13.bxc3 0:06 1/8 1.35 1601472 6.Nxg7 Nxa2+ 7.Kb1 Nc3+ 8.Nxc3 Bxf6 9.Nf5+ Rg7 10.Qe8+ Kh7 11.Qh5+ Kg8 12.Nh6+ Kh8 13.Rxf6 Kh7 0:17 1/9 1.88 4153728 6.Nxg7 Nxa2+ 7.Kb1 Nc3+ 8.Nxc3 Bxf6 9.Nf5+ Kh8 10.Nh6 Rg7 11.Qxf6 Kh7 12.Nf7 Qxf7 13.Qxf7 Rxf7 14.Rxf7+ Kg6 0:49 2/10 2.05 12749595 6.Nxg7 Nxa2+ 7.Kb1 Nc3+ 8.Nxc3 Bxf6 9.Nf5+ Kh8 10.Nh6 Rg7 11.Qxf6 Kh7 12.Nf7 Kg8 2:01 2/11 1.92 32639321 6.Nxg7 Nxa2+ 7.Kb1 Nc3+ 8.Nxc3 Bxf6 9.Nf5+ Kh8 10.Nh6 Rg7 11.Qxf6 Kh7 12.Nf7 Rxf7 13.Qxf7+ Qxf7 14.Rxf7+ Kg6 15.Re7 3:31 2/11 4.20 54942750 6.Rf3 Nxa2+ 7.Kb1 Nc3+ 8.Bxc3 Bf5 9.Rxf5 Rxf5 10.Qxf5 Qf7 11.Nxg7 Qxf5 12.Nxf5 Bc7 13.Nf6+ Kf7 14.g4 5:38 2/12 4.12 91752771 6.Rf3 Nxa2+ 7.Kb1 Nc3+ 8.Bxc3 Bf5 9.Rxf5 Rxf5 10.Qxf5 Qf7 11.Nxg7 Be7 12.Qxf7+ Kxf7 13.Nf5 Rd8 14.Nxe7 Kxe7 Steve
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