Author: John Merlino
Date: 13:27:57 12/27/05
Go up one level in this thread
On December 26, 2005 at 08:36:35, Albert Silver wrote: >This position and combination took place in a match against Junior 8: > >[D]2r3k1/2qb4/p3prp1/3p2b1/1B1P2P1/1Q6/1P2NPK1/3RR3 b - - 0 32 > >As a human, being told "Black to play and win" makes finding the key move very >easy, so all I can suggest is to try and work out the correct follow-up. > >Some engines shuld have more trouble than others on this all the same. At least >according to some preliminary checking I did. On my computer, Rybka spotted it >in 5 seconds BTW. > > Albert CM9_R1 on a P4-2.4 does pretty well here, finding the move in thirty seconds: Time Depth Score Positions Moves 0:00 1/3 -1.22 1501 32...Bb5 33.Qg3 Qxg3+ 34.Nxg3 Rc2 0:00 1/4 -1.13 3835 32...Bb5 33.Qg3 Qxg3+ 34.Kxg3 Rc2 35.f4 Rxe2 36.fxg5 0:00 1/5 -1.10 19597 32...Bb5 33.Qg3 Qc2 34.Nc3 Qxb2 35.Nxb5 Qxb4 0:00 1/6 -1.10 88820 32...Bb5 33.Qg3 Qc2 34.Nc3 Qxb2 35.Nxb5 Qxb4 0:02 1/7 -1.91 416956 32...Bb5 33.f4 Bxf4 34.Nc3 Bc4 35.Qa3 Rb8 0:04 1/8 -2.13 687438 32...Bb5 33.f4 Bxf4 34.Nc3 Bc4 35.Qa3 Re8 36.b3 0:08 1/9 -1.88 1485484 32...Bb5 33.f4 Bxf4 34.Nc3 g5 35.Bc5 Bc4 36.Qb6 Qxb6 37.Bxb6 0:22 1/10 -2.12 4274167 32...Bb5 33.f4 Bxf4 34.Nc3 g5 35.Nxb5 Qc2+ 36.Qxc2 Rxc2+ 37.Kg1 axb5 38.Be7 Rh6 0:30 1/10 -2.96 6147988 32...Rxf2+ 33.Kxf2 Qh2+ 34.Kf1 Qh1+ 35.Ng1 Bb5+ 36.Rd3 Bh4 37.Re2 Rc1+ 38.Be1 Bxe1 39.Rxe1 Bxd3+ 40.Qxd3 Rxe1+ 41.Kxe1 Qxg1+ 42.Kd2 Qxg4 0:48 1/11 -2.96 10714168 32...Rxf2+ 33.Kxf2 Qh2+ 34.Kf1 Qh1+ 35.Ng1 Bb5+ 36.Rd3 Bh4 37.Re2 Rc1+ 38.Be1 Bxe1 39.Rxe1 Bxd3+ 40.Qxd3 Rxe1+ 41.Kxe1 Qxg1+ 42.Kd2 Qxg4 1:46 1/12 -2.93 24447251 32...Rxf2+ 33.Kxf2 Qh2+ 34.Kf1 Qh1+ 35.Ng1 Bb5+ 36.Rd3 Bh4 37.Re2 Rc1+ 38.Be1 Bxe1 39.Rxe1 Bxd3+ 40.Qxd3 Rxe1+ 41.Kxe1 Qxg1+ 42.Kd2 Qxg4 43.Qe3 jm
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