Author: Bryan Hofmann
Date: 08:21:53 05/09/04
Go up one level in this thread
On May 09, 2004 at 00:31:07, John Merlino wrote: >On May 08, 2004 at 08:54:55, Bryan Hofmann wrote: > >>[D]8/5k1p/3p2r1/PP3p2/3Rn3/B1r4P/1R5K/8 w - - 1 49 >> >>In move 49 Tao finds Rxe4 at PLY 9 in only 10 seconds. Most other engines take >>much longer and would have lost this game. I would like to see what the >>commercial engines do in this position. (game PGN is below round 13) > >CM_SKR on an AMD 2500+ needs 0:32 > >Time Depth Score Positions Moves >0:00 1/3 0.56 1693 49.Bb4 Rf3 50.a6 Ke6 >0:00 1/4 0.77 7902 49.Bb4 Ng5 50.Rd1 Rxh3+ 51.Kg2 > Ke7 52.a6 >0:00 1/5 0.15 17168 49.Bb4 Ng5 50.Rd1 Rxh3+ 51.Kg2 > Rh4 52.b6 Ne4+ 53.Kf1 >0:00 1/6 0.11 43754 49.Bb4 Ng5 50.Rd1 Rxh3+ 51.Kg2 > Rh4 52.Be1 Ne4+ 53.Kf1 Rh1+ 54.Ke2 >0:00 1/7 0.28 127054 49.Bb4 Ng5 50.Rd1 Rxh3+ 51.Kg2 > Rh4 52.Be1 Ne4+ 53.Kf3 Rh3+ 54.Kf4 > Ke6 >0:01 1/8 0.00 353832 49.Bb4 Ng5 50.Rf2 Nf3+ 51.Rxf3 > Rxf3 52.Bxd6 Rf2+ 53.Kh1 Rf1+ 54.Kh2 > Rf2+ >0:04 1/9 0.00 870926 49.Bb4 Ng5 50.Rf2 Nf3+ 51.Rxf3 > Rxf3 52.Bxd6 Rf2+ 53.Kh1 Rf1+ 54.Kh2 > Rf2+ >0:08 1/10 0.00 1877613 49.Bb4 Ng5 50.Rf2 Nf3+ 51.Rxf3 > Rxf3 52.Bxd6 Rf2+ 53.Kh1 Rf1+ 54.Kh2 > Rf2+ >0:19 1/11 0.00 4340706 49.Bb4 Ng5 50.Rf2 Nf3+ 51.Rxf3 > Rxf3 52.Bxd6 Rf2+ 53.Kh1 Rf1+ 54.Kh2 > Rf2+ >0:32 1/11 0.49 7385879 49.Rxe4 fxe4 50.Bb4 Rc1 51.b6 Ke6 > 52.b7 Rg8 53.a6 Ra1 54.Bd2 Rb8 > 55.Rb6 Kd7 >0:53 2/12 0.49 12369305 49.Rxe4 fxe4 50.Bb4 Rc1 51.b6 Ke6 > 52.b7 Rg8 53.a6 Ra1 54.Bd2 Rb8 > 55.Rb6 Kd7 > >>[D]r1q3k1/pp1R1pb1/2n1r2p/3Q2p1/2P5/1P4B1/P4PPP/2KN3R b - - 6 22 >> >>Here in move 22 Tao finds a5 at PLY 5 in only 2 seconds. Most engines select b5 >>in this position but when the a5 move is played against them the see far greater >>trouble in the score. (game PGN is below round 2) > >CM_SKR waffles between b5 and Qe8: > >Time Depth Score Positions Moves >0:00 1/6 0.62 58234 22...Re7 23.Rxe7 Nxe7 24.Qd3 Qf5 > 25.Qxf5 Nxf5 26.Ne3 Nd4 >0:00 1/6 0.41 84445 22...b6 23.Rc7 Qe8 24.Qd7 Rd8 25.Qxe8+ > Rdxe8 26.Rd7 >0:01 1/7 0.51 212886 22...b6 23.Ne3 Nb4 24.Qd2 Nxa2+ > 25.Kb1 Nc3+ 26.Kc2 Ne4 >0:01 1/7 0.40 243032 22...Re7 23.Rxe7 Nxe7 24.Qd3 Nf5 > 25.Nc3 Qc5 26.Kb1 Re8 >0:02 1/8 0.60 360730 22...Re7 23.Rxe7 Nxe7 24.Qd2 Nf5 > 25.Re1 Qc5 26.Kb1 Nxg3 27.fxg3 >0:02 1/8 0.54 505447 22...b6 23.Ne3 Nb4 24.Qb7 Nxa2+ > 25.Kb1 Nc3+ 26.Kc2 Qf8 27.Bd6 >0:03 1/8 0.14 692010 22...Qe8 23.Ne3 Nb4 24.Qxb7 Rb6 > 25.Qf3 Nxa2+ 26.Kc2 Qxd7 27.Qxa8+ > Kh7 >0:06 1/9 0.26 1215028 22...Qe8 23.Ne3 Nb4 24.Qxb7 Nxa2+ > 25.Kb1 Nc3+ 26.Kc2 Rd8 27.Rc7 a5 > 28.Re1 >0:16 1/10 0.39 3251616 22...Qe8 23.Ne3 Nb4 24.Qxb7 Nxa2+ > 25.Kb1 Rb6 26.Qf3 Qxd7 27.Qxa8+ > Kh7 28.Qe4+ Kg8 29.c5 >0:35 1/10 0.12 7007672 22...b5 23.Ne3 bxc4 24.bxc4 Qa6 > 25.Qd2 Rae8 26.Rd1 Qa3+ 27.Kb1 > h5 28.Bd6 >1:50 1/11 0.00 22342862 22...b5 23.a3 bxc4 24.bxc4 Qa6 > 25.Qd3 Re2 26.Qxe2 Qxa3+ 27.Kd2 > Qa5+ 28.Kc1 Qa1+ 29.Kd2 Qa5+ >2:35 1/11 -0.10 31447650 22...Qe8 23.f3 Re2 24.Re1 Rxe1 > 25.Bxe1 Ne5 26.Rd6 Bf8 27.Bc3 Bxd6 > 28.Qxd6 Ng6 29.Qd4 > >After forcing a5, here is what The King says: > >Time Depth Score Positions Moves >0:00 1/3 1.04 2665 23.Ne3 Re7 24.Rxe7 Nxe7 >0:00 1/4 0.95 6421 23.Ne3 Re7 24.Rd1 Nb4 25.Qf5 >0:00 1/5 0.99 22608 23.Ne3 a4 24.Nf5 Ra5 25.Rc7 Qf8 >0:00 1/6 0.99 73966 23.Ne3 a4 24.Nf5 Ra5 25.Rc7 Qf8 >0:01 1/7 0.86 222567 23.Ne3 a4 24.Nf5 Ra5 25.Qxe6 fxe6 > 26.Rxg7+ Kh8 27.Nd6 >0:05 1/8 1.14 889827 23.Ne3 Qe8 24.Rxb7 a4 25.Nc2 axb3 > 26.axb3 Ra2 27.Rd1 >0:10 1/9 0.95 1909501 23.Ne3 Qe8 24.Rd1 a4 25.Nc2 axb3 > 26.axb3 Ra2 27.Rxb7 Re2 28.Rd2 >0:42 1/10 0.00 7917344 23.Ne3 a4 24.Nf5 axb3 25.Rxf7 bxa2 > 26.Rxg7+ Kh8 27.Kd2 a1=Q 28.Rxa1 > Rxa1 29.Rf7 Qe8 30.Rxb7 >1:49 1/10 0.10 20932719 23.a3 Qe8 24.h4 Nd4 25.Kb1 Nxb3 > 26.Rxb7 Rd8 27.Qb5 Qxb5 28.cxb5 >2:01 1/10 0.13 23295312 23.a4 Qe8 24.f3 Re7 25.Rxe7 Qxe7 > 26.Bd6 Qe2 27.Qd2 Re8 28.Qxe2 Rxe2 >2:19 1/11 -0.04 27065515 23.a4 Qe8 24.f3 Re7 25.Rxe7 Qxe7 > 26.Qd6 Qe2 27.Qd2 Re8 28.Qxe2 Rxe2 >2:56 1/11 0.05 34544091 23.Ne3 a4 24.Nf5 Bf8 25.Rc7 Qe8 > 26.Rd1 axb3 27.Rxb7 Rd8 28.Qf3 bxa2 > >jm Thanks John, Please see my response to Uri below. I did more testing on this and it would seem that a5 appears to be the BM here from what I have found.
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