Author: John Merlino
Date: 17:24:12 09/12/05
Go up one level in this thread
On September 12, 2005 at 19:05:40, Albert Silver wrote: >On September 12, 2005 at 18:03:22, John Merlino wrote: > >>On September 12, 2005 at 11:31:19, Arnon Yogev wrote: >> >>>Stupid me. >>> >>>[D] 8/5Nk1/p3p1p1/3n4/7P/P4R2/2r4P/7K b - - 0 46 >> >>CM9_R1 on a P4-2.4 selects Rc3 in less than a second and never wavers from it: > >>7:10 7/16 -1.17 143180083 46...Rc3 47.Rxc3 Nxc3 48.Ng5 Kf6 >> 49.Kg2 e5 50.Kf3 Kf5 51.Ke3 Nd5+ >> 52.Kf3 Nf6 53.Ke3 e4 54.Kd4 a5 >> 55.a4 > >Yes, Rc3 looks right to me. Removing the rooks should make it much easier for >Black to convert. That Black is clearly winning should not be in doubt. Just >take off the pieces, leaving everything else as is, > >[D]8/6k1/p3p1p1/8/7P/P7/7P/7K b - - 0 1 > >and anyone can see it. So Black should try to trade them off, without disturbing >the structure. > > Albert I don't know if Black will be able to force a trade of the Knights as well. That's a pretty big "if", I think.... Here's what CM9_R1 says after forcing 1...Rc3 2.Rxc3 Nxc3: Time Depth Score Positions Moves 0:00 3/10 -1.15 66885 48.Nd6 Kf6 49.Kg2 Ke5 50.Nc8 Nb5 51.a4 Nc3 52.Ne7 Kf6 0:01 4/11 -1.19 140138 48.Nd6 Kf6 49.Kg2 Ke5 50.Nf7+ Kf4 51.Nh8 Kf5 52.Nf7 e5 53.Kf3 e4+ 54.Ke3 0:02 5/12 -1.22 307021 48.Nd6 Kf6 49.Kg2 Ke5 50.Nf7+ Kf4 51.Nh8 Kf5 52.Nf7 Nb5 53.a4 Nc3 54.a5 e5 0:02 5/12 -1.18 439792 48.Ne5 Kf6 49.Nc6 e5 50.Kg2 Ke6 51.Kf3 Kd6 52.Nb4 a5 53.Nc2 Kd5 0:03 6/13 -1.19 742378 48.Ne5 Kf6 49.Nd7+ Kf5 50.Nb8 a5 51.a4 Nxa4 52.Nc6 e5 53.Nxa5 Nc5 54.Nc4 Nd3 55.Kg1 0:04 6/13 -1.13 1116982 48.Ng5 Kf6 49.Kg2 Kf5 50.Kf3 e5 51.Ke3 Nb5 52.a4 Nc3 53.a5 e4 54.Nf7 0:05 7/14 -1.12 1652430 48.Ng5 Kf6 49.Kg2 Kf5 50.Kf3 e5 51.Ke3 Nd5+ 52.Kf3 Nf6 53.Ke3 Ng4+ 54.Kd3 Nf2+ 55.Ke2 Ne4 56.Nf7 Kf4 0:09 8/15 -1.21 3098525 48.Ng5 Kf6 49.Kg2 Kf5 50.Kf3 Nb1 51.a4 Nd2+ 52.Kf2 e5 53.Ke2 Ne4 54.Nxe4 Kxe4 55.a5 Kd4 56.Kd2 e4 0:12 8/15 -1.14 4620162 48.Ne5 Kf6 49.Nd7+ Kf5 50.Kg2 e5 51.Nc5 a5 52.a4 e4 53.Nb3 Nxa4 54.Nxa5 Nb2 55.Kf1 Nd3 56.Nc4 0:21 9/16 -1.07 8364194 48.Ne5 Kf6 49.Nd7+ Kf5 50.Kg2 e5 51.Nc5 a5 52.Kf3 e4+ 53.Ke3 Ke5 54.Nd7+ Ke6 55.Nb6 Kf5 56.Nc4 a4 57.Nd6+ Ke5 58.Nc4+ Kd5 0:43 10/17 -0.95 17284595 48.Ne5 Kf6 49.Nd7+ Kf5 50.Kg2 e5 51.Nc5 a5 52.Kf3 e4+ 53.Ke3 a4 54.Kd2 Nb1+ 55.Ke3 Nxa3 56.Nxa4 Nc2+ 57.Kd2 Nd4 58.Nc3 Nf3+ 59.Ke3 1:21 11/18 -0.94 32924336 48.Ne5 Kf6 49.Nd7+ Kf5 50.Kg2 e5 51.Nc5 a5 52.Kf3 e4+ 53.Ke3 a4 54.Kd2 Nb1+ 55.Ke3 Nxa3 56.Nxa4 Nc2+ 57.Kd2 Nd4 58.Ke3 Nf3 59.Nc5 2:45 12/19 -0.98 67601023 48.Ne5 Kf6 49.Nc6 e5 50.Kg2 Ke6 51.Kf3 Nd5 52.Ke4 Nf6+ 53.Kd3 Kd6 54.Nb4 a5 55.Nc2 Ng4 56.a4 Nxh2 57.Ne3 Nf3 58.Nc4+ Kd5 59.Nxa5 Nxh4 At best, I think Black can only hope for a KNP vs. KN game. jm
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