Author: A. Cozzie
Date: 12:15:02 08/11/05
Go up one level in this thread
On August 11, 2005 at 15:08:39, John Merlino wrote: >On August 11, 2005 at 11:52:20, Will Singleton wrote: > >>[d]2rq3k/Qp1r2pp/1P6/2p1pP2/1b6/3PBB1b/4PP1P/R1R3K1 b - - am Bxf5 > >CM9_R1 on an AMD 2500 does not see anything better than Bxf5 in under five >minutes: > >Time Depth Score Positions Moves >0:00 1/3 0.65 1779 1...Qe7 2.Be4 Rf8 >0:00 1/4 0.14 4229 1...Qe7 2.Be4 Rf8 3.Qa2 Bxf5 4.Bxf5 > Rxf5 >0:00 1/4 -0.15 8696 1...Bxf5 2.Bg2 Qe7 3.Rc4 Be6 >0:00 1/5 -0.15 15259 1...Bxf5 2.Bg2 Qe7 3.Rc4 Be6 >0:00 1/6 -0.08 40337 1...Bxf5 2.Bxb7 Rb8 3.Bg2 Rxa7 > 4.bxa7 Ra8 5.Bxa8 Qxa8 6.Bxc5 >0:00 1/7 -0.08 172253 1...Bxf5 2.Bxb7 Rb8 3.Bg2 Rxa7 > 4.bxa7 Ra8 5.Bxa8 Qxa8 6.Bxc5 >0:01 1/8 -0.06 288147 1...Bxf5 2.Bxb7 Rb8 3.Bc6 Rxa7 > 4.bxa7 Ra8 5.f3 Be6 6.Bxa8 Qxa8 > 7.Bxc5 >0:03 1/9 0.03 790884 1...Bxf5 2.Bxb7 Rb8 3.Bc6 Rxa7 > 4.bxa7 Ra8 5.Bxa8 Qxa8 6.Bxc5 Bd2 > 7.Rc4 >0:07 1/10 0.00 1792747 1...Bxf5 2.Bxb7 Rb8 3.Bg2 Rxa7 > 4.bxa7 Ra8 5.Bxc5 Bd2 6.Rc2 Bf4 > 7.Bxa8 Qxa8 >0:16 1/11 0.20 4334263 1...Bxf5 2.Bxb7 Rb8 3.Bg2 Rxa7 > 4.bxa7 Ra8 5.Bxa8 Qxa8 6.Bxc5 Bd2 > 7.Rc2 Bf4 8.e4 >0:42 1/12 0.20 11644968 1...Bxf5 2.Bxb7 Rb8 3.Bg2 Rxa7 > 4.bxa7 Ra8 5.Bxa8 Qxa8 6.Bxc5 Bd2 > 7.Rc2 Bf4 8.e4 >2:08 1/13 0.54 35947673 1...Bxf5 2.Bxb7 Rb8 3.Bg2 Rxb6 > 4.Qa8 Rb8 5.Qxb8 Qxb8 6.Ra8 Qxa8 > 7.Bxa8 Ba3 8.Rc2 Rc7 9.Bd5 Bb4 > >jm This is a tough position. Zappa (4 CPUs) needs 17 ply / 3 minutes (or 14 ply / 1 minute with SE) to see -2.5 for Black after Bxf5. However the alternative (Qe7) is also lost, so I guess the correct goal here should be 'get +1 for white'. anthony
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