Author: John Merlino
Date: 11:31:28 12/26/02
Go up one level in this thread
On December 26, 2002 at 08:03:23, Gerd Isenberg wrote: >Hi All, > >How long does your program need to avoid Qxf1? > >[D] 1kr5/pp2bNp1/1qb1p3/3n4/P2PN3/1p1B2P1/1B2Q3/R4rK1/w - - ;am Qxf1 > >In IsiChess some queen-pinned knowledge was helpfull. >4 seconds to avoid Qxf1 on AMD XP 2.1+ 256MB Hash. > >Cheers, >Gerd Chessmaster 9000, on a P3-733, never considers Qxf1: Time Depth Score Positions Moves 0:00 1/3 1.26 935 1.Rxf1 Nb4 2.Nfd6 Bxd6 3.Nxd6 Nxd3 4.Qxd3 0:00 1/4 1.27 3588 1.Rxf1 Rf8 2.Ne5 Rxf1+ 3.Kxf1 Bxa4 0:00 1/5 1.09 9805 1.Rxf1 Bxa4 2.Ne5 Be8 3.Ra1 0:00 1/6 0.98 22121 1.Rxf1 Bxa4 2.Ne5 Rc2 3.Bxc2 bxc2 4.Ba1 Ba3 0:01 1/7 0.99 73729 1.Rxf1 Bxa4 2.Ne5 Rc2 3.Bxc2 bxc2 4.Ba1 Ba3 5.Qc4 0:02 1/8 0.88 149865 1.Rxf1 Bxa4 2.Ne5 Rc2 3.Bxc2 bxc2 4.Ba1 Qb3 5.Qd3 Qxd3 6.Nxd3 0:06 1/9 0.88 432753 1.Rxf1 Bxa4 2.Ne5 Rc2 3.Bxc2 bxc2 4.Ba1 Qb3 5.Qd3 Qxd3 6.Nxd3 0:32 1/10 0.74 2266234 1.Rxf1 Bxa4 2.Nd2 Bf6 3.Ne5 Nc3 4.Qe3 Nd5 5.Qe1 Bxe5 6.Qxe5+ Qc7 1:51 2/11 1.05 7890401 1.Rxf1 Bxa4 2.Ne5 Be8 3.Nd2 Ka8 4.Ra1 Nc3 5.Qg4 Bb5 6.Bxb5 Qxb5 7.Qxe6 jm
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