Author: John Merlino
Date: 13:38:21 10/30/02
Go up one level in this thread
On October 30, 2002 at 16:13:36, Gerd Isenberg wrote: >Position from Shark - IsiChessMMX, Leiden Round 10 > >[D] r4rk1/2n1b1pN/pqb1p1Qp/1p6/P1p3n1/N1P1B3/1PB2PPP/R2R2K1 b - - ; bm Rxf2 > >Even if the position is already won by black, finding the spectacular 24...Rxf2 >seems quite difficult for some engines. Ruffian is clearly the fastest i tried >so far on my 2.1XP+ : > >Ruffian 1.0.0 2 seconds >Shredder5 14 seconds >IsiChessMMX 47 seconds > >May be a bad testposition due to Nxe3 wins too. > >Cheers, >Gerd Chessmaster 9000, on a P4 2.66, finds it in 10 seconds: Time Depth Score Positions Moves 0:00 1/3 -1.64 4222 1...Nxe3 2.a5 Be8 3.axb6 Bxg6 4.Bxg6 Nxd1 5.Rxd1 0:00 1/4 -2.17 9807 1...Nxe3 2.a5 Qa7 3.fxe3 Qxe3+ 4.Kh1 0:00 1/5 -2.84 42249 1...Nxe3 2.a5 Qa7 3.fxe3 Qxe3+ 4.Kh1 Rf2 0:00 1/6 -3.09 108052 1...Nxe3 2.a5 Qa7 3.fxe3 Qxe3+ 4.Kh1 Rf2 5.Re1 0:01 1/7 -3.50 405078 1...Nxe3 2.a5 Qc5 3.Nxf8 Nxd1 4.Rxd1 Kxf8 5.Be4 Rd8 0:04 1/8 -3.46 1019118 1...Nxe3 2.a5 Qc5 3.fxe3 Qxe3+ 4.Kh1 Rf2 5.Re1 Qf4 6.Rg1 Rd8 0:10 1/8 -7.83 2198545 1...Rxf2 2.Nf6+ Bxf6 3.Qh7+ Kf8 4.Bxb6 Rxg2+ 5.Kf1 Nxh2+ 6.Ke1 Bh4+ 7.Bf2 Rxf2 8.Rd6 Rf1+ 9.Ke2 Bf3+ 10.Ke3 Rxa1 11.axb5 axb5 0:20 1/9 -7.83 4177700 1...Rxf2 2.Nf6+ Bxf6 3.Qh7+ Kf8 4.Bxb6 Rxg2+ 5.Kf1 Nxh2+ 6.Ke1 Bh4+ 7.Bf2 Rxf2 8.Rd6 Rf1+ 9.Ke2 Bf3+ 10.Ke3 Rxa1 11.axb5 axb5 0:57 1/10 -8.83 11849564 1...Rxf2 2.Nf6+ Bxf6 3.Qh7+ Kf8 4.Qh8+ Ke7 5.Qxg7+ Bxg7 6.Bxb6 Rxg2+ 7.Kf1 Bf3 8.Bc5+ Kf6 9.Bg1 Nxh2+ 10.Bxh2 Rxh2 11.Rd7 Rh1+ 12.Kf2 Rxa1 13.Kxf3 1:59 2/11 -8.87 25125009 1...Rxf2 2.Nf6+ Bxf6 3.Qh7+ Kf8 4.Qh8+ Ke7 5.Qxg7+ Bxg7 6.Bxb6 Rxg2+ 7.Kf1 Bf3 8.Bc5+ Kf6 9.Bg1 Nd5 10.Re1 Nxh2+ 11.Bxh2 Rxh2 12.axb5 axb5 jm
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