Author: John Merlino
Date: 15:57:43 07/13/02
Go up one level in this thread
On July 12, 2002 at 22:43:40, leonid wrote: >Hi, > >This one should be not difficult: > >[D]r2kq2r/1R1NN1R1/qqqqqqqq/8/Q1QQQQ1Q/2P2Q2/B2nnP1B/2bK1b2 w - - > >If You will find that it take time to solve it, then try for black side. There >mate is two moves shorter and is very easy. > >Please indicate Your result. > >Thanks, >Leonid. Chessmaster 9000, on a PIII-600, does not announce a mate in less than 30 minutes: Time Depth Score Positions Moves 0:04 1/3 0.87 209120 1.Nxc6+ Qbxc6 2.Qaxc6 Qhxf4 3.Qc7+ Qxc7 4.Qxc7+ Qxc7 5.Bxc7+ Kc8 6.Qdxf6 3:02 1/4 7.41 9242935 1.Nxc6+ Qbxc6 2.Qcxc6 Nxc3+ 3.Qfxc3 Qe2+ 4.Kxc1 Qe1+ 5.Kb2 Qxa2+ 6.Qxa2 Rxa2+ 7.Kxa2 25:11 1/5 14.82 83830444 1.Nxc6+ Qbxc6 2.Qaxa6 Nxc3+ 3.Qcxc3 Be2+ 4.Qfxe2 Qg1+ 5.Bxg1 Qxc3 6.Nxf6 But, as requested, here's the result for Black to move (19 seconds to announce Mate in 9, and 26 seconds to announce Mate in 8): Time Depth Score Positions Moves 0:04 1/3 -35.68 176480 1...Qaxa4+ 2.Bb3 Qaxb3+ 3.Qxb3 Qexb3+ 4.Ke1 Nxf3+ 5.Qfxf3 Qcxc3+ 6.Qfxc3 Qxc3+ 7.Qxc3 Nxc3 0:06 1/3 -44.51 307550 1...Qcxa4+ 2.Bb3 Qaxb3+ 3.Qxb3 Qexb3+ 4.Ke1 Nxf3+ 5.Qfxf3 Nxd4 0:14 1/4 -43.70 709323 1...Qcxa4+ 2.Bb3 Qaxb3+ 3.Qxb3 Qexb3+ 4.Ke1 Nxf3+ 5.Qexf3 Nxf4 0:19 1/4 -Mate09 975535 1...Qaxa4+ 2.Bb3 Qaxb3+ 3.Qxb3 Qexb3+ 4.Ke1 Nxf3+ 5.Qexf3 Bd2+ 6.Qfxd2 Qxd2+ 7.Qxd2 Qxd2+ 8.Kxd2 Qcxc3+ 9.Qxc3 Qfxc3# 0:26 1/5 -Mate08 1255683 1...Qaxa4+ 2.Bb3 Qaxb3+ 3.Qxb3 Qexb3+ 4.Ke1 Nxf3+ 5.Qexf3 Bd2+ 6.Qfxd2 Qgb1+ 7.Qd1 Q1xd1+ 8.Qxd1 Qbxd1# 0:35 1/6 -Mate08 1665907 1...Qaxa4+ 2.Bb3 Qaxb3+ 3.Qxb3 Qexb3+ 4.Ke1 Nxf3+ 5.Qexf3 Bd2+ 6.Qfxd2 Qgb1+ 7.Qd1 Q1xd1+ 8.Qxd1 Qbxd1# jm
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