Author: John Merlino
Date: 17:52:17 04/10/05
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On April 10, 2005 at 19:55:40, Rob Basham wrote: >[D]2r1r2k/4R1pp/pb6/1p6/2nqN1QB/P5PP/1PB4K/5R2 w - - 0 1 > > >White mates in about 9 or 14... > >Best move is.. > >Qf5, Bf6, or Rxe8+.....? > >Thanks > >Rob > >Thanks to John Merlino for your help on these test diagrams...:-) It takes exactly one minute for CMX Yoda v25 on a P4-2.4 to announce Mate in 9 with Bf6: Time Depth Score Positions Moves 0:00 1/3 10.52 4465 1.Bf6 Rxe7 2.Bxd4 Rd8 0:00 1/4 10.39 9920 1.Bf6 Rxe7 2.Bxd4 Rd8 3.Qf3 0:00 1/5 10.54 51151 1.Bf6 Rxe7 2.Bxd4 Rd8 3.Qg5 Red7 0:00 1/5 12.04 189663 1.Qf5 Qe5 2.Rxe5 Nxe5 3.Nd6 Rxc2+ 4.Qxc2 0:01 1/6 13.31 312119 1.Qf5 Qe5 2.Rxe5 Nxe5 3.Nd6 Rxc2+ 4.Qxc2 Rb8 5.Qe4 Ng6 0:03 1/7 14.55 858973 1.Qf5 Qd5 2.Rxe8+ Rxe8 3.Qxd5 Ne3 4.Qf7 Nxf1+ 5.Qxf1 Bd4 6.Qf7 0:11 1/8 16.40 2967418 1.Qf5 Qe5 2.Rxe5 Nxe5 3.Nd6 Rxc2+ 4.Qxc2 Rb8 5.Nc8 Ng6 6.Nxb6 Nxh4 7.gxh4 0:30 1/9 17.20 8063147 1.Qf5 Qe5 2.Rxe5 Nxe5 3.Nd6 Rxc2+ 4.Qxc2 Rg8 5.Qf5 Bc5 6.Qxe5 Bxd6 7.Qxd6 a5 1:00 1/9 Mate09 16434288 1.Bf6 Rxe7 2.Bxd4 Rg8 3.Ng5 Ne5 4.Qe4 Ng6 5.Qxe7 h6 6.Nf7+ Kh7 7.Bxg6+ Kxg6 8.Qe4+ Kh5 9.Qg4# 1:04 1/10 Mate09 17702274 1.Bf6 Rxe7 2.Bxd4 Rg8 3.Ng5 Ne3 4.Qe4 Nxf1+ 5.Kg2 Ne3+ 6.Bxe3 g6 7.Qxe7 Rg7 8.Qf8+ Rg8 9.Nf7# 1:34 1/11 Mate09 27485404 1.Bf6 Rxe7 2.Bxd4 Rg8 3.Ng5 Ne3 4.Qe4 Nxf1+ 5.Kg2 Ne3+ 6.Bxe3 g6 7.Qxe7 Rg7 8.Qf8+ Rg8 9.Nf7# It appears that both Rxe8+ and Qf5 are Mates in about 15 moves. jm
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