Author: Steven Edwards
Date: 10:47:16 10/17/03
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On October 16, 2003 at 18:50:32, William Kerr wrote: >Worlds toughest until someone finds a tougher one. > >After timing engines solving many mates in four, this one was by far the >toughest. > [D] 8/3p1p2/5Ppp/K2R2bk/4pPrr/6Pp/4B2P/3N4 w - - bm Nc3;id #1097 mate in 4 My toolkit solves this in 1 second on a 400 MHz PC: Key: Nc3 PV: (1. Nc3 e3 2. Rb5 d6 3. Nd5 Bxf4 4. Nxf4#)
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