Author: Rex
Date: 19:06:07 10/16/03
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AMD MP 2600+ Rebel 12 Customized Personality 22 Seconds 00:00:00.7 2.61 1 80 gxh4 00:00:00.7 4.49 2 342 gxh4 Kxh4 Bxg4 Bxf4 00:00:00.7 4.61 2 470 fxg5 hxg5 gxh4 00:00:00.7 5.53 3 1446 fxg5 hxg5 gxh4 Kxh4 Bxg4 00:00:00.8 5.53 4 2607 fxg5 hxg5 gxh4 Kxh4 Bxg4 Kxg4 00:00:00.8 5.53 5 5384 fxg5 hxg5 gxh4 Kxh4 Bxg4 Kxg4 Rxd7 00:00:00.8 5.53 5 7896 Ne3 00:00:00.8 7.40 5 8311 Ne3 d6 fxg5 hxg5 gxh4 Kxh4 Nxg4 00:00:00.8 7.40 6 10890 Ne3 d6 fxg5 hxg5 gxh4 Kxh4 Nxg4 e3 Nxe3 00:00:00.8 7.40 7 19496 Ne3 d6 fxg5 hxg5 gxh4 Kxh4 Nxg4 e3 Nxe3 00:00:00.8 8.69 8 35015 Ne3 d6 fxg5 hxg5 gxh4 Kxh4 Nxg4 e3 Nxe3 g4 00:00:00.8 10.39 9 60991 Ne3 d6 fxg5 hxg5 gxh4 Kxh4 Nxg4 e3 Rxd6 Kh5 Ne5+ 00:00:00.9 10.39 10 111156 Ne3 d6 fxg5 hxg5 gxh4 Kxh4 Nxg4 e3 Rxd6 Kh5 Ne5+ 00:00:01.0 10.53 11 334484 Ne3 d6 fxg5 hxg5 gxh4 Kh6 Nxg4+ Kh7 hxg5 e3 Nxe3 00:00:01.3 10.53 12 800434 Ne3 d6 fxg5 hxg5 gxh4 Kh6 Nxg4+ Kh7 hxg5 e3 Nxe3 00:00:02.9 11.86 13 2995652 Ne3 d6 fxg5 hxg5 gxh4 Kh6 Nxg4+ Kh7 hxg5 Kh8 Rxd6 e3 Nxe3 Kh7 Bf3 00:00:03.6 11.86 14 4107970 Ne3 d6 fxg5 hxg5 gxh4 Kh6 Nxg4+ Kh7 hxg5 Kh8 Rxd6 e3 Nxe3 Kh7 Bf3 00:00:07.1 11.86 14 9048812 Nc3 00:00:07.1 11.86 14 9048824 Nc3 00:00:07.8 11.86 14 9048812 Nc3 00:00:12.3 11.86 15 18360449 Ne3 d6 fxg5 hxg5 gxh4 Kh6 00:00:12.5 11.86 15 18530331 Nc3 00:00:13.0 11.86 15 19399343 Nc3 00:00:14.0 11.86 15 18530331 Nc3 00:00:20.6 11.86 15 32826445 Kb6 00:00:20.6 11.86 15 32826457 Kb6 00:00:21.0 11.86 15 32826445 Kb6 00:00:22.7 Mate in 4 16 36727179 Ne3 d6 Rb5 d5 Nxd5 e3 00:00:34.8 Mate in 9 17 55302746 Ne3 d6 fxg5 hxg5 gxh4 00:00:40.2 Mate in 5 17 64207233 Nc3 e3 Ne4 d6 Rxd6 00:00:54.6 Mate in 5 18 85323004 Nc3 e3 Ne4 d6 Rxd6 Bxf4 00:01:27.3 Mate in 4 19 124939742 Nc3 d6 Kb5 e3 Bd1 00:01:36.2 Mate in 4 20 133734525 Nc3 d6 Kb5 e3 Bd1 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 >very-very tough; > >This is a composed mate in 4 problem from Benko's Baffler's #1097. > >Most engines take a very long time to find the mate in 4. > >For PC programs with no CPU speed mentioned were run on a P2 300 Mhz. >Morphy was from the Great Game system 6502 at 2 Mhz. > >m6 = anounced mate in 6 >no solve is usually 10 minutes > >Chessmaster 9000 6:14 m11, 8:51 m6, 9:59 m4 >crafty no solve >pocket fritz < 44 sec >yace < 7 min m11, 26:30 m4 >ruffian 1.0.0 no solve >bringer 15 min no solve >rebel10 17 sec m6, 37 sec m4 >uscf 5 sec >morphy 5:27 >rebel12 no solve 7:00 >ruffian 1.0.1 1:53 m11 >fritz532 3:21 m8 Nc3 >pocket genius 3 min no solve >pocket grandmaster 6 min Ne3 +12.26 12/51 >extreme 2:54 m6 16/34 >doctor3 15 sec m4 >sargon4 5 sec m4 (old PC chess program) >lg2kv2.7 10 min no solve >wkchess 33 sec >yacepdb 30 sec m4 >Novag sapphire ii 1:33 m5 >Novag star diamond 0:55 m5 >Chessmaster 9000 1.7 Ghz AMD 0:42 m11, 0:59 m6, 1:06 m4 > >Post a tougher one than this if you know of one. > >Bill
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