Author: Steven J. Brann
Date: 19:42:32 04/06/02
Go up one level in this thread
On April 06, 2002 at 21:15:58, Lyn Harper wrote: >On April 06, 2002 at 14:35:28, John Merlino wrote: > >>On April 06, 2002 at 13:24:53, Art Basham wrote: >> >>>Neat problem... >>>for humans and computers...! >>> >>>[D]8/p7/R7/NkN5/3p1p2/P2P1Pp1/6K1/8 w - - >>> >>>1. Nc4...! etc. >> >>26 seconds for Chessmaster 8000 on a PIII-733: >> >>Time Depth Score Positions Moves >>0:00 1/3 9.84 494 1.Rf6 Kxc5 2.Rf5+ Kd6 3.Nc4+ Ke6 >> 4.Rxf4 >>0:00 2/4 10.05 1653 1.Rf6 Kxa5 2.Rxf4 Kb5 3.Ne6 >>0:00 3/5 10.15 6968 1.Rf6 Kxa5 2.Nb7+ Ka4 3.Rxf4 Kxa3 >> 4.Kxg3 >>0:00 3/5 11.35 10104 1.Nc4 Kxc5 2.Ra5+ Kc6 3.Rf5 a6 >> > > > > > > 4.Rxf4 Kd5 5.Kxg3 > >>0:00 4/6 11.35 33421 1.Nc4 Kxc5 2.Ra5+ Kc6 3.Rf5 a6 >> 4.Rxf4 Kd5 5.Kxg3 >>0:01 5/7 12.36 121607 1.Nc4 Kxc5 2.Ra5+ Kc6 3.Rxa7 Kd5 >> 4.Rf7 Kc6 5.Rxf4 Kd5 6.Kxg3 >>0:03 6/8 12.43 431937 1.Nc4 Kxc5 2.Ra5+ Kc6 3.Rxa7 Kc5 >> 4.Ra5+ Kc6 5.Rf5 Kd7 6.Rxf4 Ke6 >> 7.Kxg3 Kd5 >>0:09 7/9 13.45 1447426 1.Nc4 Kxc5 2.Ra5+ Kc6 3.Rxa7 Kc5 >> 4.Ra5+ Kc6 5.Ra6+ Kd7 6.Rd6+ Ke7 >> 7.Rxd4 Kf6 8.Rxf4+ Ke6 9.Kxg3 Kd5 >> 10.a4 >>0:26 8/10 Mate08 4359746 1.Nc4 Kxc5 2.Nd6 Kd5 3.Ne4 Ke5 >> 4.Nf6 Kf5 5.Ng4 Kg5 6.Nh6 Kh4 7.Nf7 >> Kh5 8.Rh6# >>0:39 9/11 Mate08 6508221 1.Nc4 Kxc5 2.Nd6 Kd5 3.Ne4 Ke5 >> 4.Nf6 Kf5 5.Ng4 Kg5 6.Nh6 Kh4 7.Nf7 >> Kh5 8.Rh6# >> >>jm > Did I get diddled when I bought my computer? It takes CM8K 28secs to solve > this on a 1.3Ghz P4. Or am I setting the thing up wrong to solve the mate? > Incidentally, the default CM personality is fastest, it seems, when it >comes to mate solving. I tried a couple of custom personalities, and they >were slower. Times will vary with settings and hash table size. On my 1.9G P4 I get: 19 seconds for the default Chessmaster personality 13 seconds for CM128 (the Chessmaster settings except for 128 Meg hash) 1:03 for my custom personality that includes 128 Meg of hash and selective search = 12 My custom personality will generally out-perform CM128 on mate searches, but not on this one. I just turn it loose in the game window; not the solve for mate mode. As far as getting diddled when you bought your computer, it is difficult to make an assessment since I wasn't there to watch. Steve
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