Author: Tony Werten
Date: 22:50:09 01/05/05
Go up one level in this thread
On January 05, 2005 at 22:33:44, Uri Blass wrote: >On January 05, 2005 at 19:26:27, Dann Corbit wrote: > >>On January 04, 2005 at 08:15:16, Duncan Roberts wrote: >> >>>http://chessprogramming.org/cccsearch/ccc.php?art_id=173197 >>> >>> >>>A couple of days ago I said (in a discussion about mtd(f)) that my chess >>>program can search the starting position to 30 ply over night when the eval >>>evaluates material only: >>> >>> >>>SOS no eval >>>1.00 0:00 0.00 1.h3 (2) >>>2.00 0:00 0.00 1.h3 (45) >>>3.00 0:00 0.00 1.h3 h6 2.h4 (138) >>>4.00 0:00 0.00 1.h3 h6 2.h4 (263) >>>5.00 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 (435) >>>6.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 (1.860) >>>7.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 (1.942) >>>8.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 (2.024) >>>9.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 (5.086) >>>10.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 (16.891) >>>11.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (41.424) >>>12.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (94.654) >>>463.9 >>>13.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (132.293) >>>497.3 >>>14.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (245.124) >>>505.4 >>>15.01 0:00 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (359.203) >>>533.7 >>>16.01 0:01 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (714.937) >>>593.8 >>>17.01 0:02 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (1.212.436) >>>570.2 >>>18.01 0:02 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (1.729.490) >>>585.4 >>>19.01 0:05 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (3.025.316) >>>605.0 >>>20.01 0:08 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (4.700.415) >>>587.5 >>>21.01 0:15 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (9.323.868) >>>621.5 >>>22.01 0:29 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (16.881.247) >>>582.1 >>>23.01 0:48 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (28.659.953) >>>597.0 >>>24.01 1:36 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 (56.472.536) >>>588.2 >>>25.01 3:37 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(127.308.632) 586.6 >>>26.01 7:41 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(275.114.597) 596.7 >>>27.01 17:31 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(622.179.104) 591.9 >>>28.01 45:16 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(1.602.666.536) 590.0 >>>29.01 80:46 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(-1452508008) 586.5 >>>30.01 161:28 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(1.397.948.590) 587.6 >>>31.01 513:07 0.00 1.h3 h6 2.h4 h5 3.g3 g6 4.Rh3 Rh6 5.Rh1 Rh8 >>>(471.878.568) 573.3 >>> >>> >>>Actually 30 ply was reached after 2:41 hours. >>> >>>SW: no search extensions, normal nullmove pruning, normal quiescence >>>search >>>HW: 2xCeleron 466 MHz, 500 MByte Hash >>> >>> >>>Can anyone do better? >> >>I would be interested to see how long it takes a material only search to come up >>with something better than a3 or h3. > >I am afraid that never for the simple reason that a3 or h3 do not lose material. I agree. At the moment computers see that a3 or h3 loose material, we have started to solve chess. Tony > >Uri
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