Author: Uri Blass
Date: 19:33:44 01/05/05
Go up one level in this thread
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. Uri
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