Author: Andrew Williams
Date: 11:52:13 06/04/01
Go up one level in this thread
On June 04, 2001 at 03:36:25, Rudolf Huber wrote: > >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? > Yes. PostModernist on an Athlon 1200 finishes 30 plies in 53 minutes. PostModernist is also an MTD(f) program. I switched off search extensions in line with your experiment: 1= 0 0 23 1. a3 2= 0 0 46 1. a3 3= 0 0 109 1. a3 4= 0 0 211 1. a3 a6 5= 0 0 352 1. a3 a6 2. a4 6= 0 0 959 1. a3 a6 2. a4 a5 7= 0 0 2463 1. a3 a6 2. a4 a5 3. b3 8= 0 0 3974 1. a3 a6 2. a4 a5 3. b3 b6 9= 0 0 6304 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 10= 0 0 9674 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 11= 0 0 20608 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 12= 0 0 45784 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 13= 0 0 71389 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 14= 0 0 112415 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 15= 0 0 173559 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 16= 0 0 332658 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 17= 0 1 676245 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 18= 0 3 1057702 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 19= 0 4 1716569 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 20= 0 7 2643135 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 21= 0 13 4782102 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 22= 0 24 9135626 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 23= 0 38 14678794 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 24= 0 65 24932990 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 25= 0 106 39998866 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 26= 0 210 74602601 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 27= 0 405 142620369 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 28= 0 777 267815428 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 29= 0 1591 531037924 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 30= 0 3169 1012106507 1. a3 a6 2. a4 a5 3. b3 b6 4. c3 c6 5. b4 axb4 Andrew
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