Author: Christophe Theron
Date: 07:12:36 06/04/01
Go up one level in this thread
On June 04, 2001 at 05:29:47, José Carlos wrote:
>On June 04, 2001 at 04:30:03, Slater Wold wrote:
>
>>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?
>>>
>>>
>>>Rudolf
>>
>>h3? Amazing. Now we all know why computers use opening books! :)
>>
>>
>>Slate
>
> I think you misunderstood him. He said 'material only', which means that the
>program choses the first move it generates and sticks to it unless it sees it's
>losing material. 'h3' is just a move that doesn't lose material in 30 plies.
>There are a lot of others, but the program doesn't mind, since he thinks they
>all are worth the same.
>
> José C.
The fact that h3 was not losing material after 30 plies was not obvious, at
least to me.
As someone else said, a tool like this one could be useful to improve opening
theory by computing exactly which opening lines could lead to forced loss of
material.
Christophe
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