Author: Christophe Theron
Date: 12:24:13 08/13/00
Go up one level in this thread
On August 12, 2000 at 20:45:54, Angrim wrote:
>On August 12, 2000 at 02:45:06, Christophe Theron wrote:
>
>>On August 12, 2000 at 00:57:46, Angrim wrote:
>>
>>>On August 11, 2000 at 20:30:53, Christophe Theron wrote:
>>>
>>>>But your position is an easy one. Try this one with your favorite chess programs
>>>>and tell me what happens:
>>>>
>>>>
>>>>[D]8/PPPPPpPk/3rq3/1b1r2b1/2BR1B2/3RQ3/pppppPpK/8 w
>>>>
>>>>
>>>>I confess that mine gets nuts on this one.
>>>>
>>>>
>>>>
>>>> Christophe
>>>
>>>tried this with my new program, which does not extend on converting moves,
>>>only on checks.
>>>
>>>First it checks each move with pn-search for easy mates, and finds that
>>>e3e5, f4g3, d4xd5, h2g1, and h2g3 all lose simply.
>>>
>>>Then the regular search takes 6 seconds to finish a 2 ply deep search,
>>>and favors Qxe6 with pv:
>>> e3xe6 g5xf4 d4xf4 f7xe6<q d3xd5<q d6xd5<q c4xd5<q e6xd5<q h2xg2<q h7xg7<q
>>><q means the move was in the qsearch.
>>>after another 3 seconds it finished searching 3 ply deep and favored
>>>g8=Q with a huge score. This move remained the favorite for the next
>>>4 ply until I got bored and stopped it after ply 7 and 630 seconds.
>>>pv at ply 7 was g7g8q h7xg8 e7e8q g8g7 f4e5 d5xe5 e3xe5 e6xe5 e8xe5 g5f6 etc
>>>
>>>Angrim
>>
>>
>>
>>This is good. I suspect you limit the qsearch, do you?
>>
>>
>> Christophe
>
>No, but since I don't include converting pawns in the qsearch it only has
>to resolve all of the captures.
>Angrim
I see.
Christophe
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