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Subject: Re: nullmove and tactics

Author: Dann Corbit

Date: 10:35:03 03/25/04

Go up one level in this thread


On March 25, 2004 at 10:02:57, Anthony Cozzie wrote:

>On March 23, 2004 at 18:18:51, Uri Blass wrote:
>
>>On March 23, 2004 at 17:28:17, martin fierz wrote:
>>
>>>On March 23, 2004 at 17:13:46, Aivaras Juzvikas wrote:
>>>
>>>>On March 23, 2004 at 16:40:46, Renze Steenhuisen wrote:
>>>>
>>>>>On March 23, 2004 at 16:38:28, Aivaras Juzvikas wrote:
>>>>>
>>>>>>forgot to mention, i dont try null move on 0 ply
>>>>>
>>>>>Than what's your test set?
>>>>
>>>>test set?i just let two versions of my engine play each other a couple of 15 0
>>>>games, the result is either a draw or a win for the one w/o null move, even tho
>>>>it searches deeper as i already mentioned
>>>
>>>"a couple" meaning...?
>>>
>>>if it's two games, forget it. if it's 10 games, forget it too. start believing
>>>it when it's 100 games...
>>
>>I think that if you do not get improvement with null move based on 10 games then
>>there is good chance that you have a bug in the implementation.
>>
>>Uri
>
>I have to agree with Uri here.  If your program plays weaker with null move
>after 10 games, you screwed something up.
>
>Null move is simply _that big_.
>
>Getting 2 extra plys should show up long before 100 games . . .

I have to disagree with you.  You can implement null move incorrectly and still
score better in ten games.  The reason I say that is because I have seen it.



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