Null Move Beta=0
Moderators: hgm, Rebel, chrisw
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D Sceviour
- Posts: 570
- Joined: Mon Jul 20, 2015 5:06 pm
Re: Null Move Beta=0
Has anyone tried the Null Move beta=0? Any success, failure, indifference or questions?
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Engin
- Posts: 918
- Joined: Mon Jan 05, 2009 7:40 pm
- Location: Germany
- Full name: Engin Üstün
Re: Null Move Beta=0
would that be not easier to let null move only be allow at beta != 0 ?
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D Sceviour
- Posts: 570
- Joined: Mon Jul 20, 2015 5:06 pm
Re: Null Move Beta=0
The last time I tried beta!=0, it resulted in a slowdown of the search. However, there have been a great many changes since then. This time beta!=0 showed good results in the general search! Therefore, beta!=0 might be the simplest answer for all positions. Next experiment with beta!=0 is king pawn endgames. The idea may only be effective if the engine returns NULL for repeated positions.Engin wrote:would that be not easier to let null move only be allow at beta != 0 ?
My engine can only solve this position with beta!=0 condition.
[d]1k3b1q/pP1KpBp1/P3P1Pp/7P/8/8/8/8 w - - 16 1