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zaidgs

Possible refinement to verified null-move

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in verified null-moves, if a null fail-high is detected, we reduce search depth by one for that ply. my idea is reduce depth by two when a null fail-high is found, so that tree size will be even closer to standard null-moving, but still avoiding zugwang stuff. i have not done any testing yet, but i wanted to see if other members agree that its a good refinement, or maybe someppl already do that. lets see what u got to say about this.

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Unfortunately the answer to this question, like 99% of (non-trivial) questions about computer chess, is probably "try it and see".

You might post this to the Computer Chess Club. The author of the verified null move article posts there, as well as many other PhD types and amateur programmers who might have tried your idea.

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seems this idea is known and implemented in many engines (as i was told in the CCC), but its shame i nvr read about this idea in any computer chess related site. actually the whole verified null-move thing is rarely mentioned.

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