Computer Chess Club Archives




Subject: Hashing double bounds

Author: rasjid chan

Date: 12:18:05 06/20/05

I have implemented hashing 2 bounds after reading fruit does this.
It is fairly complicated to do and I just want to see if it is done wrongly.

I measured the figure

Per game move it is 0.000 almost all the time.
Ocasionally it has 0.001 and almost rarely 0.002.

If others have much higher figure then this,I suspect my double-bound is done
badly. It is difficult to debug except through usual hit statistic.

If this 2nd bound statistic is correct, then fail-soft propagation
of exactness is far better. For full-search FL exactness,it starts from 2/3%
and drops to about 1% for whole game.

Best Regards

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