Author: Ed Schröder
Date: 03:49:04 07/07/05
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On July 07, 2005 at 03:50:21, Alvaro Jose Povoa Cardoso wrote: >Hi, I'd like your opinion on a modification to the first reduction explained on >your webpage. >The reduction reduces a full ply if we are behind alpha by a certain amount. >Also you make sure you aply this only once in every possible line in the tree. >What I propose is instead of a full ply reduction to reduce say 1/16th of a ply >and alow it to kick in more than once in every line in the tree. >If we do it like you explain and we are at a line with a sacrifice the engine >will reduce a full ply and might not get it. >But if we do it like I explained we still make a reduction on a line with a >sacrifice but it will be a 1/16th reduction and the engine might see the >sacrifice is sound. >Now I could be wrong, that's why I would like your thoughts on this. > >Note: I know you use 1/4 of a ply as the smallest fraction possible to do >reductions/extensions, so you might need to expand this to 1/16th or higher. I have used this technique in the past, it even has a name -> fractional extensions or in this case fractional reductions. It's my opinion that it gains nothing. But note that others might disagree. Good luck with your engine. Ed
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