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Subject: Re: New Algorithm for "el cheapo Singular Extensions" :)

Author: Tord Romstad

Date: 03:21:17 01/27/05

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On January 27, 2005 at 05:54:20, Dr. Axel Steinhage wrote:

>On January 27, 2005 at 05:44:21, Tord Romstad wrote:
>
>>Do those of you who successfully use singular extensions employ some technique
>>to avoid triggering the extension in the type of situation described above?
>>
>>Tord
>
>I don't do it yet, as my first thoughts went into the detection of the
>singularity. I have not yet finally decided how to extend when a singular move
>has been found. So far I just stupidly add a full ply in my fractional
>extensions-scheme. But this has to be changed, of course. Especially when you
>have other extension techniques such as "one reply extensions". Then you MUST
>take care, that these extensions do not overlap with the general SE.  Otherwise
>you give, for instance, two plies for only one reason.

Most of us do not allow an extension of more than a full ply at a single node.
If a move is extended for more than one reason, the different extensions are
added together, but if the sum exceeds a full ply we reduce it back down to
exactly one ply.

Tord



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