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Subject: Re: negative extensions

Author: David Rasmussen

Date: 06:51:50 01/25/01

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On January 25, 2001 at 09:34:05, Robert Hyatt wrote:

>On January 25, 2001 at 08:20:26, David Rasmussen wrote:
>
>>Howdy.
>>
>>Inspired by the thread on extensions, I was wondering whether the idea of
>>negative extensions or reductions could be a good one.
>>
>>I mean, maybe many of the "unsound" pruning methods would be sounder if, instead
>>of just pruning, they just adjusted the resulting depth down. In that way, a
>>line would still be examined, only later.
>
>
>This is what null-move search does, in essence...

Exactly, but null-move does it because it assumes that a null-move can't be very
good. I am talking about doing it in other cases as well, where we might think
that the move is not very good as well. Extensions extend exciting lines. I want
to reduce boring lines too.



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