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Subject: Re: mate threat extension/null move

Author: Tony Werten

Date: 03:38:28 10/06/04

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On October 06, 2004 at 05:19:27, Uri Blass wrote:

>On October 05, 2004 at 18:41:58, Stuart Cracraft wrote:
>
>>On October 04, 2004 at 20:23:27, Don Beal wrote:
>>
>>>Hmmm.  It's very helpful to post the actual code.
>>>My time is limited though.
>>
>>No problem -- you've made good comments and de-lurked
>>and everyone enjoys that.
>>
>>The bet was to decrease the WAC #141 problem down to <= 10
>>seconds without turning off the null move as one
>>claimant had done.
>>
>>Although I am now at 49 seconds for WAC 141 solution with
>>null move enabled and not limited compared to the earlier 95
>>seconds, the <= 10 bet is still open. I'll hereby double the
>>bet to $100 to the first person who helps me achieve it directly.
>
>If you use mate threat extension(and if I understand correctly you use it) then
>I suggest to limit it to the case when
>the following conditions happens:
>1)There is no another extension for the last 2 plies.
>2)The side that threats the mate has not a big advantage of more than 2 pawns
>and it means that the evaluation is better than 2 pawns against the side to
>move.

3) You do not have winning capture on the piece that delivers the checkmate.

Tony

>
>I hope it can help you.
>
>I believe that
>these ideas also should be productive for real games.
>
>Uri



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