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Subject: Re: Time control question - don´t understand crafty´s logic

Author: Volker Böhm

Date: 03:36:04 07/17/04

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On July 17, 2004 at 05:44:23, GeoffW wrote:

>Hello
>
>Thanks for the detailed explanation, but either I didn't follow the subtlety of
>it or is the logic still prone to an occasional bad blunder ?
>I have just been looking at a game from the Chess War C round 6, here is an
>interesting position related to the above discussion
>
>white has just taken a pawn on a3 on the previous move, giving black a juicy
>rook recapture offering. Taking the hanging rook though is an instant loss of
>game with a score reversal of 6 pawns or so !!
>
>[D]8/3B4/2P3pk/1p6/8/R1q2N2/6K1/8 b - - 0 75
>
>maybe your definition of a "recapture" is "a capture of a piece of equal value
>to previous move's capture" ? Maybe that is where I am getting confused ?
>
>Thanks for any clarification
>
>      regards Geoff

I don´t think that a recapture of a piece of equal value has less risk than the
recapture in your shown example - you just have to place a rook at the place
where the pawn was captured to get an example.

There is allways a possibility that the "easy-move" algorithm is wrong. To
reduce the risk it searches for 1/3 of the "normal" time. If in this time any
remarcable happens (i.e. other good move is found, value changes too much) the
normal time span will be taken for the search. Thus this example will be handled
without errors.

Greetings Volker



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