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Subject: Re: Does crafty stop calculating SEE after capturing a king?

Author: Andreas Guettinger

Date: 00:48:32 01/13/04

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On January 12, 2004 at 17:47:07, Robert Hyatt wrote:

>On January 12, 2004 at 17:34:52, Uri Blass wrote:
>
>>I do not see when it happens in crafty and note that it is not only a question
>>of speed when it is not clear what is faster and if I understand correctly
>>crafty may be wrong when a sequence of captures that is finished in trading
>>kings happens and it may happen in the endgames.
>>
>>[D]8/5r2/5k2/3R1p2/5K2/8/8/8 w - - 0 1
>>
>>Rxf5+ is a good capture but based on SEE that let trading kings it can be
>>pruned.
>>
>>Uri
>
>No.  It is not very frequent and doing the test will burn more time than
>avoiding the test saves, since the occurrence is so tiny.  I simply ignore
>it totally...

A gave my kings a value of +-Infinity.
Now, in such a case, wouldn't it stand pat anayway instead of capturing the
king? Because loosing a rook seems better than loosing a king.

regards
Andy



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