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Subject: Re: Crafty null move question

Author: Dann Corbit

Date: 14:29:49 07/17/02

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On July 17, 2002 at 16:30:24, Patrik wrote:

>Hello, Dr Hyatt.
>
>  if (do_null && !tree->in_check[ply] && pieces && (pieces>5 || depth<421)) {
>
>Where does the depth 421 come from?

It appears to be about 7 plies, since INCPLY is 60.

Therefore if:
1.  You are allowed to do null moves
and
2.  You are not in check
and
3.  You have some pieces
and
{
EITHER
4a.  You have at least 5 pieces on the board
OR
4b.  You are less than 7 plies deep
}
then go ahead with the null move



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