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Subject: Re: null move question

Author: Gerd Isenberg

Date: 12:30:21 10/06/04

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On October 05, 2004 at 18:23:59, David B Weller wrote:

>position 'A' white to move:
>
>W - moves out of position 'A'
>B - null-moves
>W - reverses move [moves back]
>
>new position A' differs in that it is Black's turn
>
>which might have been achieved had white simply null-moved.
>
>...interesting....

Probably... at least interesting to play with.

We try a move at postion 'A' after nullmove.
Therefore the nullmove didn't fail high, since we still search.

Now, due to two played reverse moves with a nullmove inbetween, the same
position occurs as after 'A'->nullmove. Same side to move, black here.

We may find a hash hit with safe draft+2.
Is there a best black move stored there?
Probably not - hmmm...

Gerd




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