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Subject: Re: Node counting confusion.

Author: Robert Hyatt

Date: 19:51:40 01/17/98

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On January 17, 1998 at 19:03:49, Peter W. Gillgasch wrote:

>I always counted interior nodes which result in a strictly legal
>position only. The same way Bob counts his nodes I think. DarkThought
>did that, Chess Demon does that too.
>
>-- Peter

Hi Peter.  Part of your above statement is wrong, but I'm not sure
which part.  :)

In any case, Crafty makes illegal moves, advances to the next ply,
generates moves, one of which will capture the king and kick it back
to the previous ply.  And I still count that.  I'm counting "work done"
rather than estimating the number of *real* positions I saw.  And I do
just as much work making an illegal move as I do making a normal move.

However, I've counted 'em forever like this, and so does everyong else
I assume.  Only real confusion I have seen is that I count depth=0
nodes as q-nodes, most count them as regular nodes and count depth <0
nodes as q-nodes...  so when we compare regular vs quiescence we have
problems...



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