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Subject: Newbie Chess programmer help please ?

Author: Geoff

Date: 06:55:13 04/18/03


Hi

I have just started my first few tentative steps of trying to figure out how
to write a computer chess program. Its going fairly well but I hit a slight
snag. I have been starting off by reading and using Tom Kerrigan's excellent
program. I have begun by using a simple Negamax search that looks at every
possible node, I have added a counter for the number of nodes searched.

When I print this out for a 1 ply search from the normal start position I
get the expected

1 ply  =  21        I.E root node + 20 white moves (16 pawn moves and 4
knight moves)

however, my program gives me

 2 ply =  421

 3 ply = 9,323

 4 ply = 206,604

I suspect my figures for ply's 2 to 4 are wrong, but it is dificult to prove
one way or another ?

Can anyone confirm whether these figures are right or wrong ?

Thanks for any help

        Regards Geoff





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