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Subject: Re: I AM THE KING OF THE WORLD - perft speed comparison!

Author: Severi Salminen

Date: 08:55:05 12/06/01

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>Hehe, nice. I can do it in 12 secs on the Athlon, but apparently I get too many
>positions so I am disqualified.
>I don't check for castle rights because it can't be done in 6 plies anyway. King
>captures checks are on, but I've diabled the sorting of moves so it will iterate
>deeper and count more nodes before it discovers the positions was actually
>illegal to begin with :(
>It will cost some speed to sort the moves and fix it, of cause a linear search
>would be enough, I just have to check for the king capture. But I can't do perft
>7 anyway without some attack bitboards to check the castle stuff, so I surrender
>;)

And if we did only perft 1, I could remove everything but pawn and knight
portions from move generation and makemove functions ;) That would be fast! And
actually I could pre-compute all these positions and then just copy them to
board structure! I'd be VERY fast! But yes, you are disqualified if you don't
chech castling rights, so: I AM THE KING, AGAIN! Or maybe we are after all
comparing apples and oranges: everyone is doing something different so we can't
compare the figures.

Severi "King" Salminen



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