Author: Andreas Herrmann
Date: 02:25:32 09/14/00
Go up one level in this thread
On September 13, 2000 at 17:12:07, Andreas Herrmann wrote:
>Hello,
>
>i want to include pawn hash tables in my chess program holmes, but i don't know
>how i have to calculate the hash index and the hash key.
>I think the hash index of the position will only calculated with the pawns on
>the board like the following,
>
>for (pos=A1;pos<=h8;pos=pos+1) {
> if (figure[pos]=pawn) {
> PawnHashIndex = PawnHashIndex ^ RandomIndex[pos].index;
> }
>}
>
>is this right??
>
>How can i get a good hash key? What have i calculate with xor?
>
>Thanks for each information.
>
>Andreas
>
>
>www.wbholmes.de
Hello again,
the links from Ricardo are a good information source, but i found nothing about
pawn hash tables, only normal hash table and that's not new for me.
My question is how can i get a good hash key for collision check in the pawn
hash table.
Is a XOR combination with a random figure enough? Or is it not so difficult than
i am thinking?
Andreas
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