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Subject: Re: Storing and reading exact- and upper bounds from hash

Author: Ulrich Tuerke

Date: 04:06:58 02/02/01

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On February 02, 2001 at 06:44:47, Andreas Herrmann wrote:

>If i work with exact- and upper bounds, sometimes my program Holmes spends the
>opponent a figure. If i only use lower bounds, this never happens.
>What could be the reason for this?
>
>Andreas

One thing comes into my mind. When you store an upper bound into the hash table,
you should not store a move, because you will not have any. There was no best
one, because all moves had returned scores below alpha. I had neglected this for
a while. Thus I had been always storing the last move of the move list, of
course by far not the best but rather the worst one.

Uli



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