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Subject: EGTB question to Martin Fierz

Author: Alvaro Jose Povoa Cardoso

Date: 09:49:10 04/19/02


Hi Martin, how are you?
I'vv been studing Jonathan Schaeffer's EGTB paper and I got stuck in the
indexing functions.
Before I red the paper I had a basic vague idea on EGTB indexing.
My naive scheme was reserving 5 bits for each piece. So for all 4 piece
databases I have 20 bits. This scheme has indices larger than the number of
positions possible. But what about 8 piece databases? I would need 40 bits.
This just don't look good.
After I red Schaeffer's paper I simply didn't understand the indexing algorithm.

So, could you please help me on this?


Thanks in advance,
Alvaro Cardoso



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