Author: Robert Hyatt
Date: 18:50:24 05/16/04
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On May 16, 2004 at 20:39:55, Marc Bourzutschky wrote: >On May 16, 2004 at 18:48:19, GuyHaworth wrote: > >>One kind of illegality is to place two pieces on the square, which Eugene's >>indexing scheme tries do, e.g. in KQRK. > >Actually, for KQRK the Nalimov tablebase does not contain positions with more >than one piece on the same square. The only illegal positions in the tablebase >are those where white is to move and black is already in check, and the checking >piece is more than 1 square away from the black king... > >-Marc That is my understanding also. Even positions with two kings on adjacent squares are squeezed out. That's part of the space savings before compression comes into play...
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