Author: Reinhard Scharnagl
Date: 23:00:21 03/04/05
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On March 04, 2005 at 17:33:44, Russell Reagan wrote: >On March 04, 2005 at 04:36:19, Reinhard Scharnagl wrote: Hi Russel, >>We handle here valid chess positions of the traditional chess game >>and calculate codelengths for a special subset of RELEVANT positions >>matching ONE simple restriction (without relevance for practice): >> >> "For each performed promotion there also must have been captures >> during the game: one pawn or half an officer." >I think this assumption is not correct, or maybe I misunderstand it. It is >possible to promote two white pawns for each black pawn captured. To promote all >8 white pawns only requires 4 captured black pieces. Then you can promote all 12 >pawns. See my (legal) game below which demonstrates this. this is a practical restriction, not an assumption. What I claim is, that really played games will follow that assumption. But because of a lot to be saved bits, even numerous positions with some such unlikely promotions would fit into that length scheme. Reinhard.
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