Author: Komputer Korner
Date: 09:25:18 08/15/98
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On August 15, 1998 at 11:30:45, blass uri wrote: > >On August 15, 1998 at 10:57:03, Komputer Korner wrote: > >>On August 14, 1998 at 00:59:59, Kai Lübke wrote: >> >>>On August 13, 1998 at 22:13:24, Danniel Corbit wrote: >>> >>>>What is the maximum possible count for legal moves from any position in a chess >>>>game? Has anyone ever calculated this? Can it be greater than 256? >>> >>>There are some strange positions which were posted to rgcc some time ago, >>>the weirdest of them allowing something like 229 (or so) legal moves. >>>I think this was the highest possible number (and is certain to crash just about >>>any chess program I have). >>>I suppose searching DejaNews will get you the posting. >>> >>>--- >>>Shep >>According to Ken Whyld in Chess the Records maximum mobility is: >>With promoted pieces: 324 candidate moves > >324 is impossible > >An upper bound for the number of possible candidate moves: >9 queens:9*27=243 >2 rooks:2*14=28 >2 bishops:2*13=26 >2 knights and king:3*8=24 >243+28+26+24=321 >This upper bound cannot be achieved because at most 1 queen can have 27 options. >313 is a better upper bound and it is possible to improve it > >>With no promoted pieces and 32 men on the board: 164 candidate moves > >27+28+26+24+8*4=137 >(8*4 for pawns) >This bound cannot be achieved > >Uri >> >>-- >>Komputer Korner Sorry I didn't question these.He must have included fairy chess rules. Someone else wrote a book listing the limits. I think the limit was 270 including promotions. I can't find the book now. -- Komputer Korner
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