Author: Tony Werten
Date: 10:07:50 04/08/01
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On April 08, 2001 at 12:34:23, Urban Koistinen wrote: >On April 08, 2001 at 09:57:35, Tony Werten wrote: > >>On April 08, 2001 at 08:41:19, Uri Blass wrote: >>>Here is an example of position in t4 >> >>Why is this an example of t4 ? Might be t100, white has just captured a queen. > >Yes, it is in t100 too. >t(2n+2) = or(t(2n),t(2n+2)) >Both the even and the odd sets are growing. (bits get set but never reset as n >increase) > >>Or t99, black has taken the other white queen. > >No. Black is to move, that is what the 'b' means. Black took a queen then white checks would bring it in t99. Tony > >>Counting the number of moves for the 50 move rule has nothing to do with >>distance to mate. ( Or I really don't get it ) >> >>BTW with pawns on the board, t100 and t99 will almost be the only tables with >>any information. > >They are the ones with the information needed by endgames that convert to the >current. They are also the ones needed by a chess program to decide if a >position is a win for white with a single small i/o operation. >They don't tell you distance to conversion. (it is <50 moves) > >Urban Koistinen
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