Author: Uri Blass
Date: 03:53:41 06/21/02
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On June 21, 2002 at 04:57:44, Russell Reagan wrote: >On June 21, 2002 at 04:38:04, Uri Blass wrote: > >>How much time does your program need to see that it is a draw? > >At least a few more weeks :) > >Russell It is an easy draw for the following reasons; 1)White need always to move the knight by Nb3 N.. Nb3 N.. Nb3 N.. when the knight is never captured(the knight is never captured in b3 and we need to prove that the knight has a safe black square to go in order to prove that it is a draw). 2)The black king cannot control a1 so the black bishop needs to be in the long diagnol in order to prevent a1 from the knight. 3)The black bishop in the long diagnol can not control a5 so the black king needs to control that square. 4)3 means that the black king cannot control c1 and d2 so the black bishop needs to control these squares but the black bishop must be in b2 in order to control both a1 and c1 and it does not control d2 from that square. I believe that even programmers with rating of 1500 can find that it is a draw and I wonder if one of them was smart enough to write the relevant code to explain it to the computer. Uri
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