Author: James T. Walker
Date: 06:27:22 10/21/00
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On October 21, 2000 at 05:28:14, Uri Blass wrote: >I composed this position to see if chessmaster can see perpetual check. > >[D]4k3/6RQ/6PP/8/r7/8/r7/7K b - - 0 1 > >The target is to see 0.00 score > >I found that chessmaster does not see the draw even after some minutes but after >Ra1+ Kg2 it can see the draw very quickly in clearly smaller depth. > >The same after Ra1+ Kh2 > >I tried also Fritz5.32 and it does not see the draw at least after a short time. > >If I give Fritz5.32 the moves Ra1+ Kg2 it can see the draw but after Ra1+ Kh2 >it has problems to see the draw. > >Fritz5.32 expects Kg2 when it plays Ra1+ and wants to play Kg2 at depth 13 with >evaluation 0.00. > >How many squares can the white king visit before the repetition?(it is clear >that the white king cannot visit all the 21 squares (b1-b3... h1-h3)) > >Uri Hello Uri, Why can't the White King visit all 21 squares? If the King takes the pattern of h2,g1,g2,f1,f2,e1,e2,d1,d2,c1,c2,b1,b2,b3,b2,c3,c2,d3,d2,e3,e2,f3,f2,g3,g2,h3,h2,h1,g2,f1,f2,e1,e2,d1,d2,c1,c2,b1, it has visited all 21 squares and taken 38 moves without hitting the same square 3 times. What did I miss? Jim
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