Author: Robert Hyatt
Date: 11:52:02 11/17/97
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On November 17, 1997 at 13:52:58, Manuel Rodriguez Blanco wrote: >I know that a 6 or 7 pieces (including both king) ending database take a >lot of disk space, but suppose for a moment that disk space is not a >problem, how much time will take to a especial program for generate this >database in a fast pc? and how much time will take to generate this >database with DeepBlue ? > > >Thanks, > >MRB. First a math lesson. KRPKR (king + rook + pawn vs king + rook) takes about 1 gigabyte. Add one more piece and you need 64 gigabytes. Add one more and you need 4 terrabytes. Second, deep blue doesn't generate databases. Just like Crafty doesn't generate 'em. This process is totally different from playing chess and searching the game tree. Finally, no idea how long, but KRP vs KR takes about 2 weeks with Steven Edward's program, 2-3 days with Bruce's program. How much to add for another piece is hard to estimate, because it is not the number of pieces as much as it is how deep is the mate? IE 6 piece endings could have mate in > 300, which is going to take a *long* time to run for those that are difficult like that...
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