Author: Marc Bourzutschky
Date: 11:54:57 02/06/03
Go up one level in this thread
On February 06, 2003 at 14:42:38, Robert Hyatt wrote: >On February 06, 2003 at 13:24:51, Dieter Buerssner wrote: > >>On February 06, 2003 at 13:14:28, Robert Hyatt wrote: >> >>>I hope that was my point. :) (BTW, I think the king is limited to 1/4 of the >>>board, >>>not 1/2...) Because you can do vertical/horizontal reflections to put the white >>>king >>>in the a1-a4-d4-d1-a1 corner of the board...) >> >>I cannot see, how such a rectangle would be enough. > >I am not quite sure what you mean. You can limit the white king to a single >triangle of 10 squares with no pawns, because then you can reflect the board >along >three different axis points. But when you have pawns, you still ought to be >able >to limit the king to 1/4 of the board, as vertical/horizontal reflections do not >make >pawns move sideways, as they would when you try to reflect in third axis. > >It is just the first cut at reducing the overall size... > > ...but pawns can't move backwards either, eliminating another axis. A white pawn on e7 is quite different from a white pawn on e2 :) >> >>>This means more work as now you have to make each move, and then probe. >> >>This can be (and is in other cases) implemented in the probing code of Eugene. A >> >>Regards, >>Dieter
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