Author: martin fierz
Date: 05:29:44 01/15/04
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On January 14, 2004 at 23:20:24, Robert Hyatt wrote: >On January 14, 2004 at 21:38:08, Federico Corigliano wrote: > >>Hi to all >> >>In my engine I use some bitboards, but nothing about rotated bitboards for >>bishop, rooks and queen moves. >> >>What chess sources or web pages can you recommend me? >> >>One answer can be Crafty. Seems to be a little difficult to understand but I >>don't tried yet :-) >> >>Greetings, >>Federico > > >go to > >www.cis.uab.edu/info/faculty/hyatt/hyatt.html > >go down about 2/3 and look for "online reports". Click that, then click >the link for rotated bitmaps and read away. :) bob, i have i question about this: how much faster are rotated bitboards than "normal" bitboards? my program uses bitboards, but i compute attacks of sliders by looping over the board. can you give any kind of estimate of how much faster you are by using rotated bitboards for attack generation (i don't mean the overall program speed)? i couldn't find that in the paper... cheers martin
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