Author: James Long
Date: 18:26:52 02/24/99
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On February 24, 1999 at 21:09:18, James Long wrote: >On February 24, 1999 at 21:06:11, James Long wrote: > >> >>I'm seeing another problem using the 4 man tb's. >> >>When I set up this position: >> >>7k/7p/8/8/8/8/5KP1/8 w - - 0 1 >> >>and start the search, the result is "draw," the >>move is g3. >> >>As soon as the move gxh5 is made, the score >>is "mate in 25." >> >>At this point the white king abandons the pawn >>and goes for a stroll, but the score still >>reflects a mate. >> >>The black king doesn't capture, even though >>he could. The pawn promotes and the black >>king is eventually mated. >> >>I'm validating the tablebases now, but I think >>something strange must be happening in my search. >> >>Frustrating. :-\ >> >>Anybody else seen something like this ? >> >>BTW - it's not the null move. I disabled them >>and the results were the same. >> >>-- >>James > > >Turns out there are error with the tb's. >"Unable to read krkr.nbw.emd - file broken." > >I just created them! Wonder what happened... > >-- >James I've found a problem: After generating the three man tablebases and verifying them, there are no problems. I even ran tbstat and saw no broken positions. After than I compressed krk.nbw, and reverified krk by typing "tbgen -m 4 -c 1 krk" : no problems. When I run "tbstat krk.nbw.emd" there are 21 broken positions... I'm running Win98, using the executables from Hyatt's FTP site. --- James
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