Author: Tord Romstad
Date: 07:46:29 12/04/03
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On December 03, 2003 at 17:25:29, Dann Corbit wrote: >On December 03, 2003 at 17:04:09, Tord Romstad wrote: > >>On December 03, 2003 at 16:07:09, Dann Corbit wrote: >> >>>You can save a lot of time running WAC by just running these. The others are >>>all trivial for all but the weakest engines: >> >>(List of positions snipped) >> >>I think the whole suite is useful, mainly in order to make sure you haven't >>broken something when you have made a non-trivial change somewhere in the >>search. >> >>Is there any system in the order in which you list the positions? > >Look at the position strings lexically. Aha, of course! I should have noticed. :-) >>It >>all looks completely random to me. For what its worth, here they >>are in increasing order of difficulty (measured by number of positions to >>solution) for my engine: > >It is a list of often missed positions. Some of them will be very easy for many >engines. Of course. >>Number Plies Time Nodes >>141: 7 0.29 52911 > >This is impressive. WAC.141 is one of the harder ones for many engines. I have checks in the qsearch and extend on mate threats in the main search, which of course helps a lot in WAC 141. >>100: ? ? ? >>230: ? ? ? > >Very few engines get the last 2. OK, it seems I shouldn't worry too much about these two, and try to be satisfied that I solve most of the others rather quickly. >In WAC.230, there is some question as to whether it is even a solution. >However, it is the only move with any winning chances. I didn't know. Thanks for the information! Tord
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