Author: Dan Newman
Date: 14:41:07 08/27/00
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On August 27, 2000 at 08:54:51, Brian Richardson wrote: <snip> > >One awkward thing for me right now relates to predicted moves. Generally, if >Tinker ponders for longer than the normal next move search time and the >predicted move is made, then Tinker moves immediately. Unfortunately, the score >and PV from the pondering are lost and bogus values are reported from the >abnormally short search. This is annoying when reporting, and a real problem >when going back to do position learning. I am thinking of just saving the >pondering search results separately for these cases. Any other suggestions? > What I do for pondering is just do a normal search with the time limit set to "infinite". Then when the opponent's move comes in I either break out of the ponder search and start a new search (in case his move is different from the predicted move), or I just set the time limit and continue searching without breaking out of the ponder search. If the time has already expired, the search will immediately terminate as it ordinarily does when it runs out of time, with the full PV and so forth retained. Of course the code that does all this is one of the ugliest parts of my program, very difficult to debug, and I don't entirely understand it :). >The situation is similar but worse when there is only _one_ legal move, which >Tinker makes immediately. I was reporting the raw root eval(), but this caused >Tinker to resign a KNNvK game (which Tinker had seen was drawn according to >EGTB's). I suppose EGTBs should be checked too. > Mine does this too. I end up without any ponder move for the next go, so my program just sits there waiting... I plan to add somthing that will find a ponder move when there is none, but just haven't gotten around to it. -Dan. >Finally, a different format would apply to book and/or learning moves, of >course. I'll raise the issue even though Tinker _still_ has no book. > > >Thanks, >Brian
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