Author: Don Dailey
Date: 13:04:57 08/02/98
Go up one level in this thread
On August 02, 1998 at 15:30:17, Robert Hyatt wrote: >On August 02, 1998 at 12:25:52, Robert Pawlak wrote: > >>On August 02, 1998 at 09:36:20, Robert Hyatt wrote: >> >>>>>3. factor in some sort of random number so that positions that are bad >>>>>will randomly look less bad or actually look good. Or, if the random >>>>>addition is large enough, but infrequent enough, the program might begin >>>>>to make tactical blunders (ICC has some *bach programs that do (or did)) >>>>>this, and they would make an occasional blunder like a weaker human). >> >>I think I remember playing one of these, and having bach overlook a mate in 1! >>(is this possible, or is my memory confused) Yeah, this is what I want :) >> >>But seriously, from a marketing standpoint, I think that good handicapping could >>be an effective selling point for some of the up-and-coming software. >> >>It is probably too much to ask Ed which approach he uses - probably a trade >>secret. >> >>Bob P. > >This is a difficult problem. You want a program to play worse, but a 1500 >player does't hang his queen very often, nor does he overlook mate in 1 very >often. That's what I don't like about the handicapping ideas I have tried so >far... program still plays like s 2200 player except for an occasional mistake >that looks like an 800. > >I think you have to tone down the search + qsearch as Don suggested, but I think >you also *must* tone down the positional scores. IE does a 1200 player really >know much about distant passed pawns, outposts, backward pawns, etc? Crafty at >2 plies still plays non-1500 chess, although it might overlook something >tactically that a 1500 player would probably not... It depends on whether you are just trying to weaken the program to some level, or you are trying to simulate a weak HUMAN player of that level. But your point is well taken. A 1 ply search can play pretty good positional chess compared to a beginner (like actually developing pieces logically) and this could be frustrating too. - Don
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