Author: Roy Eassa
Date: 12:33:11 10/11/02
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On October 11, 2002 at 15:14:55, Matthew Hull wrote: >On October 11, 2002 at 15:00:05, Roy Eassa wrote: > >>I have very gradually come around to the idea that what makes a chess computer >>good against other chess computers may be quite different from what makes it >>good against strong human chessplayers. >> >>Some years ago, PCs were slow enough that the chess author had no choice but to >>write the program to maximize the search, or else even moderately strong humans >>could win simply by tactics. But I think now, with PCs over 2 GHz, just 25% of >>the computer's power is more than sufficient tactically against humans. Against >>other computers, every ounce of speed must be used to search deeper, as in Fritz >>or Ruffian. But against humans perhaps the great majority of the power of the >>CPU needs to be used exclusively to play anti-human chess: avoid locked >>positions, avoid allowing certain types of attacking formations, "understand" >>many, many types of positions better, etc. Such a program would likely perform >>very poorly against the likes of Fritz but could perform much better than Fritz >>does against top humans. >> >>My thought: there should be two totally different classes of chess programs: >>those that are designed to win against other programs and those that are >>designed to win against humans. And if you want to create a program that claims >>to do both, you should have it swap in a completely different set of algorithms >>-- and not just change a few settings -- depending upon the opponent (human or >>computer). > >I believe Crafty has some internal lists of opponents which the user can supply >that can be compared to the opponent name supplied by Xboard. The program will >adjust it's play if the opponent is on the GM list or the B(locker) list, or the >C(computer) list. But my point was that adjusting its play is not enough. More like throwing out 90% of the software and loading a completely different program (except for the WinBoard communication part).
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