Author: Ed Schröder
Date: 04:08:04 08/29/98
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>>One thing I did note is that Crafty's time utilization seems haywire in the >>games... you didn't say how you played them, but if you are playing on the >>same machine, that will cause problems from my end for sure, as time >>allocation depends on "pondering"... if it is off, it will get into time >>difficulties later in the game, every time... >Fritz engines in internal engine match always run without PB (and yes, I >clearly stated this). I deliberately used 25'+12" to avoid any time trouble situation >caused by time management problems ... Crafty's time allocation looked similar >enough to Junior's (or anybody elses) that I didn't suspect any problems ... Bob is right here. Testing chess program without Permanent Brain (PB) is a waste of time if you want an accurate result. The time algorithm's in chess programs are written in cooperation with the PB. Without the PB a chess program after some time (say after move 20) will automatically become into time trouble resulting in bad moves. I already pointed that out when the Crafty-Rebel NPS game was running. In this NPS game Rebel in several cases did come into time trouble because the lack of the PB. The same applied for Crafty in this game as also Bob pointed out at the time and I agree with him. Unless a chess program has a *SPECIAL* time control routine for handling games played without PB, games played on one PC IMO should be considered as fun and no more than that. This also counts for my own build-in Rebel autoplayer were you can autoplay Rebel engines. Playing games without the PB I consider the same as playing games without an opening book. As the opening book the permanent brain is an essential part of a chess program. - Ed -
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