Author: Thorsten Czub
Date: 00:59:23 08/02/05
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Genius (all Richard Lang programs) computed asymetrically. Instead of a normal capture search, it had static exchange evaluator and this special search. plies 1-3-5-7-9 were pruned different then 2-4-6-8... the effect was that it did not always THE BEST move in ply 1-3-5-7-... result: boring playing style. no active but passive behaviour. the effect: computing against a NORMAL program, it happened very often that genius did a move the opponent would NOT have imagined. breaks PB. CSTal was opposite. it pruned more in opposite plies. result: active play. sacs. when CSTal sacced it mostly never thought the opponent would TAKE the sac. There was a Saitek dedicated chess computer that was not only computing on ONE PB move but on many. The effect was that almost all the time the machine had a move and the move came in an instant. it was a good blitz opponent :-) no - the name of the machine was NOT Saitek Blitz. This was a strange machine in design and technic, but it had not the DIFFERENT pb. don't forget that many people use chess engines on ONE PC and there most often (depending on hardware used) the PB is knocked off.
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