Author: Thorsten Czub
Date: 03:24:04 02/24/98
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I thought fritz/nimzo vs. Rebel are an exception ! :-) From my point of view there is NO pattern in the games - rebel8/9 looked pretty outsearched ! And this means you don't get a typical pattern like : your king safety is too weak or enemy handles the pawns better or whatever. Concerning the hash-tables I have to admit that fritz seems to handle them different than other programs. fritz is very hash-table sensitive. I don't think other programs behave the same way concerning hash like fritz does. Maybe Frans has programmed something different. You can test yourself by reducing hash-tables in fritz5 and find out THAT fritz is very sensible if you reduce the hash. no - the fast searchers have - for the first time in the history of computerchess and ssdf-list, overtaken the knowledged based programs. THATS the big surprise. When we played in Paderborn we had many discussions concerning OUTSEARCHING the opponent, due to the fact that ChessTiger and Nimzo98 behaved like this. Nimzo98 outputs did not show this but the games looked like this. Any opponent of ChessTiger was starring with wide eyes on it's search depths. Vincent ran arround and told anybody stories about SCHACH3.0. In the game vs. clever+smart e.g. this was very easy to see. Clever got a fail-high, and after 2 minutes a bad fail-low following Tigers moves. Nimzo98 attacked Tiger like hell, the game turned arround several times. But - in the end was also a draw. Maybe Fritz5 with big hash can OUTSEARCH the others, meanwhile fritz5 with LESS hash cannot do this. I have tried it out myself by putting enough ram into my machine. The changes were drastic. WHY ? WHat is Frans doing with the hash-tables ?Or better - what is he doing different that increasing of hash lets the playing-strength increase linear ! One main thing of course is the big number of HITS fritz gets with computing almost 200K NPS.
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