Author: Daniel Shawul
Date: 04:45:08 11/22/05
Go up one level in this thread
On November 22, 2005 at 07:22:15, Daniel Shawul wrote: >On November 22, 2005 at 03:52:57, Uri Blass wrote: > >>On November 22, 2005 at 03:10:35, Ernst Walet wrote: >> >>>...makes me sick in the stomage. >>> >>>QUOTE >>> >>> When you play through this game, take a look at the forced sequence commencing >>>with Fritz’ …Bc2, and count how many ply there are from there to the position >>>when Matthias Feist resigned on Fritz’ behalf. Then add a few more ply because, >>>in the final position, although Black will inevitably be saddled with a decisive >>>material deficit, at that moment the program still had two minor pieces for a >>>rook. So the depth to which Fritz would have needed to search in the critical >>>variation, in order to realise that …Bc2 was a losing move rather than a winning >>>one, was quite beyond the program’s capability. >>> >>>UNQUOTE >>> >>>So much for the human like "knowledge" of Fritz. >>> >>>Ernst. >> >> >>This position is from the game >> >>Fruit has no problem to evaluate it by static evaluation as advantage for white. >> >>It has no "human" knowledge about bad trades. >>Note that this is not the only explanation and Movei also has no human knowledge >>about bad trades(it simply evaluates bishop and knight as more than 3 pawns so > I have tried not giving bonus for bad exchanges but it didn't work for me. >Especailly in tactical positions because the program will spend evaluating >positions where it is down by a minor, but still trying to compensate it by >positional means. Fritz may be giving a big bonus for the excahnge, and this >combined with some pruning may prevent it from searching for positional >compensaiton further. For example in your position below scorpio gives -132 for >white, but search will reveals white is +350 with a6! I chose it to be this way >. When the bad trade code fails like it happened to fritz it will be noticed! >but not giving bonus is not smart either. Fruit / Movie will be disadvantaged in >postions where the bad trade is really helping. >Daniel > Looking at chessbase explanation, Fritz must be very! materialistic( giving big bonus for the exchange) to not ever solve the position. so it is probably something else. >>it usually avoid bad trades) and it seems that fruit simply has superior >>knowledge about pawn structure. >> >>6: Ponomariov,R - Fritz, Man vs Machine II 2005 >>[D]8/P4pk1/2bp4/P2p4/2nPp2p/4P2P/6K1/2R5 w - - 0 1 >> >>Analysis by Fruit 2.2.1: >> >>47.Kf2 >> = (0.24) Depth: 1/6 00:00:00 >> >> >>Uri
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