Author: James T. Walker
Date: 08:30:36 04/15/02
Go up one level in this thread
On April 14, 2002 at 12:38:46, Sune Larsson wrote: >On April 14, 2002 at 12:32:07, Roy Eassa wrote: > >>On April 14, 2002 at 09:02:37, Sune Larsson wrote: >> >>> >>> [D]8/1P3kP1/2P5/2K5/5b2/2B2b2/8/8 w - - 0 75 >>> >>> >>> This is from the game Jurasek 2305 - Piza 2290, 1997. >>> White can make no progress so the game was drawn here. >>> >>> Evals from some programs: >>> >>> Yace +- 1.96 1.Kb6 Ply 17 >>> Junior7 +- 2.12 1.Bd4 Ply 22 >>> ShredderP +- 2.61 1.Bf6 Ply 19 >>> CM Nextas +- 2.66 1.Kb6 Ply 16 >>> Fritz 7 +- 3.25 1.Ba1 Ply 17 >>> CT 14 +- 3.98 1.Kb6 Ply 19 >>> >> >> >>If the humans were only rated around 2300 and Fritz 7 is rated over 2650, then >>Fritz's evaluation of +3.25 (or Tiger's eval of +3.98) must be correct and the >>humans' evaluations of +0.00 (drawn) must be wrong. >> >>Surely weak humans of 2300 can't understand more about a position than mighty >>machines of 2650+. >> >>Right? > > > Right! ;-) I don't believe modern chess programs understand any positions. Sometimes their eval functions match what humans think is correct and they are said to "understand" this position. ?? Most chess programs are written to play chess and not correctly evaluate board positions. That is they are designed to play the best moves in literally any situation that arises. Of course none can do that perfectly. If I had written any of the above mentioned programs I would not concern myself with the "score". I would only be concerned with the program making the best move in that position. The score is simply a means to decide which move is the best. The fact that they don't seem to agree on what is the best move here may be the telling factor. Maybe there is no "best move". I doubt that any of the programs would lose this position from either side against a 2300 player. That is more important than spitting out the exact score for the position. (IMHO) Jim
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