Author: George Tsavdaris
Date: 07:46:49 11/19/04
Go up one level in this thread
On November 19, 2004 at 10:16:11, David Dahlem wrote: >On November 19, 2004 at 07:18:28, George Tsavdaris wrote: > >> Actually, for an experienced Chess-engine user like you, it is easy to see that >>when having a specific "small" score for many plies up to 16, which doesn't >>change at all, then the position is most probably a draw if we are talking for >>an edngame. (Smarthink finds the draw but it's materialistic DNA, prevents it >>from showing a zero score.) > >A draw score is 0.00 as evaluated by engines. It's not up to the user to read >the mind of an engine and interpret something different than the engines >evaluation. An evaluation of +1.23 certainly can not be interpreted as a draw >score!! > What do you mean with "it's not up to user"? If you suggest that the user should see ONLY the score of an engine in order to say if the position is "white/black wins" or "white/black has the advantage" or "game is draw" then i believe you are wrong. Someone has to see BOTH the score and the tendency of the score to value a position. For example if an engine for position A, gives the following: Ply-12 = 6.00 Ply-13 = 5.87 Ply-14 = 5.48 Ply-15 = 4.32 Ply-16 = 2.52 while at position B, gives: Ply-12 = 1.02 Ply-13 = 1.37 Ply-14 = 2.48 Ply-15 = 2.32 Ply-16 = 2.52 then you most probably(in most cases/positions) be wrong if you assume that both positions are big advantages for white, since at P-A we have a huge fail low that we can't be sure where it will end, while at P-B we have a more stable situation, although the scores at both positions are the same. Another example is if an engine for position C which is an endgame with very few pieces, gives the following: Ply-10 = 1.12 Ply-11 = 1.14 Ply-12 = 1.14 Ply-13 = 1.14 Ply-14 = 1.14 Ply-15 = 1.14 Ply-16 = 1.14 Ply-17 = 1.14 while at position D which is an endgame with very few pieces, gives the following: Ply-12 = -0.12 Ply-13 = -0.16 Ply-14 = 0.00 Ply-15 = 0.37 Ply-16 = 0.58 Ply-17 = 1.14 then you most probably(in most cases/positions) be wrong if you assume that both positions are advantages for white, since at P-C we have a stable "small" score for the last 8 plies, while at P-B we have a fail high that may end to a score +2.50 for example in favour of white, although the scores at both positions are the same. This stable "small" score shows that most probably white hasn't any really good move to do, but only just play it's pieces around although it has a small advantage(a Pawn more or some mobility more) and since most engines don't have the ability to interpret that this small advantage will lead to a draw, they just show this small advantage until we reach 50-move rule.
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