Author: KarinsDad
Date: 21:21:30 06/08/99
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On June 08, 1999 at 23:50:14, Peter Kappler wrote: [snip] > >There is no question that Garry makes mistakes in his games - I didn't mean to >imply that he is anywhere close to playing perfect chess. > >The key question is how wide is the drawing margin in chess? There are >countless material-down endings that are drawn, and we all have seen games where >one side has a nagging edge for the entire game but it isn't quite enough to >convert to a win. However, we do not know whether the "nagging edge" advantages wouldn't convert to easy wins with a perfect tablebase. There are many endings which the best endgame GMs in the world thought were wins or draws (after a lot of analysis) and the endgame tables proved that the result was different than expected. If this could occur repeatedly with 4 and 5 piece endgames, why would you think that 32 piece tablebases would not immediately slam even the most subtle of mistakes (let alone multiple subtle mistakes made throughout an entire game)? Just due to the SHEER complexity of chess, it seems that no human could ever compete against a perfect tablebase. I guess the reason this seems obvious to me (regardless of whether it is correct) is that I have a theory that when humans play against each other, they accidentally fall into inferior or superior positions. In other words, a computer may see that a given move has a tactical mistake 14 ply down, but a human does not see it. He looks down 10 ply and sees no problem and in fact, may think that he is winning. A few moves later, his opponent suddenly finds himself in a winning position and does not even realize how he got there. Computers have this same problem. Their evaluation says that they are up a pawn and within 5 moves for each side, the winning side is suddenly losing. With a perfect tablebase looking down 150 ply, I can conceive that even opening moves which are perfectly valid or strong right now could be proven to be flawed. Does this make sense? KarinsDad :)
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