Author: Vasik Rajlich
Date: 03:09:35 03/17/04
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On March 16, 2004 at 18:58:46, Dann Corbit wrote: >See this thread: >http://www.talkchess.com/forums/1/message.html?354948 Actually, it's a big problem to find a good tactical testsuite. A month or so ago I went through BTS2830, trying the positions on the commercial programs in order to understand their search better. First problem is the false solutions. Rxe6 here is one of them - it's totally unclear if it's better than Qh3. Another one was #2 or #3, where the "solution" is .. Bh3+. Totally unclear if it's better than just .. Bg4, both are winning. Second, much bigger, problem is that most of the problems are solved through evaluation, not search. I would like positions where there comes a clear moment in the search which you have to get to in order to "see" the solution. If I remember correctly, there were only 2 or 3 positions in the entire BTS2830 which met this criterion. Third problem is positions which it's possible to "solve" without understanding. (This could also be thought of as a problem with the Chessbase GUI which won't let you set a score margin.) It would also be nice to have a testsuite which has a certain consistent level of difficulty. WAC is not interesting for this reason. Anyway, I have some position-by-position notes on BTS2830 in Augsburg, could post them next week. Cheeers, Vas
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