Author: blass uri
Date: 13:21:01 05/12/00
[D]1r3nk1/3rb1p1/p2p1pP1/1p2p3/Pnq1P1R1/2N1B3/1PPR3P/2NQ3K w - - 0 1 This position is from the ssdf games(Junior5-Junior6). The evaluation was close to equality and suddenly Junior5 failed high and found more than 1 pawn advantage for white. I post this position to demonstrate the fact that tactics is not only sacrifices. Unfortunately tactical test positions are usually sacrifices. I am also not sure if there is only one good move for white. White played in the game Rg2. This is a good move with the idea to give mate by Rh4 and Qh5 but I am not sure if this is the only good move and it is possible that axb5 and after it Rg2 also give the same result(I did not check it) The point is not to find Rg2 but to find a significant change in the evaluation. How much do programs need to fail high? I think it is a good idea to generate a tactical test suite based on positions from practical games and not based on finding sacrifices. In order to do it we need to analyze many games and find cases when there is a significant change in the evaluation. Uri
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