Author: Oliver Roese
Date: 18:24:02 09/11/99
Dear Chessplayers I have the following question to the "pro's", regarding searchextensions: As far as i have understand it, these extensions are necessary (at least) to not "fool" the computer into thinking, it would be best, to simply take a piece with his last move. I have checked the program "TSCP 1.3", and have found that it always evaluates the positions, that SEE left behind. But that introduce another problem (at least i think so), namely that the computer plays some variant of "Exchange-chess" at the last ply, to say it drastically. As a chessplayer i know that this hurts, but i do not know how much and that is my question. I provide an example: White has a pawn on e4 and a knight on d5. Black has pawns at d6 and e5 and a black bishop. No other "lightweighted" officers are present. White has then the advantage of "the strong knight". But if black is so clever to put its bishop on e7 the computer will never know that! Let us now assume the knight is placed on c3. The computer may know, that he has an advantage, but he would not be allowed to place his knight on d5...and so on. As a general rule, "overactive" moves would be punished, whereas "subtle" moves will keep active pieces active and not trade them with "victims"... But this is _only_ a theory! I would like to hear your opinions. Best Regards Oliver Roese <oroese@edina.xnc.com>
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