Author: David B Weller
Date: 06:26:19 01/30/06
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I am thinking of positions investigated within the search tree. Therefore, any previous move, which was [or may be] chosen on the basis of these 'horizon/delay' moves, may be taking positional [or otherwise] losses. IE, the distinction that the move must worsten the position, isnt correct [within the search tree] because the position could have been [inevitably]ruined already, but the horizon move makes it look better than it is. So, IMHO, _ANY_ time, a forced sequenced can _push_ a loss over the horizon, this is the 'horizon effect' Search 'saw' the loss along all its other lines of play. When losses are already beyond the horizon, of course this is just lack of search depth.
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