Author: Robert Hyatt
Date: 21:22:20 08/10/99
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On August 11, 1999 at 00:04:42, Ratko V Tomic wrote: > > So if searching one extra ply discovers something interesting, > > then =Q will get played. If searching one extra ply discovers > > something bad, then we avoid seeing the 'bad' by playing =R. > > >That lack of common sense in the programs is typical. What is >needed is some kind of causal reasoning i.e. it should somehow >figure out that the "bad" thing <b>isn't caused by the extra >mobility</b> of the Queen relative to Rook. For example, once it >is about to pick =R, it should follow through the opponent's >moves it found for =Q (where it ran into something bad; it >doesn't matter that it isn't check for =R, opponent can still play >whatever it did to get out of the check in =Q line). In most cases >the result will be worse in the "=R" variation. You are misunderstanding.... it is _not_ a mobility issue. Because at the next ply, the best move is to take the promoted piece, no matter what it is. But if the promotion is a check, that drives the entire line one ply deeper than it if is not...
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