Author: Bob Durrett
Date: 16:42:31 12/08/02
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On December 08, 2002 at 18:35:12, Sune Larsson wrote: >On December 08, 2002 at 08:34:16, Bob Durrett wrote: > >> >>I am interested in knowing whether or not modern chess engines recognize >>advantages of these types. >> >>(1) If the White side has a substantial space advantage, but nothing else, will >>the chess engine evaluate the positions with that advantage and give it a high >>score? >> >>(2) If the White side has a substantial time (or development) advantage, but >>nothing else, will the chess engine evaluate the positions with that advantage >>and give it a high score? >> >>(3) If the White side has a substantial pawn structure advantage, but nothing >>else, will the chess engine evaluate the positions with that advantage and give >>it a high score? >> >>(4) If the White side has a substantial material advantage, but nothing else, >>will the chess engine evaluate the positions with that advantage and give it a >>high score? >> >>(5) If the White side has a substantial initiative advantage, but nothing else, >>will the chess engine evaluate the positions with that advantage and give it a >>high score? >> >>Bob D. > > > Your idea is interesting. Chessplayers often speak about *space* advantage. > And this concept is closely linked to *mobility*. Just look at the position > after 1.e4 d6 2.d4 e6 - and study the bishops. White has an advantage in space > and has more squares, for his bishops, at his disposal. > If you give me *time* odds of four moves - let's say 1.e4 2.d4 3.Nf3 4.Nc3, > you also give me an advantage in *space* and *mobility*. Another central > concept is *activity*. Players are willing to give up material to create > "nice activity", which might be linked to space + mobility + initiative. > So...;-) > > /s I have now looked at several books containing chapters discussing "space advantage." These same books talk about other advantages. I guess the game of chess is a bit more complex than I, as a chess amateur, had imagined. We need to find a way to make this relevant to chess software, since this is a computer chess bulletin board. Maybe the way computer chess engines work somehow takes care of positions that contain, among other things, "positional advantages/disadvantages." If these advantages/disadvantages are always accompanied by other advantages/disadvantages, including tactical, then the "purely positional position" may not exist in chess. : ( It MAY be possible to find chess positions containing multiple advantages/disadvantages but where the space advantage/disadvantage dominates, i.e. determines the best move from that position. For example, the idea that it might be best to further restrict the choices of the opponent might dictate choice of a move that accomplishes that. In that case, the space advantage would be the main consideration in selection of the move. Your link of "space advantage" to "mobility" may mean that a chess engine that evaluates piece mobility [among other things] would indirectly evaluate space advantage as well. Restricted pieces have less mobility. If all on one side's pieces have reduced mobility, then the other side may be said to have a space advantage. Interesting. Do chess engines evaluate "activity"? Bob D.
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