In Chess
One popular strategy for constructing evaluation functions is as a weighted sum of various factors that are thought to influence the value of a position. For instance, an evaluation function for chess might take the form
- c1 * material + c2 * mobility + c3 * king safety + c4 * center control + ...
Such as
- f(P) = 200(K-K') + 9(Q-Q') + 5(R-R') + 3(B-B'+N-N') + (P-P') - 0.5(D-D'+S-S'+I-I') + 0.1(M-M') + ...
in which:
- K, Q, R, B, N, P are the number of white kings, queens, rooks, bishops, knights and pawns on the board.
- D, S, I are doubled, backward and isolated white pawns.
- M represents white mobility (measured, say, as the number of legal moves available to White).
Read more about this topic: Evaluation Function
Famous quotes containing the word chess:
“The chess pieces are the block alphabet which shapes thoughts; and these thoughts, although making a visual design on the chess-board, express their beauty abstractly, like a poem.... I have come to the personal conclusion that while all artists are not chess players, all chess players are artists.”
—Marcel Duchamp (1887–1968)
“It’s a great huge game of chess that’s being played—all over the world—if this is the world at all, you know. Oh, what fun it is! How I wish I was one of them! I wouldn’t mind being a Pawn, if only I might join—though of course I should like to be a Queen, best.”
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)