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 trick, which requires the combined skills of a tightrope walker and a cordon bleu chef frying a plain egg, is to take your [preteen] daughter seriously without taking everything she says and does every minute seriously.”
—Stella Chess (20th century)
“The sailor is frankness, the landsman is finesse. Life is not a game with the sailor, demanding the long head—no intricate game of chess where few moves are made in straight-forwardness and ends are attained by indirection, an oblique, tedious, barren game hardly worth that poor candle burnt out in playing it.”
—Herman Melville (1819–1891)