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The '''Center Distance''' is the [[Distance|distance]] (also known as [https://en.wikipedia.org/wiki/Chebyshev_distance Chebyshev distance]) or number of [[King]] moves on the otherwise empty board from any square to the four squares {d4, d5, e4, e5} in the [[Center|center]] of the board. In conjunction with [[Center Manhattan-Distance|Center Manhattan-distance]] a constant [[Array|array]] might be considered as the base of [[Piece-Square Tables|Piece-square tables]]. Center distance is used in various [[Evaluation|evaluation]] terms, for instance to encourage the king to [[King Centralization|centralize]] in the [[Endgame|ending]], as well in [[Mop-up evaluationEvaluation]].