駒の展開

(1)a state in which things are improving; the result of developing (as in the early part of a game of chess); "after he saw the latest development he changed his mind and became a supporter"; "in chess your should take care of your development before moving your queen"

(2)ものごとが改善しつつある状態

(3)発達した結果（チェスのゲームの初期のように）

(1)