plural of Semi-Open Game

A type of chess opening, in which White plays 1.e4 (moves their king's pawn to the fourth rank with their first move) and Black breaks symmetry by replying with a move other than 1...e5.

Alternative letter-case form of Semi-Open Game

plural of semi-open game

A chess game in which the queen's pawn advances two spaces in the first ply move, but not in the second ply move.

plural of semi-closed game

plural of game-time decision

(sports) A decision about the conduct of a sporting event, usually one made by the coach regarding which players will start or will play, or which strategy will be employed, which is put off until the start of the game itself.

A chess opening characterized by the move 1.d4, in which the white queen's pawn advances two squares as the first move.

A chess opening characterized by the move 1.e4, in which the white king's pawn advances two squares.