Back المباراة نصف المفتوحة Arabic Poluotvorena partija BS Obertura semioberta Catalan Polootevřené zahájení Czech Halboffene Spiele German Ημιανοικτό άνοιγμα Greek Duonmalfermita malfermo Esperanto Apertura semiabierta Spanish Hasiera erdireki Basque گشایش نیمهباز Persian
A Semi-Open Game is a chess opening in which White plays 1.e4 and Black breaks symmetry immediately by replying with a move other than 1...e5. The Semi-Open Games are also called Single King Pawn, Asymmetrical King Pawn, or Half-Open Games (or Openings), and are the complement of the Open Games or Double King Pawn Games which begin 1.e4 e5.