catflap.org Online Dictionary Query

  opening move
       n : the first of a series of actions; "he memorized all the
           important chess openings" [syn: first step, initiative,
            opening]

  opening move /ˈəʊpənɪŋ mˈuːv/
  Eröffnungszug 
           Note: Schach
     Synonym: opening play
  
   see: move in a/the game, move, play, moves, It's your turn.
  

  21 Moby Thesaurus words for "opening move":
     alpha, breaking-in, first, first blush, first glance,
     first impression, first inning, first lap, first move, first round,
     first sight, first stage, first step, gambit, initial, initiative,
     le premier pas, prime, primitiveness, primitivity, warming-up