Kriegspiel

[kreeg-speel, -shpeel, kreek-] /ˈkrigˌspil, -ˌʃpil, ˈkrik-/

noun
1.
(sometimes initial capital letter) a game using small figures and counters that represent troops, ships, etc., played on a map or miniature battlefield, developed for teaching military tactics to officers.
2.
a form of chess in which both players see only their own pieces on a board in front of them and must remember the opponent’s moves as told to them by a referee who maintains a third board on which the play of both players is shown.
/ˈkriːɡˌspiːl/
noun
1.
(sometimes capital) a form of war game in which symbols representing military formations are moved about on maps
2.
a variation of chess in which each player has his own board and men and does not see his opponent’s board and men. The moves are regulated by an umpire on a third board out of sight of both players
noun

chess using two separate boards where neither player sees the other board and in which play progresses from limited information given by a referee who tracks the moves on a third board
n.

war games played with pieces on maps, 1811 as a German word in English, from German Kriegsspiel, literally “war game,” from Krieg “war,” from Middle High German kriec, “combat,” mostly “exertion, effort; opposition, enmity, resistance,” from Old High German chreg “stubbornness, defiance, obsinancy,” perhaps from PIE *gwere- “heavy” (see grave (adj.)) or cognate with Greek hybris “violence” (see hubris; cf. also war (n.)). For second element, see spiel (n.). Introduced 1870s as officer training in British army.