2 | Your moves are decided by the opponent, to a square that you choose.
5 At each turn you must first play a move with opponent's pieces to the
6 marked square, and then play a move freely with your pieces.
7 The target in the first part of the move is indicated either by a colored
8 discus for an empty square, or by a colored piece for a capture.
11 Exceptions: the first move of the game (which just mark a square), and a
12 move which captures a king don't have a second part.
15 No check or checkmate, one wins by capturing the opponent's king.
18 figure.diagram-container
20 | fen:rnbqkbnr/pppppppp/8/8/8/5g2/PPPPPPPP/RNBQKBNR:
22 | fen:rnbqkbnr/pppppppp/8/3G4/8/5P2/PPPPP1PP/RNBQKBNR:
24 Left: White plays 1.Nf3.
25 Right: Black executes 1.f3 instead, then plays 1...d5.
31 a(href="http://www.pion.ch/echecs/variante.php?jeu=ambigus")
33 | by the author of this variant, which is also playable
34 a(href="https://brainking.com/en/GameRules?tp=85") on brainking.com
37 p Inventor: Fabrice Liardet (2005)