A game starts on an empty chessboard.  Adversaries place chess pieces by turns, at their own sides, on four horizontals. At 17th move whites make moves, and blacks are entitled to kill at 17th move a chess piece of the adversary, rocking is also allowed if the king and the rook are in a starting state of classic chess.
    Beside these changes, rules of free chess are analogical to rules of classic chess approved (certified) by FIDE.

 Game for demonstration
GM G. Kacheishvili GM. L.Janjghava
28 February 1998