Rules

• At each ply, the player can either bring a new piece into play, or move an existing piece in the board.
• The first move for each player (white and black), must be bringing the King into play.
• Pieces being brought into play cannot be placed over an existing piece.
• White can only check black after black has checked or at ply 4 (whichever is earlier).
• Black cannot check white before ply 2.