The Mill Nine Men's Morris

Gameplay proceeds in three sequential phases. Phase one, the placement phase, begins with an empty board. Each player alternately places one piece on any vacant intersection point. A player may form a "mill" by placing a piece that completes a straight line of three pieces along one of the board's lines. Upon forming a mill, the player immediately removes one of the opponent's pieces from the board, provided that piece is not part of a mill itself, unless all opponent pieces are in mills. Phase two, the movement phase, begins after all 18 pieces have been placed. Players take turns moving one of their pieces along a drawn line to an adjacent empty intersection point. Forming a mill during movement allows the same removal of an opponent piece. Phase three, the flying phase, is activated when a player is reduced to exactly three pieces. That player may then move any piece to any empty intersection point on the board, not just adjacent ones. The game ends when a player has only two pieces remaining or when a player has no legal moves available, resulting in a loss for that player. Controls are typically mouse-based or touch-based. A player selects a piece by clicking or tapping on it, then selects the destination point. To remove an opponent piece after forming a mill, the player clicks or taps on the target piece. The interface provides visual feedback, such as highlighting valid moves and indicating whose turn it is. A menu or button allows starting a new game, adjusting difficulty, or undoing the last move.