Nine Men's Morris

Nine Men's Morris is a strategy board game that dates back at least 3,500 years. Archaeologists found a board carved into the roof of the Kurna temple in Egypt, and similar boards appear in the ruins of Troy and ancient Rome. Two players place 9 pieces each on 24 intersection points across three concentric squares. Form a mill (three pieces in a row) to remove an opponent's piece. The game unfolds in three phases: placing, moving, and flying. A 2018 study in the journal Cognition showed that playing abstract board games like this improves planning and spatial reasoning in children. Our version runs entirely in your browser with an AI opponent and a local two-player mode. Start placing pieces now.

1. The board has 24 intersection points arranged as three concentric squares connected by lines. Each player gets 9 pieces.
2. In the placing phase, players alternate placing one piece per turn on any empty intersection point.
3. When you place a piece that completes a row of three (a mill), you remove one of your opponent's pieces. You cannot remove a piece that is part of an opponent's mill unless all their pieces are in mills.
4. After both players place all 9 pieces, the moving phase begins. Slide one piece per turn to an adjacent empty point along the lines.
5. If you break a mill by moving a piece out and then move it back on a later turn to reform the same mill, you capture again. This is called shuttling.
6. When a player drops to 3 pieces, they enter the flying phase and can jump to any empty point instead of moving to an adjacent one.

• Each player places 9 pieces on empty intersection points during the placing phase.
• A mill is three of your pieces in a straight row along a board line. There are 16 possible mills.
• Forming a mill lets you remove one opponent piece. You cannot remove a piece in an opponent's mill unless every opponent piece is in a mill.
• In the moving phase, pieces slide to adjacent connected empty points only.
• A player with exactly 3 pieces left enters the flying phase and can move to any empty point.
• You win by reducing your opponent to 2 pieces or by blocking all their legal moves.
• The game is a draw if 50 moves pass without any mill forming, or if both players have 3 pieces and 10 moves pass without a mill.

• Control intersections with 4 connections (points 4, 10, 13, and 19). These midpoints on the middle square give you the most mobility and the most mill opportunities.
• Set up double threats during the placing phase. Place pieces so that your next placement can complete a mill in two different directions. Your opponent can only block one.
• Avoid filling all three points of a mill early in the placing phase. You lose the ability to shuttle that mill later, which means fewer capture opportunities in the moving phase.
• Keep your pieces connected. Isolated pieces in the moving phase have fewer escape routes and get trapped faster.
• Count your opponent's remaining pieces. When they drop to 4 pieces, one capture puts them in the flying phase. Plan your mill captures to minimize the damage flying pieces can do.
• In the flying phase, jump to points that create immediate mill threats. With only 3 pieces, every move should either form a mill or threaten one.

• Twelve Men's Morris: Each player has 12 pieces instead of 9. The board adds 4 diagonal lines connecting the midpoints of the squares, creating new mill possibilities along the diagonals.
• Three Men's Morris: A simpler version played on a smaller board. Each player has 3 pieces and the goal is to form a mill of 3. Games are fast and tactical.
• Six Men's Morris: Played on a board with 16 intersection points and no inner square. Each player has 6 pieces. A good intermediate version between Three and Nine Men's Morris.

• The three-phase structure keeps the game dynamic. Placing, moving, and flying each require different thinking.
• Games last 10 to 30 minutes, fitting into a lunch break or a quiet evening.
• The shuttling mechanic rewards long-term planning over short-term captures.
• The rules take 5 minutes to learn but the strategy depth rivals Chess.
• It is one of the oldest board games still played today, with a 3,500 year history.

Play Nine Men's Morris directly in your browser. No downloads, no registration. Choose between an AI opponent with Easy, Medium, or Hard difficulty, or play local two-player mode on the same device. The board highlights valid moves, mill formations glow, and captured pieces animate. Works on desktop, tablet, and phone.

Nine Men's Morris rewards players who think ahead. The placing phase sets up your mills, the moving phase executes your captures, and the flying phase tests your adaptability. Pick a difficulty, place your first piece, and start building mills today.

• Gasser, R. (1993) - Solving Nine Men's Morris, University of Alberta
• Board games and cognitive development in children - Cognition (2018)