How to Play Three Men's Morris

By Jaques of London · Est. 1795 · Updated 2026-08-17

Three Men's Morris is a two-player abstract strategy game played on a simple 3x3 grid of nine points connected by lines. Each player has three pieces, and the game splits neatly into two phases: placing pieces onto the board, then moving them one step at a time to form a line of three.

Its appeal lies in its speed and its depth. A game takes minutes, yet the interplay between blocking and attacking rewards genuine thought. It plays equally well on a kitchen table or a pub bench, requires no special equipment beyond a marked board and six pieces, and is a strong introduction to abstract strategy for children and adults alike.

A little history

Three Men's Morris is one of the oldest known board games. Boards that scholars believe are consistent with Morris-family games have been found carved into stone at sites across Egypt and the ancient Mediterranean world, though the precise origins of the game remain unclear and the exact dates are disputed. The game is documented in mediaeval Europe, and the Morris family of games, which includes Nine Men's Morris, appears in English literature and records from at least the 14th century. Three Men's Morris is traditionally regarded as the simplest member of that family.

Setting up

1. Place the board flat between the two players.
2. Give each player three pieces of their own colour.
3. Decide who goes first, by agreement or by any random method.
4. The board starts empty. No pieces are placed before play begins.

How to play

1. The game is played in two phases: the Placement Phase and the Movement Phase.
2. PLACEMENT PHASE: Players take turns placing one piece per turn onto any empty point on the board.
3. A player who completes a line of three during the Placement Phase wins immediately; the Movement Phase is not reached.
4. The Placement Phase ends once both players have placed all three of their pieces (six pieces on the board in total), provided no one has won yet.
5. MOVEMENT PHASE: Players take turns moving one of their own pieces along a marked line to an adjacent empty point. Pieces may not jump over occupied points.
6. Diagonal moves are permitted if the board has diagonal lines marked; on a standard Three Men's Morris board, diagonals connect the centre to all four corners, and the four edge mid-points connect across the board through the centre.
7. A player may not pass their turn; a legal move must be made if one exists.
8. If a player cannot move because all adjacent points are blocked, that player loses.
9. Play continues, alternating turns, until one player wins.

Winning and scoring

A player wins by forming a straight line of three of their own pieces along any marked line on the board: a row, a column, or a diagonal. The win can occur during either the Placement Phase or the Movement Phase. If a player is completely unable to move during the Movement Phase because every adjacent point is occupied, that player loses immediately.

The fine points

The most common dispute concerns diagonal moves. On a standard Three Men's Morris board all lines, including diagonals, are marked, and moves along any marked line to an adjacent point are legal. If you are playing on an improvised board, agree before the game starts whether diagonal movement is permitted, because it significantly affects strategy. The centre point connects to all eight surrounding points and is far more powerful with diagonals enabled.

A second edge case arises when a player questions whether a position is a draw. In strict play, Three Men's Morris can cycle: neither player is forced to break a defensive formation, and the same position may repeat. There is no universally codified repetition rule for this game. The practical standard ruling is to agree before play that three repetitions of the same board position constitute a draw. Some players prefer a move-count limit such as thirty moves without a win also resulting in a draw. Whichever rule you use, agree it before the game begins.

How to win more often

• Take the centre point on your first move if you go first. It connects to more lines than any other point and gives you the most attacking and defensive options throughout both phases.
• During placement, do not focus solely on building your own line. Actively block your opponent if they have two pieces on a line with the third point empty.
• Corners are the second most valuable points. A player holding the centre and two opposite corners has multiple simultaneous threats that are very difficult to answer.
• In the Movement Phase, create a fork: a position where you threaten to complete a line in two different directions at once. Your opponent can only block one.

Variations

No-Diagonal Three Men's Morris

In this version only horizontal and vertical lines are used for movement and winning. Diagonal connections are ignored entirely. The game becomes somewhat more constrained and tends to draw more frequently, making it slightly simpler for younger children but less tactically rich for experienced players.

Continuous Placement (No Movement Phase)

Some players, particularly with younger children, play the game as pure placement with no movement phase at all. Each player places their three pieces in turn, and the winner is the first to form a line during placement. If all six pieces are placed with no winner, the game is a draw. This is faster but removes most of the strategic depth.

Extended Three Men's Morris (Five Points in a Row)

Played on a larger grid, typically 5x5, with five pieces each and the goal of lining up three pieces. This gives both players more room to manoeuvre and prolongs the game considerably, making it better suited to players who find the standard game resolves too quickly.

Misere (Losing) Version

In the Misere variant, the player who forms a line of three loses the game rather than winning it. Both placement and movement strategy reverse completely: you must threaten your opponent into inadvertently completing a line, while avoiding making one yourself. This is a sharp and entertaining twist for players already comfortable with the standard rules.

Three Men's Morris: frequently asked questions