How to Play Nine Men’s Morris (Rules, Strategy & Setup Guide)

Nine Men's Morris is one of the oldest strategy board games in the world. It dates back to at least the Roman Empire, with boards carved into the stones of ancient temples and medieval cathedrals across Europe, the Middle East, and beyond. Known by many names (Mill, Merels, Merrills, Mühle, and even Cowboy Checkers), this two-player game of pure strategy has endured for centuries because it is deceptively simple to learn yet deeply satisfying to master.

Whether you picked up a beautiful wooden set, stumbled upon a board carved into an old church pew, or are just curious about a game that Shakespeare himself referenced in A Midsummer Night's Dream, this guide will walk you through everything you need to know to start playing.

What Is Nine Men's Morris?

Nine Men's Morris is a two-player abstract strategy game with zero luck involved. There are no dice, no cards, and no hidden information. Every decision is yours, making it a pure test of tactics and foresight.

The core concept is simple: players take turns placing and then moving pieces on a grid of 24 points, trying to form "mills" (three pieces in a row along a line). Every time you form a mill, you get to remove one of your opponent's pieces from the board. The first player to reduce their opponent to just two pieces, or to block all of their opponent's moves, wins the game.

What You Need to Play

All you need is a Nine Men's Morris board and 18 pieces total, which is 9 per player in two different colors (traditionally black and white). Many sets use round counters, stones, or wooden tokens. The board can be printed, carved, drawn on paper, or part of a beautifully crafted wooden game set.

Understanding the Board

The Nine Men's Morris board consists of three concentric squares connected by lines from the midpoint of each inner side to the midpoint of the corresponding outer side. This creates 24 intersection points where pieces can be placed. The corners of each square and the midpoints where lines connect are all valid positions.

Think of the board as three layers: the outer, middle, and inner squares. Lines connect the midpoints of each square's sides, creating pathways between the layers. Pieces move along these lines from one point to an adjacent point. Note that diagonal moves are not allowed — pieces can only travel along the drawn lines.

The Three Phases of Play

Nine Men's Morris unfolds in three distinct phases, each with its own feel and strategy. Understanding these phases is essential to playing well.

Phase 1: Placing Pieces

The game starts with an empty board. Players take turns placing one piece at a time onto any unoccupied point. The first player (traditionally White) places a piece, then the second player (Black) places one, alternating until all 18 pieces (9 per player) have been placed on the board.

Even during this placement phase, if you form a mill (three of your pieces in a row along a line), you immediately remove one of your opponent's pieces from the board. This means the placement phase is critically important — it's not just about getting pieces on the board but about setting yourself up for the movement phase while preventing your opponent from doing the same.

Phase 2: Moving Pieces

Once all 18 pieces are on the board, the game shifts to the movement phase. Players now take turns sliding one of their pieces along a line to an adjacent empty point. You cannot jump over another piece, and you cannot move diagonally — only along the lines drawn on the board.

The objective remains the same: form mills to capture your opponent's pieces. A common and powerful tactic in this phase is to "open" and "close" a mill repeatedly. You move a piece out of a completed mill on one turn, then move it back on a later turn, forming the mill again and capturing another piece each time.

Phase 3: Flying (Optional Rule)

When a player is reduced to just three pieces, some rule sets allow that player to "fly," meaning they can move a piece to any empty point on the board rather than only to adjacent points. This gives the weaker player a fighting chance and makes the endgame more dynamic.

The flying rule is widely used in casual play and many official rule sets, but it is not universal. It's worth agreeing on this rule before you start playing. If you don't use flying, the game simply continues with normal movement until a winner emerges.

Forming Mills & Capturing Pieces

A mill is three of your pieces lined up in a row along a single line on the board — either horizontally or vertically. Mills can only be formed along the lines drawn on the board, never diagonally. When you form a mill (during either the placement or movement phase), you immediately remove one of your opponent's pieces from the board.

There are a few important rules about capturing pieces:

Protected pieces: You cannot remove a piece that is currently part of an opponent's mill, unless your opponent has no other pieces available. In that case, you may remove any piece.

Permanent removal: Once a piece is captured, it is out of the game for good. It never comes back.

Re-forming mills: If you break a mill by moving one piece out, then move it back in on a later turn, that counts as forming a new mill and you get to capture again. This "opening and closing" technique is one of the most powerful tactics in the game.

How to Win

The game ends when one of two conditions is met:

Reduction: Your opponent is reduced to only two pieces. With fewer than three pieces, they can never form another mill, so they lose.

Blockade: Your opponent has no legal moves on their turn. If every one of their pieces is blocked and cannot slide to an adjacent empty point, they lose.

If both players are skilled and neither can force a win, the game can also end in an agreed draw. Nine Men's Morris is, in fact, a solved game — with perfect play from both sides, the game always results in a draw.

Strategy & Tips

Placement Phase Strategy

Prioritize midpoints over corners. The four midpoints on the middle square each connect to four neighboring positions, giving you maximum flexibility. Corner positions only connect to two neighbors, making your pieces less mobile in the movement phase.

Spread your pieces out. Beginners often cluster their pieces in one area trying to form an early mill. Experienced players distribute pieces across the board to create multiple threats and maintain flexibility.

Don't chase mills too early. Placing three pieces in an obvious row during the opening just invites your opponent to block you. Instead, focus on positioning pieces where they can contribute to multiple potential mills at once.

Movement Phase Strategy

Create a "double mill" (or shuttle). This is the single most powerful tactic in Nine Men's Morris. If you can position your pieces so that one piece can move back and forth between two mills, you'll capture a piece on every single turn. Setting up this configuration is often the path to victory.

Control the center. Pieces on the middle square's midpoints have the most connections and give you the greatest flexibility to form mills in multiple directions.

Block your opponent's mills. Always be aware of when your opponent is one move away from completing a mill. It's often worth sacrificing your own offensive momentum to prevent a capture.

Endgame Strategy

If you have the advantage, simplify. When you're ahead on pieces, focus on safe trades and steady captures rather than risky plays. Methodically reduce your opponent to two pieces.

If you're behind, play for the flying phase. If your rule set includes flying, getting down to three pieces isn't always a death sentence. The ability to jump anywhere on the board can create surprising comebacks if you play aggressively.

Popular Variations

Three Men's Morris

Played on a simple 3×3 grid with just three pieces per player. Essentially an ancient version of Tic-Tac-Toe, but after placing all pieces, players take turns sliding them to adjacent positions. A great introductory version for young children.

Six Men's Morris

Uses a board with only two concentric squares (instead of three) and six pieces per player. The smaller board makes for a faster, more constrained game with fewer options but the same core mechanics.

Twelve Men's Morris

Adds diagonal lines to the standard board, creating more intersection points and connections. Each player gets twelve pieces. The added complexity and larger piece count create a significantly deeper strategic game.

Morabaraba

The South African variation, which also adds diagonal lines and is widely played as a competitive sport in southern Africa. The rules are similar but with some regional differences in how captures and endgame conditions work.

A Brief History

Nine Men's Morris is one of the oldest known board games in the world. The oldest possible evidence is a board carved into the roofing slabs of an Egyptian temple at Kurna, which dates to around 1400 BCE, though the carving itself may have been made much later by visitors or workers.

What we know with more certainty is that the game was widely played throughout the Roman Empire. Boards have been found carved into stone across Roman ruins, carried by soldiers and merchants who spread the game across Europe, the Middle East, Africa, and Asia. 

The game reached peak popularity during the medieval period (roughly the 14th and 15th centuries), when it was considered at least as popular as chess. Boards have been discovered carved into the cloister seats of English cathedrals at Canterbury, Gloucester, Norwich, Salisbury, and Westminster Abbey, suggesting that even monks couldn't resist a quick game between prayers.

Shakespeare referenced the game in A Midsummer Night's Dream (Act II, Scene I), where Titania says, "The nine men's morris is filled up with mud" — referring to an outdoor board carved into a village green that had become overgrown with neglect.

The game has been reinvented many times throughout history. During World War I, it was sold in the UK as "Trencho." In 1950s America, it was marketed as "Cowboy Checkers." Today, it remains a beloved classic played worldwide, and it was mathematically solved in 1993, proving that with perfect play from both sides, the game always ends in a draw.

Where Did the Name "Nine Men's Morris Come From?

As for the name itself, "Nine" refers to the nine pieces each player uses, "Men" is an old English word for game pieces or counters, and "Morris" most likely derives from the Latin word merellus, meaning "gaming piece" — despite popular myths linking it to Morris dancing or Moorish origins. The game goes by many other names around the world, including Mill, Mühle, Merels, Merrills, and Morabaraba.

Frequently Asked Questions

Can you move diagonally in Nine Men's Morris?

No. In standard Nine Men's Morris, pieces can only move along the lines drawn on the board (horizontally and vertically between connected points). Some variations, like Twelve Men's Morris, add diagonal lines to the board.

What happens if all my opponent's pieces are in mills?

If you form a mill and every one of your opponent's remaining pieces is part of a mill, you are allowed to remove any one of their pieces. This is the only exception to the rule that you cannot capture a piece in a mill.

Can I form two mills at once?

Yes! If placing or moving a single piece creates two mills simultaneously, you still only get to remove one opponent's piece. But setting up double mills is a devastating strategy because it means you can capture on consecutive turns.

Is Nine Men's Morris a solved game?

Yes. In 1993, Ralph Gasser used computer analysis to prove that with perfect play from both sides, Nine Men's Morris always ends in a draw. However, in practice, even a single mistake can shift the advantage, making it a deeply rewarding game for human players.

What's the difference between Nine Men's Morris and Tic-Tac-Toe?

Three Men's Morris (the simplest version of the game) is essentially the ancestor of Tic-Tac-Toe. However, Nine Men's Morris is far more complex — it has a larger board, more pieces, a multi-phase structure, and a capturing mechanic that Tic-Tac-Toe lacks. Think of it as Tic-Tac-Toe's much more strategic big sibling.

What age is Nine Men's Morris appropriate for?

Most players can learn the rules from about age 6 and up. The game's simple mechanics make it easy to teach, while the strategic depth keeps adults engaged. It's an excellent family game.

Looking for more classic games? Browse our full board game collection including other ancient games like Ur and Senet.

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