Make the game board
Using chalk, make a 5x6 square triangle as a game board. If you are on a beach or other suitable surface this can be drawn on the ground with a stick.
Find some counters
You can play alone or as a team. Each side needs 12 counters. In the photos the class used wood cookies and noggins. Stones, shells or other gathered counters can be used. So find and gather your counters from materials lying around outside. Make sure each side has recognizably different counters.
This is an example of an "illegal" game board as there are more than three counters in a row on both sides. It may take a while to get the hang of the game
How to play
1. If you are playing just one other person, take turns to place a counter anywhere on the game board until all counters have been put there. Whilst this is happening neither player can remove each other’s counters. Neither side can have more than three counters in a row at any one time. This is illegal!
2. Take turns to move a counter into an adjacent empty square. The counters cannot be moved diagonally but can be moved up, down or sideways. The aim is to make three counters sit in a row (but not a diagonal one).
3. When a player manages to make three counters in a row, they can remove one of their opponent’s counters. A player can only remove one counter from their opponent in any one go, even if more than one row of three counters is created in a move.
4. The game is over when a player is unable to make three in a row with his or her counters. Their opponent wins when this happens.