The game uses a 3x3 square board. 2 players take turns to play,
either placing a red on an empty square, or changing a red to
orange, or orange to green. The player who forms 3 of 1 colour in a
This game for two players comes from Ghana. However, stones that were marked for this game in the third century AD have been found near Hadrian's Wall in Northern England.
Some puzzles requiring no knowledge of knot theory, just a careful
inspection of the patterns. A glimpse of the classification of
knots and a little about prime knots, crossing numbers and knot
Here is a game for you to play with a friend. Try playing it a
Can you find any ways to help you win?
Do you think both players have got an equal chance of winning? If
not, why not?
The object of the game is for the red counter to get past the
four blue counters on the grid below.
How to play: