Achi & Two Stones

This week during maths room 4 learnt how to play two maths games from around the world. The first game we learnt to play was 'Two Stones' in China this game is known as Pon hau k'i and in Korea it is called Ou-moul-ko-no.

To play the game you need a game board like the one above and each player (2 people) needs two distinctive counters. To begin you place two counters at the top and two at the bottom as shown below.

You then take turns to slide one counter along a line to an empty spot. The first move is to the middle. To win the game you must block your opponent so that they cannot move.

Some people played each other using a game board and counters while others played against the computer at the web address below.

TWO STONES

The other game we learnt to play was called 'Achi', which is a game that originates from Ghana. To play this game you need four counters each and a copy of the game board below.

To start the game you and your partner take turns to place a counter on an empty circle. You keep going until all the counters are on the board. Then you take turns to slide one of your counters along a line to an empty circle.

The winner is the first person to get three counters in a straight line. Room 4 had a Achi Championship and the winner on the day was Vincent!

Both games were sourced from nrich.com