NRICH: Two Stones
This game is known as Pong hau k’i in China and Ou-moul-ko-no in Korea.
Age 5 to 18
A game for two players.

Resources:
A game board like the one above.
Each player needs two distinctive pieces such as two pebbles.
To play:
Place the two pebbles at the top and two at the bottom as shown below .


Take turns to slide one pebble along a line to an empty spot.
The first move will be to the middle.
To win: block your opponent so that they cannot move.
Next time you play swap start positions on the board with your opponent.
Printable NRICH Roadshow resource.
NRICH provides thousands of free online mathematics resources for ages 3 to 18, covering all stages of early years, primary and secondary school education – completely free and available to all.
Here are a collection of games from around the world to try during the holidays or the last few weeks of term.
What are you looking for?
Organization
Website URL
Type of Resource
Tutorial
Assigned Categories
Resource k12
This game is known as Pong hau k’i in China and Ou-moul-ko-no in Korea.
Age 5 to 18
A game for two players.

Resources:
A game board like the one above.
Each player needs two distinctive pieces such as two pebbles.
To play:
Place the two pebbles at the top and two at the bottom as shown below .


Take turns to slide one pebble along a line to an empty spot.
The first move will be to the middle.
To win: block your opponent so that they cannot move.
Next time you play swap start positions on the board with your opponent.
Printable NRICH Roadshow resource.
NRICH provides thousands of free online mathematics resources for ages 3 to 18, covering all stages of early years, primary and secondary school education – completely free and available to all.
Here are a collection of games from around the world to try during the holidays or the last few weeks of term.
What are you looking for?
Organization
Website URL
Type of Resource
Tutorial
