This game is known as Pong hau k'i in China and Ou-moul-ko-no in Korea. Find a friend to play or try the interactive version online.
Stage: 1 Challenge Level:
This is a game for you to play against a friend.
You must take it in turns to place a domino on the grid so that each domino covers two squares. One of you is only allowed to place your dominoes horizontally and the other must place dominoes vertically.
The winner is the person who manages to make it impossible for his/her opponent to play.
The interactivity is set up with blue horizontal dominoes and green vertical dominoes.
Play the game a few times.
Can you work out which player will win? What is the winning strategy? What might be winning moves?
You could change the grid shape and/or size. How does this affect the strategy?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities
can be found here.