Pong Hau K'i

Pong Hau K'i is a traditional board game for two players. In Korea, it is known as Ou-moul-ko-no.

The board consists of 5 vertices and 7 edges. Each player has two pieces. Players take turns to move. At each turn, the player moves one of his two pieces into the adjacent vacant vertex. If a player can't move, he loses.

Only one type of position can make a player lose. If both players play perfectly, the game ends after three consecutive moves.

It is used for childhood education generally.

Board:
O-----O
|\ /
| \ /
| O
| / \
|/ \
O-----O

Starting position:
2-----1
|\ /
| \ /
| O
| / \
|/ \
2-----1