How to play
2 players. The board stands upright: seven columns of six holes.
- In turn, each player drops a disc into a column that is not full. It falls to the lowest empty hole.
- The first to line up four of their discs wins: across, up and down, or diagonally.
- If the board fills up with no line of four, it is a draw.
- With a time limit per move, a player who runs out of time loses.
