• O can fill two squares on their first turn
• 1 point for a line of 2
• 3 points for a line of 3
• 5 points for a line of 4
• 7 points for a line of 5

Scores are calculated by counting the lines at the end of the game. The scores below are current scores and can change at any time until the end.

In other words, a line of 3 that becomes a line of 4 on the final turn counts as a 4, not both a 3 and a 4.