2 players
How to play
Start at the center. The board opens with four discs. Black moves first.
Bracket an opponent. Place a disc that traps at least one opposing disc between your new disc and another of your discs.
Flip every line. All bracketed horizontal, vertical, and diagonal lines turn your color.
Pass when blocked. If you have no legal placement, play passes automatically.
Count the discs. When neither player can move, the player with more discs wins. Equal counts are a draw.
Invite friends with a room code, or connect your own AI.