Place a stone on an empty square where it traps at least one opposing stone in a straight line horizontally, vertically or diagonally. Every trapped stone flips to your color. The game starts with the standard four stones in the center.

Yes. Choose Vs Computer to play Black and move first while the computer plays White. The computer uses a shallow minimax search with piece-count scoring, so this mode is designed for a casual match rather than advanced competitive training.

Yes. Choose Two Players and take turns placing Black and White stones on the same board. The current turn and both stone counts stay visible, and Reset starts a new game at any time.

The turn passes automatically if the other player still has a legal move. You do not need to press a pass button. If neither player can move, the game ends and the final stone counts decide the winner.

The game ends when neither Black nor White has a legal move. The player with more stones on the board wins; equal counts produce a draw. The live score above the board shows both counts throughout the game.