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Kỳ Viện

Black moves first on an 8×8 board containing four centre discs.

Bracket and flip

Place a disc to bracket one or more opponent discs between it and a friendly disc along a straight line. Every bracketed line flips at once. A placement without a capture is illegal.

Pass and count

Pass only when no placement is legal. The game ends when neither player can place, even with empty squares remaining. The larger disc count wins.

World Othello Federation

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