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Reversi is a classic two-player board game that is easy to learn but offers deep strategic play. Using an 8×8 grid and disks that are dark on one side and light on the other, players compete to control the board by the end of the game. The objective is simple: finish with more disks of your color showing than your opponent.

1. Game Setup

• The board is an 8×8 grid, similar to a chessboard.
• Each player chooses a color — dark or light.
• This guide uses the common Othello-style fixed opening: black on d5/e4 and white on d4/e5. Dark (black) moves first. Some older Reversi variants use different opening arrangements, so agree on the ruleset before play.

2. Rules of Play

Players take turns placing one disk of their color on an empty square. Each move must result in at least one capture.

A capture occurs when the newly placed disk, together with another disk of the same color already on the board, flanks an unbroken line of one or more of the opponent’s disks, with no empty square or intervening friendly disk, in a straight line — horizontally, vertically, or diagonally. All of the opponent’s pieces trapped in that line are flipped to the player’s color.

If a placement captures disks in multiple directions, all of them are flipped at once.

3. Passing and Game End

If a player cannot make a legal move, they must pass; a player with a legal move may not choose to pass. Play continues until neither player can move, which usually happens when the board is completely filled. The winner is the player with the most disks showing their color at the end; equal counts are a draw.

4. Key Strategies

• Corners are critical: Once you control a corner, it can never be flipped, and it often secures the adjoining edges.
• Edges need judgment: An edge disc is not automatically stable. Consider the whole position, access to corners and both players’ available moves before taking an edge.
• Avoid overflipping: Taking too many pieces at once may give your opponent access to stronger moves. Sometimes fewer flips are smarter.
• Plan ahead: Reversi is a game of momentum. The last few turns can swing the outcome dramatically — think beyond the immediate move.

5. Conclusion

Reversi combines simple mechanics with deep strategy. The rules are straightforward — place a disk, flip your opponent’s pieces, and aim to hold the majority by the end — but mastery comes from patience, foresight, and control of key positions.

Its mix of simplicity and depth has kept Reversi popular for more than a century, and every match is a reminder that even a single move can shift the balance of power across the board.