Engine thinking…
Black to move
Black 2 • White 2

How to play Reversi

Place a disc to flank one or more opposing discs in a straight line. Every trapped disc flips to your color.

  1. 1

    Choose a legal square

    Highlighted circles mark moves that capture at least one line of discs. If you have no legal move you must pass.

  2. 2

    Flip outward

    Every straight line trapped between your new disc and an existing disc turns to your color—horizontal, vertical, or diagonal.

  3. 3

    Lock in stable discs

    Corners and edges that cannot be flipped anchor your lead. Trade early flips for long-term stability.

Quick tips

  • Open in the center to keep mobility; early edge moves usually hand corners to your opponent.
  • Watch for 'X' and 'C' squares near corners—play them only when they flip safely into a corner.
  • When neither side has moves, the player with more discs wins; tempo and parity decide the final turns.
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