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Reversi

Sandwich the computer's stones to flip them. Have more stones when the board fills to win!

Place a black stone on a dotted square · Your turn is skipped if you have no moves

A strategy board game: trap your opponent’s discs between yours to flip them. Have more discs when the board fills up to win.

Place a black disc on a dotted square.
Every white disc trapped in a straight line between your new disc and another of yours flips.
If you have no legal move, your turn passes automatically.
Choose Easy, Normal or Hard.

Corners can never be flipped. They are the most valuable squares.
Avoid squares next to corners (especially diagonal ones); they hand corners away.
Early on, limiting your opponent’s moves beats flipping lots of discs.