Reversi
StrategyFree to playFlip opponent discs to own the board at the end.
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How to Play
Reversi is the disc-flipping strategy classic. Place a disc so it brackets a line of your opponent's, and every captured disc flips to your colour. The game ends when the board is full or neither side can move, and the most discs wins. Play the CPU or a friend on the same screen. The opening is the standard four discs in the middle of an 8x8 board, with you as black and moving first.
Controls
- Place - Tap / click a legal square
- Pass - Automatic when no move exists
- New game - Button resets the board
Tips & Tricks
- 1A corner can never be flipped, and the hard CPU prices one at +5 — more than any flip count buys — so give up discs to reach an edge you can build from.
- 2Medium takes whichever move flips the most discs, every time, so it will hand you a corner to win a line today; offer it the fat line and keep the corner.
- 3Mobility is the real currency above medium: a move scores your flips minus 0.6 for each reply it leaves the CPU, so strangling its options beats counting discs.
- 4Four starting discs leaves 60 playable squares, so the last few moves decide most games — a big lead on move thirty is not a result.
Frequently Asked Questions
What do the three difficulties change?
Easy picks a legal move at random. Medium always takes the move that flips the most discs. Hard looks one move ahead and scores each option as your flips minus 0.6 per move it leaves you, with +5 for a corner — which is why it plays for position rather than for the current count.
Who moves first?
You do, as black, from the standard four-disc opening in the centre of the 8x8 board. The CPU plays white.
Can I play on my phone?
Yes — placing a disc is one tap on a square. Only squares where a flip is legal will respond, so a mis-tap on an empty square costs nothing.
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