Guide
Reversi starts with four discs in the center of an 8-by-8 board. Black moves first.
On your turn, place a disc on an empty square that traps at least one opposing disc in a straight line. The line can run horizontally, vertically, or diagonally. Any trapped discs flip to your color.
Rules
- A legal move must flip at least one opposing disc.
- Empty squares break a line. You only flip an unbroken line of opponent discs.
- A single move can flip discs in more than one direction.
- You cannot pass if you have a legal move.
- If you have no legal move, the app passes automatically.
- The game ends when the board is full or neither player can move.
- Whoever has more discs on the board at the end wins.
Strategy
Do not chase the largest flip in the opening. Early discs are easy to lose, and a big flip can leave you with fewer choices on the next turn.
Corners matter because they cannot be flipped. A move that gives your opponent a corner is usually expensive, even if it wins a few discs right now.
Mobility matters too. If your opponent only has one awkward move, you may be controlling the position.
- Be careful with squares next to empty corners.
- Prefer moves that leave your opponent fewer comfortable replies.
- Try not to spread your discs across too many empty neighboring squares early.
- Edges are safer after you own the corner beside them.
- Near the end, stop thinking generally and count the last moves.