Reversi

• Black moves first. Players take turns placing one disc of their colour.
• A move must outflank one or more of the opponent's discs: they must lie in a straight line (horizontal, vertical or diagonal) between the new disc and another disc of your colour.
• All outflanked discs are flipped to your colour.
• If you have no legal move, your turn is passed. The game ends when neither player can move.
• The player with the most discs at the end wins.

Online: send the game link to a friend and play in real time. Moves go directly between your browsers. Anyone else who opens the link can watch. If you close the tab, open the link again (or use Resume on the start page) to carry on.