onlinegamesbrowser.comHow to play
The 8 by 8 board opens with four discs in the center, two of each color set diagonally. Black always goes first. Every move has to capture: you place a disc so that one or more straight lines of enemy discs end up boxed in between it and a disc you already have, and all of those discs flip over to your color.
- Under Play, choose Vs computer or 2 players, and set the Level for the computer: Easy, Medium or Hard.
- Dots show each legal square for whoever's turn it is. Tap one.
- One placement can capture along several directions together, and every trapped disc flips.
- No legal move? Your turn is skipped and the other side plays again.
- When neither player has a move left, the game ends and the bigger disc count takes it.
Controls
- Touch or mouse: tap or click a square that shows a dot.
- Keyboard: use the arrow keys to reach a square, then Enter.
- Against the computer, you swap colors from game to game, since black always opens.
- The score of every game stays on screen until you leave the page.
Tips
- Corners are gold. A disc there can never be flipped, and it makes nearby edge discs safe too.
- Avoid the squares touching an empty corner, the diagonal one most of all, since they often gift the corner to your opponent.
- Early on, more discs isn't better. Keeping your options open, with fewer discs, often leaves the other side short of good moves.
- Stay compact in the middle so your opponent has few places to play.
- The final moves flip lots of discs, so a lead can vanish at the very end. Count before you relax.
FAQ
How strong is the Hard computer?
It searches several moves ahead, prizes corners and edges, and keeps track of how many moves each side has available. In the endgame it calculates all the way to the last move. Medium thinks 3 moves ahead, and Easy picks at random about half the time.
Why do corners matter so much?
Nothing can trap a corner disc, so it stays yours for good, and it anchors the edges beside it. That's also why playing beside an empty corner is a gamble: it can give that corner away.
Can two of us play on one screen?
Sure. Pick 2 players and the two colors alternate on a single phone or computer, with dots marking the legal squares for whoever is up.
Can I play reversi at school?
Reversi runs in an ordinary browser tab with nothing to install, so a school Chromebook can play it. Whether the page opens on a school network is the school's call, and if it is blocked there, only the IT team can change that.
