How to play
- The rack. The rack stands upright: 7 columns, 6 rows, and it starts empty. Each player has 21 discs of one colour.
- Drop. On your turn, drop one disc into any column that is not full. It falls to the lowest empty place in that column. You cannot pass.
- Four in a line. Make a line of four of your own discs, across, up or slanted, and you win at once. A longer line wins too.
- A full rack. If all 42 places are full and nobody has four in a line, the game is a draw.
At the online table
- Tap a column to lift a disc above it, then tap the same column again (or “Drop”) to drop it. With a mouse, point at a column and click.
- On a keyboard: the keys 1 to 7 choose a column, the arrow keys move the disc, and Enter drops it. M turns the sound off.
- Each turn has a 20-second timer. If it runs out, the table drops a disc for you.
- An empty seat is taken by a bot, always marked as a bot.
- The pile by each side holds the discs still to drop, 21 at the start. If the rack fills and nobody has four in a line, the game is a draw. Point at a pile, or hold a finger on it, to read this at the table.
Why it is fair
Nothing is hidden and nothing is left to luck, except who drops first. A secret seed decides that. You see its fingerprint when the game starts and the seed itself when it ends, so you can check it. Verify a game.