Connect Four: Drop, Block, and Line Up Four
Connect Four is a race to four in a row, and every disc you drop is both an attack and a defence. Watch the middle columns: they make the most lines.
What is the Connect Four Game?
Enter column numbers from 1 to 7, separated by commas. Players take turns dropping discs, which fall to the lowest empty row in the chosen column. The first player to line up four discs horizontally, vertically, or diagonally wins. In the browser, column buttons below the result let you keep playing.
How to use it
- Enter column numbers from 1 to 7, separated by commas.
- Click Play Moves to see the board.
- In the browser, use the column buttons to keep dropping discs.
Worked example
The moves 4, 4, 5, 5, 6, 6, 7 give Player 1 four discs in a row along the bottom row, columns 4 to 7, so Player 1 wins.
How do discs fall in Connect Four?
A disc drops to the lowest empty row in the column you choose. You cannot place a disc floating in mid-air.
Frequently asked questions
How many in a row wins?
Four, in any direction: across, down, or diagonally.
What is the best opening move?
The centre column is strong, because it belongs to the most possible four-in-a-row lines.