Click a column to drop your disc. First to connect four in a row — across, down or diagonally — wins.
How to play Connect Four
Discs fall to the lowest empty spot in the column you pick, and players alternate turns. Win by making a line of four before your opponent — and remember you must also block their threats. Classic tips: take the center column early (it belongs to the most possible lines), build “double threats” that can't both be blocked, and watch for diagonal lines, which are the easiest to miss. Easy plays randomly, Medium blocks and attacks a few moves deep, and Hard looks far enough ahead to punish most mistakes.
The center column. Connect Four is mathematically solved: with perfect play, the first player wins by starting in the center, draws from the columns next to it, and actually loses by starting anywhere else. The center passes through the most possible four-in-a-row lines.
How strong is the Hard computer?
Hard searches several moves ahead with a minimax algorithm, so it blocks direct threats, sets up its own lines and punishes most one-move mistakes. It is not unbeatable — build a double threat (two winning spots at once) and it can't block both.
Can two people play on one device?
Yes — switch Mode to “2 players” and take turns tapping columns on the same screen: red goes first, then yellow. It works great on a phone or tablet placed between you.
How big is a Connect Four board?
The standard board is 7 columns wide and 6 rows tall, holding 42 discs in total — the size this game uses. That geometry matters: an odd number of columns gives the single centre column its special power, and 7×6 is the layout that has been analysed most deeply by mathematicians.
What is the odd and even row strategy?
Advanced players count rows from the bottom and plan threats by parity: the first player (red) wants a winning threat waiting on an odd row (1, 3, 5), while the second player wants one on an even row. As the board fills up, those threats tend to come due on exactly the right turn.
Can Connect Four end in a draw?
Yes. If all 42 cells fill up without either player making four in a row, the game is a draw. It is rare in casual play because the 7×6 board offers 69 possible winning lines, but careful defensive play from both sides can get there.