🔴 Connect Four
Drop discs and line up four before the AI does.
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How to Play Connect Four
- Click a column to drop your disc — it falls to the lowest empty slot.
- You and the AI alternate turns.
- Connect four of your discs in a row — horizontally, vertically or diagonally — to win.
- If the board fills with no line of four, it's a draw.
Tips & Strategy
- Control the centre column — it participates in the most possible lines of four.
- Build 'double threats': two ways to win that can't both be blocked.
- Mind the parity: a threat is only real if the right turn order delivers that square to you.
Connect Four — Frequently Asked Questions
How strong is the computer opponent?
The AI searches several moves ahead with minimax. Easy levels make occasional mistakes; the hard level punishes careless play immediately.
Is going first an advantage in Connect Four?
Yes — with perfect play the first player can force a win by starting in the centre column, which is why centre control matters so much.
Why did I lose when I had a winning spot?
Probably parity: the winning square existed, but the turn order meant your opponent reached their threat first. Counting moves is part of the strategy.