Connect Four vs AI
Connect Four vs AI is a free online tool that lets you drop discs into a classic 7×6 grid and try to line up four in a row before a minimax computer opponent does. Pick Easy, Medium or Hard, choose who opens, or hand the device to a friend for local 2-player — winning lines light up, moves undo cleanly, and your lifetime record is kept between visits.
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You · amber
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Draws
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AI · ivory
ROUND 1
Your move — you're amber.
Opponent
Mode
Starts
Easy sees one move ahead and misfires often — a good warm-up. Medium looks three moves deep with an occasional lapse in concentration. Hard searches five moves deep with minimax and alpha-beta pruning, always takes a win and always blocks yours. In 2-player mode the same board becomes a pass-and-play piece for game night.