Connect Four

How to play: you are red, the bot is gold. Take turns dropping a disc into any column that is not full — it falls to the lowest empty space. The first to line up four of their own discs in a row, across, down or diagonally, wins; a full board with no four is a draw. The first move alternates from game to game. Pick how hard the bot thinks with Easy, Medium or Hard — at every level it will take a win and block yours, so look two moves ahead.