Connect Four

You play Connect Four against an agent whose evaluator is re-evolved by a Genetic Algorithm (GA) every turn. This demo needs you: the agent never plays on its own, it only replies to your moves.

How it works

1. Click any empty cell in a column to drop your piece into that column.
2. Once your piece lands, the agent runs a short GA (from half a second on Easy to about six seconds on Hard) to evolve weights for a hand-designed evaluator (center control, 2- / 3-in-row counts for both sides, blocked threats).
3. The agent then picks the highest-scoring legal move with those weights and drops its piece. Its top three candidate moves and how much it valued each board feature appear in the right panel. When someone wins, the winning line lights up.
4. The cycle repeats until someone wins or the board fills up.

Controls

• You go first / Agent goes first. Pick who opens the next game.
• New game. Start over with a fresh board.

Yellow is player 1, red is player 2.