Connect Four: Classic Checker Game vs AI

Connect Four is a strategic game where two players take turns dropping colored checkers into vertical columns. The first to connect four checkers in a row — horizontally, vertically, or diagonally — wins.

How to Play

The board has 7 columns and 6 rows. Players take turns dropping a checker into any non-full column. The checker falls to the lowest free position. The first player to connect four checkers in any direction wins.

Strategy for Winning

• Control the center column — a checker there participates in more winning combinations
• Create "double threats": place checkers so you have two winning options at once
• Watch your opponent's moves: if they have three in a row, definitely block the fourth

AI: Three Difficulty Levels

• Easy: AI with search depth 2 — yields to inexperienced players
• Medium: depth 4 — notices obvious traps
• Hard: depth 6 with alpha-beta pruning — plays at the level of a strong amateur

Play Connect Four