Four In A Row

About Four in a Row

Four in a Row is the classic connection strategy game, known in physical form as Connect Four, reproduced faithfully in browser format. Two players alternate dropping coloured discs into a seven-column, six-row grid, aiming to be the first to line up four of their colour — horizontally, vertically, or diagonally. The first player to achieve four in a row wins; if the board fills without a four-in-a-row, the game is a draw.

The game includes single-player mode against AI opponents at multiple difficulty levels alongside two-player on a single screen. The hardest AI difficulty applies minimax search with look-ahead, meaning it plays close to optimally and will punish the classic beginner error of focusing on offence while missing a defensive block.

Strategic Foundations

The centre column is the most valuable position — a disc placed in column four can contribute to horizontal, vertical, and both diagonal winning lines, which is more than any edge column. Control the centre and you force your opponent into more constrained responses. The most reliable tactical pattern is setting up a double threat — two simultaneous winning moves that your opponent cannot block both of simultaneously. Getting to a double threat requires planning three to four moves ahead rather than responding to the board as it stands.