Four in a row is a two-player game in which one player first chooses the color of the chips, and then everyone moves in turn, placing the elements in the cells of the vertical board.
The goal of the game is to place four pieces in a row of their color horizontally, vertically or diagonally before the opponent .
There are variants of the game with a field of different sizes, with chips in the form of discs or balls. The most common variant, also called classic, is 7x6, as well as 8x7, 9x7 and 10x7.