It typically consists of a 5×5 grid with 25 squares, each containing a unique number, except for the center square, which is usually marked as a “free” space. Players mark off numbers as they are called, and the objective is to complete a predetermined pattern such as a line, row, or diagonal.
Card Example
For example, if the pattern is a straight line, the player wins by marking off five numbers in a row either horizontally, vertically, or diagonally.