No Four in a Row is played on a grid. Some cells of the grid contain 'X' and 'O'. The task is to fill in the grid so that four consecutive identical symbols never appear in any row, column or diagonal.
The task is to fill in the grid so that four consecutive identical symbols never appear in any row, column or diagonal.
Tip: Click the OX toggle button below or double-click the grid or switch the order of entering X or O first.