Objective / Rules - Fill the grid with squares containing Blue(X) and White(O). - A 3-In-A-Row of the same colour/letter is not allowed. - Each row and column has an equal number of Blue(X) and White(O) squares.
Help Read the help/walkthrough page on 3-In-A-Row puzzles for a more detailed explanation and a walkthrough.
Mouse Usage Note: only when supported by your computer/device/browser/etc. Left-click = Blank >> Blue(X) >> White(O) >> Blank. Right-click = Blank >> White(O) >> Blue(X) >> Blank.
Checking If you click 'Check' the system will check for incorrect squares. If 'Show mistakes when checking' is checked they will be marked with a "!". If 'Show counts' is checked then the system will show the current count of Blue(X) and White(O) squares.
Uniqueness Each puzzle has exactly one solution, which can be found using logic alone and no guesses are ever required. If you think you've found another solution, then please double check the rules.