Solve a random Easy, Medium, Hard Japanese logic puzzle chosen from today's collection. Note: If the puzzle doesn't look as it should try using 'Compatibility Mode'.
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Objective / Rules - You have to light up every square in the grid. - A number in a square indicates how many bulbs share an edge (not diagonally) with that square. - A square is lit if it's in the same row or column as a bulb, as long as there are no black blocks between them. - No bulb may light another bulb.
Mouse Usage Left-click = bulb >> none. Right-click = X >> none. Clicking a clue square will 'tick' it.
Checking If you click 'Check' the system will check for incorrect squares. If 'Show mistakes when checking' is checked they will be marked in red.
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. If you still think you've found another solution, then please email us and we'll try to help.
JavaScript This game requires JavaScript to be enabled, with the ability to change the default right click action.
Help Read the help/walkthrough page on Light Up for a more detailed explanation and a walkthrough.
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