Nonogram

How to play

• Tap a cell to cycle: fill → × mark → empty (× is your own note for "definitely empty").
• Each clue lists the lengths of the filled runs in that row or column, in order, with at least one empty cell between runs.
• A clue dims when its line matches exactly; it turns red if the line holds too many fills.
• Every board is machine-verified solvable by pure line logic — the no-guessing complaint about random nonograms cannot happen here.

Also known as picture-logic or paint-by-numbers puzzles. Why most sites can't promise no-guessing: we measured it. Sister puzzles: Gridlings.

FAQ

How do you play Nonogram?

Fill cells so every row and column matches its clue — the ordered lengths of the filled runs, with at least one gap between runs. Tap to cycle fill, X-mark, empty; a clue dims when its line matches exactly.

Is there a new Nonogram puzzle every day?

Yes — a new daily board goes live at 00:00 UTC, the same board for every player worldwide, with streak tracking. Unlimited free play in three difficulties and a full archive of past dailies are also free, with no account and no ads.

Can Nonogram be solved without guessing?

Yes. Every published board is machine-verified before release: a solver proves exactly one solution exists and is reachable by logical deduction, so there is always a provable next step. Line-solvability is checked directly — see our measured data on guess-free nonograms.