Read the number clues along each row and column, fill the grid, and reveal a hidden picture in this neon nonogram (picross) puzzler. Eight hand-crafted boards run from a 5x5 heart to a 7-wide tree.
About Picross Logic
Picross Logic is pure deduction. No luck, no guessing once you've read the clues right. Every number along a row or column tells you the length of an unbroken run of filled cells, in order, with at least one gap between runs. Cross-reference the rows against the columns, mark the cells you know are empty, and a little picture quietly emerges, a heart, an anchor, a sailboat, eight in all. It's calm and slightly addictive in the best way: each correct line locks in and turns green, so you always know you're on the right track. The grid is drawn entirely with code, which means there's no artwork to load and nothing phones home, and it runs fully offline. Tap or drag to fill, flip the little corner switch to mark empty cells, and on desktop right-click is the opposite brush. Open-source nonogram engine by Zhou Qi (HandsomeOne), used under the MIT license.
Where Picross Logic comes from
Nonograms were invented twice in Japan in 1987: the graphics editor Non Ishida won a Tokyo competition with pictures made from lit skyscraper windows, and the professional puzzler Tetsuya Nishio arrived at the same idea independently. The British puzzle collector James Dalgety coined the name 'nonogram' from Ishida's name when he brought the puzzles to Britain, and Nintendo trademarked 'Picross' (picture crossword) for Mario's Picross on the Game Boy in 1995. Deciding whether a nonogram has a solution is NP-complete; Picross Logic is an open-source browser take on the concept, not a Nintendo product. Source.
Inside Picross Logic: what we checked
The numbers below come from Picross Logic's own source code, and the screenshots are from our own test run of the game (20 October 2026).
- There are 8 pictures, played in a fixed order: Heart, Arrow, Diamond and House on 5 × 5 grids, Anchor on 6 rows by 5 columns, Smiley on 6 × 6, and Tree and Boat on 6 rows by 7 columns.
- The game does not keep a hidden answer picture. It marks the puzzle solved as soon as every row and every column matches its clue, so any grid that satisfies all the clues counts.
- A clue turns green as soon as the filled runs in its row or column match it, and turns grey again if you break it. Individual wrong cells are never flagged, and there is no timer, score or mistake counter.
- Dragging paints along a single row or column: the direction locks to whichever way you start moving. The corner switch changes between Fill and X (a cell marked as definitely empty), and on desktop a right-click uses the opposite brush.
- Reset clears the puzzle you are on. Nothing is saved: reloading the page takes you back to puzzle 1.
Unblocked Chromebook No Download Mobile For Kids Classic
How to play Picross Logic
Each row and column carries number clues. Take a clue like "5 3 1": read that line left-to-right (or top-to-bottom) and it contains a run of 5 filled cells, then a gap, then 3 filled, a gap, then 1 filled. Use the clues from both directions together to work out exactly which cells must be filled and which must stay empty. Fill every correct cell and a hidden picture appears, completing the puzzle. There are eight boards in all, and solving one takes you to the next.
Controls
Tap or click a cell to fill it; tap-and-drag to fill a straight line of cells. Use the small two-square switch in the bottom-right corner of the board to toggle your brush between Fill and X (mark-as-empty). On desktop, right-click paints with the opposite brush. Reset clears the current board.
Tips & tricks
- Start with the biggest clue in a line, if a run is large enough it must overlap the middle cells no matter where it sits, so fill those in first.
- Mark cells you have proven empty with an X; ruling cells out is just as powerful as filling them in.
- When a row's clues already add up (numbers plus the required single-cell gaps) to the full width, the whole line is forced, fill it instantly.
- Bounce between rows and columns, a cell you just filled in one row often unlocks a column clue, which unlocks another row.
Frequently asked questions
Does Picross Logic save my progress?
No. Picross Logic does not save anything between visits — every session starts fresh, and nothing is stored on your device or uploaded anywhere.
Is Picross Logic unblocked at school or work?
Picross Logic is a plain web page of about 44303 KB — no plugin, no installer, no app store — so it loads on a Chromebook or a locked-down school or office laptop the same way any other page does, and the whole game arrives in one short download. Whether it opens comes down to your network's filter rather than the game itself.
Who made Picross Logic?
Picross Logic is a free browser edition of a well-known classic, rebuilt with modern web technology so it runs anywhere.