Nonogram Picture Logic
How to Play: Look at the number clues on the side and top of the grid. They tell you how many consecutive cells to color. Fill the correct cells to reveal a hidden picture!
Key Features:
- Data-free puzzle solving anywhere.
- Travel-friendly, calming pixel art logic.
- Lightweight app design saves battery.
About Nonogram / Picross
Nonograms (also called Picross, Griddlers, or Hanjie) were independently invented in 1987 by Non Ishida in Japan and James Dalgety in the UK. Non Ishida's TV-guide puzzle gained global popularity, and today millions of enthusiasts solve Nonograms daily — from simple 5×5 beginner grids to sprawling 25×25 expert challenges.
How to Play
- Examine the number clues along the top and left of the grid. Each number indicates a consecutive block of filled cells in that row or column.
- Tap or click cells to fill them, and right-click (or long-press) to mark a cell as empty (X).
- Use logic to determine which cells must be filled or empty based on the clue numbers and known cells.
- Fill all the correct cells to reveal the hidden pixel-art image and complete the puzzle.
Tips & Tricks
- Start with large clues: Rows or columns with a single large number that exceeds half the grid width always have guaranteed filled cells in the middle.
- Cross-reference everything: Every filled or empty cell you determine in a row immediately constrains the corresponding column — always check both directions.
Frequently Asked Questions
Do Nonograms require guessing?
Well-formed Nonograms never require guessing — every puzzle is solvable through pure logic. If you feel stuck, look for a row or column you haven't fully explored yet.
What does the hidden picture show?
Each completed Nonogram reveals a unique pixel-art illustration. The image becomes clear as you fill in the correct cells — solving the logic puzzle is how you "paint" the picture.
Is Nonogram free to play?
Yes — completely free to play in your browser with no download required. It also runs fully offline after the initial page load.