How to Solve a Nonogram — Step-by-Step Tutorial
Nonograms (also known as picross, griddlers, hanjie, or paint-by-numbers logic puzzles) use number clues along rows and columns to tell you which cells to fill in. Use logic — no guessing required — to paint the correct pattern and reveal a hidden image.
- Read the clues. Each number tells you how many consecutive filled cells appear in that line. Multiple numbers mean multiple groups separated by at least one empty cell.
- Start with the biggest clues. They give you the most information and are easiest to solve first.
- Use the overlap technique. When a clue is large relative to the row length, some cells must be filled regardless of where the group starts.
- Cross-reference rows and columns. Information from one direction often resolves ambiguity in the other.
- Mark empty cells with dots. This narrows down where groups can go and prevents mistakes.
- Work from what you know. Each cell you solve makes the next one easier. Progress compounds.
- Complete the grid to reveal a piece of the hidden pixel art. Solve all pieces to restore the full masterpiece.
Nonogram Mosaic includes an interactive tutorial with a guided 5×5 puzzle to help beginners learn these techniques step by step.
What is a Nonogram?
A nonogram is a grid-based logic puzzle where number clues determine which cells to fill in, revealing a hidden picture. Invented independently by Non Ishida and Tetsuya Nishio in Japan in 1987, nonograms are now one of the most popular logic puzzles worldwide. They are also known as picross (Nintendo's trademarked name), griddlers, hanjie, and paint by numbers.
Nonogram Tips for Beginners
- Start with the largest numbers — rows or columns with big clues are the easiest to solve.
- Look for complete rows where clues add up to the row length.
- Never guess — a well-designed nonogram is always solvable with pure logic.
- Use dot marking to track empty cells and narrow possibilities.
Frequently Asked Questions
What is the difference between a nonogram and picross? They are the same puzzle. "Nonogram" is the most common name, while "Picross" is Nintendo's trademark.
Are nonograms good for your brain? Yes — they exercise logical reasoning, pattern recognition, and spatial thinking.
Can I play on my phone? Yes. Nonogram Mosaic works on any device with a browser and can be added to your home screen.
How is Nonogram Mosaic different? Each puzzle piece reveals part of a larger pixel art image, creating an art restoration experience.
Nonogram Mosaic is free, works on any device, and requires no download. Play instantly in your browser.