Start hard puzzles
Begin with the longest row and column clues. Count possible placements from both ends, fill overlap cells, and mark blanks around completed runs.
Nonogram Techniques for Online Picross Puzzles
Learn the core nonogram and picross techniques: complete forced lines, mark obvious blanks, scan overlaps, and start harder puzzles from certain deductions instead of guessing. Then practice them on the free nonogram board.
Beginner
Intermediate
Avoid guesses
A good nonogram solve advances through certainty. If no row has a safe fill, switch to crossing columns and look for blank marks that narrow the line.
Practice online
Open a free online nonogram, apply one technique at a time, and use Check after a deliberate sequence to confirm the board is still consistent.
Nonogram technique FAQ
- What is the best nonogram technique for beginners?
- Start with line completion. Look for rows or columns where the clue numbers plus required gaps fill the available space, then fill the cells that are forced.
- How do I start a hard nonogram?
- Scan for the longest clues first, use overlap scanning to find guaranteed filled cells, and mark blanks around completed groups before moving to crossing lines.
- Should I guess in a nonogram?
- Guessing should be a last resort. Good nonogram solving comes from certain fills, certain blanks, and revisiting each row and column after every confirmed move.