Nonogram Solver
Enter the row and column clues from any nonogram puzzle and get the solution instantly.
How to Use the Solver
Set Grid Size
Enter the number of rows and columns in your puzzle.
Enter Clues
Type the row clues and column clues, one per line. Separate numbers within a clue with spaces.
Get Solution
Click "Solve" and the solver will instantly display the completed grid.
About the Nonogram Solver
Our nonogram solver uses constraint propagation to determine each cell in the grid. It works by iterating over every row and column, narrowing down which cells must be filled or empty based on the clues. This is the same logical approach used by expert human solvers — no brute-force guessing required.
The solver handles any standard nonogram puzzle up to 30×30. If the puzzle is uniquely solvable through logic alone, the solver will find the answer. Puzzles that require guessing (ambiguous puzzles) may not be resolved.
Prefer to solve puzzles yourself? Try our free online nonograms or learn how to play.