Nonogram Solver enumerates line patterns
For every row and column, the tool builds all black-and-white arrangements that satisfy that line's clues and fit the selected grid length.
Free Online Nonogram Solver
Solve Nonogram, Picross, and Griddlers puzzles from clues in your browser.
Enter the row and column number clues for a black-and-white logic grid, then let the Nonogram Solver combine line enumeration, constraint propagation, and backtracking search to find the filled answer locally.
Nonogram Solver — enter row and column clues
Choose a common size, paste one clue line per row and column, then solve. Use spaces or commas between numbers; use 0 for a fully blank line.
Puzzle size
First version scope: manual clues only. This Nonogram Solver does not perform image recognition, screenshot parsing, or OCR.
Nonogram Solver result
Enter clues, then solve to see the filled grid and clue checks.
Row clue check
Column clue check
Copyable text result
Step-by-step Nonogram Solver reasoning
- Enable step-by-step reasoning before solving to record the logic trace.
Nonogram Solver workflow from clues to filled grid
The page keeps Nonogram Solver, Picross Solver, Griddlers Solver, and Japanese Crossword Solver intent together because the input and solving logic are the same.
Nonogram Solver clue entry
Paste row clues and column clues exactly as the puzzle gives them. The Nonogram Solver accepts common sizes such as 5×5, 10×10, 15×15, and 20×20 without needing image uploads.
Nonogram Solver logic search
The solver enumerates possible patterns for each row and column, removes candidates that conflict, and only uses backtracking when pure propagation cannot finish the grid.
Nonogram Solver result checks
After solving, the result area shows the filled black-and-white grid, row and column clue validation, no-solution or multiple-solution warnings, and a copyable text answer.
How the Nonogram Solver works
This Nonogram Solver uses a practical browser-side algorithm for black-and-white Picross, Griddlers, and Japanese crossword puzzles.
Nonogram Solver propagates constraints
As soon as a cell is forced by all remaining row or column candidates, the solver fixes it and filters the crossing line candidates again.
Nonogram Solver backtracks carefully
If logic alone stalls, the solver branches on the most constrained line and searches until it proves no solution, one solution, or at least two valid solutions.
Nonogram Solver input guide
Use these tips to enter clues accurately and understand the first-version limits of the Nonogram Solver.
01
Format Nonogram Solver clues one line at a time
Each row clue and column clue gets its own line. A clue like 2 1 means two filled cells, at least one blank cell, then one filled cell.
- Spaces and commas both work
- Use 0 for a completely empty row or column
02
Pick the Nonogram Solver size first
Select the row and column count before solving. Common Picross and Griddlers sizes such as 5×5, 10×10, 15×15, and 20×20 are supported.
- Rows must match row clue lines
- Columns must match column clue lines
03
Know the Nonogram Solver boundary
This first version is a pure front-end solver for manually typed clues. It intentionally does not read screenshots, photos, PDFs, or OCR output.
Manual entry keeps the tool fast, private, and reliable for the first release while avoiding the complexity of image recognition.
Nonogram Solver FAQ
Common questions about solving Nonogram, Picross, Griddlers, and Japanese crossword puzzles from clues.
Is this Nonogram Solver also a Picross Solver and Griddlers Solver?
Yes. Nonogram, Picross, Griddlers, and Japanese crossword usually describe the same black-and-white clue-grid logic puzzle. This Nonogram Solver handles them together on one page instead of splitting them into separate tools.
How do I enter clues into the Nonogram Solver?
Enter one clue line per puzzle row and one clue line per puzzle column. Separate numbers with spaces or commas, such as 3 1 or 3,1. Use 0 for a row or column with no filled cells.
Can the Nonogram Solver tell me if a puzzle has no solution?
Yes. If the row and column clues contradict each other, the Nonogram Solver reports that no solution exists and leaves the result area ready for corrections.
Can the Nonogram Solver detect multiple solutions?
The solver searches for up to two valid grids. If it finds more than one solution, it shows one valid answer and warns that the clue set is not unique.
Does the Nonogram Solver show step-by-step reasoning?
Yes. Turn on the step-by-step option before solving to record pattern counts, forced cells, branch choices, and final outcome. The trace is concise so it stays readable on mobile.
Does the Nonogram Solver support OCR or screenshot recognition?
No. This first version does not do image recognition, screenshot parsing, or OCR. It only solves manually entered row and column clues locally in your browser.
Are my Nonogram Solver clues uploaded anywhere?
No. After the page loads, the Nonogram Solver runs in browser JavaScript. Your clues are processed locally and are not sent to a database or third-party API.
Try more free tools after the Nonogram Solver
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After this Nonogram Solver, browse the full tools page for number, word, game, and logic puzzle helpers.
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