What is a Nonogram?
It is a picture logic puzzle where row and column clues describe groups of filled cells.
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How to play Nonogram
- Read the number clues for every row and column.
- Fill cells that must belong to a block and cross cells that must stay empty.
- Satisfy every clue to reveal the complete pattern.
Rules
- Each number is the length of one continuous filled block.
- Separate multiple blocks with at least one empty cell.
- Crosses help deduction but are not required to finish.
- Every puzzle has one solution and can be solved without guessing.
Strategy tips
- Start with large clues and lines with little spare space.
- Use overlap to find cells shared by every possible placement.
- Cross the boundary after completing a block.
- Cross all remaining cells in a completed line.
- Alternate between rows and columns as new cells become certain.
- Use only confirmed deductions instead of guessing.
Nonogram questions
How do I play?
Fill certain cells, cross certain empty cells, and keep alternating between row and column clues.
How do multiple numbers work?
Each number gives one filled run, in order, with at least one empty cell between runs.
Can I play on a phone?
Yes. The board automatically fits the screen and supports tap and drag.
Does each puzzle have one answer?
Yes. The built-in catalog is checked for a unique, logic-only solution.
Where is progress saved?
Progress and records stay in local storage in this browser.
Do hints affect my best time?
A hinted solve counts as complete but does not update the best time.