Play a Nonogram Puzzle Online
A Nonogram is a grid deduction puzzle where number clues describe consecutive runs of filled squares. Solve both the rows and columns and a hidden pixel pattern appears. This Practice mode uses a bundled, solver-verified puzzle library instead of generating untested grids on the fly.
How the clues work
Each number gives the length of one filled run in that line. A clue of 4 means four neighboring filled cells. A clue of 3 1 means a group of three, at least one empty square, then one filled square. The order never changes. The challenge comes from crossing what a row permits with what its columns permit until individual cells become forced.
Logic-only source boards
A picture that looks attractive is not automatically a fair Nonogram. The clues can be ambiguous, or a technically unique puzzle can still force trial-and-error. Before a source enters this release, an independent line solver repeatedly enumerates the placements still allowed by every row and column and keeps only boards where those deductions force the complete solution. Rotations and reflections preserve that deduction structure for fresh Practice variants.
Designed for actual play
The board supports explicit Fill, X and Clear tools, so phone players do not have to discover a hidden long-press gesture. Tap or drag after choosing a tool, right-click to mark X on desktop, use Undo and Redo freely, and ask for a single-cell Hint when you are stuck. Progress autosaves locally so closing the tab does not throw away an unfinished puzzle.
Choose the grid size that fits your session
The three sizes use different source pools rather than stretching the same tiny puzzle.
Learn the clue rhythm
Short grids make overlaps and completed-line crosses easy to see. They are a good place to learn the relationship between one row clue and the columns that intersect it.
STANDARD · 10×10Build full-grid deductions
More clue combinations mean you often alternate between several rows and columns before the picture becomes clear. The larger canvas also makes the final reveal more satisfying.
LARGE · 15×15Settle in for a longer solve
The largest current board keeps the same no-guess verification while asking you to track more partially constrained lines. The compact grid remains usable on a narrow phone without requiring a desktop-only control scheme.
What makes a clean solve?
The game separates puzzle completion from the optional assistance you use along the way.
You can switch on immediate mistake checking if you want training feedback, or switch it off when you prefer to discover contradictions yourself. A Hint fills or crosses one cell that belongs to the verified solution. Neither option blocks completion, because assistance is a preference rather than a punishment mechanic. However, a clean personal best is reserved for a solve with no Hint and no checked mistake. That keeps the fastest clean times comparable to your own earlier clean attempts without pretending an assisted solve was the same task.
The timer also waits for your first move. Reading the instructions, looking at the clue layout, or choosing a grid size does not silently spend your solve time. If you leave and return, the current board and elapsed play time are restored locally; time away from the page is not counted as active solving. These choices make the result screen useful as a personal practice record rather than a vague engagement counter.
A practical solving sequence
There is no required order, but these habits make a first Nonogram much easier to read.
1. Start with crowded clues
Look for a run that nearly fills its line. When a long block can only slide a little, the cells shared by every legal placement are guaranteed filled. Marking those overlaps often creates the first strong column deductions.
2. Cross completed lines
Once the filled runs in a row exactly satisfy its clue, every remaining unknown cell in that row can be marked X. Those X marks can prevent column runs from extending through the wrong area and create new forced placements.
3. Re-scan after every breakthrough
A single filled square can reduce the possible placements in two lines at once. Nonograms reward cycling through the board instead of staring at one difficult clue indefinitely. If every line looks stuck, a Hint can identify one correct cell without revealing the whole picture.
Daily or unlimited?
Use Practice for repetition, then switch to the specialist Daily when you want a stable board for the date.
Unlimited Practice chooses from the verified source pool and applies a deterministic rotation or reflection, producing more replay without changing what the clues logically imply. Daily Nonogram instead freezes one 5×5, one 10×10 and one 15×15 board for the calendar date. Solving any Daily size keeps the specialist streak active, while clearing all three records a complete three-board set. This specialist routine is intentionally separate from the platform’s existing Today’s 6 rotation.