Nonogram FAQ
A shorter set of answers than the full solving guide — this page is for the basic "what even is this puzzle" questions, not step-by-step technique. If you already know what a nonogram is and want to learn to solve one, the how-to-solve guide is the better place to start.
What is a nonogram?
A nonogram is a logic puzzle played on a grid of squares, where every row and column has a list of numbers next to it instead of any starting picture. Each number tells you the length of one unbroken run of filled-in cells in that line, in the order the runs appear. There's no guessing involved in a well-formed puzzle — filling in the cells that satisfy every row and column clue simultaneously always reveals a hidden picture underneath, made entirely out of logic rather than art skill.
How is a nonogram different from sudoku?
Both are logic puzzles with no luck involved, but the mechanics don't overlap at all. Sudoku is about placing digits 1-9 so none repeat in any row, column, or 3×3 box — the grid stays a grid of numbers the whole time. A nonogram's clues are only ever used to figure out which cells to fill in or leave empty; once solved, the numbers disappear from view and what's left is a black-and-white picture, not a number grid. If sudoku is about arranging numbers correctly, a nonogram is closer to a paint-by-numbers puzzle where the numbers are the only instructions you get.
How is a nonogram different from a crossword?
A crossword clues words through definitions and wordplay, and the reward for solving it is the words themselves crossing each other correctly. A nonogram never involves language at all — its clues are pure counts of filled cells, and the reward for solving it is a picture, not a word. The two share a crossing-grid layout and a "across and down both have to agree" structure, which is probably why nonograms are sometimes lumped in with crosswords, but the actual logic involved is unrelated.
Where do nonograms come from?
The concept is usually credited to two independent inventors in Japan in 1987: Non Ishida, who published a set of these grid puzzles in a Japanese magazine, and Tetsuya Nishio, who created a similar format around the same time. The name "nonogram" is a nod to Non Ishida's name. The puzzle spread internationally through several different names over the next decade or so — "Griddlers" in some markets, "Hanjie" in the UK, and "Picross" (short for "picture crossword") once Nintendo's Picross video game series popularized the format on handheld consoles starting in 1990. All of those names describe the exact same puzzle mechanic.
Are nonograms good for your brain?
They're a pure deductive-logic exercise — every correct move follows from clues you already have, with no arithmetic and no vocabulary required — which is part of why they're often recommended as a low-stakes way to practice sustained, methodical attention. That's an informal, common-sense case rather than a specific clinical claim; if you're looking for a puzzle that rewards patience and careful cross-checking over speed or memorization, a nonogram fits that description well.
Do I need an account to play?
No — every puzzle on Nonogram Hub, including the daily puzzle, is free to solve without signing up. Creating an account only matters if you want your streak, points, and completed-puzzle history to follow you across devices instead of staying in one browser.