Two sheets · one grid each
Printable 15×15 Nonograms
Two hundred and twenty-five squares, longer clue sequences, and deductions that run several lines deep. One grid per page, answers on the last sheet.
Nonogram Nownonogramnow.com
Sheet 1 of 2
Hidden Picture
Use the clues to reveal the hidden picture. The answer key is on the last sheet.
nonogramnow.com · Each number is one unbroken run of filled squares, in order, with a gap between runs.
Nonogram Nownonogramnow.com
Sheet 2 of 2
Hidden Picture
Use the clues to reveal the hidden picture. The answer key is on the last sheet.
nonogramnow.com · Each number is one unbroken run of filled squares, in order, with a gap between runs.
Nonogram Nownonogramnow.com
Answer
Answer key
Keep this sheet aside until the grids are finished.
nonogramnow.com · Each number is one unbroken run of filled squares, in order, with a gap between runs.
What comes out of the printer
Three pages: two 15×15 grids, one per sheet, each with its clue lists and a header line for a name, a date and a time, then an answer key with both solved pictures drawn small. A 15×15 is an hour of work, so the header line is there for people who put a puzzle down and come back to it.
Sweeps, not hunts
On a 15-wide line, a clue of 9 fills three squares before you know anything else, and a clue of 12 fills nine. Take those first, everywhere they exist, and only then start reading the lines that need a crossing square. Working the board in full passes is what turns a 15×15 from a puzzle into a procedure.
Mark the crosses. On a grid this size the proved-empty squares carry more information than the filled ones, because they are what cut a long open line into short measurable pieces — and a piece too short to hold any remaining clue is empty all the way across.
Printing notes
The sheet is laid out for the 182×251mm area A4 and Letter have in common, and prints correctly on either without changing any setting. Use 100% scale and a sharp pencil: at this size the grid is drawn with a heavier line every five squares, which is what keeps a long row countable.
Common questions
- How long does a 15×15 nonogram take?
- Forty minutes to an hour and a half, depending on how disciplined the sweeps are. It is the size where working the whole board in passes beats chasing one interesting line, because most lines only become solvable after a crossing line has settled something.
- Do I need to guess on a 15×15?
- No. Every puzzle here is verified to have exactly one solution reachable by deduction. If a square will not resolve, another line settles it first — usually one you have not swept since the last few marks went in.
- Is a 15×15 too big to print on one page?
- No, but it needs the whole printable area, which is why there is one grid per sheet. Print at 100% rather than fitting to page, or the clue numbers along the edges start to crowd.
- What should I do when a 15×15 stalls?
- Recount the slack on the two or three longest lines before looking for a clever deduction. A miscounted gap is a far more common cause of a stalled grid than a genuinely hard step, and on paper it is easy to make.