Nonogram 15×15Take your time over a big picture
15×15 is 225 squares: a challenging nonogram (Oekaki Logic) for taking your time over a big picture. Of its 164 puzzles, the first 30 are free, with no sign-up, in the browser on a phone or a computer.
Who it's forThose who want more than 10×10. The daily "Today's puzzle" is 15×15 too.
- Grid15×15 (225 squares)
- Time per puzzle7-15 minutes
- Puzzles164
- FreeFirst 30
1How to solve 15×15
- In a line of 15 squares, a "10" always covers the middle 5 squares. Work from the lines with the biggest numbers, filling the overlaps.
- As soon as you know a square stays empty, mark it. Once marks divide a line, the numbers that go in its short sections are settled.
- Mark everything left in a line that matches its numbers. In 15×15, you will often be spreading out like this, one square at a time.
The rules and how to read the numbers, with pictures, are in How to play nonograms and tips.
2How the sizes differ
Difficulty has 5 levels, set by the grid size and how many times you have to go over the lines. Difficulty 4 needs few passes; 5 is a tough one that gives up a square at a time.
| Size | Difficulty | Time per puzzle | Puzzles |
|---|---|---|---|
| 5×525 squares | 1 | 1-2 minutes | 74all free |
| 10×10100 squares | 2, 3 | 3-6 minutes | 160first 30 free |
| 15×15225 squares | 4, 5 | 7-15 minutes | 164first 30 free |
| 20×20400 squares | 4, 5 | 20-40 minutes | 30first 3 free |
3How to play
The puzzles on the 15×15 road run easier first. The first one you have not solved and the next 2 are open. The first 30 are free. After that, one ticket opens the next 2 on this road, or the Lounge Pass opens them all.
Pictures you solve go into their chapter's album. A picture keeps its name a secret until you solve it. In "Today's puzzle" (15×15), which changes at 0:00 every day, you race everyone's times.
415×15 questions
How many 15×15 puzzles are there?
164 puzzles: 104 pictures and 60 embroidery patterns. The first 30 are free. After that, one ticket opens the next 2, or the Lounge Pass opens them all.
How long does a puzzle take?
About 7-15 minutes. The ★ target time is 7 minutes at difficulty 4 and 10 minutes at difficulty 5.
Can I print them and solve on paper?
The 30 free puzzles print large on A4. Print one at a time and page 2 is the answer.
Is there only one answer?
Yes. Every puzzle has been checked: working from the numbers one line at a time leads to one picture, with no guessing.