#503 — Mon, May 18, 2026
Past puzzle — replay any time. Does not affect your streak.
A free nonogram (picross) puzzle, fresh every day. Use the row and column number clues to fill in the correct cells.
About puzzle #503
Nonogram #503 appeared on Mon, May 18, 2026 as hard difficulty on a 20x20 grid. Its solution fills 147 of 400 cells — 37% density, a fairly open picture where empty cells do a lot of the work. The clues break down into 56 runs across all rows and columns. The longest single run is 13 cells, in column 10, and the busiest line is row 13 with 3 separate runs to place. Like every daily here, it has exactly one solution reachable by logic alone.
Clues for puzzle #503
Each clue lists the lengths of the filled runs in that line, in order, with at least one empty cell between runs. A clue of 0 means the line is empty.
| Line | Clue |
|---|---|
| 1 | 1 |
| 2 | 2 3 |
| 3 | 9 |
| 4 | 10 |
| 5 | 10 |
| 6 | 10 |
| 7 | 10 |
| 8 | 11 |
| 9 | 8 3 |
| 10 | 7 4 |
| 11 | 6 3 |
| 12 | 6 2 |
| 13 | 1 3 2 |
| 14 | 1 2 2 |
| 15 | 4 6 |
| 16 | 4 4 |
| 17 | 3 3 |
| 18 | 3 |
| 19 | 3 |
| 20 | 1 |
| Line | Clue |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 3 |
| 5 | 2 |
| 6 | 1 |
| 7 | 3 |
| 8 | 8 |
| 9 | 10 |
| 10 | 13 |
| 11 | 11 |
| 12 | 10 |
| 13 | 11 |
| 14 | 6 4 |
| 15 | 7 8 |
| 16 | 8 5 |
| 17 | 10 5 |
| 18 | 8 |
| 19 | 6 |
| 20 | 1 |