#578 — Sat, Aug 1, 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 #578
Nonogram #578 appeared on Sat, Aug 1, 2026 as hard difficulty on a 20x20 grid. Its solution fills 203 of 400 cells — 51% density, a balanced picture with roughly as much ink as empty space. The clues break down into 71 runs across all rows and columns. The longest single run is 17 cells, in column 10, and the busiest line is row 5 with 3 separate runs to place. Like every daily here, it has exactly one solution reachable by logic alone.
Clues for puzzle #578
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 | 1 |
| 3 | 2 2 |
| 4 | 4 2 |
| 5 | 3 5 2 |
| 6 | 12 2 |
| 7 | 15 |
| 8 | 14 |
| 9 | 2 6 1 |
| 10 | 3 5 3 |
| 11 | 5 4 2 |
| 12 | 5 5 3 |
| 13 | 10 4 |
| 14 | 9 5 |
| 15 | 7 5 |
| 16 | 7 5 |
| 17 | 13 |
| 18 | 14 |
| 19 | 7 3 |
| 20 | 5 |
| Line | Clue |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 2 5 |
| 4 | 11 |
| 5 | 15 |
| 6 | 4 9 |
| 7 | 3 8 |
| 8 | 4 9 |
| 9 | 16 |
| 10 | 17 |
| 11 | 14 4 |
| 12 | 10 2 |
| 13 | 7 2 |
| 14 | 3 3 |
| 15 | 2 6 |
| 16 | 2 7 |
| 17 | 7 8 |
| 18 | 4 7 1 |
| 19 | 6 |
| 20 | 1 |