🖼 A hidden picture is waiting inside the grid. Use the numbers above each column and beside each row to work out which squares to fill in — the answer key sits at the bottom, fold it backward along the dotted line before you start.
Each number tells you how many squares in a row to fill in that line, in order. A clue of 2 2 means: fill 2 squares, leave at least one blank, then fill 2 more.
| 6 | 5 2 | 2 1 2 | 1 1 2 | 1 1 2 | 2 1 2 | 5 2 | 6 | 2 | 4 | 6 | 2 3 | 6 | 4 | 2 | 1 | 2 | 1 | 1 | 2 | |
| 3 | ||||||||||||||||||||
| 5 | ||||||||||||||||||||
| 3 8 | ||||||||||||||||||||
| 7 1 1 | ||||||||||||||||||||
| 4 5 | ||||||||||||||||||||
| 2 2 3 | ||||||||||||||||||||
| 1 1 | ||||||||||||||||||||
| 1 1 | ||||||||||||||||||||
| 8 | ||||||||||||||||||||
| 2 2 | ||||||||||||||||||||
| 1 1 | ||||||||||||||||||||
| 1 1 | ||||||||||||||||||||
| 2 2 | ||||||||||||||||||||
| 8 | ||||||||||||||||||||
| 4 | ||||||||||||||||||||
Nonograms (also called picross, griddlers, or hanjie) are logic puzzles that hide a picture inside a grid of numbers:
This puzzle is a 20×20 grid. For the full method, edge logic, and tougher techniques once you're ready to level up, read our complete guide to nonograms and advanced nonogram techniques.
Here's how Mr. Puzzle approaches this one. Rows are numbered top to bottom and columns left to right.
Start your "what if" tests on the longest clues: row 6 (3 8), row 12 (8) and row 17 (8). Long runs have the fewest places they can go, so a wrong guess breaks quickly.
There's exactly one answer, but you can't reach it one line at a time. You'll need the "what if" (contradiction) technique from our advanced techniques guide. Save this one for when everything else feels easy.
The Perfect Match pairs a padlock with its key — the looped shackle and rounded body of the lock in the lower left, and the key with its round bow and notched blade angling in from the upper right. A lock and the one key that opens it. This 20×20 puzzle is rated Hard because line logic alone stalls early and you will need to test a few cells for contradictions. It rewards treating the two shapes separately: build each outline, keep the center of the lock body hollow, and watch the fiddly notches on the key’s blade.
Puzzle Pack: Symbols & Icons