🖼 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.
| 1 1 | 15 | 15 | 15 | 3 3 | 3 3 | 3 3 | 4 4 | 5 5 | 6 6 | 11 | 9 | 5 | 0 | 0 | |
| 9 | |||||||||||||||
| 9 | |||||||||||||||
| 10 | |||||||||||||||
| 3 5 | |||||||||||||||
| 3 4 | |||||||||||||||
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| 3 3 | |||||||||||||||
| 3 4 | |||||||||||||||
| 3 4 | |||||||||||||||
| 3 4 | |||||||||||||||
| 3 5 | |||||||||||||||
| 10 | |||||||||||||||
| 9 | |||||||||||||||
| 9 |
Nonograms (also called picross, griddlers, or hanjie) are logic puzzles that hide a picture inside a grid of numbers:
This puzzle is a 15×15 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.
Not sure where to begin? Here's exactly how Mr. Puzzle opens this grid. Rows are numbered top to bottom and columns left to right.
Try column 13 (5). The rows near the top and bottom are too short to stretch that far right, so the 5 has to sit somewhere in rows 4 to 12. Work out the overlap and row 8 is always filled.
Three full columns and two empty ones hand you a big head start, and every row's first run is locked against that solid left side. From there, the curve on the right is just a matter of matching rows to columns. No guessing needed.
Today's radio operators say Delta, but it wasn't always that way. During World War II, American and British forces used an older spelling alphabet that began Able, Baker, Charlie, Dog. Those words worked fine for English speakers but were tricky for everyone else. So in the 1950s, a new international list was chosen, with words that could be understood in many languages over a noisy radio. That's the one we know today, sometimes called the NATO phonetic alphabet. Dog became Delta, and only a handful of the old words, like Charlie, made it into the new list unchanged.
They Call Me Delta belongs to our Phonetic Alphabet series (based on the NATO phonetic alphabet), where each puzzle hides the letter behind its call sign — here, a capital D. Three solid full-height columns build the straight spine down the left, while the rounded runs on the right swing out and close the loop. At 15×15 and rated easy, it’s a satisfying five-minute solve and a good showcase for the overlap trick on those long column clues.
Puzzle Pack: Symbols & Icons