Sewing Needle Thread Nonogram (15×15)
This is the Sewing Needle Thread nonogram — a 15×15 picture logic puzzle. Use the number clues beside each row and column to work out which squares are filled, and the picture appears as you go. Every square can be deduced; you never have to guess.
About this puzzle
- Size
- 15×15
- Difficulty
- Normal
- Filled squares
- 107 of 225
- Longest run
- 5
- Typical time
- 20-40 min
- Category
- Tools & crafting
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How this board opens
The overlap rule is stingy here: one sweep of it across every row and column yields 55 of the 225 cells, 24%, so most of this board has to be argued for rather than read off. The most generous opening is column 15, which gives up 15 cells on its own. One of the 30 lines is decided outright by its clue, with no room to slide. From there the board finishes on row-and-column logic alone — there is no point where you have to try a cell both ways and see which one breaks. The finished picture fills 107 cells, and the longest unbroken run anywhere in the clues is 5.
About this category
A hammer, a pickaxe, a scythe, a paint roller, a quill and an inkwell, a needle drawing thread, a mortar and pestle, a padlock hanging open. Most of what is on this shelf is an implement, and an implement is nearly always the same two things joined together: a handle and a head. That turns out to matter more for solving than the subject does.
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