Attachment Nonogram (15×20)
This is the Attachment nonogram — a 15×20 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
- 15×20
- Difficulty
- Hard
- Filled squares
- 138 of 300
- Longest run
- 14
- Typical time
- 45-90 min
- Category
- Everyday objects
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How this board opens
The overlap rule is stingy here: one sweep of it across every row and column yields 40 of the 300 cells, 13%, so most of this board has to be argued for rather than read off. The most generous opening is column 14, which gives up 8 cells on its own. Straight line logic carries it to 71 cells and then stalls, so the last 229 need cross-referencing between a row and a column that share a cell. The finished picture fills 138 cells, and the longest unbroken run anywhere in the clues is 14.
About this category
Mugs, umbrellas, light bulbs, scissors — everyday objects has the most varied dimensions of any category on the site: eight distinct grid shapes, from a 5×5 and the catalog's only 5×15 board right up to 15×20 and 20×20. Nothing else here covers that much ground, which makes it the natural category to browse when you want a particular size rather than a particular theme.
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