Receipt Nonogram (20×20)
This is the Receipt nonogram — a 20×20 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
- 20×20
- Difficulty
- Normal
- Filled squares
- 184 of 400
- Longest run
- 20
- Typical time
- 45-90 min
- Category
- Everyday objects
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How this board opens
A first sweep of the overlap rule down the rows and across the columns settles 210 of the 400 cells, about 53%, which is enough of a skeleton to work outwards from. The most generous opening is column 1, which gives up 20 cells on its own. 6 of the 40 lines are decided outright by their clues, 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 184 cells, and one run in the clues is 20 long — near enough the full span of a line that it fixes itself the moment you reach it.
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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