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Sushi Riceball Nonogram (15×15)

This is the Sushi Riceball 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
Hard
Filled squares
85 of 225
Longest run
11
Typical time
20-40 min
Category
Food & Drink

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How this board opens

The overlap rule is stingy here: one sweep of it across every row and column yields 44 of the 225 cells, 20%, so most of this board has to be argued for rather than read off. The most generous opening is row 15, which gives up 7 cells on its own. Straight line logic carries it to 54 cells and then stalls, so the last 171 need cross-referencing between a row and a column that share a cell. The finished picture fills 85 cells, and the longest unbroken run anywhere in the clues is 11.

About this category

Food & drink is one of the larger themed shelves on Nonogram Hub, and it skews toward the harder end too: most of it sits at 15×15, there is a real cluster of full 20×20 pieces, and only a handful of smaller warm-ups are mixed in. Cups, fruit, slices of cake, bottles — the subjects are varied enough that no two puzzles here feel like the same picture in a different size, which matters when you're working through this many boards in one theme.

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