Cancer Nonogram (15×15)
This is the Cancer 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
- 83 of 225
- Longest run
- 7
- Typical time
- 20-40 min
- Category
- Zodiac signs
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How this board opens
The overlap rule is stingy here: one sweep of it across every row and column yields 8 of the 225 cells, 4%, so most of this board has to be argued for rather than read off. The most generous opening is column 8, which gives up 3 cells on its own. Straight line logic carries it to 10 cells and then stalls, so the last 215 need cross-referencing between a row and a column that share a cell. The finished picture fills 83 cells, and the longest unbroken run anywhere in the clues is 7.
About this category
Twelve puzzles for twelve signs, and every single one is built at exactly 15×15 — the only category on the site with zero size variation at all. That uniformity is the point: if you've settled into a comfortable rhythm at 15×15 elsewhere and want to work through a themed set without the difficulty shifting under you puzzle to puzzle, this is the cleanest way to do it.
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