Volume Plus Increase Nonogram (15×15)
This is the Volume Plus Increase 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
- 58 of 225
- Longest run
- 12
- Typical time
- 20-40 min
- Category
- Music & media
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How this board opens
A first sweep of the overlap rule down the rows and across the columns settles 69 of the 225 cells, about 31%, which is enough of a skeleton to work outwards from. The most generous opening is row 1, which gives up 15 cells on its own. 4 of the 30 lines are decided outright by their clues, with no room to slide. Straight line logic carries it to 94 cells and then stalls, so the last 131 need cross-referencing between a row and a column that share a cell. The finished picture fills 58 cells, and the longest unbroken run anywhere in the clues is 12.
About this category
Two related shelves sharing one room. On one side are instruments — a harp, an accordion, a marimba, a leather drum, panpipes, a flute, a tambourine, a piano keyboard, a sheet of notation and a single quaver. On the other is the gear that captures and plays things back: a clapperboard, a film reel, a television, a webcam, a security camera, a loudspeaker, a set of VU meters. The two halves look unrelated until you solve a few and notice they fail in the same way.
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