Printable Nonogram Puzzle (Free PDF)
A picture logic puzzle with the block clues printed beside every row and above every column, and the solved picture behind it.
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A nonogram hides a small picture in a grid. The numbers beside a row list the blocks of filled squares in order, with at least one blank between neighbouring blocks, and the numbers above a column do the same going down. You shade the squares you have proved filled and cross out the ones you have proved blank, and the two kinds of mark feed each other until the picture appears. Choose a 10x10 grid for a short sitting or a 15x15 for a longer one.
Every picture on this page is checked by a line solver before it is printed: the puzzle only ships if working one row or column at a time fills the whole grid, which also proves the clues describe exactly one picture. That means no guessing is ever required and no branch ever has to be backtracked. Pictures with blank lines, solid blobs or thin static are thrown away, so the clues have real structure to work with.
Heavier rules every five squares keep long rows countable without pointing at a square and counting from the edge, and a short how-to-play note sits under the grid for a first-time solver. The squares are large enough to take a cross in pencil and still be shaded in later. Page two shows the finished picture in solid squares, so you can check a single awkward line rather than the whole grid. The sheet is a plain vector page with nothing to type into, and it prints cleanly on any home printer.
