Nonograms (Picross): The Logic Puzzle Hiding in a Pivot Table

If you love Sudoku's logic but want a picture at the end, nonograms (a.k.a. picross or griddlers) are your puzzle. Data Heatmap hides them inside a pivot-table heatmap.

How nonograms work

Numbers along each row and column tell you the runs of filled cells. Use logic — never guessing — to fill the grid and reveal a hidden picture. It's deeply satisfying and completely pausable.

Why a heatmap is the perfect cover

Pivot-table heatmaps are already grids of coloured cells with numbers on the edges. The disguise is almost too easy — your filled cells just look like conditional formatting.

Play free, hide fast

Multiple sizes, clean clue display, and the usual Esc×3 escape. Solve a nonogram now.