Nonogram (Picross)
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Nonogram is the picture logic puzzle also known as picross, griddlers or paint by numbers, free to play in your browser. Every row and column has a list of numbers that gives the lengths of the runs of filled squares in that line, in order. Use those clues to work out which squares are filled and which stay empty, and a hidden picture appears. Start with a relaxed 10x10 grid and move up to 15x15, 20x20 or even 30x30 when you want a longer session, or set your own size. Every puzzle is generated fresh and can be solved by logic alone, with no guessing. Mark empty squares with crosses to keep track, drag to fill whole lines at once, and undo any mistake. Your progress is saved on this device automatically.
How to play
Choose Fill, Cross or Clear below the grid, then tap or drag across squares. Long-press a square for the opposite action. Mouse: left-click fills, right-click crosses, Shift-click clears. Ctrl+Z to undo, N for a new puzzle.
