Darkroom

Nonograms under the safelight: solve the clues and a photo develops.

The numbers are the runs of dark cells in that row or column, in order, with at least one gap between runs. Click / drag uses the tool on the toolbar, 🖐 develop or ✕ mark where nothing goes. Switch with the button or the 1 / 2 keys. On a mouse, right-click always marks ✕. Developing a wrong cell fogs the print: it turns into ✕ for you and costs +30 s on the clock. Finish with no fog for a flawless print. Every negative is provably solvable with no guessing. Keys: ←↑↓→ move, Z or Space develop, X mark, R start over.