Each number is a run of filled squares, in order. Fill to match; mark ✕ where nothing goes.
Keep your markings before trying another idea. These copies last for this puzzle, in this tab. Restoring is one undoable move; time and hint costs keep counting.
The notebook is empty. Keep a checkpoint to compare your ideas.
The grid shows your kept markings. A dot means the current square has changed. Clue matches describe runs, not a guaranteed solution.