Rules & objective
Read row clues left to right and column clues top to bottom. Numbers give the lengths and order of filled runs, with at least one empty cell between runs; 0 means an empty line. Decide every cell as filled or empty and match all clues to finish; grey is undecided. Freely correct mistakes, without lives. Right-click marks empty, Shift erases, mouse dragging paints a stroke; phone dragging only pans. Our 90 independently generated abstract fields have 5, 10 or 15 cells per side, complete line deductions and a unique solution; rotations/reflections vary them. Do not guess a picture. Hints infer from public clues, ignore guessed marks, can correct errors and name the source line. Check identifies one wrong cell. Undo, redo and reset retain assists; reset keeps the puzzle, New changes clues. The clock pauses while reading rules.
Controls
←↑↓→ Choose · Enter tool · Space empty · X erase · H hint · U undo · R redo · F fullscreen
Worked example
Clues 2, 1 describe two filled runs of lengths two and one, with at least one empty cell separating them.