🎯 Goal
Shade (black out) the correct cells so that each row and column contains the exact number of white cells shown by the clue.
📜 Rules
- The number next to each row/column = how many white cells it must have.
- No two black cells may share an edge (diagonal is OK).
- No 2×2 block of black cells.
- All white cells must be connected (one group).
🕹️ Controls
- Tap a cell to toggle between white and black.
- Undo reverses your last move.
- Check verifies your solution. Solve fast for ⭐⭐⭐!
⭐ Star Ratings
- ⭐⭐⭐ — Solve under the target time
- ⭐⭐ — Solve in moderate time
- ⭐ — Complete the puzzle
💡 Tip
Start with rows/columns where the clue equals the grid size — those are all white. Then look for rows with small numbers: many cells must be black there.