How it works:
Each row and column has numbers beside it. These numbers show how many consecutive filled squares appear in that line.
Example: a clue of 3 1 means there is a group of 3 filled squares, then at least one empty square, and then a single filled square.
Use logic to decide which squares should be filled and which should be blank.
Controls:
- Click or tap once → fill a square.
- Click or tap again → mark it with an X (empty).
- Click a third time → clear the cell back to empty.
Keep filling and marking until every row and column matches all its clues.
Tips:
- Start with rows or columns that have large numbers — they provide the most information.
- There must always be at least one blank square between separate clue groups.