Nonogram

Fill cells to match row and column hints, revealing a hidden pattern.

Rules

• Each row and column has numeric hints that tell you how many consecutive filled cells appear in that line, in order.
• Filled cells count toward satisfying a hint. Marked cells are visual reminders that a cell should stay empty.
• Hints turn green when their row or column is correctly satisfied.
• The puzzle is solved when every row and column matches its hints.

Controls

Keyboard

Key	Action
Arrows / wasd / hjkl	Move cursor
z	Fill cell (hold to paint)
x	Mark cell (hold to paint)
Backspace	Clear cell
Ctrl+H	Toggle full help
Ctrl+R	Reset puzzle
Escape	Return to main menu

Mouse

Action	Effect
Left click	Toggle fill on a cell
Right click	Toggle mark on a cell
Left drag	Paint filled cells
Right drag	Paint marked cells

Tips

• Start with the largest hints. If a hint is close to the row or column length, many cells are forced to be filled regardless of alignment. Solve these first to unlock easier deductions elsewhere.
• Mark cells you know are empty. Marks cost nothing and prevent mistakes later. After filling a complete group, mark the cells on either side so you don't accidentally extend it.
• Look for rows or columns whose hints nearly fill the line. When the sum of hints plus the required gaps between them equals (or nearly equals) the line length, most cells can be determined immediately.