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Nonograms · Expert ✓ Solved

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20×20 patterns.

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Keyboard shortcuts
  • Arrow keys: move around the grid
  • Space or F: fill
  • X: cross out
  • Backspace: erase
  • Ctrl+Z / Ctrl+Y: undo / redo
  • H: hint

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How to play Nonograms

  1. Each clue number is a block of shaded cells in that row or column, in order.
  2. Blocks are separated by at least one empty cell.
  3. Mark cells you know are empty with a cross to keep track.

Full guide with an animated example · Strategy guides · Printable Nonograms

About Expert Nonograms

20×20 patterns. For experienced solvers who enjoy a long, satisfying challenge.

Other levels: Easy · Medium · Hard

Tips for this level

  • Add up a row’s clues plus the gaps: if it equals the row length, the row is fully determined.
  • Work back and forth between rows and columns.

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