Nonogram

How to play

1. Read each row's clues from left to right and each column's from top to bottom. Each number is a run of filled squares; separate runs with at least one empty square. A 0 means no filled squares.
2. Choose Fill, × Empty, or Erase, then tap squares. Tapping an existing mark with the same tool clears it. Right-click or press X to mark empty; arrow keys move the selection and Delete clears the selected square.
3. Complete every required fill and remove any extra fills. Empty squares may be clear or marked ×; marking every empty square is optional.

Head-to-head rules

Complete the hidden pattern correctly before your opponent. Both players get the same puzzle and start together, with 3 minutes to finish. Completion time decides the match; fewer moves or a higher solo score do not beat an earlier correct finish. Finishes within 0.1 seconds draw. If neither player finishes before time runs out, the match is a draw.

Your moves and answers stay private. Leaving through the game controls forfeits the match; closing the page does not pause its clock.

Real-player matches update this game's own Elo rating. Daily and practice results keep their separate progress and never change Elo.