15×15 Nonogram
Use the number clues in a 15×15 Nonogram to reveal the picture. This is the largest grid size. Every grid has one solution.
▶ Play 15×15 NonogramHow to play Nonogram
Use the number clues beside each row and above each column to reveal a hidden picture. Each clue lists the lengths of the filled runs in that line, in order, with at least one empty square between runs. Fill the squares that must be filled and mark the rest with an X. When the filled squares match the picture, you win.
Frequently asked questions
Are 15×15 nonograms solvable without guessing?
Yes — every puzzle is verified by a logic solver before you see it, so it has a single solution reachable by deduction alone.
Can I select another puzzle?
Yes. Return to the game controls to change the difficulty, theme, or grid size.
Is there a daily mode?
Sudoku, Word Search, and Nonogram each include a daily puzzle and practice options.
QZBrain Focus includes adaptive memory, attention, number, and word games. Puzzle results are tracked separately. You can also read articles on brain training.