Logic · Fill-a-pix
Mosaic
Each number counts the black cells around it. Paint the hidden picture.
About Mosaic
Mosaic (Fill-a-Pix) hides a black-and-white picture. Each number tells how many black cells are in the 3×3 block centered on it, including itself. Combine overlapping clues to work out every cell.
Play a new daily puzzle every day, or pick Easy, Medium or Hard in practice mode for unlimited puzzles.
How to play
- A number tells how many black cells are in the 3×3 area centered on it (itself included).
- Use all the numbers to work out which cells are black.
- Unique solution. Satisfied numbers fade; contradictions turn red.
0 and 9 are the best places to start. Sizes: 6×6 / 8×8 / 10×10.
Tap or drag to fill. Switch to “mark white” or right-click to dot cells you know are white.
Tips & strategies
- A 0 makes its whole 3×3 block white; a 9 makes it all black.
- On edges and corners the maximum is 6 or 4 — those clues are complete too.
- Compare neighboring clues: their difference comes from the cells they do not share.
FAQ
How do you play Mosaic?
A number tells how many black cells are in the 3×3 area centered on it (itself included). Use all the numbers to work out which cells are black. Unique solution. Satisfied numbers fade; contradictions turn red.
Is there a new Mosaic puzzle every day?
Yes. A new daily puzzle arrives at midnight (your local time) and everyone gets the same one. Missed days can be played from the archive.
Do I need to sign up or install anything?
No. Daily Brain runs in your browser. You can add it to your home screen and it keeps working offline after the first visit. Progress is stored only on your device.
Are there difficulty levels and hints?
Practice mode offers Easy, Medium and Hard with unlimited new puzzles. Hints are available when you get stuck and are recorded in your result.