Mosaic
A grid of numbers hides a picture — paint the right cells so every clue matches the filled count around it, and the image emerges.
How to play
Mosaic is a pure-logic paint-by-deduction puzzle. Every numbered cell is a clue telling you exactly how many cells in its surrounding 3×3 block (the clue cell included) must be painted. Satisfy every clue at once and the board resolves into a hidden picture.
Work outward from the most constrained clues. A 0 means none of its nine cells are painted; a 9 means all of them are. Use those certainties to chip away at the numbers in between.
- Paint cells black so each clue equals the number of filled cells in its 3×3 area.
- Mark cells you know stay empty so you don't re-test them.
- A clue glows green when its area is exactly satisfied and red when too many cells are painted.
- Finish every clue to reveal the picture and stop the timer.
Controls
- Desktop: left-click paints a cell black (click again to clear); right-click marks a cell as definitely empty.
- Phone & tablet: tap to paint a cell; a mouse is handy for the right-click 'empty' marks — best played on a desktop or laptop.
Game modes
- Daily — everyone gets the same seeded puzzle each day to compare times.
- Practice — fresh random puzzles on demand.
- Three sizes: Easy, Medium, and Hard, with the larger grids holding more clues.
Tips & strategy
- Start at the edges and corners — those clues cover fewer cells, so they pin down certainties fast.
- A 0 lets you mark all nine surrounding cells empty instantly; a 9 lets you paint them all.
- When two overlapping clues differ by one, the difference tells you the exact state of the cells they don't share.
- Solve faster to keep your score high — the clock subtracts points over time.
About Mosaic
Mosaic is a neighbor-count logic puzzle in the paint-the-grid family, where deduction alone reveals a picture with no guessing required. This is an original, free browser version with daily and practice puzzles, playable instantly with no download or sign-up.
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