Paint-doku
Very popular game
Beautiful design
48 puzzles in 3 levels (5 × 5, 10 × 10, 15 × 15)
How to Play:
Each number represents how many cells are filled in the 3*3 block around that cell.
Hints:
- 9 means all 9 cells are filled (same as 4 on the corners or 6 on the borders)
- 0 means no cells are filled