Color Sudoku

Key features:
- 4 or 6 colors. No counting required.
- Visual approach. A colorful puzzle without digits
- Trains the brain. The same logical skill are trained as with any regular sudoku puzzle
- Multiple difficulty levels, from "Easy" to "Insane"
- Puzzles are always guaranteed solvable using basic techniques
- Your personal high scores per difficulty level
- Option to highlight errors in the puzzle. Can be disabled

There is no better way to get into puzzle games and train your brain!