Lean Sudoku

Full-featured Lean Sudoku!
Enjoy your puzzle-solving skills on a clean user interface. With a lot of features:
- 100% checked puzzles, solvable and unique solution!
- Annotations
- Navigate on your solution history to check for errors
- Avoid silly errors by enabling the "enforce consistency" on your annotations and solutions
- Differentiate between clues and solutions
- All puzzles are rated and have a systematic difficulty score
- Dark mode
- Chart where you can check your progress on the level

Near future new features:
- Historic of puzzles, replay that damned puzzle that was resisting you