You can choose from four difficulty levels: Easy, Medium, Hard, and Expert.
Please use the memo and hint functions to solve the problems.
- Each horizontal row contains one number from 1 to 9.
- Each vertical column contains one number from 1 to 9
- Each 3x3 block contains one number from 1 to 9
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![[Brain Training] Sudoku](https://play-lh.googleusercontent.com/Z8_V-GY8NORXKsKj5okPXJR0RL10cUPgPW5OOfHbXeKvNJRfBHDfgOeNajqpFCtgXA=w230-rw)
![[Brain Training] Sudoku - Screenshot 1](https://play-lh.googleusercontent.com/HcRoGU5GGXtuLIrUh7TNxdg4jd-eSqtYjp3DLgjO3duivmfw3ZH2GvCW5XJ-G6kPaA=w300-rw)
![[Brain Training] Sudoku - Screenshot 2](https://play-lh.googleusercontent.com/6ycfPuXQ8Y3QfW6ZUKFAUafiaVHTAhX4kYQ7RoyrmQpaVFnKcN8zAM9KCykdmLIrAjGv=w300-rw)
![[Brain Training] Sudoku - Screenshot 3](https://play-lh.googleusercontent.com/Hn8b-WPWEFfPk2YHcowTdI62iagR_cIY61pvhjU5Vnj9OePOHWnUMsrN6hWW6K-rbuQ=w300-rw)
