Is sudoku good for your brain?

Related questions

1. Is there a mathematical way to solve Sudoku?
2. Does Sudoku increase IQ?
3. How can I play Sudoku for free?
4. What is the swordfish technique in Sudoku?
5. What is a jellyfish in Sudoku?
6. How long should it take to solve a hard Sudoku?
7. Is sudoku good for Alzheimer's?
8. Can a sudoku puzzle be unsolvable?
9. Can a sudoku be unsolvable?
10. Can all Sudoku puzzles be solved without guessing?

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21. #sudoku