A Quiet Evening, A Pencil, and a Sudoku Puzzle
How a Simple Grid Became My Favorite Brain Game
A few years ago, I didn’t think I would ever enjoy number puzzles. To be honest, numbers usually reminded me of school exams and long math classes, not something relaxing or fun.
But one evening changed that.
I was visiting a friend, and while waiting for dinner, I noticed a newspaper on the table. On the last page, there was a small...
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