Forget the expensive “brain training” apps and dubious supplements. A massive scientific study has revealed that the secret to keeping your mind sharp might just be the puzzle you’re already playing. We all have those moments. You walk into a room and forget why. You struggle to recall a name that’s on the tip of…

Introduction For many of our users here at TheSudoku.com, the morning grid is a daily ritual. It’s a way to wake up the mind alongside a cup of coffee. But have you ever wondered what is actually happening inside your brain while you are scanning for that elusive number 9 in the corner box? Sudoku…