What is an empty rectangle in Sudoku?
What is an empty rectangle in Sudoku?Empty Rectangles in Boxes Empty Rectangles constitute a clever but obscure strategy for Sudoku....
SUDOKU
What is the trick to solve Sudoku fast?
What is the trick to solve Sudoku fast?Focus on only one part of a square, row, or column rather than...
Can Sudoku have multiple solutions?
Can Sudoku have multiple solutions?A Sudoku puzzle can have more than one solution, but in this case the kind of...
What happens to your brain when you play Sudoku?
What happens to your brain when you play Sudoku?Sudoku makes you think – and think critically, and it can also...
What is an XY wing in Sudoku?
What is an XY wing in Sudoku?An XY-Wing is a group of three cells, one sharing a unit with the...
