The History of Sudoku – THE HOURGLASS

Logic, patience and a pencil: that’s all you need to defeat Sudoku’s 9×9 grid. At first glance, the maze of numbers and empty squares seems like a mathematical quandary. But upon closer inspection, Sudoku requires no mathematical skill at all. It also doesn’t require general knowledge (like crossword puzzles) or linguistic ability (like word games)

The origin of the Sudoku Puzzle

The Hardest Sudokos In Existence: The by Hoshiko, Masaki

The Largest Sudoku Book in the History of the Universe: 2000 Puzzles with 5 Difficulty Levels: Tanaka, Kiyo: 9781500410339: : Books

Sudoku Puzzle What Images Missing Each Line Pirates Ship Cannon Stock Vector by ©Oleon17 427347412

Sudoku by Grant Fikes - The Art of Puzzles

Beginning of Time - The New York Times

The Secret To Being Ageless – Going All Natural! - Kerrisdale Physiotherapy

Classic Sudoku Archives - The Art of Puzzles

The origin of the Sudoku Puzzle