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 History of Sudoku – THE HOURGLASS

Sudoku by Grant Fikes - The Art of Puzzles

Sudoku must die

The Sudoku: Its historical evolution - puzzlingcut

The History of Sudoku – THE HOURGLASS

Hourglass History – My Hourglass Collection Museum and Laboratory

Sudoku - The Puzzle Game Collection, Nintendo 3DS games, Games

To Wear the Sudoku Crown, One Must Solve Any Number of Puzzles - The New York Times

Classic Sudoku Archives - The Art of Puzzles