26:18

In Sudoku, The Human Can Still Beat The Machine

32:48

Classic Sudoku: A New Incredible Trick

27:54

The Best Way To Understand The Sudoku Y-Wing Technique

17:02

A Great Technique in a Classic Sudoku

26:51

A Brand-New Trick For Classic Sudoku

23:01

Tough Sudoku - Classic

19:46

These 2 Tricks Can Solve Most Of The World’s Hardest Sudokus

32:14

Pure Arrow Sudoku Skill from one of the best Sudoku Creators.