Tutorial #56. A difficult puzzle solved from beginning to end. Lots to learn.
2:24
Tutorial #57 Chain of pairs.
37:08
Sudoku Tutorial #62. How to spot an X wing using rows, and then knowing what to do!
29:43
Sudoku Tutorial # 88 The many tricks for Matching Pairs.
26:04
Tutorial #50 Solving a hard puzzle from the beginning to the end
50:47
Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.
39:56
A Breakthrough In Sudoku Technique
29:09
Easy Solving for HARD Level Sudoku Puzzles: Solve With Me
17:16