Tutorial #78 Sudoku. The Bug +1

Tutorial #80 A difficult sudoku puzzle made easy

The Sudoku BUG Problem and the BUG +1 Solution: A Subset to Uniqueness

Tutorial #56. A difficult puzzle solved from beginning to end. Lots to learn.

Sudoku Tutorial # 88 The many tricks for Matching Pairs.

Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.

Sudoku Tutorial #62. How to spot an X wing using rows, and then knowing what to do!

Tutorial #77 Small square within a block trick.

Tutorial #99 WOW Lots to learn for all levels.

Sudoku. Lesson 18 The amazing 3X3.

Tutorial #87. Beginners Delight. A difficult puzzle made easy

How To Play Sudoku for Beginners

Sudoku tutorial #93 A procedure or not!

Unique Rectangles Part 1 / Sudoku Tutorial #20

Techniques for Hard Sudoku

Tutorial # 65 Unique Sudoku patttern.

Remote Pairs Sudoku Chain Strategy

Tutorial #82 Sudoku. An Unbelievable Technique. (locked little numbers)

Sudoku tutorial #69. Amazing puzzle with lots to learn with a breakthrough point.

The Most Under-Used Sudoku Technique