19:19

Sudoku Tutorial #95. Keep it in your head!

50:47

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

40:01

Sudoku Tutorial #97 a puzzle for all levels. Includes finned X wing.

45:15

Tutorial #81 Elimination Heaven. A neat trick. You can do it. Locked Little Numbers.

37:08

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

36:09

Tutorial 58. Hard sudoku puzzle with lots of techniques.

35:18

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

35:35

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