Tutorial #68 Strong and Weak links and Open Ended Chains, which enable you to remove small numbers.
29:51
Sudoku tutorial #69. Amazing puzzle with lots to learn with a breakthrough point.
50:47
Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.
13:55
dxSudoku #41 X-Chain Puzzle Solving Technique
35:35
Tutorial #56. A difficult puzzle solved from beginning to end. Lots to learn.
29:18
Tutorial #100 A SPECIAL GUEST.
37:08
Sudoku Tutorial #62. How to spot an X wing using rows, and then knowing what to do!
45:15
Tutorial #81 Elimination Heaven. A neat trick. You can do it. Locked Little Numbers.
31:15