Sudoku. Tutorial #26 The power of 3X3 to eliminate small numbers.
Sudoku, Tutorial #34 Managaing small numbers to solve very hard puzzles.
Sudoku. Tutorial #27. Many ways to eliminate small numbers.
Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.
Tutorial #68 Strong and Weak links and Open Ended Chains, which enable you to remove small numbers.
Tutorial #82 Sudoku. An Unbelievable Technique. (locked little numbers)
Sudoku Tutorial #29 Eliminating small numbers.
Sudoku. Tutorial #31 How to avoid putting too many small numbers. More tricks.
Sudoku falling into an unusual kind of line.
Tutorial #33 Managing small numbers
X-Wings and the Rectangle Rule for Solving Medium to Hard Sudoku Puzzles
A Sudoku With Only 4 Given Digits?!
A Killer Sudoku With No Numbers At All?!
How to play Sudoku
Tutorial #40 A must know technique. NOT a puzzle.
The Sudoku With No Digits. At All.
The Sudoku With Only 10 Given Digits
Sudoku tutorial #86 Only 17 numbers to start!
Lesson 5: Learn Sudoku. The Effect of 3 Numbers in a row or column within a Block
In which I solve an EXTREME SUDOKU for Twitter