Tutorial #43 The XY Wing Part 1
Tutorial #56. A difficult puzzle solved from beginning to end. Lots to learn.
Lesson 5: Learn Sudoku. The Effect of 3 Numbers in a row or column within a Block
Learn to solve sudoku. Lesson 3. The matching pair. 2 empty cells.
Sudoku Tutorial #62. How to spot an X wing using rows, and then knowing what to do!
Sudoku. Lesson 4 Very important hints for solving sudoku puzzles.
Lesson 7. Learn sudoku. The cross /meet technique.
Lesson 1 Learn sudoku. How to solve sudoku for beginners. Horizontal blocks using TMB.
Lesson 10. Sudoku 3 empty cells in a line within a block
Tutorial 53 Spotting a 3X3. A powerful technique in sudoku puzzles.
Sudoku Tutorial #98 The power of triplets and matching pairs.
Lesson 12 Sudoku The "Outside the puzzle technique"
Tutorial #40 A must know technique. NOT a puzzle.
Sudoku . Lesson 8 The power of the matching pair.
Lesson 6. Sudoku Rule of exclusion. 2 empty cells hint for small numbers.