SudokuPrimer 12 tutorial for solving an entire hard puzzle - Sudoku To Go vol 98
SudokuPrimer 20 two techniques to help solve a hard puzzle
SudokuPrimer 24 techniques for mastering a hard puzzle - Sudoku To Go vol 100
SudokuPrimer 10 Solving an entire 'Diabolical' puzzle
Sudoku Primer 352 - Just a Tough Puzzle
SudokuPrimer 27 - lotsa twins, tips for solving a hard puzzle
SudokuPrimer 46 - tips for solving a hard puzzle - Sudoku To Go vol 102
SudokuPrimer 52 - tricks to solving a hard puzzle - steps to take
SudokuPrimer 13 tutorial for solving an entire easy puzzle - Sudoku To Go vol 98
SudokuPrimer 18 tutorial for solving a diabolical puzzle - Sudoku To Go vol 99
SudokuPrimer 65 - solving a hard puzzle - Sudoku To Go vol 103
Tutorial #50 Solving a hard puzzle from the beginning to the end
SudokuPrimer 19 tutorial for solving a hard puzzle - Sudoku To Go vol 99
Sudoku Primer 281 - How to Solve “The Mole 1” Without Pencil Marks – Sudoku Primer Collaboration
SudokuPrimer 26 Quadruplets & solving individual cells - Sudoku To Go vol 100
SudokuPrimer 60 - solving an extreme diabolical puzzle
SudokuPrimer 14 tutorial for solving an entire medium puzzle - Sudoku To Go vol 98
Sudoku Primer 211 - Dell Challenger Puzzle Solved Using Four Patterns
Sudoku Primer 334 - Two Hidden Corner Patterns Make This Puzzle Easy
SudokuPrimer 7 - Ghost numbers
