SudokuPrimer 39 - always look for twins, triplets, etc.
Sudoku Tutorial #39 Spotting patterns using little numbers.
SudokuPrimer 8 - Twins, Triplets and other relationships
Sudoku - expert 37 38 39
SudokuPrimer 5 - Double Row/column elimination
SudokuPrimer 38 - Creator introduction - how I got started doing Sudoku videos
SudokuPrimer 59 - rotten to the core - tricks solving a hard puzzle
SudokuPrimer 47 - tips to master a diabolical puzzle - Sudoku To Go vol 102
How Cracking The Cryptic Solved A "VICIOUS" Sudoku - Sudoku Analysis 39
SudokuPrimer 44 - tips for solving an easy puzzle - Sudoku To Go vol 102
Sudoku Primer 296 - Lining Up Twins and Triplets to Find Elusive Numbers
Solving Sudoku Puzzle #39
Sudoku Primer 79 - solving the 'hardest Sudoku we've seen in a newspaper' (sudoku extreme)
SudokuPrimer 24 techniques for mastering a hard puzzle - Sudoku To Go vol 100
SudokuPrimer 42 - offset and corner sidewalk patterns
SudokuPrimer 50 - pseudo-quiz - why does that number go there?
Sudoku Primer 329 - Finding Subtle Twins Can Be Hard
SudokuPrimer 1 - Row completion & finding twins
Sudoku - easy 37 38 39
Secret To Solving SUDOKU SKYSCRAPERS – SHC #124
