Sudoku Primer 85 - solving harder diabolical puzzle using what-if strategy (sudoku extreme tips)
Sudoku Tutorial #85 Solving a DIABOLICAL PUZZLE.
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Sudoku Primer 169 - Sudoku Techniques to Make a Hard Puzzle Easy
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Sudoku Primer 183 - Using Four Sudoku Tricks to Find One Number
Sudoku Primer 73 - the wall guarantee - solving a medium puzzle (sudoku skills)
Sudoku Primer 323 - Techniques Make a Hard Puzzle Easier
Sudoku Primer 86 - Solving a diabolical puzzle (pseudo-quiz) (sudoku tutorial, sudoku rules)
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Sudoku Primer 87 - more advanced tips for an easy puzzle (sudoku beginner)
Sudoku tutorial #89 Remote matching pairs
ALL SINGLE CELL SOLVING METHODS! Sudoku Beginner Tutorial #4
A DIABOLICAL puzzle by sudokuexchange.com
Sudoku Primer 93 - thought process solving a puzzle (easy puzzle vol. 106 sudoku beginner)
SudokuPrimer 20 two techniques to help solve a hard puzzle
SudokuPrimer 47 - tips to master a diabolical puzzle - Sudoku To Go vol 102
Sudoku Primer 84 - 'answer sheet' to the pop-quiz in previous video (sudoku hard level)
Sudoku Primer 315 - Twins in Containers - and How to Spot Them
