Sudoku Primer 93 - thought process solving a puzzle (easy puzzle vol. 106 sudoku beginner)
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Sudoku Primer 82 - pop-quiz solving a diabolical puzzle (sudoku tricks)
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Sudoku Primer 94 - plus pattern (medium puzzle vol. 106 sudoku medium, sudoku tutorial)
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SudokuPrimer 70 - solving an easy puzzle using basic strategies (sudoku for beginners)
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Sudoku Primer 80 - ambiguity rule in a hard puzzle - Sudoku To Go vol 104 (sudoku tips and tricks)
Sudoku Primer 90 - answer sheet to previous video (sudoku game, sudoku rules)
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Sudoku Primer 143 - Answer sheet for video 142
SudokuPrimer 19 tutorial for solving a hard puzzle - Sudoku To Go vol 99
SudokuPrimer 3 - Finding other numbers after finding twins