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Author/Opus: This is the 42nd puzzle from our contributing puzzlemaster Tom Collyer.
Rules: Standard Sudoku rules.
Answer String: Enter the 6th row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 2:30, Master = 3:30, Expert = 7:00
Note: Follow this link for other classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on. More classic Sudoku puzzles can be found in The Art of Sudoku and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.