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Theme: Dominoes

Author/Opus: This is the 230th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Sudoku rules.

Answer String: Enter the 2nd column from top to bottom, followed by a comma, followed by the 5th column from top to bottom.

Time Standards (highlight to view): Grandmaster = 4:30, Master = 7:30, Expert = 15:00

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, The Art of Sudoku 2 and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.