Thermo-Sudoku by Serkan Yürekli [Bonus]
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Theme: 3×3 Different Regions
Author/Opus: This is the 207th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Standard Thermo-Sudoku rules.
Answer String: Enter the 9th row from left to right, followed by a comma, followed by the 9th column from top to bottom.
Time Standards (highlight to view): Grandmaster = 4:15, Master = 5:30, Expert = 11:00
Note: Follow this link for more Thermo-Sudoku puzzles. If you are new to this puzzle type, here are our easiest Thermo-Sudoku to get started on.