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or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku entry modes and a shading mode to mark off clues.)
Theme: 69 Slices of Pi
Author/Opus: This is the 37th puzzle from our contributing puzzlemaster John Bulten.
Rules: Standard Outside Sudoku rules. (Some digit clues are repeated but these behave no differently than single clues; 0’s can be ignored.)
Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 5th column from top to bottom.
Time Standards (highlight to view): Grandmaster = 2:45, Master = 3:30, Expert = 7:00