Theme: Clue Symmetry and Logic
Author/Opus: This is the 32nd puzzle from our contributing puzzlemaster Tom Collyer.
Rules: Standard Sudoku rules. Additionally, if a grey circle is given between two adjacent cells, then the two numbers in those cells must be consecutive. (Note: not all grey circles are given; adjacent cells without a circle may contain either consecutive numbers or nonconsecutive numbers.)
Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 7th row from left to right.
Time Standards (highlight to view): Grandmaster = 8:15, Master = 11:45, Expert = 23:30