Theme: Sudoku GP Round 7 (this puzzle continues a hidden theme present throughout Prasanna’s Sudoku Grand Prix set)
Author/Opus: This is the 41st puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Standard Sudoku rules. Additionally, all cells having the same digit(s) more than once as orthogonal neighbors are shaded. (If a cell is not shaded, it cannot have any digits repeated as orthogonal neighbors). Or see this example image.
Answer String: Enter the 8th row from left to right, followed by a comma, followed by the 2nd column from top to bottom.
Time Standards (highlight to view): Grandmaster = 9:00, Master = 17:30, Expert = 35:00