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Theme: 258

Author/Opus: This is the 163rd puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Sudoku rules. The outside clues are digits that must be in the 2nd, 5th, or 8th cells in the respective row/column.

Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 6th column from top to bottom.

Time Standards (highlight to view): Grandmaster = 5:45, Master = 9:45, Expert = 19:30

Note: Follow this link for other less common variations of Sudoku and this link for classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on.