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Author/Opus: This is the 203rd puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard LITS rules.
Answer String: Enter the length in cells of each of the shaded segments from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.
Time Standards (highlight to view): Grandmaster = 0:40, Master = 1:20, Expert = 2:40