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Author/Opus: This is the 223rd puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Yajilin rules.
Answer String: Enter the length in cells of the horizontal loop segments from left to right in the marked rows, starting at the top. If the loop only has vertical segments in the marked row, enter 0. Separate each row’s entry with a comma.
Time Standards (highlight to view): Grandmaster = 2:00, Master = 5:15, Expert = 10:30