(this puzzle is a continuation of the theme in this Thermo-Sudoku)
Author/Opus: This is the 55th puzzle from our contributing puzzlemaster John Bulten.
Rules: Standard Arrow Sudoku rules.
Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 7:00, Master = 12:30, Expert = 25:00