Theme: Countdown to …
Author/Opus: This is the 1st puzzle from our new contributing puzzlemaster who will be identified later this week. [ETA: The author has been revealed as Prasanna Seshadri.]
Answer String: Enter the length in cells of each of the segments labeled with numbers 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 = 2:15, Master = 3:30, Expert = 7:00