or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)
Theme: Five (originally on the US round for the 2016 WPF Puzzle Grand Prix)
Author/Opus: This is the 244th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Cave rules.
Answer String: Enter the length in cells of each of the cave segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.
Time Standards (highlight to view): Grandmaster = 5:00, Master = 7:30, Expert = 15:00