or solve online (using our beta test of Penpa-Edit tools)
Theme: Four Squares (Originally on 2015 Indian Puzzle Championship)
Author/Opus: This is the 91st puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Standard LITS rules. Also, the letters outside the grid indicate the first tetromino encountered in the corresponding direction. Or see this:
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 = 1:00, Master = 1:30, Expert = 3:00