or solve online (using our beta test of Penpa-Edit tools)
Theme: One, Two, Three
Author/Opus: This is the 51st puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Standard Cross the Streams rules.
Answer String: Enter the length in cells of each of the black segments from left to right/top to bottom for the marked rows/columns, going in order from A to B to C to D and separating each entry with a comma.
Time Standards (highlight to view): Grandmaster = 2:45, Master = 4:00, Expert = 8:00.