From the Foxger’s Den #74: Masyu (Battleships)
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between linex mode where left click+drag draws lines and right click marks X’s and a shading mode.)
Theme: Logic
Rules: Variation on Masyu and Battleships.
Normal Masyu rules. Also, all cells not used by the loop must contain ships from the indicated Battleships fleet, and all ships must be placed. Ships cannot touch each other, even diagonally. All of the given clues are Masyu clues (and none are submarines).
Answer String: For each row from top to bottom, enter the number of the first column from the left where a ship segment appears. If the row is empty, enter 0. Enter these numbers as a single string with no separators. (This is normal Battleships answer entry.)
Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:30, Expert = 7:00
Solution: PDF
Fun, though a misreading of the instructions made this harder for me — I read “not in the loop” as “not inside the loop”, derp. “Not passed through by the loop” might be less potentially ambiguous.
I’ve gone with “not used by the loop” as a short form of that. Now to check the other instance of this kind of thing (Yajilin + Battleships) in our archives.