Masyu (Battleships) by Walker Anderson

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Masyu (Battleships) by Walker Anderson


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 ship placement mode)

Theme: Half and Half

Author/Opus: This is the 4th puzzle from guest contributor Walker Anderson.

Rules: Combination of Masyu and Battleships rules. Start with standard Masyu rules. All empty cells not occupied by the Masyu loop will belong to the fleet of ships given below the grid. The whole fleet must be placed in the grid; ships cannot touch each other, not even diagonally.

Answer String: Enter the length in cells of the horizontal loop segments from left to right in the marked rows, starting at the top. If the loop only has vertical segments in the marked row, enter 0. Separate each row’s entry with a comma.

Time Standards (highlight to view): Grandmaster = 2:30, Master = 4:30, Expert = 9:00

Solution: PDF

Note: Follow this link for other variations of Masyu and this link for classic Masyu. Follow this link for more variations on Battleships and this link for classic Battleships.

  • Carl W says:

    A very interesting puzzle. This particular combination of puzzle types brought some interesting tactics into play, (perhaps some Yajilin-like thinking?).

    The second half was a lot harder than the first. While I did get a solution, and the ending did feel very constrained, I also didn’t fully prove that my solution was unique.

  • skynet says:


  • skynet says:

    The end was more like finish the puzzle and tweak rather than proceeding logically.I enjoyed solving this combo puzzle !

  • Freddie Hand says:

    Nice conflation of genres. The logic on the left was pretty easy, and to finish off I just twiddled with the threes until they fitted.

  • Chandrachud says:

    Nice puzzle … had fun solving it.

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