Castle Wall by Palmer Mebane

Castle Wall by Palmer Mebane

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or solve online (using our beta test of Penpa-Edit tools in linex mode where left click+drag draws lines and right click marks X’s)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 33rd puzzle from our contributing puzzlemaster Palmer Mebane.

Rules: Standard Castle Wall rules.

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 = 11:00, Master = 20:00, Expert = 40:00

Solution: PDF; a solution video is available here.

Note: This is our first week of Castle Wall puzzles. You can find other Castle Walls from their inventor Palmer Mebane here.

  • Carl W says:

    Phew! What a great, (and tough), puzzle.

    I spent about an hour on it before finding I had broken it.

    On the second attempt, I actually understand the breakin better, (and the logical deduction that is repeated over and over throughout the solve). So things went more smoothly, but it was still quite some time until I finished it all.

    As always, another excellent puzzle from gmpuzzles (and Palmer), and I learned a lot while solving this one. Thanks!

  • Jonah says:

    Yeah, wow. Best puzzle I’ve seen in a while. It took me a long time to get the trick, but even after I did it was a really satisfying solve.

  • James McGowan says:

    Excellent puzzle Palmer, thank you!

  • Ivan says:

    Got most of the way through this and my browser crashed. hoping the second time around goes a bit faster

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