Castle Wall (Antisymmetry) by Serkan Yürekli
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 232nd puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Standard Castle Wall rules, but none of the clue colors are given. For each symmetric pair of clue cells, one cell is white and the other cell is black.
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 = 2:45, Master = 5:00, Expert = 10:00
Solution: PDF
Note: Follow this link for more Castle Wall puzzles. If you are new to this puzzle type, here are our easiest Castle Wall puzzles to get started on. More Castle Wall puzzles can be found in our beginner-friendly collection Intro to GMPuzzles as well as the larger collection Castle Wall, both by Serkan Yürekli.
What is a symmetric pair?
Most of our puzzles have rotational symmetry and this theme refers to the clues that are paired with 180 degree rotation of the grid.
Neat puzzle. I did not expect to like it, because the rules sounded like they would lead to a super difficult puzzle. But as soon as I ran into [rot13]”Gurfr gjb ner gur fnzr pbybe, fb gurfr gjb ner gur fnzr pbybe.” I liked it.