[PAC] Castle Wall (Knapp-Daneben)
(Published on 14. September 2025, 23:41 by The Book Wyrm)
This puzzle was created for the first round of the Puzzle Agent Championship (PAC) setting tournament. The prompt was to create a puzzle that uses the knapp-daneben restriction.
Rules:
- Castle Wall: Draw a loop that moves orthogonally through some empty cells.
White clued cells must be inside the loop, black clued cells must be outside the loop.
The value of a number clue gives the number of borders crossed by line segments in the indicated direction. - Knapp-daneben: The value of a clue is one more or one less than the number given.
Penpa link: Click Here
Solution code: For each row of the grid, the number of turns in that row.
Comments
on 8. January 2026, 14:12 by Mark Sweep
That was simply gorgeous!
on 26. September 2025, 10:40 by filuta
What a thematic puzzle!
on 15. September 2025, 19:11 by Myxo
Amazing puzzle!
on 15. September 2025, 15:57 by MaizeGator
I really loved this puzzle. I was utterly stumped for a while at the beginning but in retrospect I just hadn't understood the (very well-signaled) theme.
on 15. September 2025, 11:59 by Niverio
Very intricate setting!
on 15. September 2025, 00:55 by Silverbyte
Absolutely beautiful. At first you don't know where to start but then beautiful patterns start to emerge and somehow emerge at a very elegant solution
on 15. September 2025, 00:48 by Agent
Very clever break-in and great use of the Knapp-Daneben variant!
on 14. September 2025, 23:44 by damasosos92
Beautiful grid and beautiful puzzle.
