The Keep
(Published on 31. January 2025, 15:00 by Myxo)
The idea for this puzzle came from Palfly Kampling. I was very happy to find a grid that didn't require any given numbers to resolve - in fact, this might be the only one up to symmetries. I am estimating the difficulty as "hard", but it might be much easier for solvers who are already familiar with 6x6 Antiknight-Sudokus.
Rules:
Sudoku: Fill the outlined grid with the digits 1-6 such that no digit repeats in a row, column or region.
Numbered Rooms: Fill all circles with digits from 1-6. A digit N in a circle indicates that the Xth cell in that row or column, viewed from the direction of the clue, contains the digit N, where X is the digit in the cell next to the clue.
Antiknight: Digits placed a chess knight's move apart cannot be the same. (This includes digits in circles.)
Solution code: column 4
Comments
on 5. February 2025, 09:04 by Crusader175
Impressive!
on 2. February 2025, 18:13 by Franjo
You found a tricky treasure! Thank you very much for sharing.
on 2. February 2025, 08:38 by Fisherman
I was stuck until I got gravity assist from CTC. Very dense and beautiful sudoku.
Thanks Mark. Triple thanks Myxo.
on 1. February 2025, 23:05 by Lorena
This may be the most challenging 6x6 I’ve ever solved, but that’s partially because I had never encountered numbered rooms before, and I kept getting my numbers mixed up. Still… I solved it, but I couldn’t for the life of me say how, exactly. Every digit felt like a win! I also learned a few things that I didn’t know before and, for that, I thank you.
on 31. January 2025, 18:08 by Snookerfan
Great puzzle! Lovely solvepath, thank you
on 31. January 2025, 16:30 by ccotreau
Fun puzzle with good logic. Tricky in spots for sure but once I remembered the trick with anti-knight in a 6x6, it made things a touch easier
