Cornerstone
(Published on 13. January 2026, 10:27 by Hengist)
I had a simple idea for my first puzzle, but after seeing that Meggen had already executed that same concept, I decided to turn it inside out. Hope you enjoy!
Solve with SudokuPad
Rules:
Normal Sudoku rules apply.
Killer: Digits in a cage do not repeat and sum to the clue in the top left.
German Whispers: Adjacent digits along a green line must have a difference of at least 5.
Renban: Digits along a magenta line form a set of consecutive non-repeating digits in any order.
Solution code: Row 6
Comments
on 16. January 2026, 04:24 by antiknight
Nice!
on 15. January 2026, 17:26 by macaco3001
Lovely puzzle! I don't think the leftmost renban is needed, at least I'm fairly sure I did not use it at any point during the solve
on 15. January 2026, 14:49 by dumediat
This was a lovely puzzle! Really nice use of geometry throughout the solve. I'm surprised so many people posted public spoilers for the uninitiated (maybe you want to convert those to hidden comments?), but I agree that this puzzle is much easier if that technique is known.
on 15. January 2026, 10:23 by sparkymanu
Wow, again a first puzzle that doesn't feel as one at all, very nicely set ! I can't imagine solving it without the ring, so 2* seems appropriate. I personally discovered the ring through CTC way before being able to solve 2* puzzles by myself so I don't know how niche this information is.
Anyway I can't wait for your next puzzles !
on 13. January 2026, 21:02 by Aronana
Defo 2* Difficulty, If you know about the ring. Otherwise I don't see somebody rediscovering it from first principles. Phenomenal for a first puzzle! I see you crafting many more fun ones :)
on 13. January 2026, 19:05 by VitP
definitely an "experts only" puzzle, hence level 3 at least
on 13. January 2026, 18:28 by Caconym
Really enjoyable puzzle. I'd rate this 3* difficulty. If you know about the ring, its much easier but having to employ phistomofel alone should warrant 3*
on 13. January 2026, 14:22 by dingdongeu
Lovely puzzle, for whatever reason I struggled more than I should have! I saw a comment about using Phistomefel's ring after I had finished and didn't think to employ it, so perhaps that's what I missed for an easier solve.
on 13. January 2026, 14:09 by Ragna
What a beautiful first puzzle here in LMG! Thank you, hengist. :-)
on 13. January 2026, 13:52 by Platinum
Really enjoyable great use of the phistomefel ring
on 13. January 2026, 10:42 by Hengist
Added introductory paragraph.
