Roman Lockout
(Published on 19. February 2022, 23:16 by Jay Dyer)
Inspired by Phistomefel's recent Roman Whispers puzzle. I thought it would be fun to look for other constraints that might have interesting interactions with the anti-XV rule.
Rules
- Sudoku: Normal sudoku rules apply
- Lockout lines: Digits on a line cannot be equal to or between the digits on the end diamonds, which must differ by at least 4.
- Anti-XV: No two adjacent digits may sum to 5 or 10.
Solution code: Columns 1 and 2
Comments
on 3. September 2024, 04:59 by psams
Outstanding puzzle. I really enjoyed solving this, especially seeing the way that the Anti-XV rule introduced a curious asymmetry in the available options.
on 28. November 2023, 14:43 by GeorgeTheToad2
I watched your spotlight video on Memeristor's channel and heard you say that Roman Lockout Lines was one of your best puzzles so I gave it a go. It was hard but after about an hour of working on the logic in row 7 and boxes 1 and 2 it started to reveal it's secrets in box 7. Wonderful creation and I am surprised some of the good solvers out there have not attempted this puzzle. Hopefully, you will get a few more attempting this puzzle it deserves a bigger audience.
on 16. October 2022, 17:26 by Vebby
An almighty battle, very rewarding to solve!
on 23. September 2022, 05:41 by wooferzfg
A really fun and rewarding puzzle! There was some neat logic throughout.
on 30. June 2022, 08:34 by Phistomefel
It is too bad that this wonderful puzzle completely escaped my attention until now. It is intricately set and offers some very cool logic to discover. Thanks a lot for setting this gem of a puzzle, Jay Dyer!
on 28. June 2022, 16:39 by SHERAX
2nd One To Solve it!(more than 4months after its release)This Puzzle Is Next Level Hard.
Only once you understand all logic you can solve it but you need to invent new logic to conquer this one.
The only reason I solved this was that I saw it was solved before (once) and so it is solvable. And yes again next Level puzzle!!!
Rules clarified:
Anti-XV: No two adjacent digits may sum to 5 or 10.
Adjecent means orthogonally
This is minimum Phistomefel level puzzle probably far beyond …i wonder if Simon (CTC) can solve this….
