Pick a Room, Any Room
(Published on 14. December 2025, 09:53 by juggler)
Pick any 2-cell domino inside the grid that crosses a box border, and fill it with two given digits of your choosing that don't sum to 5. Then solve the resulting puzzle.
- Normal 4x4 Sudoku rules apply within the grid.
- Numbered Rooms: A digit outside the grid places itself N steps into the grid, where N is the first digit in that direction.
- Digits can't repeat in a cage.
Solution code: The digit that would go on a Numbered Rooms clue pointing diagonally into the grid from the top left corner.
Comments
on 23. December 2025, 17:08 by ElenaMonteille
ok... this is new... and nice! loved it
on 19. December 2025, 15:47 by varbrad
Weird!
on 16. December 2025, 19:01 by Suxamethonium
This is bizarre but I loved it
on 15. December 2025, 23:25 by Atticus837
Oh... eugh... what?? That's weird... I can see how it works, it's quite clever... but... it feels wrong somehow. Well done!
on 15. December 2025, 11:03 by davidemsa
What? How does this even work? And it somehow always leads to the same solution code!
on 14. December 2025, 22:12 by macintux
We need a new rating: “fascinating”
on 14. December 2025, 21:00 by Exigus
That has some very neat properties. Thanks!
on 14. December 2025, 18:02 by Playmaker6174
ex dee
on 14. December 2025, 17:48 by konklone
...
on 14. December 2025, 15:03 by GeorgeTheToad2
My chosen grid works from any corner? Fascinating.
on 14. December 2025, 14:51 by RailMan
That is brilliant and fascinating. Thank you.
on 14. December 2025, 14:12 by eladv
This one feels like it was more fun for the setter to set than for the solver to solve :). There must be some moon math on why this works, but I'm failing to see it.
on 14. December 2025, 10:41 by Laake
Blimey.
on 14. December 2025, 10:21 by h5663454
Uh… huh? ? ?
