Twin Rooms (Chaos Construction)
(Published on 14. June 2022, 09:00 by Agent)
This is an idea I had for a numbered rooms chaos construction variant. It differs from normal chaos constructions in that digits can repeat in some regions, but only under certain conditions. I hope you will enjoy :)
Rules
- Each row and each column must contain the digits 1 to 9 once each. The grid contains 9 regions which must be determined by the solver. Each region consists of 9 orthogonally connected cells.
- Clues outside the grid are numbered rooms clues. They indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction. Clues with a question mark must be determined by the solver.
- The grid contains some twin cells. Digits in twin cells must appear at least twice in their region, and they are the only repeating digits allowed in any region. All twin cells with the same digit must belong to the same region, and twin cells within that region cannot contain any other digit. It is possible that some regions don't have any twin cells.
- The positions of twin cells are defined by numbered rooms clue. Each numbered rooms clue must point to a twin cell, and each twin cell must be referenced by a numbered rooms clue exactly once.
Because I suspect this ruleset will be a bit counter-intuitive, I also made a 6x6 example puzzle called Twin Roomlets.
Example puzzle: Twin Roomlets
f-puzzles link
SudokuPad (CTC) link
Main puzzle: Twin Rooms
f-puzzles link
SudokuPad (CTC) link
Solution code: Row 9 (left to right) then column 8 (top to bottom)
Comments
on 29. February 2024, 11:06 by Piatato
Very cool!
on 18. January 2024, 18:39 by wullemuus
An amazing beautiful masterpiece!
on 15. November 2023, 22:59 by lerroyy
cool puzzle!
on 3. August 2023, 14:56 by sugardude
A very special geometric ride! Unbelievable!
on 22. February 2023, 19:11 by StephenR
Ha, Agent likes to mess with your head. If you can get through this puzzle without once forgetting that numbers can repeat you're doing well. Thanks!
on 1. January 2023, 04:34 by Christounet
The first region logic is a real treat ! And then, all the rest unfolds very smoothly with just enough surprises along the way to keep the solver on the edge and entertained ! Thanks for this beautiful puzzle !
-- Thanks @Christounet! It always makes me happy to read nice comments, especially as this puzzle holds a special place in my experience as a setter.
on 9. October 2022, 12:45 by Vebby
Super enjoyable! Brilliant idea and execution.
-- Thank you @Vebby! This is by far the puzzle I spent the most time setting, so I'm particularly pleased to hear you enjoyed it.
on 27. August 2022, 17:32 by Agent
Added link to zetamath's live solve.
on 17. July 2022, 00:03 by twobear
Very satisfying solve. Thank you!
-- Congrats on the solve @twobear! I'm glad you enjoyed.
on 17. June 2022, 16:25 by Agent
Clarified the rules following some feedback.
on 17. June 2022, 16:22 by Agent
@Niverio @Bootenks Thank you for such positive feedback!
on 17. June 2022, 16:04 by Niverio
Very unique logic! Absolutely loved that solution path.
on 16. June 2022, 08:37 by Bootenks
What a mind-bending rule-set.
It was a joy to solve it. Cheers to the creator.
on 15. June 2022, 23:31 by Agent
@the_cogito @purpl @AFrayedKnot @polar @marcmees @Jesper @MagnusJosefsson Thank you for solving the puzzle and for the kind comments! I appreciate it. I am especially pleased to read such positive feedback about the originality and enjoyability of this ruleset.
on 15. June 2022, 11:33 by MagnusJosefsson
Beautiful puzzle! Very enjoyable, with some fresh and interesting logic.
on 14. June 2022, 23:25 by Jesper
That was fun and exciting, thanks!
on 14. June 2022, 19:47 by marcmees
very nice. Original logic. Thanks.
on 14. June 2022, 19:35 by polar
Wonderful puzzle with a very original ruleset. Thanks!
on 14. June 2022, 19:11 by AFrayedKnot
Very original and interesting concept. Has some really cool logic and geometry
on 14. June 2022, 16:21 by purpl
Lovely puzzle with a lot of original logic.
on 14. June 2022, 14:45 by the_cogito
Really nice execution on a fun, novel concept, well done Agent!
