Chaos Construction: Broiled Doppelganger (9x9)
(Eingestellt am 15. Februar 2025, 13:23 Uhr von bodemeister)
Links including tracking cells:
| 4x4 puzzle | LMD Link | CTC Link |
| 6x6 puzzle | LMD Link | CTC Link |
| 9x9 puzzle | LMD Link | CTC Link |
Rules:
- Chaos Construction: Divide the main grid into nine nonoverlapping regions such that each region is a set of nine orthogonally-connected cells.
- Doppelganger: Place the digits 0-9 into the square grid such that digits do not repeat in each row, column, and region. Digit 0 appears in every row, column, and region, but each other digit is missing in exactly one row, one column, and one region. For each 0, the digit missing in that 0's row, column, and region must be three different numbers.
- T-lines: Grey lines are called T-lines and have the following properties:
1) Digits strictly increase along the line from one end to the other, with the direction of increase to be determined by the solver.
2) No T-line can visit a region exactly once. For example, if a region contributes digits 1, 3, and 6 to a line, then there is a different region contributing at least one digit between 1 and 6 to the line. - Grey circles: There is an independent, invisible, 4-cell T-line through the four cells surrounding each grey circle. Invisible T-lines may share cells with visible T-lines.
Lösungscode: The digit missing in each 0's region, beginning with the 0 in the top row and moving downwards.
Kommentare
am 29. Mai 2025, 06:41 Uhr von Kafkapharnaum
It is done! But wow, what a journey – this is surely in the top 3 of the hardest puzzles I've ever solved, with Samish's Tiger's Jaw and Sktx's There is Still Life in my Sandwich. After all that time since my first attempt with my faulty interpretation of the invisible thermo rule, I had forgotten absolutely everything and had to redo it from scratch, early goodliffing and all, and for a little while, I thought to myself, hey, it's really not too hard!...
Ha, did I pay for that remark, as soon enough that thing started fighting absolutely relentlessly for every cell, almost all the way to the end! But massive feeling of accomplishment now that it's done of course, so thank you for that adventure, and congrats on that insane creation! :O
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Wow thank you so much for solving this, for inspiring each of my doppelganger puzzles, and for helping with testing! I definitely could not have set this without first solving a myriad of your doppelganger puzzles including Cosmogony. Happy to hear my puzzle was able to make you work a little, and a little flattered that it's top 3 difficulty for you. It was top 1 difficulty for me to set. xD
am 19. Februar 2025, 10:01 Uhr von bodemeister
Edited the rules for clarity
am 15. Februar 2025, 23:16 Uhr von askaksaksask
The previous puzzles i found to be mandatory. Wow, this is tricky! A very satisfying solve. There are so many cool logical steps here, along with some world class irregular. The T line logic is, in my opinion, the standout, with a particular nod to the break-in and the SW corner. Very cool, very very fun. Thank you!
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Thanks and your comment and congratulations for solving this monster! You are spot on about the grey circle T-line. It's the MVP for sure. If you're interested, I think you'll enjoy my Phistomefel ring doppelganger.
