Dutch Flat Mates: Schrödinger's Flatmate
(Published on 1. January 2025, 00:00 by ViKingPrime)
PUZZLE:
RULES:
"Normal" SCHRÖDINGER rules apply
(i.e. place the digits 0-9 once each in every row, column and box; two of the digits will have to share a Schrödinger cell; each row, column and box contains exactly one Schrödinger cell).
Every Schrödinger cell is also a Dutch Flat Mate (DFM) cell, occupied by the digit 5 and either a 1 or 9.
The digits within a KILLER cage must sum to the number in the top-left corner (if given) and cannot repeat.
INTRODUCTION:
Happy New Year!
It's truly an honour to be invited to set for one of the most prestigious (and what has to be the longest running) sudoku series of all. What else could I do but sully that fine reputation with the inclusion of Schrödinger cells?
If this is your first time encountering the Dutch Flat Mate constraint, you may want to explore the back catalogue before tackling this one, as this twists the constraint into something a little different. For those of you who may be hesitant about 10-in-9 puzzles, the inclusion of the Dutch Flat Mate cell adds a bit of freshness while also removing some of the bite out of the logic involved.
Have fun!
Solution code: All digits within Schrödinger cells, lowest digit first, top-row to bottom-row.
Comments
on 30. January 2025, 17:59 by THef of Time
Wonderful flatmates and Schrodinger combo. Those pesky 0s still managed to trip me up a couple times though in my sums!
on 19. January 2025, 18:31 by jakestilesowen
Interesting take on DFM. Very aesthetically pleasing puzzle.
on 13. January 2025, 12:24 by Crusader175
Very nice!
on 3. January 2025, 08:33 by da-hans
My first puzzle solve with Schrödinger cells. Had to rewind a few times but finally got through. Great addition to the series.
on 2. January 2025, 12:37 by argl
On the harder side of 3 stars for me. Really enjoyed it, thank you for setting and sharing!
on 1. January 2025, 21:09 by Paquet Voleur
Schrodinger cells both attract and distract me. I'm not one to retract from subtracting time in my day to extract their exact values.
Thanks for another lovely puzzle!
on 1. January 2025, 14:44 by sujoyku
I enjoyed this new take on the DFM very much. Thank you for setting and sharing this wonderful puzzle, ViKingPrime! Schrödinger always intimidates me a bit, but I found the puzzle to be surprisingly approachable.
on 1. January 2025, 14:08 by ViKingPrime
Updated difficulty (per Flinty's gentle admonishments).
on 1. January 2025, 13:02 by Flinty
Only took me 60 minutes to solve this time, although it is my second time solving - haha - I can't believe this has been in the Flat Mate queue since October! Crazy stuff.
3/5 is a bold claim VP! I've gone for 4/5 on difficulty (and obviously 5/5 for the puzzle). A standout addition to the series. Thank you so much. :)
on 1. January 2025, 06:12 by NEWS
The first masterpiece solved by me in this new year of 2025!
on 1. January 2025, 05:23 by kdkirby
Ooh, I don't know if I've seen many other Schrödinger puzzles with constraints on what the Schrödinger cells can be. This was interesting and fun, thanks!
