Oops! All Twins
(Published on 9. August 2026, 12:08 by juggler)
FULL SCHRÖDINGER - Place two digits from 1-8 in every cell so that each digit appears exactly once in every row, column, and 2x2 box. A cell can take the value of either of its digits.
A number on a diamond is a sum of the cells it separates.
A number outside a row / column is a sum of that row or column.
Solution code: Cells in row 1 (8 digits)
Comments
on 10. August 2026, 19:26 by highonlife
Really Nice Puzzle. This is just above 3* simply because i couldnt find a good notation method for it. But unique!!
on 9. August 2026, 23:24 by deltameth
What a lovely puzzle. It's all about the vibe. At first you struggle with notation, but once you felt the vibe, it unfolds pretty easily.
on 9. August 2026, 22:35 by Prof.Dori
Really enjoyed this puzzle is quite unique and very refreshing logic which I liked a lot!
on 9. August 2026, 19:57 by juggler
(UI improvements)
on 9. August 2026, 17:46 by jennyaa
It would be much more convenient to do pencilmarks if each cell of the puzzle was represented by a pair of sudokupad cells. It would also fix the solution check and the timer.
---
juggler: ...okay, you're right.
---
jennyaa: If only we could get Sven to implement schrödinger cells, then we wouldn't need to choose between user-friendliness and aesthetics. But alas... :(
on 9. August 2026, 15:05 by SennyK
Great puzzle! :-)
on 9. August 2026, 13:28 by PrissyP
I absolutely enjoyed this. Very nice logic throughout
on 9. August 2026, 13:25 by ViKingPrime
What a gem. Rarely do you see the exact perfect execution on a novel concept, but it happens so much more often with juggler doing the setting.
