4×4×4
(Eingestellt am 16. Januar 2026, 00:31 Uhr von juggler)
In each quadrant, normal 4x4 Sudoku rules apply, i.e. place the digits 1-4 once each in every row, column, and box.
Red shapes always sum to one of four possible sums, and these four sums appear once each in every row, column, and box of the large 4x4 Sudoku.
(Example)
Lösungscode: Row 1 (8 digits)
Kommentare
Heute, 04:19 Uhr von ScatterBrain
It's a great idea. Hard to explain, but once you understand it, it's fun!
Thanks.
Gestern, 19:27 Uhr von juggler
(Example image)
Gestern, 19:09 Uhr von jez9999
Yeah, I don't understand the rules on this either. Does "box of the large 4x4 Sudoku" mean a small box (which is redundant) or a quadrant? Also, does "appearing in the same row" count as any digit of a box appearing in the same row/column, or do all the digits of the two boxes have to be in the same row/column to violate the rule?
Update: OK... figured it out anyway. The larger sudoku's four unique cell values are that of the red boxes.
Gestern, 11:46 Uhr von GandalfLeRouge
Very cool puzzle! I give it two stars though because the rule set is a little complicated to understand, with the quadrant and everything (though it might be because i'm not a native english speaker)
Thanks juggler!
am 19. Januar 2026, 21:38 Uhr von Snaques
I'd love to give this a go, but the rules are too confusing and I don't want to start guessing.
Is a "large 4x4 Sudoku" just one quadrant?
Is "box" one 2x2 region within a quadrant?
I assume they can repeat in the entire grid as there are only four distinct values.
---
juggler: each 2x2 box of a small 4x4 grid acts as a "cell" for the large 4x4 grid. The value of that cell is the sum of its red shape. I've added an example image.
am 17. Januar 2026, 18:58 Uhr von chubnatty
Lovely breakin, and such a dopamine hit when I finally saw the last step that unraveled everything.
am 17. Januar 2026, 12:02 Uhr von TeddieMilo
Very interesting.. but it took me a while to understand the rules with some experiments.. very nice, tq.
am 16. Januar 2026, 22:36 Uhr von firespire
Very interesting.
am 16. Januar 2026, 18:40 Uhr von blackjackfitz
Huzzah!
am 16. Januar 2026, 17:14 Uhr von HeyItsErin
Trickier than I expected but very fun!
am 16. Januar 2026, 01:42 Uhr von dzamie
Surprisingly nontrivial, and a lot of fun!
am 16. Januar 2026, 01:26 Uhr von Atticus837
What a lovely idea! Not difficult, but very enjoyable to think through.
