Logic Masters Deutschland e.V.

Quad Corner - Entropy

(Published on 26. March 2026, 18:17 by SirMoose)

Quad Corner - Entropy
by Sir Moose

Normal sudoku rules apply.

Quadruples: Digits in the white circle must appear in at least one of the four surrounding cells.

Killer Cages: Digits in cages cannot repeat and sum to the number given.

Entropy Rows: Every 3 consecutive cells along each row must contain a low digit (1,2,3), middle digit (4,5,6) and high digit (7,8,9).

Link on Sudokupad

Solution code: Row 1

Last changed on on 26. March 2026, 19:11

Solved by thomamas, salientropy, Blummy, TeamSchmidt, forsen, The Bard, dzamie, dickey, gdc, Noa, SKORP17, ademjaz, jeffrey.l.byrd19, johnreid, Fisherman, Mathemagier, Wyrdsister, tjmas, wjdrumm, pmatos, ... Frank Puzzles, DarkPaladin, Supertaster, Roberto, stafen, Baconator, NeroChaos, CSStead, 0203017, BlackApolloX, Raistlen, Blackophelia, spamus, Docbes, mbumbee, roscommon, Randi <3, Selsted
Full list

Comments

Last changed on 31. March 2026, 16:50

on 29. March 2026, 06:31 by jhow25
I got it, but am I missing something? That seemed much harder than a 1 star - more like a 3 star.

--

I think it all comes down to how familiar one is to the global constraint. If you know some tricks it is easier. I thought it was a 2* myself. -SirMoose.

on 27. March 2026, 17:53 by awwkaw
That's a very fun constraint, thanks for the puzzle 8-)

on 27. March 2026, 12:53 by botteur
Took me way too long to see the beautiful break-in. It was smooth sailing afterwards

on 27. March 2026, 12:15 by anothermember
Satisfying break-in, a little tricky.

on 27. March 2026, 10:08 by faltenin
Really nice break in. Good job!

on 27. March 2026, 09:23 by Jen118266
Very nice. Thank you

on 26. March 2026, 21:43 by jeffrey.l.byrd19
Very fun puzzle. I especially love the way the cages in row 5 interact.

on 26. March 2026, 20:51 by ademjaz
smooth!

on 26. March 2026, 19:11 by SirMoose
Forgot solution code rule.

Sorry!

Last changed on 26. March 2026, 20:08

on 26. March 2026, 19:05 by thomamas
Would be helpful to specify the solution code, which appears to be the first row?

--
Thanks for pointing it out. Sorry!

Difficulty:1
Rating:95 %
Solved:213 times
Observed:2 times
ID:000S1X

Enter solution

Solution code:

Login