Logic Masters Deutschland e.V.

What Was the Sum Again?

(Published on 6. November 2025, 17:15 by SennyK)

What Was the Sum Again?

I hope you will enjoy my fifteenth puzzle.
I would be really grateful for all the comments and ratings.

Normal sudoku rules apply.

Arrow: Digits along an arrow sum to the number in the attached pill read from left to right or from top to bottom.

German whisper: Neighbouring/adjacent digits along a green line have a difference of at least 5.

Equal-sum line: Each blue line in the grid has the same sum of digits (not to be confused with region sum lines).

Sandwich: A clue outside the grid gives the sum of the digits appearing between the 1 and the 9 in that row/column.

SudokuPad Link

If you liked this puzzle, I recommend trying out my other puzzles:
Symmetrical Fan
Night Club
Cops & Robbers
Broken Flashlight in the Dark
Blown Fuses in Electrical Installation
Important Hour on the Clock <- Recommended for you!
Let Me Introduce Myself
Positive Symmetry
Pretty Odd Shaded Area
Erica
Erica 2
Erica 3
It's What You Do in the Dark That Puts You in the Light
Erica 4
(+5)-Yang

Solution code: Third (3rd) column of the grid from top to bottom.

Last changed on on 9. November 2025, 17:23

Solved by Siebuhh, Photyne, jalebc, Ste1729, Chaos1989, Teithiwr, SKORP17, superkinkel, tomer, root_vegetable, tiwe, Cascade, dzamie, Ragna, Playmaker6174, SirThomas, L00ping007, TaeChi, PinkNickels, efnenu, zuzanina, Crul, keenbowl, Elizy, geronimo92, ecavalli, Unlocked, Nagesh, Silentdodo, Natka23, JRaunak, Jastucreudo, Adaki, IMAY1990, Spatzewind, dickey, ole-1995a, orangeking, mezkur7
Full list

Comments

on 7. November 2025, 12:00 by SirThomas
It was a blast solving it, thanks for creating!

on 6. November 2025, 23:29 by Ragna
Fun puzzle. Not so easy. Thank you. :-)

on 6. November 2025, 22:44 by dzamie
That was pretty fun! Wasn't terribly hard to work out the basics of each constraint: the arrows were simple enough, and that basically narrowed down the lines' sum immediately - but they all worked off each other pretty nicely!

on 6. November 2025, 19:30 by Teithiwr
Nice flow to this one, even though it took me a while. Thank you - will check out your other puzzles!

Difficulty:2
Rating:86 %
Solved:39 times
Observed:0 times
ID:000Q00

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