Logic Masters Deutschland e.V.

Productive Killers

(Published on 18. March 2026, 17:27 by Yawnus)

This ruleset has been previously used by Nylimb in their fantastic series "Sums are products", of which #2 is a true masterpiece.
Although multiplication lies at the heart of the ruleset, the maths are actually quite simple here and in Nylimb's puzzles as well. Have fun!

Rules:

Normal sudoku rules apply. Digits cannot repeat within a cage. Whenever two cages share an edge, the digits in one cage sum to the product of the digits in the other.

Play with SudokuPad

Solution code: Column 4


Solved by mnhuik, TheCutmaster, SKORP17, Terrapin, deltameth, Crusader175, PuzzleJohn, misko, Nylimb, Fredneu, Richard, Qodec, NEWS, Narayana
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Comments

on 1. May 2026, 16:47 by Qodec
Very clever! Astonishing puzzle.

on 1. May 2026, 10:13 by Yawnus
Nylimb and Richard, thank you for the comments and for linking to this puzzle!

on 30. April 2026, 20:07 by Richard
Incredible nice puzzle, with a very limited number of cages. Very well set! Thx for this gem. :)

Last changed on 31. March 2026, 10:52

on 31. March 2026, 10:34 by Nylimb
Nice! I figured there must be some breakins that I hadn't thought of, and this has 2 of them.
(@ Yawnus: Sorry, I missed your announcement of this puzzle when you published it, so I didn't see it until now. I've added links to this puzzle from all 3 of mine.)

Difficulty:4
Rating:90 %
Solved:14 times
Observed:0 times
ID:000RY6

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Solution code:

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