Logic Masters Deutschland e.V.

The Rotmensens

(Published on 29. August 2026, 05:38 by TheMegaDud)

1. Normal Sudoku rules apply (put the digits 1-9 in each row, column, and 3x3 box).
2. Little Killer: For every clue outside the grid, digits along the indicated diagonal sum to the given number.
3. Yin Yang: Shade some cells such that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 area is fully shaded or fully unshaded.
4. Killer Cages: Digits cannot repeat in cages, and must sum to the value in the top-left corner if given.
5. Each cage must be fully shaded or unshaded. Each shaded cage must sum to a prime number. Each unshaded cage must sum to a square number.
6. Each cage has a unique sum.

Play online on SudokuPad

Solution code: Second row, from left to right.

Last changed on on 7. September 2026, 18:48

Solved by vollbesonderbar, nicklase, by81996672, Onyoubi, SKORP17, Bjd, Snookerfan, Statistica, Asphodel, LabRat, TrivialHomology, kangaroo
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Comments

on 7. September 2026, 18:48 by TheMegaDud
Updated difficulty

on 4. September 2026, 21:39 by TrivialHomology
Congrats on the fun debut! While the Break-in is fairly approachable, the sustained difficulty throughout warrants a 4*-rating I think ◡̈

on 1. September 2026, 22:22 by TheMegaDud
Reworded the shaded/unshaded cage restriction to clarify that each cage INDIVIDUALLY needs to sum to either a prime/square number respectively.

Last changed on 2. September 2026, 04:14

on 31. August 2026, 11:01 by Snookerfan
Very nice! Some very clever deductions required, so I gave it 4 stars. The wording of the sum of the cages was a bit confusing: at first I thought it meant the sum of all the cages together, which made the puzzle impossibly hard, so I assumed it meant each cage individually. which appeared to be the case. Thanks!

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Author reply: wonderful to hear you enjoyed it! I am quite new to setting (First one here, first big variant) so I was unsure of the difficulty. Edited the cage sum restriction based on your feedback.

on 29. August 2026, 14:09 by TheMegaDud
formatting edit

on 29. August 2026, 14:08 by TheMegaDud
clarified killer cages with a given sum must equal that sum.

Difficulty:4
Rating:N/A
Solved:12 times
Observed:1 times
ID:000ULW

Puzzle variant Variant combination Shading puzzle

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Solution code:

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