Logic Masters Deutschland e.V.

Mosaic

(Published on 19. January 2026, 21:47 by zetamath)

[This puzzle was collaboratively set on stream with my friends on stream! Video here. We also set a much harder puzzle which I will also post.]

Normal sudoku rules apply.

GW: Adjacent digits along a GW line must differ by at least five.

Ent: Any set of three adjacent cells along an Ent line must contain a low digit (123), a middle digit (456), and a high digit (789).

Black Dot: Cells separated by a black dot are in a 2:1 ratio. Not all dots are necessarily given.

White Dot: Digits separated by a white dot are consecutive. Not all dots are necessarily given.

Ten Lines: Digits along gray lines must be broken into one or more contiguous groups of cells that add to ten. Such groups cannot overlap. Digits may repeat within such sums if allowed by other rules. For example, 513173 is a valid fill for a length 6 line, because it can be broken into 5131 and 73, each of which sum to 10.

DW: Adjacent digits along a Dutch Whispers line must differ by at least four. This Dutch whisper is dedicated to palfly.

Par: Digits along a parity line alternate odd/even.

Nab: No two digits along a Nabner line can be consecutive, regardless of their position on the line.

Have fun, leave a comment if you enjoy the puzzle!

Play this puzzle on SudokuPad

PS: I stream solving sudoku like puzzles two days a week, as well as posting Let's Plays of puzzle games like Blue Prince. You can check out the channel, as well as some videos I have made about setting puzzles, at my YouTube channel here.

Solution code: Row 9


Solved by cornish-john, twototenth, Ambrose, idanz, damo_89, sujoyku, Bjd, NCtide, SKORP17, potatojuiceultra, Silverscree, forsen, tuturitu, LuridGraph, killer_rectangle, antiknight, Bellsita, StazStazStaz, ... Freegerator, meiwanmeiliao, sorryimLate, jkuo7, lancer102rus, Leek169, tuckerbucket, emoney1374, Julianl, Piff, HelloKetene, Jesper, SpecSheets, Calvinball, tallcat, raj64107, Dibi, AllesUgo
Full list

Comments

yesterday, 02:54 by Freegerator
I really liked this one, thank you!

on 20. January 2026, 21:01 by GeorgeTheToad2
Interactions were great. Average difficulty for me.

on 20. January 2026, 20:58 by wuc
Beautiful handcrafted gem. To me 3*. Great setting thx.

on 20. January 2026, 11:29 by Exigus
Fantastic puzzle. Thanks!

on 20. January 2026, 11:25 by Christounet
Cool puzzle. Not sure I used bottom left nabner here.

on 20. January 2026, 09:23 by Snookerfan
Beautiful! The solve path is so well guided that I finished it in a 2 star time. Thanks

on 20. January 2026, 09:05 by Piatato
Very nice!

on 20. January 2026, 04:27 by mathpesto
Loved it! Fantastic solve throughout

on 20. January 2026, 00:10 by NCtide
Thanks, fun and challenging puzzle. Great interaction between the constraints.

Difficulty:3
Rating:96 %
Solved:84 times
Observed:2 times
ID:000R36

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