Logic Masters Deutschland e.V.

Happy Birthday Dad

(Published on 1. January 2026, 09:33 by masetab)

I created this puzzle for my father's 60th birthday which was on New Year's Eve and thought I would share it here.

Hope you enjoy!

Play the sudoku here:

Sudoku Pad

Rules:

Normal sudoku rules apply.

German Whispers: Adjacent digits on green lines must differ by 5 or more.

Cages: Digits in cages must sum to the number in the top left corner.

Digits in gray squares are even. The two digits separated by the black dot are in a 1:2 ratio, i.e., one digits is double the other.

View my other top puzzles:

  1. Consecutive Territories (5/5 Difficulty):
    Solve on Logic Masters
  2. Non-Consecutive Territories (5/5 Difficulty):
    Solve on Logic Masters
  3. Hidden Paths (2/5 Difficulty):
    Solve on Logic Masters
  4. Point Taken (2/5 Difficulty):
    Solve on Logic Masters
  5. The Knight's Battle Axe (4/5 Difficulty):
    Solve on Logic Masters

Any feedback is welcomed!

Solution code: Row 5


Solved by ranhothchord, Joven, zonny, jalebc, Matti64, pepe74287, Hengist, Kigor, azalzamil2005, mnhuik, Inge, Postnormal, flaemmchen, supersim2000, Bravissimo, Qodec, Hyoryn, Bobs, gdc, LehanLehan, Guillem98, ... jgarber, alx, BakBak, hsimah, macmillan333, H.I. McDunnough, klizun, agvard, PinkNickels, EmX68, DaFunkyMonk, abadx, karlmortenlunna, me and the paws, timww572, alexgreyy, Photyne, Leek169
Full list

Comments

on 2. January 2026, 23:54 by Myfyr MJ
Very nice and happy birthday!

on 1. January 2026, 15:22 by Ragna
Fun puzzle! Good wishes for your dad! :-)

on 1. January 2026, 14:53 by drbs
Very nice birthday present! I wish I would receive such presents. :-)

on 1. January 2026, 14:46 by galium_odoratum
Fun easy, thank you for setting and happy birthday to your dad :)

on 1. January 2026, 12:41 by Inge
Nice puzzle, happy birthday to your dad

Difficulty:2
Rating:93 %
Solved:116 times
Observed:0 times
ID:000QT2

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