6ix 7even
(Published on 26. January 2026, 03:24 by imTrash)
Heard the joke way too often, now it is stuck with me. So logically, I created my first ever Sudoku with this in mind.
Rules:
Normal Sudoku rules apply.
Killer Cages: Digits in a cage must sum up to the number in the upper left corner of the cage, digits cannot repeat.
Little Killer: The numbered arrow outside the grid indicate the sum of the digits in the corresponding direction. Digits can repeat.
German Whiskers Lines (green): adjacent digits on the line must have a difference of at least 5.
Parity line (red): adjacent digits must be alternating between even and odd digits.
Modular Line (teal): every set of three sequential digits along a line must contain a complete set of mod3, i.e. one digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}.
Black Dot: one of the digits has to be double the other.
Quadruples: All digits inside a circle appear in at least one of the four surrounding cells.
Even Cells: all cells with a gray square contain an even digit.
Arrow: The digits on the arrow path add to the digit in the circled cell.
Thermometer: Digits on the thermometer must increase from the bulb onwards.
XV: Cells connected by an X must sum to 10, cells connected by an V must sum to 5.
Solve on SudokuPad
Solution code: Row 9 from left to right.
Comments
on 26. January 2026, 19:19 by imTrash
Had some inaccuracies in the ruleset, fixed now
on 26. January 2026, 13:29 by marajade
Very fun! I love how you layered the theme into the puzzle in so many different ways, and the solving logic had a very enjoyable flow.
on 26. January 2026, 06:25 by Mattisahuman
In the rules you call the red lines “polarity lines”. They’re parity lines. Polarity would be alternating between high digits (6789) and low digits (1234).
Also you don’t say the color of the modular line despite including the color of every other line.
Otherwise, very cool puzzle!
