Aztec
(Published on 2. August 2025, 07:28 by RedBarchetta)
Rules: Normal Sudoku / Normal Variant rules apply.
Normal: Place the digits 1 to 9 once each in every row, column, and 3x3 box.
German Whisper – Consecutive digits on green lines must differ by 5 or more.
Modular Lines – Every 3 cells along a teal modular line must contain one "left" digit (147), one "middle" digit (258), and one "right" digit (369) .
Quadruples – Every digit in a white circle must be assigned to one of the surrounding cells.
Renban Lines – Digits on purple lines are a set of consecutive digits without repeats in any order.
Commentary Corner: There's a bit of parity play, some German squishiness, and some 19-28-37-46 coloring. Lots of ways to attack and have fun; Enjoy!
Links:
Solution code: Column 9 - top to bottom.
Comments
on 3. August 2025, 09:36 by Franjo
Beautiful puzzle. Thank you very much for sharing.
on 2. August 2025, 17:58 by VitP
comment for MARS:
the "extra" modular lines are needed to complete the PICTURE
>> Nailed it!
on 2. August 2025, 17:33 by RedBarchetta
Corrected CTC puzzle rules
on 2. August 2025, 17:28 by RedBarchetta
Clarity on rule
on 2. August 2025, 17:27 by RedBarchetta
Corrected Mod 3 description
on 2. August 2025, 17:26 by RedBarchetta
Oops, I did it again! I consistently mean the one rule and type the other. It was copy paste error - correct. The lines are Mod 3 from 147-258-369. Thanks for the catch! And I will update the rules and the puzzle link.
on 2. August 2025, 13:14 by Marshal on Mars
You can completely remove three of the modular lines and it still solves logically (and still quite easily). That's not a problem necessarily, but it struck me as odd.
>> Correct. I added them all for symmetry. I considered adding a link to a "harder" version without all the same clues.
on 2. August 2025, 12:53 by sujoyku
Thank you for this beautiful and fun puzzle, RedBarchetta!
@CortexVortex: The lines are modular, not entropic. There is a (copy-paste?) error in the rules. Any three digits on the line must have different remainders when divided by 3 (one of 147, 258 and 369 each).
>> My pleasure, sujoyku! Glad you enjoyed it!
on 2. August 2025, 08:57 by CortexVortex
How can the teal lines be modular and all of them from 1234, or 1289? there's no large # in the first example and no middly digit in the second example, though the lines are 3 cells long?
on 2. August 2025, 08:43 by iamissam
There is a mistake in the rules
For the modular line every 3 cells must contains 147, 258, 369
not 123, 456, 789
on 2. August 2025, 07:35 by RedBarchetta
None.
