White Christmas in Sa Pa
(Published on 21. January 2026, 14:19 by Chilly)
Here's another older puzzle of mine, that didn't get published yet. I made it as a Secret Santa present back in 2021 for one of the Vietnamese puzzlers on CTC discord, hence the 'Santa' and Vietnamese references in the puzzle - the flag, the international dialing code (+84), etc.
The Rules:
- Normal Sudoku rules apply.
- The adjacent digits in the green Christmas trees are Vietnamese whisper digits, and must differ by at least 4.
- The digits in the yellow star of the Vietnamese flag are a consecutive set of digits, but may appear in any order.
- The digits in the red cells of the Vietnamese flag must sum to a total of 84.
- Digits separated by a white snowflake must be consecutive. Not all snowflakes are given - some of them have melted! :)
White Christmas in Sa Pa
by Chilly
Solution code: Row 4, followed by column 6.
Solved by Qodec, Deivi55, gdc, maniacaljackal, SKORP17, Neumino, jalebc
Comments
Last changed on 21. January 2026, 18:00
on 21. January 2026, 16:56 by Titoy
I finished puzzle, but red sum was 83
Did you try and enter the solution code? If so, you'll see that it is wrong, because the sum is definitely 84.
