The 6 Sudokus of Christmas
(Published on 10. December 2020, 01:26 by Stavros96)
"The 6 Sudokus of Christmas" by Stephen Parthimos (Stavros96)
WELCOME to the 12 Days of Christmas inside the 6 Sudokus of Christmas! Each grid represents 2 days of Christmas - beginning with “12 Cells Ratio-ing” all the way to a “Bulb in a Thermo Tree”. Set aside some time this holiday season to solve your way through this huge gift - made just for you!
Rules (out of grid):
- Difference: The difference between the first 2 digits in the corresponding direction
- Sandwich: Sum of the digits between 1 and 9 in the row
- Parity: Number of parity changes in the corresponding column
- X-sum: The sum of the first X numbers placed in the corresponding direction, where X is equal to the first number placed
- Outside-3: The digit must be placed in one of the first 3 cells in the corresponding direction
- Outside-2: The digit must be placed in one of the first 2 cells in the corresponding direction
- Skyscraper: Digit indicates how many skyscrapers can be seen from corresponding direction
Rules (in grid):
- Black dots: Ratio of 2:1 (no negative) // White dots: Consecutive digits (no negative)
- Killer cages: No repeating digits // Grey squares: Even digits
- Grey circles: Odd digits // Palindromes (green lines): Same digits from each end
- Quadruple circles: Digits in the circle must appear once in the cells around it // V clues: Sum to 5 (no negative)
- X clues: Sum to 10 (no negative) // Arrows: Digits on arrow sum to circle
- Thermos: Digits increase from bulb
(Clues outside the grids apply to both grids they touch)(Long diagonal lines in the image are cosmetic only - not part of the puzzle)
Penpa Link: Click Here
Solution code: Row 1 of every grid in order. No spaces. (The 3 grids on top first, then the 3 grids on bottom)
Comments
on 28. April 2021, 04:08 by Krokant
The interactions between the sudokus are incredible well done. This is an outstanding construction.
on 1. January 2021, 15:41 by Statistica
Very nice challenge. Even on New Years Day :-)
on 21. December 2020, 10:27 by Lagavulin
Ein Meisterstück! Vielen Dank!!
on 16. December 2020, 11:48 by AnnaTh
I printed the puzzle out because it looked so inviting. Although I knew this would consume a lot of my time I could not resist. And what fun! It was worth every single second. Thanks for constructing!
@AnnaTh Thanks for solving!!
on 15. December 2020, 04:01 by cdwg2000
Very nice,thanks.
on 11. December 2020, 14:46 by SirWoezel
Can't really agree with Mark. This is actually six masterpieces. Solving this was just one fantastic trip from one superb piece of logic to the next. I'm truly sad I finished it already. Luckily my memory is so bad I might be able to do it again at Christmas.
@SirWoezel Thanks for the kind words!! Solve it each month - it's the gift that keeps on giving.
on 10. December 2020, 09:36 by Mark Sweep
A true masterpiece. It is amazing how some constraints interact and there is a lot of fun logic to discover, while being approachable throughout.
on 10. December 2020, 01:56 by Wessel Strijkstra
Honestly one of the most awesome puzzles I've ever solved, everything works together so nicely, would recommend to everyone to take a bit of time and solve this monster!
