Christmas Chaos
(Published yesterday, 12:00 by SennyK)
I hope that chaos before Christmas is already gone! I wish you all Merry Christmas ❤️
I hope you will enjoy and I would be really grateful for all the comments and ratings.
Chaos construction: Divide the grid into nine orthogonally connected nine-cell regions, and place the digits 1 to 9 once in each row, column, and region.
Region separation: Each 2 digits directly adjacent on any inside-grid constraint (i.e., X-Sums and Sandwich excluded) must belong to separate regions.
X-Sums: A star outside the grid gives the sum of the first X digits of its column from the direction of the star, where X is the digit placed in the cell next to the star.
Sandwich: A gift outside the grid gives the sum of the digits appearing between the 1 and the 9 in its column.
Palindrome: Digits along a gray line read the same in both directions.
German whisper: Adjacent digits along a green line have a difference of at least 5.
Parity: Adjacent digits along a red line alternate between odd and even.
Renban: Digits along a purple line form a set of non-repeating consecutive digits in any order.
Killer: Digits in a cage sum to the total given.
Kropki dots: Digits in cells joined by a white dot with 7 have difference of 7. Digits in cells joined by a black dot are in a 1:2 ratio (i.e., one digit will be double the other). All dots satisfying the region separation rule are given (i.e., if two orthogonally adjacent digits are in 1:2 ratio or have difference of 7, but there is no dot between them, they belong to the same region).
If you liked this puzzle, I recommend trying out my other puzzles: The Erica Series:★☆☆☆☆: 1, 2, 4, 5, 6, 12, 15, 17, 23, 26, 27
★★☆☆☆: 3, 7, 8, 10, 11, 13, 14, 16, 18, 20, 24, 25
★★★☆☆: 9, 19, 21, 22, 28 Shading/Ying-Yang:
★★☆☆☆: Pretty Odd Shaded Area
★★★☆☆: (+5)-Yang, Negative 8 YY
★★★★★: Why-Why? Fog of War:
★☆☆☆☆: Erica 12, Erica 17
★★☆☆☆: It's What You Do in the Dark That Puts You in the Light, Find It All, What the Fog?, Erica 20
★★★☆☆: Broken Flashlight in the Dark Pencil Puzzle/Sudoku Hybrid:
★★☆☆☆: Masyu (Short) Sudoku
★★★☆☆: Tetromino Sudoku
Various Puzzles:
★☆☆☆☆: Blown Fuses in Electrical Installation, Let Me Introduce Myself, French Wrench, GAS Regional Constraints
★★☆☆☆: Symmetrical Fan, Night Club, Important Hour on the Clock, What Was the Sum Again?, Disgroup Joints, 10-Arrows, Antiking Dutch Skyscrapers, (Not so) Little Killers
★★★☆☆: Cops & Robbers, Positive Symmetry, Doppelgänger Killer 1-25, Region Whisper Line
★★★★☆: Liars. Liars Everywhere.
Solution code: Sixth (6th) row of the grid from left to right (with the symbol "/" marking borders between regions, e.g., 1/23/456/7/89).
Comments
today, 12:34 by mihel111
Fantastic christmas puzzle.
A unique CC philosophy. Very well done.
today, 11:44 by Snookerfan
Very nice! 2 puzzles in 1: first sudoku, then, independently, region building. Sudoku was straightforward, region building was tricky, Thank you and merry Christmas
today, 03:10 by chinesemaster
Very unique region building logic. Great fun, thanks!
today, 00:59 by wuc
Very different cc puzzle. Great setting thx.
yesterday, 16:20 by marcmees
One of the rare cc’s where regions get constructed after all digits have been found. Nice. Thanks
yesterday, 13:50 by erml
Loved the regionbuilding to finish the solve! Thank you!
