Icing disaster (Region sum lines/X-sums)
(Eingestellt am 30. Juni 2023, 22:38 Uhr von dumediat)
This is a puzzle that I created for Derektionary's (djorr's) birthday, which they encouraged me to share with all of you. Ratings, comments, and feedback are much appreciated! Please feel free to reach out to me on Discord if you have any comments or questions. Please also feel free to try my other puzzles here.
Edit: This puzzle was featured on CTC! Click here if you would like to watch Simon's solve.
Rules:
- Normal sudoku rules apply.
- Region sum lines: Digits on a blue line must have an equal sum within each region it passes through, regardless of how many times the line exits and re-enters a region. The area outside the grid is considered one region for purposes of this rule. Different lines may have different sums.
- X-sums: Numbers outside the grid give the sum of the first N digits in their respective row or column, where N is the digit nearest the clue (inside the grid).
To be clear: This puzzle uses the "old" region sum lines rules, which affects how the lines work in boxes 1 and 7 specifically. The following statements describe how these lines must be interpreted (rows/columns 0 and 10 indicate cells outside the 9x9 grid):
- Box 1: r0c1 + r1c0 = r1c2 + r1c3 + r2c1 + r3c1 + r3c2
- Box 7: r8c0 + r10c3 = r7c1 + r8c1 + r9c1 + r9c2
Penpa+ (recommended for note taking): https://tinyurl.com/23srx4rh
SudokuPad: https://tinyurl.com/4w5w9veu
Lösungscode: Row 7 followed by column 2 of the 9x9 grid (18 digits)
Kommentare
am 16. August 2023, 19:56 Uhr von damasosos92
Brilliant!!
am 22. Juli 2023, 18:23 Uhr von Silverbyte
This took me quite a long time but the logic was truly excellent! Loved how tricky this was while still having a smooth solve path
am 12. Juli 2023, 14:15 Uhr von Bankey
Gorgeous puzzle. Thanks, @ dumediat :).
am 12. Juli 2023, 07:41 Uhr von ddx01
Loved this one! Thank you, dumediat! ^_^
am 11. Juli 2023, 20:12 Uhr von glum_hippo
Happy belated birthday, Derektionary! Nice puzzle!!!!!
am 11. Juli 2023, 18:18 Uhr von dumediat
Added link to CTC's solve.
am 3. Juli 2023, 22:14 Uhr von dumediat
Updated links so solution checker works in SudokuPad and rules clarification is included.
am 2. Juli 2023, 17:09 Uhr von madhupt
What a brilliant puzzle! Really satisfying to have completed it. It is really wonderful how the two conditions interact to guide on the solve path. Thanks a lot for sharing.
>>dumediat: You're welcome! I'm glad you enjoyed it, and thank you very much for the kind words!
am 1. Juli 2023, 20:15 Uhr von bansalsaab
Awesome. Thanks for setting it.
>>dumediat: You're welcome, I'm glad you enjoyed it!
am 1. Juli 2023, 12:11 Uhr von Piatato
Awesome puzzle!
>>dumediat: Thank you! :)
am 1. Juli 2023, 12:04 Uhr von marcmees
quite some search, but enough interactions not to get lost. Very nice. Thanks.
>>dumediat: I'm glad you enjoyed it!
am 1. Juli 2023, 11:43 Uhr von Elliott810
Absolutely brilliant puzzle! Take a bow and thanks:)
>>dumediat: Thank you so much! :D
am 1. Juli 2023, 00:56 Uhr von Myxo
Wonderful puzzle! Some really fun geometry in this one.
