4's and 7's
(Published on 26. July 2022, 21:20 by the_cogito)
Rules:
- Normal sudoku rules apply.
- Numbers along pink renban lines must form a set of unique consecutive numbers in any order.
- Additionally, one cell in every row, column, and box contains a doubler cell. For purposes of renban lines, a digit in a doubler cell counts for twice its value (For example, 2-3-2 could be a valid renban if one of the 2s were on a doubler cell, as it'd then effectively be 2-3-4, which is consecutive).
Setter's note: It's worth noting that not every doubler cell must be on a renban line. In such cases, a doubler cell would serve no function with respect to any renbans, but would prevent other doubler cells in its row, column, or box.
Solve on CTC App
Solve on f-puzzles
Solution code: Row 8, followed by column 2 (18 digits, no spaces)
Comments
on 21. November 2022, 16:08 by Christounet
Very fun puzzle with a nice use of doublers !
I was put off by an assumption I made based on previous solving experience with doubler puzzles, which most of the timz require the solver to find unique doublers... This caused a couple of unfortunate "i broke the puzzle" moments, until I read the rules again and realized my mistake... Silly me !
Thanks again for this !
on 17. August 2022, 20:12 by thoughtbyte
Very nice puzzle, lots of fun. Thanks @the_cogito!
on 16. August 2022, 22:43 by FmrSudokuPhilosopher
Very cool philosophy of sudoku
on 16. August 2022, 04:47 by tallcat
What a brilliant construction. Really nice telegraphing and i loved the use of doublers in the finale. Great stuff!
on 27. July 2022, 19:15 by grkles
Ooooooh i JUST understood the title. Gorgeous puzzle with unique logic!
on 26. July 2022, 21:28 by Schwupel
Great puzzle all the way through! Very nice mixture of difficulty and smoothness.
on 26. July 2022, 21:21 by Niverio
Very smooth puzzle, this one :)
on 26. July 2022, 21:21 by KNT
Very fun to test, the ending is great!
