Reachin' some region sums
(Published on 6. September 2022, 08:00 by twototenth)
Normal Sudoku rules apply. Blue lines are region sum lines; the digits along these lines must have the same sum in each region entered by the line. The grid contains nine "doublers," one in each row, column, and box; each digit from 1-9 is "doubled" exactly once. Doubled digits count as twice their value for the purposes of the sum lines.
CTC link (with solution check)
Solution code: Row 6 followed by column 7, no spaces
Comments
on 9. October 2022, 11:50 by ddx2407
Some neat deductions there! And non-conventional use of doubles.
Very well done. Thank you!
on 9. October 2022, 00:58 by SimplePurpleFrog
Wow! What a beautiful puzzle.
Great logical flow, a lot of fun to solve.
on 15. September 2022, 05:14 by Vebby
So good! A joy to solve.
on 11. September 2022, 05:12 by wooferzfg
Really fun!
on 10. September 2022, 07:54 by Christounet
Great use of the doublers !
The break in and following steps are very clever, with rather simple ideas put together in a powerful combinaison of region sum lines.
Wellington donc !
on 10. September 2022, 01:06 by zetamath
One of my favorite puzzles of the year, seriously!
on 9. September 2022, 01:37 by thoughtbyte
Beautiful, smooth, and a sweet spot for difficulty. Thanks @twototenth!
on 8. September 2022, 02:53 by Ambrose
Thoroughly enjoyable!
on 8. September 2022, 01:56 by cdwg2000
【双倍数区域总和线数独-哔哩哔哩】 https://b23.tv/qWniwIQ
on 7. September 2022, 21:36 by djorr
I always love your titles. Very nice construction and a break-in with quite some thought. Loved it!
on 7. September 2022, 03:55 by cdwg2000
Very nice and smoothly.
on 6. September 2022, 14:25 by Andrewsarchus
An amazingly well constructed puzzle! The solve path flows very smoothly throughout, leading to a very pleasing and elegant solve.
