Event Horizon (Doubler Region Sum Lines)
(Published on 21. November 2022, 00:19 by Xendari)
This should be quite an approachable puzzle; it features an opening deduction that instantly came to my mind once doublers were popularised (thank you Zetamath!), but the final grid looks very different to the way I thought it might have played out. As always, your feedback is appreciated, and I hope you enjoy Event Horizon :)
Rules
Sudoku: Normal sudoku rules apply.
Region Sum Lines: Values in cells along a region sum line have an equal sum "N" within each box that line passes through.
Note: no two lines touch or cross each other; the line at r5c5 branches.
Doublers: One cell in each house (row, column, and box) is a doubler. Every number from 1-9 is doubled once. These cells count as double their value for the purposes of region sum lines; i.e., a doubler 2 + a normal 4 = a doubler 4.
Solve online:
SudokuPad (with solution check) | F-Puzzles
Solution code: Row 1
Comments
on 12. April 2024, 23:51 by Agent
Approachable puzzle with a great flow, thanks!
on 28. July 2023, 01:09 by Nemefish
Had a very fun time solving this puzzle. I like that the entry point was not too hard to spot. Challenging but never felt totally lost.
on 18. December 2022, 12:59 by Christounet
A very nice setting with 2 of my favorite rules ! You made it very flowing, interesting and fun.
on 7. December 2022, 06:49 by cdwg2000
Very nice and smooth.
on 27. November 2022, 14:36 by gfoot
Very nice, good flow, thank you!
on 21. November 2022, 22:12 by twototenth
Very nice! Good setup and fun logic throughout.
