Normal Sudoku rules apply. The digits from 1-9 must appear once each on both main diagonals (which are marked). The digits along diagonals marked by arrows outside the grid must sum to the total given at the arrow; digits may repeat along these diagonals if allowed by other rules. The digits in cages must sum to the total in the top-left corner of the cage; digits may not repeat within a cage.
F-puzzles link: Link to solve online
Solution code: Row 2 followed by column 7, no spaces
on 23. May 2022, 19:06 by DiMono
You can't prove this took me 4 hours.
>.>
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on 12. December 2021, 05:05 by Jeet Sampat
I struggled quite a bit even after the supposed "break-in" haha. Very satisfying to see everything fall in place, though. Great construction!
on 10. December 2021, 18:00 by grkles
Wow. What a puzzle!
on 9. December 2021, 18:32 by Playmaker6174
What a crazily brutal and wonderful puzzle! I sweated so much just to find the next step after finding the opening trick, yet every step felt so rewarding.
on 5. October 2021, 19:46 by djorr
Exceptional puzzle! 5/5 for sure and loved every minute of it!
on 12. August 2021, 13:25 by twototenth
Updated difficulty estimate based on early solver experiences
on 10. August 2021, 19:31 by tallcat
Fantastic construction but exceedingly hard for me. I would put this at 5/5 difficulty.
on 10. August 2021, 19:26 by SSG
This is a beautiful construction; but, a tough puzzle every step of the way.
on 10. August 2021, 15:24 by SirWoezel
Pretty tough, even after the initial 'break-in'. Nice puzzle.