I made this puzzle back when I was almost exclusively making arrow puzzles that required set theory, but I never published it.
Special thanks to PotatoHead21 who helped make some improvements to the puzzle!
RulesNormal sudoku rules apply.
Numbers along an arrow must sum to the number shown in the circled cell.
In cages, digits cannot repeat and must sum to the small clue given in the top left corner.
Cells separated by a black dot are in a ratio of 1:2. Not all dots are shown.
Solve the puzzle at f-puzzles
Solution code: Row 7 and Row 8
on 10. October 2021, 18:35 by Piatato
Great puzzle!
on 10. October 2021, 16:34 by ecavalli
I'm sure this is an extraordinary puzzle and I was lucky proceeding by trial and error with arrows in box 4 and 5. Unfortunately it is probably too much for me to fully understand the logical path to the solution...
on 6. October 2021, 11:31 by abed hawila
Great puzzle!
on 5. October 2021, 01:18 by polar
I can never resist an FTG arrow/set theory puzzle! Took me a little while to find the right balance in this one, but once I did, it was just a delight. Thank you as always!
----------
Glad you enjoyed it! Your comment on my witness puzzles is what reminded me that I created this one a long time ago.