Standard Sudoku rules apply.
Killer: Numbers in dashed cages must not repeat and sum to the number in the upper left corner (if given).
Arrows: Numbers along an arrow sum to the number in the attached circle
f-puzzles: Neptune's Prison
Solution code: Enter the digits across row 5 with no spaces
on 10. January 2024, 12:13 by Montikulum
Great design!
on 15. September 2022, 18:02 by Jacsn
What an elegantly designed puzzle! Thanks for setting this.
@Jacsn Thanks for trying it out!