Normal Sudoku rules apply. Additionally:
Antiking: cells a chess king's move apart may not contain the same digit.
XV pairs: cells separated by an X sum to 10; cells separated by a V sum to 5. Not all Xs and Vs are necessarily given.
Arrows: digits along an arrow sum to the digit in its circle.
F-Puzzles: https://f-puzzles.com/?id=2d3pcr3b
CTC: https://tinyurl.com/Antikingleidoscopic
Solution code: Row 1, column 2.
on 22. October 2022, 01:13 by Innocuous
Very satisfying solve with a lot of interesting logic throughout. Very clever use of the arrows!