Normal Sudoku rules apply.
Cells that are a knight's move apart (in chess) cannot contain the same digit.
Digits along green lines are palindromes.
Digits along thermometers (grey lines with bulbs) must strictly increase from the bulb end.
The cells along the arrow must sum to the cell in the associated circle.
You can play it here: f-puzzles.
Good luck!
Solution code: Row 1 and row 4 (18 digits)
on 8. March 2021, 18:19 by Orpheus
I don't want to spoil anything in the comments, but I loved how everything felt like it solved all at once. What a beautiful journey!!
on 5. March 2021, 18:50 by ssaper
Loved this. Really fun solve!