Normal Sudoku rules apply. Digits in a cage must sum to the total in the upper left and digits cannot repeat in cages. Digits on a thermometer must increase from the bulb end. Digits on an arrow must sum to the total in the circle.
Solution code: All 18 digits from rows 1 and 2.
on 24. July 2023, 14:49 by Die Hard
Added solution to CTC link.
on 6. February 2023, 22:01 by Die Hard
Adjusted difficulty setting.