Apply classic sudoku rules. Digits along an arrow sum to the number in the circle - all numbers in 'circles' are unique 2-digit numbers. Along thermometers shapes, digits must increase from the bulb end.
Solution code: Enter rows 1 and 8 (18 digits, no spaces)
on 22. March 2022, 14:16 by Crusader175
Tricky ending, but very fun puzzle!
on 22. March 2022, 01:43 by Elliott810
Very nice puzzle! Thanks for sharing:)