Rules:
Normal sudoku rules apply.
Digits in cages must sum to small clue in that cage.
Digits on a Thermometer must increase from the bulb end.
Red lines are triple duty lines and act as all of the following:
Renban:
Digits must be consecutive in any order.
Region Sum
Box borders divide lines into segments with the same sum
Dutch Whispers:
Neighboring digits must have a difference of at least 4.
Lösungscode: Solution is the negative diagonal.