Logic Masters Deutschland e.V.

Normal Sudoku rules apply.
Grey circles indicate odd digits.
Digits in cages add up to the small number in the upper left corner of the cage. Digits cannot repeat in cages.
All unmarked cages are pieces of one single larger cage, in which digits do not repeat and together the five cells add up to 25.
Although the grey line may look like a thermo, it is a palindrome that reads the same both ways. There are no thermos in this puzzle.

Here is a link to play: F-Puzzle link