Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply.
All orthogonally adjacent digits that sum to 10 are marked with an 'X'.
Digits on arrow sum to the total in the circle (read left to right).
Digits in grey circles (the 'eyes') are odd.
Digits on thermometer must ascend from the bulb end.
Kropki dots indicate a constant ratio between cells. You must ascertain that ratio. Not all Kropki dots are given.
The brown 'beer' and grey 'arm' lines are even/odd lines. Digits on these lines alternate odd/even.
One of the grey 'arm' lines is also a Renban line. All digits on a Renban line form a sequence of consecutive numbers, but in any order. You must determine which of the arm lines is the Renban line.
Both grey 'arm' lines sum to a total that is a multiple of the Kropki ratio.

All comments, ratings and feedback are very welcome and appreciated.

Good luck :)