Logic Masters Deutschland e.V.

My first doublers/ambiguity puzzle.

Rules:

-Normal sudoku rules apply.
-There are 9 cells, one in each row/column/box, which are doublers. For the purposes of the constraints, doublers double the value of a cell. Each digit from 1-9 is doubled exactly once.
-A line with a circle/bulb is either an arrow or a thermo, the solver must determine which. Values on an arrow must sum to the value in the attached circle. Values along an thermo must increase from the bulb end. The two lines coming from the same circle may be of a different type. The different shade of grey in box 3 is just to distinguish lines.
-The value or the sum of the values in a cage must satisfy the condition in the top left corner of the cage. E means an even value, and O means an odd value.

Links:

F-puzzles
CTC