Logic Masters Deutschland e.V.

Hello, enjoy this puzzle!
All feedback and comments will be much appreciated!

F-puzzles
CTC

Rules:

• Normal sudoku rules apply.
  
• Along thermometers, digits must increase from the bulb end.
  
• Digits separated by a white dot must be consecutive. Digits separated by a black dot must be in a 1:2 ratio. Not all dots are given.
  
• Digits along the blue line sum to the same value in each 3x3 box the line passes through.
  
• Digits separated by an X must sum to 10.
  
• The cell marked with an 'O' contains an odd digit (R7C7).