Logic Masters Deutschland e.V.

Digits in a green cell and the next green cell in the same column or row must sum to a digit in one of the cells between them. A valid example can be seen to the right.

Digits increase on thermometers from the bulb end.

Normal Sudoku rules apply.

Try it at F-Puzzles.

Here is an easier puzzle using the same combination of rules: Wedged Sum Thermo.

For an introduction to the rule set, you can watch this solve of a similar puzzle from Cracking the Cryptic.