Logic Masters Deutschland e.V.

This puzzle won 2º place in the 77 minutes "Sudoku Combination Clues " speed setting competition
hosted on the CTC discord server . Join it to find out more about such things!

Normal sudoku rules apply.
Every row, column, and 3x3 box must contain all digits from 1 to 9.
Arrow/Thermo rule applies.
Digits along an arrow must sum to the digit in that arrow's circle.
The arrows are also thermos and the digits must increase from the tip to the circle.
German Whispers/Palindromes rules apply.
Digits along grey lines have a minimum difference of 5.
They are also sequences of digits that read the same backward as forward.

Link to play: F-Puzzles, CTC