Logic Masters Deutschland e.V.

Watch a video of Mark Goodliffe (CTC) solving this puzzle.
Thank you, Cracking The Cryptic, for the video! And thanks for creating such a cool name for the puzzle as well. :-)

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Rules:
Each row, column and region contains digits 1-8 exactly once.
Digits along an arrow sum to the digit in that arrow's circle.
Digits within a cage sum to the small number in top left corner. Digits cannot repeat within a cage.

CTC
F-puzzles
Penpa+

Have fun!



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HINTS
If you struggle and want some hints, click "Show rules" in these versions of the puzzle:
Version with hint No. 1: https://tinyurl.com/yabbcflu
Version with hint No. 2: https://tinyurl.com/y9y9zlnt
Version with hint No. 3: https://tinyurl.com/yazbb4cc