Logic Masters Deutschland e.V.

Thermometers: Digits along a stick figure (thermometer) strictly increase starting from the head (bulb).

Arrow: Digits along the trajectory of a snowball (i.e. along the arrow) sum to the digit in the snowball.

Consecutive pairs: Cells separated by a white dot are consecutive.

XV pairs: Cells separated by a V contain digits that sum to 5. Cells separated by an X contain digits that sum to 10.

Not all possible white dots, Xs, and Vs are given.

f-puzzles: https://f-puzzles.com/?id=y2vjopab
CTC: https://tinyurl.com/2p9a526r