Logic Masters Deutschland e.V.

Links: f-puzzle link
CTC app link

Rules:

• -Standard Disjoint Killer Sudoku rules :
• -Killer Cages : digits in a cage must sum to the total given top left.
• -Disjoint Groups: cells in the same respective positions in two different boxes must contain different digits.

This puzzle relies on 2 main ideas. One is quite usual and will most likely be easy to spot, the other one is less obvious and more of a surprise (and not necessary for the solve but it makes it a lot smoother)