Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply. Digits in the cages cannot repeat and have to sum to the given total in the top left corner of the cage.

There are special slingshot cells hidden in the grid. Slingshots work as follows: it has a firing direction, a bullet, and a range. A range is given by the number N in the slingshot's cell. A bullet has to come from one of the orthogonally adjacent cells. A slingshot takes a bullet and fires it N cells in some direction, which cannot point to the cell with the bullet.

All cages are bulletproof with regard to special slingshot cells, i.e. a special slingshot cannot take a bullet from the killer cage nor can it fire a bullet to the killer cage. For example, if r4c8 was a special slingshot with a firing direction pointing South, then its value wouldn't be able to be greater than 3 (because the 10-sum killer cage prevents it from traveling any further).

There are 8 special slingshot cells in the grid with values ranging from 1 to 8. There are no two special slingshot cells with the same range. Two special slingshot cells cannot share the same row, column, or box.

There are no negative constraints, meaning that it is allowed to have slingshots other than special ones.

Link to f-puzzles

Link to sudokupad