Logic Masters Deutschland e.V.

This puzzle is a variant of the amazing slingshot series created by Stephane Bura. The rules of this puzzle and the sample image have been taken from his puzzles. I am really fond of the series and I thought about combining the idea with sandwich sums constraint.

Normal Sudoku rules apply.

Slingshot rules - If an arrow is present in a cell, the digit in the cell the arrow comes from appears in the grid in the direction of the arrow at a distance of N cells, where N is the digit in the arrow's cell. Some possible arrows are NOT given.



Sandwich rules - Numbers outside of the grid indicate the sum of the digits between 1 and 9 in the corresponding row or column

There are some rules specific to this combination of variants.
1) Slingshots within the grid can project digits to sandwich clues outside the grid.
2) Two slingshots could project a digit each towards the same sandwich clue and give a two-digit number in that cell.
3) Sandwich clues can at most receive two digits.
4) Sandwich clues with a slingshot have to follow the constraints of the grid (For eg. There can’t be a two-digit number or a zero in a sandwich clue with a slingshot arrow).
5) R7c5 has two arrows both pointing upwards.

If you have any other doubts, feel free to ask in comments.

Penpa plus link to the easier version - it has a digit given in the grid which makes the solve much smoother.

Penpa plus link to the harder version - the grid is the same as shown in the image below. This version requires one to look a few steps ahead and visualize trickier slingshot interactions.

Good luck. Have fun.