Logic Masters Deutschland e.V.

Diagonal Sum Quads

(Since setting this puzzle I have come to learn that the rules are actually a small subset of the "Mathrax" variant, namely quads with a "+" symbol in them. To avoid cluttering the grid unnecessarily I have opted to leave out the "+", only only keep the sums.)

Rules:

• Regular sudoku rules apply.
• Digits diagonally across a circle must sum to the number in the circle.

Play:

f-puzzles: https://f-puzzles.com/?id=y4m3zk2l

CTC app: https://tinyurl.com/2p9x6kh5