Logic Masters Deutschland e.V.

This puzzle was created for Scojo's weekly setting prompt, initiated by Juggler, which challenged setters to set a puzzle using a new clue type invented in the previous prompt.
I chose a clue type created by Flinty.
I hope you enjoy solving it!

Solve online: SudokuPad

Rules:

Normal sudoku rules: Place the digits 1 to 9 in each Row, Column, and 3X3 box.

Clues outside the grid show the sum of digits up to, and including, the second parity switch in that direction. For example, a completed Row 1 of 164352897 would be 1+6+4+3=14 from the left and 7+9+8+2+5=31 from the right. If Row 1 was 135792468, then any clue would be invalid, as there would be no Second Parity Switch.