Logic Masters Deutschland e.V.

This was originally created for the Yin Yang Journey puzzle pack. Links to previous puzzles in the pack are below:
Go Yin Yang
Through the Caverns
Sandwich Break
Staircase Serpent

Rules:

Normal Sudoku rules apply.

Yin Yang: Shade some cells such that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 area is fully shaded or fully unshaded.

Values separated by an X sum to 10. Values separated by a V sum to 5. Not all possible Xs and Vs are necessarily given.

Negative difference constraint: Orthogonally adjacent values cannot have a difference of 1.

Digits in shaded cells count as the negative of their value for the purposes of the XV and difference constraints.