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.

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.

Digits in circles give the number of cells (including itself) of the same shading as itself seen in all horizontal/vertical directions combined. Cells of the opposite shading block the vision.