Logic Masters Deutschland e.V.

Slice of Balance (Yin Yang Sandwich)

Rules:

Normal Sudoku Rules: Place the digits 1-9 in every row, column and 3x3 region

Kropki: If digits are separated by a white dot, they must be consecutive

Yin Yang: Shade some cells such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected. No 2x2 area can be entirely shaded or unshaded

Sandwich: Clues outside the grid give the sum of the digits strictly between the 1 and 9 in the respective row or column. The full sandwich must be shaded if a sandwich clue is give. (i.e. in the case of a sandwich clue of 6, the string of digits 1-4-2-9 must be shaded)

Link to puzzle below with solution checking