Logic Masters Deutschland e.V.

Normal sudoku rules apply. Shade some cages such that all cells of the cage are either all shaded or all unshaded.
Digits outside the grid indicate the number of shaded cells in their respective row/column. Shaded cages display their correct total while unshaded cages have an incorrect total.
Digits can never repeat in cages. Digits in a gray circle are odd. Digits in gray squares are even. Cells separate by a chess king's move cannot contain the same digit.

Links:

CTC
F-Puzzles