Logic Masters Deutschland e.V.

I combined ideas from two of my puzzles and came up with this one. You can try the other two puzzles here:

Saturation | Fillomino/Stakeout Circles.

Rules:

Saturation - There are 4 intersecting 6x6 sub-grids in the main 11x11 grid (indicated by thick black lines). Complete a fillomino puzzle in each sub-grid so that the region borders and digits are shared along the intersections.

Fillomino - Divide each 6x6 sub-grid into orthogonally connected regions of size at most 9 so that no two orthogonally adjacent regions have the same size. The value of each cell is the size of its region.

Stakeout Circles - Cells surrounding a white circle must belong to different regions, and the corresponding regions must not share more than a 1-cell wide border. Digits surrounding the circle must sum to the clue inside the circle (if given).

Try it on Sudokupad.

Puzzle:

Example Solution: