Logic Masters Deutschland e.V.

I actually set this puzzle before the 4x4 version:

https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000KVH

However, I wanted to sort of test the waters with that one :)

Rules:

Normal 6x6 Sudoku rules apply:

Fill each row, column, and box with the digits 1-6.

Fillomino:

Divide the grid into polyominoes so that polyominoes of the same size don't share an edge.

Circles:

Each digit in a circle indicates exactly how many circles contain that digit. Additionally, Each cell with a circle contains the number equal to its polyomino's size.

Sudokupad Link