Normal sudoku rules apply. All orange blobs have the same sum. Digits joined by a black shape are in a 1:R ratio for some integer number R. The number R is the same if and only if it is the same shape. Digits joined by a white shape have a difference of D for some integer number D. The number D is the same if and only if it is the same shape.
If you prefer to play directly in sudokupad then click below.
