Detailed instructions for working a group puzzle of type 'Brunhilde'

This is a signature puzzle named 'Brunhilde'

The 9 elements in each group of this type of puzzle are: B, R, U, N, H, I, L, D, and E.

Every group in the puzzle must contain exactly this set of elements.

Each row is a group numbered as shown in this Brunhilde figure.

In a Brunhilde puzzle, each row is a group numbered as shown in the figure above.

Each column is a group numbered as shown in this Brunhilde figure.

In a Brunhilde puzzle, each column is a group numbered as shown in the figure above.

Each 3x3 square is a group numbered as shown in this Brunhilde figure.

In a Brunhilde puzzle, each 3x3 square is a group numbered as shown in the figure above.