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

This is a signature puzzle named 'Archibold'

The 9 elements in each group of this type of puzzle are: A, R, C, H, I, B, O, L, and D.

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

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

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

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

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

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

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