Detailed instructions for working a group puzzle of type 'Sudoku-8-X'

The 8 elements in each group of this type of puzzle are: 1, 2, 3, 4, 5, 6, 7, and 8.

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

Each row is a group numbered as shown in this Sudoku-8-X figure.

In a Sudoku-8-X puzzle, each row is a group numbered as shown in the figure above.

Each column is a group numbered as shown in this Sudoku-8-X figure.

In a Sudoku-8-X puzzle, each column is a group numbered as shown in the figure above.

Each 4x2 rectangle is a group numbered as shown in this Sudoku-8-X figure.

In a Sudoku-8-X puzzle, each 4x2 rectangle is a group numbered as shown in the figure above.

Each diagonal is a group numbered as shown in this Sudoku-8-X figure.

In a Sudoku-8-X puzzle, each diagonal is a group numbered as shown in the figure above.