Detailed instructions for working a group puzzle of type 'Sanford'
This is a signature puzzle named 'Sanford'
The 7 elements in each group of this type of puzzle are: S, A, N, F, O, R, and D.
Every group in the puzzle must contain exactly this set of elements.
In a Sanford puzzle, each row is a group numbered as shown in the figure above.
In a Sanford puzzle, each column is a group numbered as shown in the figure above.
In a Sanford puzzle, each septomino is a group numbered as shown in the figure above.