Detailed instructions for working a group puzzle of type 'Sheridan'
This is a signature puzzle named 'Sheridan'
The 8 elements in each group of this type of puzzle are: S, H, E, R, I, D, A, and N.
Every group in the puzzle must contain exactly this set of elements.
In a Sheridan puzzle, each row is a group numbered as shown in the figure above.
In a Sheridan puzzle, each column is a group numbered as shown in the figure above.
In a Sheridan puzzle, each 4x2 rectangle is a group numbered as shown in the figure above.