Detailed instructions for working a group puzzle of type 'Linus'
This is a signature puzzle named 'Linus'
The 5 elements in each group of this type of puzzle are: L, I, N, U, and S.
Every group in the puzzle must contain exactly this set of elements.
In a Linus puzzle, each row is a group numbered as shown in the figure above.
In a Linus puzzle, each column is a group numbered as shown in the figure above.
In a Linus puzzle, each pentomino is a group numbered as shown in the figure above.