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