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Detailed instructions for working a group puzzle of type 'Jacob'


This is a signature puzzle named 'Jacob'

The 5 elements in each group of this type of puzzle are: J, A, C, O, and B.

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

Each row is a group numbered as shown in this Jacob figure.

In a Jacob puzzle, each row is a group numbered as shown in the figure above.


Each column is a group numbered as shown in this Jacob figure.

In a Jacob puzzle, each column is a group numbered as shown in the figure above.


Each pentomino is a group numbered as shown in this Jacob figure.

In a Jacob puzzle, each pentomino is a group numbered as shown in the figure above.