A puzzle is a difficult problem that challenges our pattern recognition skills. And in solving a puzzle, we get the satisfaction of stimulating our intelligence and a sense of accomplishment. Use 'puzzle' as a figure of speech and we might be able to puzzle out this deck.

In the broad sense, we are encouraged to see an academic 'Enigma' piece by piece discovering relationships that make the puzzle fit.

• Manufactured by The United States Playing Card Company, USPCC.