Puzzle Classifications

While there are probably as many ways of classifying puzzles as there are collectors, most of them are based on either Jerry Slocum's classification or on the one from James Dalgety and Edward Hordern. They are occasionally referred to as the American and the English classifications respectively.

	Puzzle Classification by Jerry Slocum source: Directory of Puzzle Collectors by Jerry Slocum. 4th Edition May 2000
		Puzzle Classification by James Dalgety and Edward Hordern source: http://puzzlemuseum.com