Roland Koch - Orgelbau und Geduldspiele
Roland Koch - Orgelbau und Geduldspiele. Die Orgel ein Geduldspiel?
http://www.knoxpuzzles.com/
Mechanical
Interlocking puzzle gallery. Handcrafted wooden puzzles for sale.
Interlocking Puzzle, packing puzzle, puzzle box, burr puzzle
https://cubicdissection.com/
Rubik's Cube Solution Methods / Techniques (Waterman)
Descriptions of solving the classic Rubik's cube, focused on some exceptional methods, especially corners-first.
https://rubikscube.info/
The Puzzle & Craft Factory - Puzzles & Brain Teasers
This puzzle Website is dedicated to providing Mechanicalpuzzles, Brain teasers, Games and Toys for people of all ages and skill levels
http://www.puzzle-factory.com/
Brass Puzzles by Rocky
Entertainment, Games, Puzzles, Mechanical - Brass Puzzles by Rocky. Maker of hand machined brass puzzles.
http://brasspuzzlesbyrocky.com
The Puzzle Museum
Entertainment, Games, Puzzles, Mechanical - The Puzzle Museum. Source of information concerning mechanical puzzles and their history.
https://www.puzzlemuseum.com/
PuzzleSolver: Solutions to Mechanical Puzzles
Puzzle Solutions for the Solutions to Mechanical Puzzles puzzle
https://www.puzzlesolver.com/
Home site for the Binary Arts line of mind puzzles.
Puzzles.COM - the world's best resource for puzzling on the Internet - is about Puzzles, Illusions, Tricks, Toys, and everything around all these great Funny, Entertaining, Intellectual and Educational Things.
https://www.puzzles.com/
Tavern Puzzle Collection
Entertainment, Games, Puzzles, Mechanical - Tavern Puzzle Collection. Metal puzzles, created by blacksmith Dennis Sucilsky.
https://www.tavernpuzzle.com/
Livewire Puzzles - Wire Disentanglement Puzzles
Livewire Puzzles has been making and selling wire disentanglement puzzles since 1979. The puzzles are of various levels of difficulty and appeal to puzzle lovers from ages 9 to 99.
https://www.puzzles.ca/