Coordinate Motion Puzzles
Elytra B is a new design of Elytra with rounded corners and without locking magnets. Elytra B is composed of three identical parts. Each part has a hinge joint, which allows rotation. Taking the puzzle apart is a trivial task. However if you change the shapes of the parts, it may not be so easy to assemble them back.
Difficulty level 2/6. Elytra B is made of stainless steel.
The Moscow Ball puzzle was designed by Dmitry Pevnitskiy and Sergey Grigoriev. Wooden version was an entrant at Nob Yoshigahara Puzzle Design Competition in 2011. A few years later Dmitriy reproduced the puzzle in brass. Moscow ball is a 3D co-ordinated motion puzzle consisting of four identical parts. The goal is to take it apart (which is the easiest part of the task) and then put it together. © Dmitry Pevnitskiy and Sergey Grigoriev.
Difficulty 4/6. Moscow Ball is made of brass.