Hanayama cast puzzles are the world's finest brain teasers. The high-quality, cast metal puzzles come in six challenging, Mensa-rated levels of difficulty.
These Level 5 puzzles are considered moderately difficult by most puzzlers.
Helix: This puzzle consists of two star shaped pieces which pivot on a small central rivet and a chrome colored ring. The object is to separate the ring from the star-shaped pieces. The star shaped pieces have many grooves and recesses and a few smooth openings. One needs to turn the metal ring placing the open ends through the holes in the stars. As you turn the two star-shaped pieces you will create more different "possible" pathways.
Equa: This sphere-shaped cast metal brainteaser puzzle represents a planet and its surrounding ring. Positioned snugly inside the ring, the planet looks as if it cannot be removed. It may appear that all you can do is rotate it on its axis, but is that really the case?
Ages 12+
By University Games