1) Combination puzzle 
The Pyraminx (s) is a tetrahedral puzzle in the style of Rubik`s Cube. It was invented and patented by Uwe Mèffert before the original 3 layered Rubik`s Cube by Erno Rubik, and introduced by Tomy Toys of Japan (then the 3rd largest toy company in the world) in 1981. Meffert continues to sell it in his toy shop, Meffert`s. == Description == The......