Jing's Pyraminx or Halpern-Meier Pyramid — is a unique puzzle that was invented in the early 80-s by four independent inventors (Benjamin R Halpern, Kersten Meier, Marko van Eekelen, Bernard van Houtum).
Puzzle was named Magic Tetrahedron by analogy with the "Magic Cube" (Rubik's Cube), but in other sources the name "Halpern-Meier Pyramid" can be met. In 2010, inventor Uwe Meffert began mass production of the puzzle, but did rounded (pillowed) version, which he called his own way — Jing's Pyraminx, and later Chinese factory QJ began to forge Mefferts brand. Several years ago, under unknown circumstances production was suspended, and now to find this puzzle is extremely difficult.
Magic Tetrahedron has a Skewb mechanism, which is made in the form of a tetrahedron. Unlike Pyraminx, this puzzle has no corner tips (they are fused with the central pieces), but has its own triangular centers (one on each side).
The solution of the puzzle is very interesting, and despite the fact that most readers became familiar with Pyraminx and Skewb long ago, solving of Halpern Pyramid will be not so easy.