Jewel TrapA corner turning tetragonal trapezohedron. A jumbling only puzzle.
Jumble TrapThe non-pillowed version of the face turning tetragonal trapezohedron. A jumbling-only puzzle.
Kite TrapA shape transformation of the Astroid Attack which transformes it into a true tetragonal trapezohedron.
KristallThe Tetraminx produced in Alma-Ata during the soviet era.
Kristals-MA tetraminx with soviet origin with a special spiky shape.
Krystian's TwistA subset of the Big Chop in shape of the tridiminished icosahedron.
Lighthouse CubeA Pyraminx truncated into the shape of what could have been a pyramid with hexagonal base.