Online since 2002. The most comprehensive site for all around twisty puzzles.

Other N-Sided: Four
RX (Reuleaux Master Tetrahedron)A Master Skewb transformed into the shape of a Reuleaux Tetrahedron.
Redi TetraA Redi Cube transformed into a tetrahedron.
Reuleaux CrystalminxA Pyraminx Crystal in shape of a reuleaux tetrahedron.

Reuleaux Leaf TetrahedronA tetrahedral 3x3x3 without one half of the corners.
Reuleaux Mastermorphix (aka Master Pyramorphinx)A 3x3x3 in shape of a Reuleaux tetrahedron.
Reuleaux Mastermorphix Corner Pocket CubeThe Corner Pocket transformed into a tetrahedron with the smaller pieces on the tips.

Reuleaux MegamorphixA 4x4x4 in shape of a Reuleaux tetrahedron.
Reuleaux UltramorphixA 5x5x5 in shape of a reuleaux tetrahedron.
Rex TetraA puzzle derived from the Rex Cube but with an additional set of pieces.

RexamorphixA Rex Cube in shape of a tetrahedron.
Rob's PyraminxA Halpern-Meier-Tetrahedron (aka Jings Pyraminx) without edges.
Royal PyraminxA Pyraminx with 6 layers.

Royal TetrahedronThe tetrahedral cousin of the Royal Skewb but invented earlier.
Rubik's PyramidA version of the Pyramorphix from the owner of the Rubik trademark.
Ruby's TriangleA great little Pyramorphix clone.


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