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

Intersecting circles
Orion-14Four intersecting circles (in steps of 90) in a 2D-puzzle of soviet origin.
Orlov fourThe successor of the Orlov with four gears, even with the same middle pieces.
Orlov gearInspired by the gear puzzles from Douglas Engel. Three circles and irregular center pieces.

PandaOne 6-fold rotation and two 3-fold rotations with uncoloured pieces covering an animal as background.
Pascals JumbleA puzzle with moving circles specifically made to allow jumbling moves.
Petal Puzzle (aka Triplex 3)A puzzle with intersecting circles and a 3-fold symmetry.

Phone Case Puzzle v1A phone case with an integrated puzzle.
Planar CopterThe 2D-equivalent of one corner of a Curvy Copter.
Plectrum & switchThree circles with six tiles. Some turns are blocked by the inner pieces of every circle.

Plutoscope 3.23A variant of the first Plutoscope (5.1) with three circles.
Plutoscope 4.2A variant of the first Plutoscope (5.1) with four circles.
Plutoscope 4.3A variant of the first Plutoscope (5.1) with four circles.

Plutoscope 5.1Five intersecting circles arranged around a rounded pentagon in the center.
Pocket CalendulaThree circles intersecting each other like the Arusloky.
Pocket GeraniumA smaller version of Geranium with three circles in different distances.

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