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

Intersecting circles
PentagleFive intersecting circles with just one piece in the intersection.
PentaxonThree intersecting circles. The eccessively large one turns in steps of 180°, the two small ones turn in steps of 72°.
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.
Planar Rex IIA reimplemented rashkey with two sides and two solutions.

Planar Rex IIIPlanar Rex II with one additional circle.
Planar Rex KeychainTwo intersecting circles with only one piece in the intersection.
Plectrum & switchThree circles with six tiles. Some turns are blocked by the inner pieces of every circle.

Pleione2 6-10Two circles rotating in six and ten steps.
Pleione2 6-6-10A direct successor to the Pleione2 6-10, with one additional circle.
Pleione49A large circle rotating in six steps and a small circle rotating in five steps.

Pleione56A large circle rotating in five steps and a small circle rotating in six steps.
Pleione65A large circle rotating in six steps and a small circle rotating in five steps.
Pluton's EnigmaEngel's Enigma with two sides partially connected with a single piece.


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