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

Intersecting circles
TurnPush - WorldFeatures a map of the world.
Twiddler - Double DilemmaTwo intersecting circles. Comes with an additional pieces to determine the solved configuration.
Twiddler - Quad-RadicalFour intersecting circles. Comes with an additional pieces to determine the solved configuration.

Twiddler - Tri-PlexedThree intersecting circles. Comes with an additional pieces to determine the solved configuration.
Twiddler - Triple TemptationThree intersecting circles. Comes with additional pieces to determine the solved configuration.
Twin RingsTwo circles rotating in steps of 90° with an intersection smaller than the radius of the circles.

Twin Spin (aka Turn Stile)Two overlapping wheels. Promotional version for The Museum Company.
VertushkaA puzzle with intersecting circles. To connect the parts together, an elastic band is used.
Vertushka-2 A handmade 2D-puzzle with rotaging circles.

Vertushka-3A handmade 2D-puzzle with rotating circles.
VindemiatrixFour circles that allow turns of 45° but not every turn is available all the times.
VitrailTwo circles can rotate in multiples of 30°. A jumbling puzzle.

Weird Disk 235Three intersecting circles different sizes with different step length. The simplest possible puzzle of this kind.
Weird Disk 2x-6One circle rotating by 60� and six circles rotating by 180�. A deeper-than-origin circle puzzle.
Weird Disk 4x12Two intersecting circles of different sizes with one allowing steps of 30�.


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