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

Intersecting 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�.
Weird Disk 4x4Two intersecting circles rotating with 90° but with different sizes.

Weird Disk 5x7A puzzle designed to stay in the middle between Weird Disk 4x12 and Weird Disk 6x6.
Weird Disk 6x6Two intersecting circles which rotate by steps of 60°.
Whirligig Plate 5 CirclesThe version with five circles.

Whirligig Plate 9 CirclesNine circles version. Apart from the basic solution, there are other patterns that can be made with the colours.

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