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

Customly 3D printed
Double BiRexThe Double Lotica with two additional piece types and one piece type removed.
Double Circle PyraminxA Pyraminx with two concentric circles on the opposing sides.
Double Circuloid V1The Double Lotica reimplemented but with a central piece.

Double Circuloid V2The Toornigan designed with three circles.
Double Circuloid V3A deeper cut version of the Double Circuloid V2
Double Circuloid V4A deeper cut version of the Double Circuloid V3

Double Circuloid V5A deeper cut version of the Double Circuloid V4
Double CrazyLoid V1The CrazyLoid with an additional second circle.
Double CrazyLoid V2The CrazyLoid V2 with an additional third circle.

Double CrazyLoid V3Three circles of order 4, 2 and 4, all with two concentric turns in different depths.
Double Flower TetrahedronOne doctrinaire turn for each corner and two jumbling only turns for each edge. In shape of a tetrahedron.
Double LooperThree circles on one line, each allowing 180° turns with shallow intersections. Plus three additional inner circles almost of the same size as the outer circles.

Double Square-1Looks like two puzzles combined in a siamese but this actually is a prism with five layers and four sides.
Double TriCrazyThree circles of order 3, 2 and 3, each with two concentric turns.
Double Trilotica V3Three circles of order 3, 2 and 3 deeper intersected as the Mitsugo.


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