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

Tim Fitzrandolph
Inside Track 2Four intersecting circles plus one ring of marbles movable in more than one configuration.
Inside Track 3Five intersecting circles with two types of pieces.
Inside Track PinwheelSeven rotating circles and one ring of moving marbles.

Lace BraceletA Torus with 7 segments and 4 slices that rotate around the torus unlike tricky disky with which it share the solving method.
Magic DigitFour intersecting circles with just seven pieces visible out of twelve pieces in total, with an additional flipping mechanism for the pieces.
Marbleous CirclesA reimplemented Whirligig-9 but solved by shape instead of colours.

Master Quadrant BallA redesigned spherical 4x4x4 with eighteen circles with four segments each in the faces and edges.
Menger VoidThe 2nd iteration fo the Menger Sponge turned into a puzzle.
Menger WannabeA shape variant inspired and named after the 2nd iteration of the menger sponge.

Mini NucleusA 3x3x3 in a shape consisting of four fused spheres.
Mirror PresentA bumped 2x2x2 with a 3D printed package that can be used only with the second solution.
Möbius LoopOne (!) ring of marbles plus one rotation.

Nucleus TwistThree capsule like shapes fused perpendicular to each other.
Odd CubeA piece shufle of a 3x3x3 and a newly designed spherical 3x3x3.
One At A TimeTwo intersecting rings with three non-intersecting circles connected by gears.


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