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

Intersecting plungers and circles
RootingerTwo intersecting circles combined with a plunger.
Rota-RiusTwo very small circles and one plunger with six tiles.
Rotating pillsOne rotating circle and one plunger rotate and move several pieces that look like pills.

Rub el HizbOne circle rotating by 45° plus one plunger to exchange pieces.
ShatkonaTwo circles turning in steps of 60° with one plunger for intersecting pieces.
SheliakThree intersecting circles and one plunger moving half of the puzzle in steps of one and two.

Sheliak÷3Three intersecting circles split horizontally by three plungers.
Slice RuleThree plungers and one circle intersect and make 15 pieces move around.
Slide Rule DuelA puzzle with two or three circles and a plunger which can exchange pieces between the circles.

SuncrossOne plunger and one rotating circle. A custom made puzzle.
TetraPieA puzzle with two circles and a plunger which can exchange pieces between the circles. The circles are split in segments of eight.
TriPieA puzzle with two circles and a plunger which can exchange pieces between the circles. The circles are split in segments of six with arrows on one side.

Weird Disk 3xInfinityOne 3-fold rotation and one sliding motion that is infinitly long in theory.
Weird Disk 4xInfinityOne fourfold rotation and one sliding motion that is infinitly long in theory.

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