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

Moving: Marbles
CrazyBalls 2x2x2A three dimensional version of CMetrick.
Diamond Bob's Billiards 8 Ball PuzzleArrange the 8 pool balls in numerical order.
Diamond Bob's Billiards 9 Ball PuzzleA true sequential movement puzzle. The 10 "balls" move around on a non-trivial track.

Digit Rotations20 pieces on two intersecting rings.
DoppelkreisA derivate of the hungarian rings with less marbles in only two colours. It resembles the original patent from 1893!
DoubleringA cloned version from Taiwan.

Dual LoopsTwo intersecting rings with one or two independent rings depending on the circle in the middle.
Duplex 3Two circles of marbles that would not intersect if it weren't for the twist of the Duplex puzzles.
EglutÄ—A small puzzle with moving marbles.

EntrapmentA strange puzzle with moving marbles that came in two different versions.
Five CirclesFive separated circles with 17 marbles each. Connected by two giant concentric circle.
Five columns of marblesFive columns with five marbles each connected through a single pipe.

FlowerBring the marbles back to the circle of their colour.
Game 7Six numbered pieces in two intersecting rings.
Giant AstrolabacusA 8 kilogram heavy handmade (!) replica of the original Astrolabacus.


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