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Moving: Tiles
Rashkey 3Third of a series of three similar puzzles. The three differ only by the colors of the pieces.
ReciprocatorTwo sets of parallel plungers are also connected by an inner pinion. Pressing one plunger causes the adjacent plunger to move in the opposite direction.
Rhombus-Tri SliderA sliding piece puzzle similar to Elemental:Argon but with three plungers instead of four and some other small changes.

RigelTwo intersecting circles but with two concentric circles of pieces per half.
RootingerTwo intersecting circles combined with a plunger.
RotabramThree intersecting circles with gears. Pieces can be exchanged on two are rotated in each turn.

Rotascope - Blue LogoFeatures an image of a snake entwined with a blue version of the Pentangle logo.
Rotascope - British Wool Industry LogoDepicts the logo of the british wool industry.
Rotascope - ConcordeFeatures an image of the concorde.

Rotascope - CustomizedThree customized Rotascopes with themes based on the other hobbies of the customer.
Rotascope - EscherFour customized Rotascope with themes based on famous works of M.C. Escher.

Rotascope - Escher IICustomized Rotascope with a theme based on famous works of M.C. Escher. This time with a non-circular body.
Rotascope - InvitationA customized Rotascope used as invitation for the 6th international puzzle party.
Rotascope - ManFeatures an image of a man with awkwardly raised hair.

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