Quartet consists of two interlocked square-shaped polished metal puzzle pieces that come apart into four pieces. The object is to separate the interlock into four square shaped pieces. This is a very tricky puzzle and one of the most challenging...

Possibly the compass directions N, S, E & W which are printed on both sides of the puzzle will assist one in solving. But, maybe not! Rated as a level 6 difficulty by the manufacturer Thought by many to be...

This brain teaser is a great challenge for anyone who enjoys mechanical style take-apart challenges. Solving the puzzle is somewhat similar to solving a paper maze with pencil. There small nubs on the outer ring. This allows it to move...

The three pieces of this challenging cast metal brainteaser puzzle each have a spiral body. When assembled, the pieces form a unified flat object. In order to undo this complex entanglement, it will be necessary to unbind them three-dimensionally. Here's...

Marble features a design that is modern and sleek, with a simple appearance that can be misleading. Master the Marble and reveal the intricate cuts of the four sections. Now see if you can keep your cool while putting it...

The Padlock design looks similar in size and weight to a lock one might find at the gym, but look out - there's no key or combination of numbers to solve this one! This seemingly simple design may take hours...

A quarter of this cake has been cut away showing three identical layers inside. This puzzle looks simple but it is very ingenious. Designed by American designer Bram Cohen. Taking it apart is only half the fun - can you...

This puzzle is created from two each of two types of pieces. With a scrupulously calculated design and tricky movement of the pieces, this will not be an easy puzzle to solve. Designed by Korean designer JinHoo Ahn. Taking it...

Though inspired by a budding Morning Glory, Helix is no gentle flower. The twining tendrils of this puzzle feature engraved grooves on two rotating spirals. The grooves cross at right angles, creating square holes at their intersection points. Can you...

This puzzle is based on an original called the Puzz-Ring. Popularized in 15th century Europe, this ring style was actually used for official engagement and marriage rings. A true mental challenge as you try to disassemble then re-assemble these curvy...