Try as many methods to solve the puzzle as you can think of. If you do not attempt these different solutions, you may not be able to reach the excitement of solving itÉ Designed by Finnish designer Vesa Timonen.

Cast Cyclone is a puzzle in which each piece interlocks with the other three. While all the pieces initially look the same, there are in fact two different kinds of pieces. The design of each ring has been carefully calculated, highly restricting the...

The design is evocative of a study padlock. Just pick it up and youÕll quickly gain an appreciation for the challenge that lies ahead Ð this puzzle will not open easily! The interior is comprised of two elliptical pieces, locked together tightly around...

Four pieces of the same shape are loosely interlocked together to Makeup this puzzle. All of the pieces fit loosely and it seems as though they would be easy to take apart. However, one is soon at a loss, as the puzzle gives no hint about how it is...

Just as the name suggests, this puzzle, shaped like the letter ÒHÓ, is made of two pieces entwined together. At a glance, the piece that Makeup the puzzle may appear to be of the exact same shape, but the pieces actually differ slightly. Do you think you...

This puzzle consists of 4 pieces that are combined to form a square. É Will you be able to take it apart? WhatÕs more, these pieces have a secret: each time their arrangement is changed when recreating the original shape, the solution changes. Are you up...

The grooves engraved in the two rotating boards are called Òlogarithmic spiralsÓ. These Two grooves always cross at right angles, and a square hole is formed at their intersection. The goal of this puzzle is to remove the helix ring that goes through...

This puzzle has such a beautiful shape that it could easily be mistaken for a piece of jewelry. Its surface features extremely unusual cuts; actually, this marble is a puzzle that can be broken up into 4 pieces. This advanced design is the creation of...

At first glance, it looks as if there is only one ring hanging from the grid but there are in fact, two rings attached with a magnetic force. Can you separate the rings from the grid and return them to their original positions? After you conquer that,...

We have created a puzzle that takes on a spherical shape of an astronmical model composed of a planet and its surrounding ring. The planet positioned tightly inside the ring looks as if it cannot be taken out, and all you can do with it is rotate it on...

This is the second of ÒringÓ puzzles. The five separate rings can be taken apart and put back together. This version has been changed a bit from the original made by ConnecticutÕs Jose Grant. This puzzle has five rings, like the Olympic rings that stand...

At first glance, this puzzle by Kennet Walker of Rivermore, California doesnÕt seem un-lockable. The five pieces, however, can most certainly be taken apart. Putting them back together, however, is a whole new problem in itself. My suggestion for solving...