from the Karakuri webpage:You can transform the cube into two shapes, 4 patterns. The mechanism is unlocked, and you can always transform it freely. The space inside is small and the craftsman doesn’t recommend you to put it for practical use. He thinks that this work is a transformable object.I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

from mrpuzzle.com.au:The puzzle is to assemble the six differently shaped pieces into this very complex interlocking burr. This puzzle is one of the hardest that Vinco has ever invented and because of the way it has to be assembled it is not possible to solve this puzzle using a computer program.I'm selling these puzzles because I no longer have space to store or display them :(buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

from puzzlepalace.com:The Butterfly Puzzle is taken from Ferdinand Lammertink's unpublished book, 'Polyshapes, Part 1'. It is a beautiful arrangement of the 35 hexaminoes. The hexaminoes represent all the different ways six squares can be glued together side to side. The puzzle is made from a phosphorescent acrylic while the tray is presented in a phosphorescent acrylic of a contrasting color and a backing of blue acrylic.Naturally there are thousands of ways these 35 pieces can...

A rare and hard to find puzzle from that elusive desiner Roger. This is not a difficult one to solve. The challenge would appear to be to move the ball bearing from one eye to the other. Supplied is a small metal baton to help push the ball around the inside of the puzzle.

A very simple take apart puzzle that is very attractive to look at.Comes complete with box and instructions.

A nine piece packing problem where all the pieces are shaped like beds. Comes with an acrylic box that fits all the pieces in the (large) 5x5x5 cube. It is also possible (and much easier) to pack all 9 pieces into 5x4x4 plus 5x3x3 bricks. Both these problems have unique solutions. With a subset of the pieces, one can make a 4x4x4 cube or a 5x5x4 brick. Solutions included.

This object was made by Shapeways using 3D printing, I then dyed it blue using RIT fabric dyes (unfortunately, I cannot dye each tetrahedron a different color). This particular version has an icosahedron trapped inside, and is six separate objects which can be moved around, but it cannot be taken apart. You can buy one at Shapeways for $36 and dye it yourself. The opening bid on this item is $32 which is below my cost. Shipping will be added to this, and should not be too high since it is qui...

Three pieces of wood together in a chain. They can be folded up to lie flat as well. Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Rodolfo Kurchan's IPP19 London. Exchange Puzzle. Change the 1999 to show 2000 by sliding the pieces. Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Unique looking puzzle from IPP15 in Japan by David Bruce. Take it apart, it has an internal locking mechanism inside. Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Use the pieces of wood to suspend the bucket with the metal ball in it below the table. - Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Piece of wood through a pill bottle. The wood tabs are too large to fit through the opening. Impossible! Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Use these three diamonds to make two cubes. Solution included. - Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

A wooden arrow through a wooden apple. Impossible! - Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Make a square with the three pieces. IPP19 souvenier by RGee. Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Use the 7 pieces to form one triangle. - Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Use the five blocks to form a pentagon and receive a surprise! Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

Use the turnstile to reposition the cars in a selected order. Includes instructions. - Buyer pays shipping + $3 handling for the first item and $1 handling for each item after that. Thanks for bidding!

This was an IPP exchange gift from IPP19 in London.

This is an old puzzle which involves trying to remove two marbles from within a small pair of pants. The problem is that all the seams are sewn up and there appears to be no opening.