Two Rings was the exchange puzzle of Anatoly Kalinin at IPP25 in Finland, 2005.The goal of this puzzle is to remove the two rings, and put them back in their starting position.The puzzle comes in a zip lock bag with original instruction sheet, without solution.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

The KiePPI was the exchange puzzle of Mikko Kiviharju at IPP25 in Finland, 2005.The goal of this disentanglement puzzle is to separate the string with the wooden rings from the metal wire.The puzzle comes in original zip lock bag, with instruction/description (picture 2 3) and solution.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

Ring Pierced Face was the exchange puzzle of Yoshiyuki Kotani at IPP25 in Finland, 2005.The goal of this puzzle is to swap the rings in the right- and left- ears, keeping the other rings in the same pattern.The solution involves 65 moves.This puzzle comes in original zip lock bag with original instruction sheet.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

Perplexing Wire was the exchange puzzle of Jan de RuiterObsivac at IPP25 in Finland, 2005.The goal of this puzzle is to remove the blue string ring from the puzzle and put it back on.The other string (from wooden ring to metal frame) is purple. The difference between blue and purple is much more apparent than the picture suggests.The puzzle comes in its original zip lock bag, with with instruction sheet and solution sheet.= = = = = over 70 IPP25 exchange puzzles available, see my other listings ...

Narrow Escape was the exchange puzzle of Dirk Weber at IPP25 in Finland, 2005.The goal of this puzzle is to release the dark wooden ring (and to put it back again).There are 2 different solution sequences for this puzzle, try to find them both!This puzzle was later produced commercially by Eureka.The puzzle comes with original instruction sheet (see picture 2).= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

Dan Alterman loves making giant wooden puzzle boxes that resemble real world objects: from the vending machine of Snack Brake to the toaster of Toasted, he has now created an ATM machine puzzle box appropriately titled "Life Savings." He released a very small run of this unique puzzle, making it quite rare.Combining excellent sequential discovery mechanical puzzling with a bit of cryptography, you must unlock the secrets of the puzzle to find the clues you need to decipher the code and open the...

A steampunk-themed and roughly cubic puzzle box, designed by Christophe Laronde [aka NeoKid] of NKD Puzzle. Here's NKD's listing of this puzzle.And here is a review from Boxes and Booze.~A complex-looking, intricate journey.15 moves to open, 10 of which are sequential and 5 of which are using 5 dials to set a 5-part combination, which must be devised/intuited by the solver.NKD rates the difficulty as 3/5, and I more or less agree. Although, as the assembler, I had intimate knowledge of the mecha...

A great packing puzzle where the object is to fit all 4 L shaped pieces into the basket.

Safe Japanese Puzzle Box produced as a KCG Christmas present for 2020. P-56. 

Ready for a challenge? Merlin is as difficult as it is beautiful!Kevin Sadler wrote about it in PuzzleMad:“Merlin is a serious work of art for serious puzzlers! This tremendous puzzle was designed by the genius Stephan Baumegger at the request of Dave Holt (The Metagrobologist) to accompany the Arthur and the Excalibur (also Cubic caged burrs) in the theme of T.H. White’s “Once and Future King”. This gorgeous burr consists of 8 burrsticks in 2 sets of 4 and Merlin’s wand passing throu...

Always Seven! was the exchange puzzle of Serhiy Grabarchuk at IPP25 in Finland, 2005.The main challenge is to add the seventh hexagon to the larger tray space that already contains 6 hexagons.Additional challenges are included, with paper 'tray templates' to fill different shapes.The puzzle comes in original ziplock bag.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

This is the IPP34 exchange version and is in the original plastic bag with the original paper insert giving details of the puzzle.Assemble a 6 piece burr. 

Pack all the pieces into the tray.Marked on back 222 STC 2007

A selection of puzzle to be solved using the pieces in this puzzle, all based around the colours being seperated.An exchange puzzle from IPP28

Place all 8 pieces inside the box so that the cubes do not touch each other.An exchange puzzle from IPP32 which was also a design competition entry and top 10 vote getter.

Open the box.An exchange puzzle from ipp 28

A modern Kumiki Owl in original packaging

"This is a sequential discovery puzzle box. It contains no magnets or hidden mazes"Simply open the box.Comes complete with original instructions and in the black material bag. An exchange puzzle from IPP27

Remove the blue triangle through a slot in the side of the puzzle. Pieces are loose in the tray and the starting position is shown on the instructions. Note - instructions are in Japanese and EnglishAn exchange puzzle from IPP27 from WGH Strijbos

A copy in plastic of George Hart's IPP28 exchange puzzle from Prague in 2008.  FIRE is a screw-together tetrahedron made of two identical plastic parts.  The tetrahedron is divided in two along a helicoid surface whose axis is aligned with an axis running from the midpoint of one edge to an opposite edge midpoint.  This puzzle is VERY satisfying to play with!Note that George's original exchange puzzle was produced in nylon.  This copy is accurately reproduced in plastic.  It is available th...