The 8th lock in the series from master lock puzzle designer Rainer Popp

From the official description written by Kawashima:This work is a deluxe edition of the Karakuri Cube series.I enlarged the cubic edge by 12 millimeters.I made a completely new structure and storage space.The movement and the storage space are new to the Karakuri Cube series.

Original Mechanism Box '98 as created by designer Atsushi Katagiri and craftsman Hideto Sato of Karakuri Creation Group for IPP 18. Has unique 5 move opening mechanism. Note that the mechanism on this box is extremely tight, making opening laborious. It needs significant working in, possibly a drier climate. For this reason I am offering the box with a very low starting price. Other than the extreme tightness the box is in as new condition. Measures 4 3/4" x 3 1/8" x 2 3/8" (12cm x 8cm x 6cm). ...

Object: Remove the "diamond" from the Queen.Puzzle in good working condition. May need a bit of polishing to restore its shine

Object: Remove the Coin from the Pawn.Puzzle in good working condition. May need a bit of polishing to restore its shineComes with its own box

Tsuburai's 2009 Christmas present

RELEASED:5.1.2011PRODUCED:30 CopiesDESIGNER:Robrecht LouageCRAFTSMAN:Robrecht LouageMATERIAL:Corian, metalCOMMENTS:A participant of the 2010 IPP Design Competition, this devilish take apart puzzle is not for the faint hearted. It's extremely difficult to open, and even more difficult to fully understand. The mechanism is simple enough, but figuring out the exact principle is difficult. The goal is to simply open the egg and remove the "yolk" (in this case a US quarter coin).Individually manufact...

Object: Remove the coin from the King.Puzzle in good working condition. May need a bit of polishing to restore its shine

Object: Remove the "pawn" from the Rook.Puzzle in good working condition. Comes with its own box

This is a rare cocobolo version of the Visible Cube designed by Bram Cohen and crafted by Eric Fuller. Deceivingly simple, this puzzle is actually quite a challenging one to crack! A must try! The following are additional details from the Cubic Dissection archives: http://www.cubicdissection.com/html/purchase/discont/visiblecube.html RELEASED: 9.18.2009 PRODUCED: 30ish Copies DESIGNER: Bram Cohen ...

Object: Remove the "surprise" from the Fire Plug.Puzzle in working condition. Some stains here and there, needs polishing to restore its shine Comes with its own box.There is chipping at various places on the edges of the brass rods as shown in the photos

Five pieces plus a quarter. The object is to remove the quarter from the block of wood. IPP32 exchange puzzle, includes solution.

<a href="http://www.puzzleworld.org/DesignCompetition/2011/results.htm">Grand prize winner, 2011 Design Competition</a>.Remove the 1 Euro coin.This puzzle is quite heavy (1/2 kilo?), international shipping will be significant.

This was Akio Kamei's 2014 Christmas present

This was Hiroshi Iwahara's 2014 Christmas present

Robert Sandfield presented this puzzle in IPP34

From 2014

Puzzle Name: WandererType: MazeNumber of Pieces: 2Designed by: Oskar van DeventerMade by: Tom LenschMaterial: Frame, Makore on Walnut Wanderer, Walnut and MahoganySize: 3” frame, 4” WandererAvailability: 0Price: $100WANDERERThe Wanderer was designed by Oskar van Deventer. This puzzle consists of a solid pieces called the Wanderer and a cube frame with notched edges that forms an internal maze frame. The Wanderer piece has two flat sides and two curved sides. One of the flat sides has two sma...

. . . After making the Stickman Pirates’ Wallet Puzzlebox, I ended up with roughly 8 extra copies of the padlock puzzles that went on them. This is one of the last 3 of these I have. Although this is not a puzzlebox, it is exceptionally well made, and a most satisfying puzzle to solve - requiring a minimum of 8 steps to take fully apart.. . . If you currently have a Pirate’s Wallet Puzzlebox, then this is identical to the padlock already on your puzzlebox. If not, then this would be a...

This is a 419-move puzzle box