Remove The Yolk was Robrecht's design competition entry at IPP30 in Osaka in 2010.  As Master Puzzle Maker Eric Fuller has remarked - "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...

I believe this was a prototype made by Gregory prior to it being manufactured for general release. As such, this is slightly larger than those made by Maurice Vigouroux.

Eric's description: This simple cube is easy to solve, but I found the design interesting. Three different pieces use coordinate motion, sliding together neatly. Zebrawood was used for it's similarity between end and sidegrain...just looks nicer overall.Only 12 copies made for sale. Each signed and dated.

Designed and made by Brian Young, this puzzle is no longer produced.  View his original listing at https://www.mrpuzzle.com.au/gold-coast-parking-meter-puzzle.html

The puzzle is from the Enigma Series and I acquired it from Mr Puzzle Australia The object of the puzzle is to remove a small cannonball (aka ball bearing) hidden within the barrel of the  cannonWinning bidder will be invoiced the total of the winning bid amount + shipping cost (includes tracking number) to be calculated after the end of the auction + 3.5% paypal charge.

Still in original packaging

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 12 weighs 82g and has a very simple trick but an unusual shape.

Dave Rossetti's IPP20 (Tokyo) Exchange PuzzleDesigned and predominantly made by Frank Chambers (Parts of the locking mechanism were made by Walt & Chris Hoppe)Puzzle 1: Open the box. The name contains a clue. No tools,no magnets, no rapping, and the black button does not move.Puzzle 2: Once open, you will find another puzzle involving toothpicks)I've tested the mechanism and it is working, the box contents are original and complete.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #1 weighs 164g and has a fairly simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #2 weighs 501g and has a fairly simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #3 weighs 312g and has a fairly simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #4 weighs 435g and has a very simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #5 weighs 622g and has a very simple standard trick.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 11 weighs a gargantuan 1.75kg including three keys (about 3.8lbs). This one is heavy with no key holes and a relatively simple multiple step solution.

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle 13 weighs a hefty 1264g including the three keys. It has a multistep solution. Unfortunately the first step is too loose and easily discovered, but the...

One of several Indian Puzzle locks I am selling.  The manufacture of all is best described as rustic.  Some of these locks shows signs of rusting but all are complete and workable. See pictures for condition.  Not much I can say about the mechanisms without giving away the puzzles but all are relatively simple.  Postage will be at cost.Puzzle #9 weighs 380g and has a fairly simple trick. In fact mechanism is identical to lock #1 this is just a bigger lock.

from cubicdissection.com:Cubyful is an interesting interlocking packing puzzle by Lucie. Seven fairly simple pieces must pack into the box...the tricky part is the captive piece which must be accounted for during assembly. With a level 1.2.6.2.2.5 solution, figuring this out is anything but simple! A fun challenge for the experienced puzzler, yet doable for a determined novice.Beautifully crafted in Leopardwood, Wenge and Ash, this puzzle is precise yet open enough to still work in humid climate...

This puzzle box by Perry McDaniel is #1 in his Pastry Series.  It has quite an unusual solution.

Very rare hard to find collector's puzzle in very good to excellent condition.Object is to open the cylinder and close it again. Very well engineered piece of puzzle.Winning bidder will be invoiced the total of the winning bid amount + shipping cost (with tracking number) to be calculated after the end of the auction + 4% paypal charge. Thanks for looking and good luck with your bid.

This particular work was designed for an exhibition with the theme of "Story." It is straightforward enough to find the first six compartments, but the seventh compartment (containing the signature stamp) is much harder to find.