The Brain is a very interesting puzzle, using the Gray Code concept (after Frank Gray) or reflected binary code, which is a binary numeral system. It's produced by the American company Mag-Nif and dates back from 1973.   The objective of the puzzle consists of getting all of its eight pegs out, but to achieve that you have to do a sequence of 170 correct moves.   Packaging: Original cardboard packaging Preliminary estimate of shipping costs from the Netherlands.   ...

This puzzle is a exchange puzzle by Peter Knoppers for the International Puzzle Party 28 held in Prague, Czech Republic 2008   Goal: Move the black gear (the food) from the entry hole tot he “throat” position in the last but one level, and back.   Objective / Description: see the attachment   Packaging: Zip lock bagPreliminary estimate of shipping costs from the Netherlands.   Netherlands: from 0 - 10 kg, approx $ 12.00   Europe 1: from 0...

Selling my copy of Sweet Lock by Chris Cormier #97/100. This copy is unsolved. I just could never get past the first couple steps.

RHB2.0 - By doogaloo games - Doog Menzies This is a wonderful SD puzzle with lots of steps along the way, to a real difficult but awesome final step. All my puzzles are kept in 40-50% humidity and out of direct sunlight, in an animal free zone. Smoke free.Buyer pays for shipping. Shipping to be calculated after sale. I will be using USPS priority mail - insured for full amount of puzzle.Payment will be via paypal. Please do not pay until I have updated your total with shipping.

Brand New!LoopHole is a unique puzzle lock, designed by Boaz Feldman.Goal: As always, your objective is to unlock the lock.LoopHole is based on a standard padlock and is made of brass and stainless steel, much like all of our other puzzle locks.The lock, a fabric bag, and an instruction card are all included in the packageThank you for bidding! Please wait until the end of auction for final amounts w shipping. PP F&F preferred but not required.

Rubik's Dice consists of a hollow cube with holes where the pips of a die would be (plus a few smaller holes). Inside are 7 square white metal plates which have red dots painted on them. These plates can be manipulated so that they stick to the insides of the cube, which is helped by the magnets built into the sides. The aim is to do this in such a way that none of the holes show a red spot, just white ones.   There are 7 plates of which 6 are used to cover the sides of the die. Eac...

Sliding Panels - Akio KameiNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.

Up for sale is a pristine copy of Dr.Volker Latussek’s Eros puzzle. More information on Eros can be found on the manufactures website below; https://www.pelikanpuzzles.eu/detail/eros/PayPal payment only 

This puzzle is a exchange puzzle by Hendrik Haak for the International Puzzle Party 34 held in London, 2014   Goal: Move all sliders to the outer position.   Packaging: Zip lock bagPreliminary estimate of shipping costs from the Netherlands.   Netherlands: from 0 - 10 kg, approx $ 12.00   Europe 1: from 0 - 2 kg, approx $ 23.00 to Belgium, Denmark (excl. Faroe Islands and Greenland), Germany, France, (incl. Corsica and Monaco), Italy (excl. San Marino ...

Spheres - Stephan BaumeggerCasino - Rombol - Volker LatussekSticks - Unknown Designer - Bill Scheckels 

Castle - Christoph LoheNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.

 49 tiles with 50 spots moving gap 2d puzzle with image of Dutch artist MC Escher's 1938 woodcut "Sky and Water I".   Can be an interesting solve due to a few similar tiles causing a parity issue. Made by Pussycat in Germany (1990).Shipping: $6 USA, $16 elsewhere.

Barasoain - Improved Version - Brand New - Rex made a couple of tweaks on this run of them to help w accidental solve. Im not sure how many of these were made, but Im told some of the last ones. With Acrylic coin, NOT metal coin. "Barasoain" sequential discovery coin release puzzle designed and produced by Rex Rossano PerezThank you for bidding! Please wait until the end of auction for final amounts w shipping. PP F&F preferred but not required.

Burr Puzzle #3 - Hardwood LogicEl Perch - Rick Eason - Nedeljko WoodworksDouble Bar Cube - Tom Jolly - Bill SheckelsChinese Cross - Grave RavenDiabolical Structure - Grave Raven

Talisman - Stephan BaumeggerNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.

Tube It In - Wil Strijbos [Eric Fuller]

Gentleman Crocodile - Yoh KakudaNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.

Wombat - Yoh KakudaNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.

Karakuri Joint - Hiroshi IwaharaNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.

Safe - Akio KameiNot sure if original packaging will come with it. Need to dig through all my boxes.May come with solution, may not. Need to dig through my files.