Boston has a subway system in which there are two North-South lines crossing over two East-west lines with connections between them at some of the cross-over points. Imagine a future Boston subway system with ten North-South lines and ten East-West lines. Oskar van Deventer imagined such a system and built the most perverse transfer design possible. This rendition of his puzzle was greatly enhanced by the fertive mind of Dave Rossetti who suggested a magnetic wand to guide the intrepid wanderer ...

Professor Brain's Corn Puzzle. Original box, not open.. You are given 14 pieces of corn cut into semi-circular pieces along with a jar. You have to arrange these pieces so that they perfectly fit into the jar. I.Q. Rating 5 Minutes ..................................Brilliant 15 Minutes..................................Dimensional Thinker 30 Minutes..................................Above Average Can't Do?...................Check Enclosed Solultion. "Buyer to pay shipping; postage cost ...

Each year in February and March I have more time so I can make some new or special puzzles. It is good and quiet occasion to make some ideas which I could not realize during a year. It is time when I can enjoy selection of the best coloured wood from my stock and I can make the puzzles as I want. I am usually doing these puzzles for myself or for my friends only. Each of puzzles on this auction is from this creation. These puzzles are not for commercial sale. All of them are waxed by special ...

A wonderful handmade wood Jigsaw measuring 6-1/2 x 6-1/2 inches. It was purchased about 1994, and is in new, onopened condition. (there is tape, and a small tear in plastic, although it is probably food wrap). It shows two mountains , the sun, and I believe is made of Maple, Ebony, Cherry, Mahogany. I am not a wood expert, so I may be incorrect. Perhaps those in the community, will correct me if I am wrong. It is in the style and design of Steve Malavolta, although ii is NOT signed and I cannot ...

A Unique Nurica Original Sample Puzzle of "Anna". "Our fantastic 3-D puzzles consist of many cubes with parts of six different pictures on their sides. Solve our puzzles by connecting the cubes to complete the picture on each side and you will have an amazing 3-D structure." Reassemble the pieces into 6 pictures. The pictures, when completed, from a 3-d Art object and puzzle! You could even print your own pictures, cut them out and customize. Wild looking puzzle rarely seen or found....

Very nice condition Kohners Nervous Breakdown 1968 with original attached cardboard blister instructions. If you have never had one, it is a must! A 45 degree mounted mirror requires you do the opposite to what you might expect! Get the balls to the right spot! Much harder than it seems. "Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location" Shipping is $5.50 priority Mail. US

Notes: This classic from William Altekruse created more than a hundred years ago is still a fascinating puzzle. 12 identical pieces. Quite a nice challenge to put together. Very fun to play with. A must have in any collection.

3-piece pyramid puzzle each block measuring 1" square. This puzzle is discussed in Stewart Coffin's book The Puzzling World of Polyhedral Dissections, to which reference is made on John Rausch's website: http://www.johnrausch.com/PuzzlingWorld/chap04c.htm Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location.

Cage puzzle with wood ball at its center. This puzzle is discussed in Stewart Coffin's book The Puzzling World of Polyhedral Dissections, to which reference is made on John Rausch's website here: http://www.johnrausch.com/PuzzlingWorld/chap06c.htm Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location.

The third box of Hiroshi Iwahara's Byway Secret series, possibly his best and last. Iwahara also calls it the "Wrong side secret" box. The outside is undecorated--on purpose--and is a clue to opening the box. There box has 2 compartments. Opening the first is straightforward, but 21 moves are required to open the second compartment. The box is a very clever twist on the traditional Japanese puzzle box.The box is beautiful and extrarordinarily well crafted. It has been been out of production for ...

Gear up! What A wild puzzle this one is. Here is the info, right from source: Gear Up Oskar van Deventer The goal of Gear Up is to rotate the discs until the notches in the four tabs are exactly aligned. The puzzle is a stack of four plastic discs attached via a central axle, each has a tab and a notch and can rotate in the axle. The plastic is transparent so that various internal planetary gears can be viewed as the discs are turned. The puzzle operates on the same principle as the differ...

Great Example of the craftsmanship of Jean-Claude Constantin. This puzzle features two layers of exotic woods with Aluminum posts. What makes this tricky is the posts are not fixed and can be moved! Very nice condition with original packaging, instructions, and solution. Manufactured by or for Channel Craft. "Master Craftsman & Puzzle Designer brilliantly blends mediums of unique metals with the worlds most treasured hardwoods. This Elegant combination of Design & Dimension is sure ...

from cubicdissection.com:"This beautiful puzzle was originally designed by William Strijbos to be implemented with cut off sections of metal tubing. John has recreated it in beautiful solid bubinga. Incredibly, each and every piece of the puzzle (some quite small) is constructed of miter cuts reinforced with solid rosewood slipfeathers. This a beautiful puzzle that is also a lot of fun to solve!" Buyer is responsible for paying 3% PayPal fee if paying via PayPal

This puzzle was used as an Exchange Puzzle at the International Puzzle Party in Los Angeles in 2000. It has a single solution and is very difficult. It consists of 12 pieces, each formed by joining pairs of planar pentacubes to form non-planar decacubes. Buyer is responsible for paying 3% PayPal fee if paying via PayPal

OK, while technically not a "puzzle", it does market itself as a puzzle. Considered the Holy Grail of toys by some across the pond. I thought Eric might let this one slide...just for fun. I wouldn't want to guess what would happen if Robert put Bees inside. Here's the scoop. I am unsure of the date, but this toy was banned! Cruelty to flies! You really only get a little pink plastic Pig. I truly mean that. In a bar, your friends are to be mystified as to how this pig is suppose to move and jump...

What else can I say? A take apart/assemble vintage white Pig! Corporate marked. "R.B. Rice Sausage Company US Lees Summit, Mo" Complete in original condition as found. (A little bath might help.) Another Hard to find! "Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location" USPS $5.50, FedEx $10.00 Insured US.

Bill Cutler first used a computer program to analyze six piece burrs in 1974 but it took until 1990 to analyse all possible six piece burr combinations. Mega Six is the result of that search for the maximum number of moves for a six piece burr with a unique solution. This does not mean it has a unique assembly, due to the number of internal voids. In theory the pieces should fit together in 20 different ways however, the reality is that you can physically only put the puzzle together in one of...

7-piece frame packing puzzle.<br> <br> Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location.<br> <br>

25-piece "N" pentomino packing puzzle. Only four known solutions.<br> <br> Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location.<br> <br>

The object is to remove the four beams from the block.<br> <br> Buyer to pay shipping; postage cost to be determined at end of auction depending on purchaser location.<br> <br>