Advertising premium for Connecticut Mutual Life Insurance Company, Hartford, CT, with 9 colorful cards, paper envelope and instruction sheet.(Note - You can pay in dollars or euro, by PayPal or bank transfer, or by $ check in the U.S.)

Magic 16 - a plastic sphere with imbedded magnets and 16 outer shell pieces (with magnets), from CHH Games. And, you will be ecstatic to learn that this has The National Parenting Center SEAL OF APPROVAL! Wow! Anyway, an interesting puzzle, amusing but not particularly difficult. It weighs 10 ounces. In original packaging, with solution sheet.

Ico Puzzle - make the shape (icosohedron) on the cover of the box using the numerous pieces inside. Comes with a cloth bag for all the pieces - 20 clear "surfaces" and 30 black "edges". Designed by Peter Kaldeway as an exchange puzzle for IPP29.

Eight lettered blocks. You are to arrange them in lines of 3, 4, 5, or 6 blocks with words shown on each of the 4 sides of the row. Designed by Louis Toorenburg of Labyrinth Woodworks for the IPP29 exchange.Weight, 4 ounces.

David Litwin's Exchange puzzle from IPP31. A nice packing puzzle, very nicely made with a metal box.

this puzzle, designed by Lee Krasnow, was Rob Jones' exchange puzzle in 2009 at IPP29.when disassembled, the tip of the pencil can be used as a top.I'm selling these puzzles to fund future puzzle-making equipment, and of course to buy morepuzzles :)buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

Eight-Pack; try to pack 8 pieces into the frame - 4 like the one shown, 4 mirror-image. Not as easy as it appears!

Monthly Puzzle, Wei-Hwa Huang, exchange puzzle from Tanya Thompson for IPP29, laser cut by www.lasesexact.nl. Object is to form the tiles so as to spell out each of the months using the yellow bars mixed with the cutouts on the tiles. What is shown is NOT a solution.

FKUUVY, from Joe Becker. Hey, I didn't name it. Assemble the 6 ball pentomino pieces into a 4-level square-based pyramid.

Oskar van Deventer is well known for designing some of the most interesting and creative puzzles available. His paperclips are no exception. With two possible solutions, the paperclips interlock to form a beautiful sculpture once solved. At 14 moves, finding the the solution to this work of art is no trivial task either. It is a very confusing and difficult puzzle to solve.Although beautiful, many of Oskar's designs are very difficult to realize in wood. That is why they are extremely scarce.Eac...

two pairs of puzzles assemble to make a nice dual-tetrahedral shape.I'm selling these puzzles to fund future puzzle-making equipment, and of course to buy morepuzzles :)buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

goal is to arrange the colored pegs in the grid such that each row and column only have oneof each colorI'm selling these puzzles to fund future puzzle-making equipment, and of course to buy morepuzzles :)buyer is responsible for money transfer fees (ie 3.5% for paypal), packing and shipping expenses...

My IPP32 exchange puzzle. Pack the 13 L-shaped pieces into the frames on either side. The pieces can also be packed into a 4x4x4 cube and other 3D shapes. Puzzle includes an 8 page booklet of challenges. Comes in a clear plastic box, you can store the puzzle in the solved or unsolved state.

Nippon, the IPP 2001 puzzle from Wolfgang Schneider. You take a number of 4-cubie pieces and put them together so that you have a 6 sided figure showing the same number of squares in each view, and that each view is arranged identically. Sounds tough, especially when you add the "red dot" that will appear in each of the 6 views. I never did solve this one.

Not-A-Cube, made by Wayne Daniels, IPP29 Exchange from Abel Garcia. Bloodwood pieces held together with steel pins. I wasn't sure whether to call this an interlocking puzzle or a put-together; the pins are the only thing holding it together. "Six equal quadrilateral faces, but not a cube." Math by David Allwright.

Kreuzweise, A puzzle game where you put the pieces together (edge-matching) to make a variety of shapes at different levels of difficulty. The pieces are thin cardboard, and there are quite a few (50) in the box, along with rules. Design by Thomas Funke, author Uwe Himmelreich, made by "Good Ideas".

A very clever packing puzzle by Rob Hegge, IPP31 exchange. The packing frame is damaged, it was cut incredibly thin at the bottom (see second photo). This has no effect on the puzzle.

IPP22 exchange from Dick Hess. Just pack the 6 half-circles into the square! There is a slightly larger frame on the back of this puzzle which is much easier to solve. Comes with a solution page. The fit on the front frame is very tight. It is a lot more fun to work on packing the frame on the back.

IPP30 exchange puzzle by Hiroshi Yamamoto. Pack the 9 "acrobats" in the frame. Nicely packaged in a CD case. Not overly difficult, but fun.

IPP31 exchange puzzle by Pavel Curtis. A hard puzzle to classify as it is both put together and sequential discovery. The goal is to discover the "secret answer".I requested tips from Pavel to solve this, but I eventually got it. I wanted to make it available to others to have the fun of solving it!