Up for auction is A Drive Down Lombard Street by Brian Young. Presented as an exchange puzzle for IPP 29 in San Francisco. See Brian's webpage for more detailed information about this puzzle. It is a sequential movement sliding block puzzle that can only be manipulated by using gravity, a very clever design and fun puzzle to solve. https://www.mrpuzzle.com.au/a-drive-down-lombard-street-dexterity-slide-puzzle/Note: There is a noticeable scratch on the back side of the puzzle, see photo for deta...

X Cage is a brilliant new design that will surely drive you mad. Five simple pieces fit into an attractive cage through the opening in the acrylic. The solver quickly realizes that there simply isn't enough room to accomplish this...to find the solution you'll have to make a discovery!Construction of this puzzle is outstanding, with a very precise fit.Note: There is some light scratching from use on the inside of the cage, as well as scratches on the exterior. See photos for detail. ***********...

Tenchi is a brilliant anti-gravity packing puzzle named after a Japanese word that translates to both "Sky" and "Land," the goal is to pack the pieces into the frame so that the puzzle can be lifted and rotated without any part falling out.There are over four thousand possible assemblies, but only one unique assembly locks the pieces. While challenging, Tenchi is not impossible; analysis and experimentation provide enough insight that you may find the solution using critical thought.We used nine...

One of Stewart's earlier works, Pyracube is a puzzle I've always wanted in my collection. I figured since I was going to make one, my customers might want one too. So here it is! Stewart has this to say about Pyracube:Pyracube introduces a large family of puzzles made by joining polyhedral blocks together different ways, in this case by using edge beveled cubes (or to put it another way, truncated rhombic dodecahedrons). Strange as it may seem, they pack snugly and neatly into the cubic box with...

Amulet is a tricky and interesting variation on the standard six piece burr. To quote Allard's blog post about it: "He's fiddled around with a standard six-piece burr and added a few constraining voxels around the middle and shorted one of the axes... adding those voxels makes all the difference it turns out – without them there'd be 144 solutions, with them the solution is unique... and quite tricky!"Construction of this puzzle is excellent, with a nice fit that will tolerate a fair amount of...

I'm trying to include at least one interesting packing puzzle in each update, and the A-Pack absolutely overdelivers in that regard. The concept is unique and brilliant, and I'm very glad I made it. There are two sliding shuttles which are captured in the acrylic frame. The goal is to pack the pieces completely in, and it's very very difficult. Right off the bat you're faced with a level 12 shuffle to get two of the major pieces situated. The remainder comes along together nicely, not too simple...

Goh Pit Khiam sent me this design and I really liked it. It's a tricky packing puzzle that uses a new type of motion. With five identical pieces (but different wood types) and an acrylic cover, it's a lot of fun to play with and figure out. Moderately difficult, you can feel comfortable handing this off to a non-puzzling friend. Fit is very good, should not have any issues with humidity changes.Note:  This copy has an acrylic floating bottom panel for display in the solved state, which is diff...

Up for Auction is T13, Trick Lock 13 by Rainer Popp. Puzzle was solved and stored, patina did develop. Polished and waxed using British Museum approved products. Some light scratches and faint patina are present upon close inspection. There are two dings noticeable from far away. One on the front face and one on the beveled edge on the front right side, see photos for detail. Other than that the puzzle is in excellent condition. Additional photos are available by email upon request. Note: Orig...

Up for Auction is Eternity by Christopher Monckton. These webpages contain an explanation of the puzzle as well as a brief history of the solvers. Thank you to Ed Pegg Jr. from mathpuzzle.com for the information about this design. Most of the original information is no longer accessible. https://mathpuzzle.com/eternity.htmlhttps://en.wikipedia.org/wiki/Eternity_puzzleMost notable is the one million pounds sterling cash prize given to the first successful solver. Each piece of this puzzle is mad...

Dovetail Burr is our follow-up to the Japanese Wood Joint puzzle we released last month. Both are part of the series that Frans designed nearly 20 years ago. Inspired by traditional Japanese woodworking joinery techniques, Dovetail Burr was Frans's IPP 20 Exchange puzzle.Dovetail Burr remains an utterly unique interlocking board burr concept despite its age. The presence of matched dovetail joints forces each pair of pieces on a given axis to interact with the other. This innovation creates a di...

Akaki's Picnic is a wonderfully creative Packing Puzzle. The goal is to pack each 3x3 cube into the Picnic Basket so that all pieces are flush. Assembling the cubes outside the basket is trivial; the challenge comes when you try to fill the container. The handle of the basket blocks your progress, causing you to analyze the situation and think outside the box.Akaki named the cubes after different foods you might find at a picnic. Each has a unique solution, representing a range of difficulties. ...