As soon as I saw the Gaia design I knew I wanted to make it. The structure is very unique, incorporating stick pieces and board pieces with a constraining cage. The unique level 11.2 solution is not as difficult as you would think, making this a fairly approachable puzzle. When solved the acrylic nicely sets off the three wood combination.Fit is very precise, and the cage features rabbited joinery for strength. Stick pieces are milled from solid wood.Note: Original packaging and documentation no...

This item is no longer available anywhere, thanks to the closure of NKDpuzzleThis puzzle is quite a challenge to figure out, quite a journey of moves! It requires a _minimum_ of 151 steps to open, but only if you know EXACTLY what you're doing, and you will certainly not know exactly what's going on, the first time around (and around and around). Even knowing how it works, I get lost in its amazing complexity, as I fiddle with it again, from time to time!-The fully-made copies sold by NKD were o...

The "The Great Centaurian Puzzle" is puzzle trade card which dates from 1881  — as discerned from the calendar on the back of the card (see second photo) — thus making it 145 years old!  The card is in BEAUTIFUL condition; I would rate it as "museum quality."  The object is to cut the card (DON'T DO IT!) along the given lines into twelve pieces, and then form a square from the twelve.Â...

The "Remove the Key" puzzle dates from 1902  — as discerned from its given U.S. Patent number 695059 (See first photo) — thus making it 125 years old!  The card is in EXCELLENT condition; I would rate it as "museum quality."  The object is to remove the key from the card without damaging any of the three puzzle pieces.  The key could then be turned in as a down payment for a variety o...

Spy is an Interlocking Puzzle with a secret. Four Purpleheart and Yellowheart pieces packed into a Figured Maple container...simple, right? Perhaps a closer look is in order. With a level 24.2.2.2.4 solution, Spy is definitely hiding something! Even disassembly is a difficult task.With sturdy shouldered box construction and burr pieces milled from solid exotic wood, Spy looks great when disassembled and even better when solved. Tolerances allow for smooth movement while ensuring a stable final a...

Shipping only to CONUS. A simple-looking, yet highly challenging take-apart puzzle.​ Polished both inside and out right before the picture was taken.~Kept in a smoke free, pet-free home.Buyer is to pay for shipping. Do NOT pay until after shipping costs have been discussed and added to total.I can accept payments via PayPal.

Eric Fuller - Triple Locked Box (2007) from Eric's description: Although it looks relatively modest on the outside, this is a phenomenally difficult puzzle box to open. It is by far the most difficult box I have produced for the public. Beginning with simple sliding panel moves, the solvers task is to find the key and use it to disengage the concealed locks which prevent it from opening further. Although the metal parts of the mechanism are never revealed, this box wo...

I noticed a lot of interesting board and stick burrs coming out on Ishino's site so I decided to make batch of them. After looking at a couple dozen designs I chose six for their representation of the various concepts and levels of difficulty.This and the Quads and Rings 1 are probably the entry-level puzzles in this category when it comes to difficulty. Worm Inside is fairly basic, with the added twist of two smaller acrylic "worms" that are to be inserted alongside the wood wenge sticks. A tri...

Ages ago I made a small batch of RD puzzles using octahedral clusters (truncated rhombic dodecahedra or chamfered cubes). I never did make the best of Coffin's design though, the Five Piece version, so I thought I'd whip up a batch after having so much fun with the Pyracubes. Five Piece Cluster has four dissimilar non-symmetrical pieces and a fifth key piece that is a single block. The serially interlocking solution is very tricky!The construction of this puzzle was done with edge beveled cubes ...

Up for auction is Box of the Celts by NumbSkull puzzles. A multi-step sequential discovery puzzle that encompasses several different puzzle genres in one format. This design is not for the feint of heart! A very impressive and challenging design. 3D printed by the designer, everything functions reliably and smoothly from start to finish. From the designer: "This puzzle is quite tricky and a lengthy solve aimed at experienced solvers. Take your time and have fun!"Note: Original packaging is incl...