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...

Jesse Born - Pi Box (2018) from Jesse's description: This puzzle box is made entirely out of wood, and that includes wooden hinges made out of an exotic dark wood called Mexican Ebony. The Pi Box is an octagon design with nine wedges of "pie" that move in a secret sequence to unlock the box; the puzzle is solved once all nine pieces are centered. It was released in 2018 on National Pi Day, March 14. and some further interesting information in an email from Jesse: ...

Ronald Kint-Bruynseels - Sheffield Steel 6BB (made by Eric Fuller, 2006) movement is good, but edges are very precise, which can cause occasional binding. from Eric's description: Ronald Kint-Bruynseels is a very progressive designer who has a knack for thinking in new directions. The beauty of his designs is that he achieves incredibly high level puzzles with relatively simple shapes. While simple, the [high precision necessary due to the extreme degree of inte...

RCF - rosewood torus (2008) i know very little about this puzzle, and sadly i have even forgotten the name of the maker, and the auction in which i acquired it several years ago has been deleted by the seller.  i'm not even completely certain about the solution, though it is clearly a disassembly puzzle.  all i know is that it's hand-carved from rosewood. it's engraved: #47 RCF 08 (see last photo). if anyone is familiar with this, whether you're bidding or n...

traditional Japanese puzzle box - 6 sun, 12-step, kuroasa from the Japanese shop Izumiya in Hakone, maker and date unknown.  the end panels move sideways and vertically, and the box rotates on a base.  there is an additional secret compartment in the lid, perhaps suitable for papers. please note the slight scratch in the base (last photo). one panel has a locking pin that sets into the base, and the previous owner clearly didn't pull the panel up all the way. �...

Stewart Coffin - Twelve Piece Separation (STC 85, 1999) i bought this from Stewart at IPP20. made from: imbuya (aka pepperwood), satinwoodquantity made: unknown this will be sent disassembled unless buyer requests otherwise.  i will provide an assembly diagram. material note: the pepperwood does actually smell slightly like pepper but richer, which i think is very interesting. scent is a frequently overlooked design detail. ♫:  —1. everything i ha...

traditional Japanese puzzle box - 6 sun, 54-step, saya the photocopied solution sheet is marked 'Yamanaka Kumiki Works'.  date of manufacture unknown. ♫:  —1. everything i have is in the photos. —2. shipment is by USPS Priority Mail, insured for the full sale price and trackable. —3. if the auction(s) in which you are the highest bidder have closed, and you are not bidding on other auctions, please let me know and i will organise the i...

William Keister -The Hexadecimal Puzzle (1986) designed by William Keister in 1972, produced by Binary Arts in 1986.  the box is well-travelled, but the puzzle is pristine. from Jaap Scherphuis' Puzzle Page: The pattern of the four blocking keys may be changed (by temporarily removing the blocking pin that keeps them fixed), and each of the 16 patterns gives rise to a different puzzle. The easiest key pattern is 1111, because this allows you to switch all bars in order f...