Box of the Celts is a very strong contender for being the hardest sequential discovery puzzle out there! But it's very fair with it's difficulty, so I can't truly say it's the most difficult puzzle in the world. I'm looking at you SMS Box and I still say you are very unfair with your solve! It involves aspects from puzzle boxes, puzzle locks, disentanglements, coordinated motion, mazes and hidden mechanisms to torment you!BotC by Numbskull Puzzles or Matt M, is diabolical. It's surprisingly stra...

Selling my copy of the Kawashima Christmas gift of FS Cube. This is a very cool solve, not to difficult but very clever. Puzzle is in excellent condition and functions as intended. Here is the description from the Karakuri Website :FS CUBEcraftsmanHideaki KawashimaITEMKW-50Created11/2023Size(box body)65×65×65mmSize(storage part)27mm cube cut diagonally×2MaterialJapanese walnut, magnolia, cherryFacebookTwitter共有This work was designed as a Christmas present for 2023.There are two small stor...

Selling a pristine copy of Akio Kamei Button Box. This is a very under rated puzzle and has a pretty cool solve. This puzzle comes with original box and solution. Puzzle functions like new. Please wait to make final payment until shipping has been added to your invoice. Insurance by request and at buyers expense. Please make payment using PayPal friends and family. Please respond to message within 24 hours of auction ending. This does not mean payment is due, just would like to make contact. Pl...

Hey, I want to sell the CT 666 Super Cross which was designed and build by Arjeu.The original box and the original solution is included.The 1€ coin is not included ;)I will ship also to the USA!Also have a look at all my other listings!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs but of course no PayPal fees. :)Please contact me if you have any questions about ship...

Hey, I want to sell the CT 46 - 99 piece Pagoda which was designed and build by Arjeu.The original box and the original solution is included.The size is about 17cm.The 1€ coin is not included ;)I will ship also to the USA!Also have a look at all my other listings!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs but of course no PayPal fees. :)Please contact me if you h...

Hey, I want to sell the CT 153 Pavillon which was designed and build by Arjeu.The original box and a handwritten solution is included.The 1€ coin is not included ;)I will ship also to the USA!Also have a look at all my other listings!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs but of course no PayPal fees. :)Please contact me if you have any questions about shippi...

Hey, I want to sell the CT 761 which was designed and build by Arjeu.The original box and a handwritten solution is included.The size is about 16cm.The 1€ coin is not included ;)I will ship also to the USA!Also have a look at all my other listings!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs but of course no PayPal fees. :)Please contact me if you have any question...

Hey, I want to sell the CT 441 which was designed and build by Arjeu.The original box and a handwritten solution is included.The size is about 16cm.The 1€ coin is not included ;)I will ship also to the USA!Also have a look at all my other listings!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs but of course no PayPal fees. :)Please contact me if you have any questions...

Hey, I want to sell the CT 433 Hedgehog which was designed and build by Arjeu.The original box and a handwritten solution is included.The size is about 24cm!The 1€ coin is not included ;)I will ship also to the USA!Also have a look at all my other listings!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs but of course no PayPal fees. :)Please contact me if you have any...

Description:Designed and made by Christian Cormier.Goal is to extract the keys.Heavy and very challenging puzzle. Limited edition.The original tool will be provided to help you reset the puzzle faster (but it's not needed to reset the puzzle!). Payment : PayPal (F&F preferred or fees to be paid by buyer). Wait until the auction is finished so that I let you know the paypal address to pay to.Please don’t pay directly after you win the auction. Let’s first discuss your preferred delivery requ...

Description:ORB puzzle by SonicGames in its extreme version.A very challenging with a clever mechanism! Feels well in your hands and displays well. Come with its original leather box.Payment : PayPal (F&F preferred or fees to be paid by buyer). Wait until the auction is finished so that I let you know the paypal address to pay to.Please don’t pay directly after you win the auction. Let’s first discuss your preferred delivery requirements and adjust the total amount accordingly.Feel free to a...

Description:27 Identical blocks with dimensions AxBxC fit into a box with sides A+B+C. Invented 1978 by Dean Hoffman and beautifully crafted in the 90s by Trevor Wood.There are a lot of wood species and a list of them will be provided along with the puzzle.Payment : PayPal (F&F preferred or fees to be paid by buyer). Wait until the auction is finished so that I let you know the paypal address to pay to.Please don’t pay directly after you win the auction. Let’s first discuss your preferred de...

Description:Begonia definitely has a twist to it - the "box" has three axes! The most interesting part of the solution is figuring out how to deal with the corners where the plane switches. Tricky but not insanely difficult, and a lot of fun to solve.The construction of this puzzle is robust. Internal pieces are beveled on all faces, as is the outside of the box. The box itself has angled splines made from the same rosewood as the pieces to keep the joints from moving or splitting down the road....