Gary Foshees famous Transparent Lock, accurately and expertly produced by Two Brass Monkeys.Truly a one of a kind lock experience.Puzzle has been solved twice and is in perfect condition.Only shipping in the US, so no tarrifs will apply.Please don’t pay until shipping options are discussed.Payment is accepted via PayPal Friends & Family.

Butterfly Lock by Wil Strijbos, also known as “Pleasure & Pain”For sale is my Butterfly Lock by Wil Strijbos, also known as “Pleasure & Pain”.A beautiful and highly distinctive mechanical puzzle, the Butterfly Lock is well known among collectors for its unusual design, clever mechanism and challenging solve. It is a substantial piece made from aluminum and steel, weighing approximately 1.5 kg.CONDITIONThe puzzle is in VERY GOOD CONDITION and has been SOLVED ONLY ONCE by me.As is normal f...

Popplock T14 by Rainer Popp – EXCELLENT CONDITIONFor sale is my Popplock T14 by Rainer Popp, an exceptional and highly collectible mechanical puzzle lock.The T14 is a beautifully engineered sequential puzzle that requires a series of precise moves to unlock. Made from brass and stainless steel, it has a substantial weight of approximately 1.7 kg and feels extremely solid and premium in the hand.CONDITIONThe puzzle is in VERY GOOD CONDITION and has been SOLVED ONLY ONCE by me.As is normal for a...

Up for auction is a packing puzzle called BOTTOM OUT designed and exchanged by Henry Strout at IPP Assisi 2026. The goal is to put all pieces into the given tray. One piece will stick out in the solved state though Another part of the HUGE train Henry started many years ago!  The item is in great condition. After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the preferred way of shipping is clear, I will provide fi...

Up for auction is an assortment of Hanayma puzzles which want to get defeated by another puzzlers. The winner will get the following brain teasers:- Cast A&A designed by Vesa Timonen- Cast P&P designed by Yasunari Makino (IPP Design Competition 2024 under the name of UNIT PUZZLE)- Cast Hex designed byMasumi Ohno- Cast Wallet designed by Koichi Miura (a bit different at IPP Design Competition 2023 under the name of COIN WALLET)- Cast Ripple designed by Kyoo Wong (IPP Design Competition 2023)- Cas...

Up for auction is a packing puzzle called CAGED MARBLES designed  by Sjaak Griffieon which was entered at the IPP Design Competition 2025 in Tokyo. It is multi-level logic game with many challenge cards. The goal is always to start with a given configuration and you need to complete the cube and close the 2-parted cage! It sounds easier than it really is! The item is in great condition. After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post...

Up for auction is a packing puzzle called TETROMINO+1 designed by Yasunari Makino and which won the TOP TEN VOTE GETTER AWARD at IPP Tokyo 2025. The goal is to put all pieces into the given tray with the retricted opening and a "fixed-to-the tray" but moveable cuby piece.- A superb brain teaser!  The item is in great condition. After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the preferred way of shipping is cle...

Up for auction is a packing puzzle called 8 BITS desigend by Jean Claude Constantin and exchanged by Allan Stein at IPP Tokyo 2025. The goal is to put all 8 pieces in 2 layers into the given tray so that the colorful pulleys will fit the holes of the pieces throughout the 2 layers - a challenging but superb brain teaser The item is in great condition. After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the preferred...

Up for auction is the TETRA 1 puzzle designed and made by Osanori Yamamoto. It was entered at IPP Design Competition 2024 in Houston / USA and is a 3D packing challenge where 4 pieces have to be put into a given box with various entries. You should also achieve an apparent cube at the same time. Another difficult one for me! The puzzle is in great condition!  After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the p...

Up for auction is the CHOO CHOO LOOPS puzzle designed by Kate Jones and produced by Kadon Enterprises. We are talking about many 2D put together challenges to solve from an accompanying booklet. It guarantees hours of fun (and frustration) for sure! It was also an IPP Design Competition Entry in 2009. The puzzle is in great condition!  After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the preferred way of shipping...

Up for auction is a 2D packer called 7 RAPTORS 4 desigend by Yuji Katayose and exchanged by Atsushi Katagiri at IPP Tokyo 2025. The goal is to put all 7 pieces in the given tray - not an easy task at all! The item is in great condition. After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the preferred way of shipping is clear, I will provide final payment amount.I am shipping worldwide. To provide an idea, shipping ...

Up for auction is a packing puzzle called BLACK OR WHITE designed and exchanged by Naoyuki Iwase (Osho) at IPP Tokyo 2025. The goal is to put all pieces into the given tray so that a checkerboard pattern is created. There are two challenges and both are tougies. The item is in great condition. After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / DHL or Hermes. After the preferred way of shipping is clear, I will provide final payment amo...

Up for auction is a 3d printed puzzle design from Diniar Namdarian called HYPNO BALLS. It was entered at the IPP Design Competition 2022. The goal is to take the brain teaser completely apart (free the steel balls if you like). Once you achieved this, try to find a way to do it in 30 seconds each time.  The item is in great condition. As I have more of those the color can be different!After the auction ends I will pro-actively contact the buyer and provide shipping options via Deutsche Post / ...