"Nutcase
There are two goals to the Cast Nutcase created by the Dutch puzzle inventor, Oskar:1. Remove the small nut by disassembling the Cast Nutcase. 2. Cast puzzle enthusiasts (nutcase) can enjoy trying to change the wording on the bolt from ‘nut-case’ to case-nut’.The key word is “interlocking”. "

"O'Gear
A prize winner from the 2001 1st Annual World Puzzle Design Competition, this puzzle was designed by the young Dutch phenomenon, Oskar, considered to be one of the world’s brightest creators.The gear exhibits a unique kind of movement.Once together in its final form of beauty, the gear fixed in place in the cubic box could very well serve as a desk decoration to satisfy a kind of smoothing, intellectual curiosity.The key word is “teeth”"

"Padlock
The design is evocative of a study padlock. Just pick it up and you’ll quickly gain an appreciation for the challenge that lies ahead – this puzzle will not open easily!The interior is comprised of two elliptical pieces, locked together tightly around the circular pieces and obstinately refusing to be released. But don’t give up!Repeatedly separate and then put them back together and prove you have what it takes to unlock this riddle.Designed by Korean designer JinHoo Ahn.The theme is “obstinacy.”"

"Quartet
True bonds has always been hard to form, but once formed such bonds are eternal and hard to break.My original version was created with this image in mind, but the puzzle was completed into a Cast Puzzle with a bond that is truly difficult to unravel.How would you go about breaking and forming this bond? There are two approaches to this puzzle and I challenge you to both!The key word is “Bond”."

"Radix
The Radix is a puzzle known for both its monumental looks and somewhat organic styling and movement.The entire unit gives off an air of antique wisdom, the pieces joined at the base in chaotic harmony.The name comes from the mathematical term, “radical axis”, and also means root in Latin. The innovative concept that it is, you might even be tempted to call it “radical”. Whatever you call it, have fun.The key word here is “sprout”."

"Rattle
Four pieces of the same shape are loosely interlocked together to make up this puzzle.All of the pieces fit loosely and it seems as though they would be easy to take apart. However, one is soon at a loss, as the puzzle gives no hint about how it is solved.The trick is to not think too hard, but to ease your mind as you take up the challenge.The American Bram Cohen designed this puzzle.The theme is loose."

"Ring
Hanayama has been manufacturing games and toys for over 80 years. They're internationally known for their mind-bending series of three-dimensional puzzles. Hanayama puzzles are great assembly/disassembly brain teasers that come in a range of difficulty from 1 to 6.This puzzle is based on an original called the “Puzz-Ring”.Popularized in 15th century Europe, this ring style was actually used for official engagement and marriage rings.Christian reformist, Martin Luther, was even known to wear one.It is also rumored to prove as evidence of its wearer’s adultery… when it comes apart into pieces.That’s quite a history contained in this little puzzle."
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"This puzzle is based on an original called the 'Puzz-Ring.' Popularized in 15th century Europe, this ring style was actually used for official engagement and marriage rings. Christian reformist, Martin Luther, was even known to wear one.
It is also rumored to prove as evidence of its wearer’s adultery… when it comes apart into pieces. That’s quite a history contained in this little puzzle."

-Nob Yoshigahara, 2000 ROTORThe stylish design of the interlocking pieces of the same shape, are reminiscent of an emblem. The uniquely shaped pieces, along with numerous solutions, make this a difficult puzzle.Designed by Hong Kong designer Kyoo Wong.SNOW-A maze system created with the theme of beautiful snowflakes.Following the designed route, the movement to solve the piece is like snow falling from the sky.

"Trinity
A puzzle that interlocks each piece with the two other pieces via an elusive, organic design.There are numerous possible combinations other than the ones shown here, giving you plenty of room to enjoy some puzzling experimentation.Designed by Hong Kong designer Kyoo Wong. "

Twist
-Using the grooves, slide the protrusions and attempt to complete this very complicated puzzle. The asymmetrical design will mesmerize you and bewilder your memory. The movement is definitely a twist.The theme for this puzzle is tangle. Designed by Oskar Deventer from the Netherlands.

U&U
-The Cast U&U was designed by Kyoo Wong from Hong Kong, who also designed the very ingenious Cast Delta and, like his first puzzle, the U&U is a very new mechanism/idea. It was released in April 2014 and seemed to take quite a long time to reach the West

ufo-2019 release.

" Violon
Patented in America in 1965, this puzzle was originally created by Joseph L. Litle.The idea to make this puzzle came to me after playing with a wooden copy built for me by my close, but now deceased friend, Tadao Muroi.The proportions have been changed considerably from the original plan in this new version.With this puzzle being styled after a violon and its strings, the key word here is… “strings”."

"Vortex
The three pieces each have a spiral (vortex) body and two protrusions. When assembled together, each piece is unified into a flat object.In order to undo this complex entanglement it will be necessary to unbind them three dimensionally.The motivation behind this idea is the statue of Asura. Asura is an ancient Indian god ans also a protector of Buddhism.The figure with the three faces and six arms conjured up the concept of Trinity.The theme is ‘Crest’."