Wil Strijbos x Felix Ure Signature Series

Discover a rare collection of collectible mechanical puzzles created by two of the most respected designers in the world of mechanical puzzle craftsmanship.

The Wil Strijbos x Felix Ure Signature Series brings together four remarkable metal puzzles that showcase different approaches to engineering, movement, precision, and mechanical creativity. Carefully curated for collectors and advanced puzzle enthusiasts, this set highlights the work of two legendary makers whose designs continue to influence modern mechanical puzzle culture.

While each puzzle delivers a completely unique solving experience, together they form a cohesive collection centered around elegant mechanisms, refined metal craftsmanship, and deeply satisfying interaction.

This is not simply a set of difficult puzzles. It is a curated collection of mechanical design philosophy from two masters of the craft.

The First Cylinder Puzzle

Designed by Wil Strijbos - The Netherlands

Difficulty Level:

3.5/5 - Advanced

The First Cylinder Puzzle is one of Wil Strijbos’ iconic mechanical creations, combining minimalist industrial aesthetics with a surprisingly complex internal interaction.

At first glance the puzzle appears almost deceptively simple, but beneath its smooth cylindrical form lies a carefully engineered mechanism that rewards patience, experimentation, and precise movement.

Like many Strijbos puzzles, the challenge comes not from force, but from understanding the hidden logic concealed within the object itself.

About Wil Strijbos

Wil Strijbos is widely regarded as one of the most influential mechanical puzzle designers in the world. Known for his inventive locks, sequential discovery puzzles, and precision-engineered mechanisms, his work has become highly collectible among serious puzzle enthusiasts.

Why It’s Part of This Collection

The First Cylinder Puzzle perfectly represents Strijbos’ signature design language: elegant, mysterious, mechanically intelligent, and deeply satisfying once understood.

Yin Yang (69 Puzzle)

Designed by Wil Strijbos - The Netherlands

Difficulty Level:

4/5 - Expert

The Yin Yang Puzzle, also known as the 69 Puzzle, is one of Wil Strijbos’ most recognizable mechanical puzzle designs.

Its sculptural interlocking form creates a challenge centered around movement, orientation, and spatial understanding. What initially feels impossible slowly reveals a precise mechanical logic through careful manipulation and experimentation.

The puzzle is celebrated not only for its difficulty, but also for its visual balance and elegant symmetry inspired by the classic Yin Yang symbol.

Why It’s Part of This Collection

The Yin Yang Puzzle demonstrates Wil Strijbos’ ability to transform abstract concepts into highly original mechanical challenges that feel both artistic and intellectually rewarding.

Hip-Flask Puzzle

Designed by Felix Ure - London, England

Difficulty Level:

3.5/5 - Advanced

The Hip-Flask Puzzle by Felix Ure combines precision engineering with playful industrial design.

Inspired by the shape of a classic pocket flask, the puzzle conceals a sophisticated mechanical interaction beneath its smooth metal surface. Every movement feels deliberate and refined, rewarding careful reasoning and patient exploration.

Felix Ure’s puzzles are known for their exceptionally clean machining, satisfying tactile feel, and elegant mechanical solutions hidden inside deceptively minimal forms.

About Felix Ure

Felix Ure is a highly respected British mechanical puzzle designer known for creating premium metal puzzles focused on precision engineering and mechanical interaction. His work is admired by collectors for its craftsmanship, originality, and beautifully executed mechanisms.

Why It’s Part of This Collection

The Hip-Flask Puzzle adds a refined industrial design perspective to the collection and highlights Felix Ure’s mastery of mechanical simplicity and precision movement.

Kepler Puzzle

Designed by Felix Ure - London, England

Difficulty Level:

4/5 - Expert

The Kepler Puzzle is a sophisticated mechanical challenge inspired by mathematical precision, geometry, and elegant engineering principles.

Its beautifully machined metal construction conceals a deeply satisfying mechanism that unfolds gradually through experimentation and observation. The puzzle rewards logical thinking, spatial reasoning, and attention to subtle mechanical feedback.

Like many of Felix Ure’s creations, the Kepler Puzzle balances industrial beauty with mechanical depth, creating an experience that feels both intellectual and tactile.

Why It’s Part of This Collection

The Kepler Puzzle represents the highest level of Felix Ure’s precision-driven design philosophy and adds exceptional mechanical depth to the Signature Series.

A Collection for Serious Puzzlers

The Wil Strijbos x Felix Ure Signature Series was curated to showcase:

• Precision-engineered metal puzzles
• Rare collectible mechanisms
• Sculptural industrial design
• Advanced mechanical interactions
• Two legendary puzzle design philosophies

Together, these four puzzles create a collector-worthy experience designed to challenge, inspire, and reward puzzle enthusiasts who appreciate true craftsmanship and mechanical ingenuity.