Very Difficult Puzzle Set - For People That can Solve Everything

For People Who Usually Solve Everything

Some puzzle sets are designed to introduce you to mechanical puzzles.

This is not one of them.

The Extreme Mechanical Puzzle Set brings together three demanding puzzles that challenge completely different ways of thinking. You'll face a three-dimensional packing problem, a complex 51-piece interlocking construction, and a deceptive three-piece metal puzzle.

The set includes:

• Mission Impossible
• Japanese Crystal Puzzle
• Hanayama Trinity

Each puzzle presents a different kind of problem, so being good at one won't necessarily help you with the next.

Three Puzzles. Three Very Different Challenges.

Mission Impossible

Packing Puzzle | 25 Pieces | Expert Difficulty

Mission Impossible is one of the hardest packing puzzles in the Kubiya collection.

The challenge sounds simple: take 25 identical Y-shaped pieces and pack every one of them into a perfect 5x5x5 cube.

Identical pieces might sound easier than working with 25 different shapes. In practice, they create a serious spatial problem. Every placement affects the space available for the remaining pieces, and an arrangement that looks promising early on can leave you completely blocked near the end.

There is more than one possible solution, but finding even one requires patience, experimentation, and strong three-dimensional reasoning.

The challenge: Fit all 25 Y-shaped pieces into the cube.

Japanese Crystal Puzzle

Wooden Interlocking Puzzle | 51 Pieces | Difficulty: 5/5

The Japanese Crystal is a large, complex interlocking puzzle made from 51 non-identical wooden pieces.

When assembled, the pieces form a symmetrical geometric structure with no obvious starting point. The first challenge is discovering the key piece and movement that begins the disassembly sequence.

Once the Crystal has been completely taken apart, the real challenge begins.

Now you have 51 individual pieces and must reconstruct the original structure, understanding where each piece belongs, how the components interact, and which sequence allows the entire puzzle to lock together again.

Taking it apart proves you found a way in.

Putting it back together proves you understood it.

The challenge: Disassemble all 51 pieces and rebuild the Crystal.

Hanayama Trinity

Cast-Metal Mechanical Puzzle | 3 Pieces | Expert Difficulty

Trinity proves that a puzzle doesn't need dozens of pieces to be difficult.

Designed by Hong Kong puzzle designer Kyoo Wong, Trinity consists of only three cast-metal pieces locked together in an unusual arrangement.

None of the pieces is uniform, which makes their relationship difficult to read. The challenge is to discover how the three forms interact, separate them completely, and then reconnect them into the original configuration.

Everything is visible.

The difficult part is understanding what you're looking at.

The challenge: Separate all three metal pieces and put them back together.

Why This Set Is So Difficult

The three puzzles create difficulty in completely different ways.

Mission Impossible tests spatial reasoning and packing strategy.

Japanese Crystal challenges interlocking geometry, sequence, observation, and reconstruction across 51 pieces.

Trinity reduces the problem to only three pieces, but makes the relationship between those pieces extremely difficult to understand.

That's what makes the set interesting for experienced solvers.

You cannot learn one trick and use it three times.

Each puzzle asks you to approach the problem differently.

What's Included

Who Is This Set For?

This collection is best suited for:

• Experienced mechanical puzzle solvers
• People who regularly solve difficult brain teasers
• Packing and spatial puzzle enthusiasts
• Burr and interlocking puzzle fans
• Hanayama collectors
• Engineers and problem solvers
• Anyone who complains that puzzles are usually too easy

This is not the set we would recommend as someone's first introduction to mechanical puzzles.

If you're looking for something approachable, start somewhere else.

If you're looking for a fight, you're in the right place.