Extreme difficult puzzles are often crafted from wood or metal and require intricate manipulation skills and a deep understanding of the underlying mechanisms to solve. Some examples include complex mechanical puzzles, secret opening puzzles, take apart puzzles, brain teaser puzzles, and intricate burr puzzles with numerous interlocking pieces. These puzzles can be challenging but also very rewarding when solved.
Mission Impossible - IQ Puzzle For Adults
Packing puzzles can challenge even the most experienced puzzlers! Our Mission Impossible Puzzle certainly lives up to its name as one of the hardest packing puzzles we have in our...
Quartet Cast Puzzle - Very Hard Puzzle
Not for the faint of heart, The Quartet Puzzle is a deviously tricky disentanglement puzzle, named after the number of pieces involved. There are 4 pieces total that form the...
The Trap Puzzle - Challenging Puzzle
This inventive adaptation of the classic disentanglement puzzle “Salvador String” requires even the most experienced puzzlers to exercise patience and caution as they try to free the trapped ball in...
Japanese Interlocking Ladder Puzzle
The Interlocking Ladder Puzzle is based on the "Japanese Crystal Puzzle" originally designed in Japan circa the 19th century. This stunningly ornate and intriguing device is one of the most...
Trinity Metal Puzzle - Very Difficult Puzzle
Very difficult metal puzzle by Hanayama. The Trinity puzzle is made out of three pieces that lock into each other. None of the pieces is uniform, which makes it difficult to discover the...
Safe Puzzle - Very Hard Puzzle
Can you open the puzzle box safe and free the Euro coin? A very hard puzzle with a double-layered labyrinth maze. The goal of the puzzle is to open the safe and...
Cylinder Spin - Brain Teaser
Here we have a clever spin on the classic Rubik’s Cube brain teaser. Cylinder Spin contains 16 multi-colored balls inside four rotating, inner cylinders. Each cylinder can be swiveled around...
Safecracker Puzzle - Math Puzzle
Our most popular math puzzle! Can you find the combination? The goal is to arrange the 16 rows so that the total sum of each row is the same. Some...
Nutcase Puzzle - By Oskar van Deventer
If you’ve ever felt like a nutcase yourself while solving a puzzle, look no further! The main objective for this Nuts & Bolts style puzzle is to free the small,...
Titan Brass Puzzle - By Felix Ure
Very hard metal puzzle and very satisfying to solve. The goal of the puzzle is to open the sphere. The Titan brass puzzle is a simple-looking, yet highly challenging take-apart puzzle. This is...
Enigma Puzzle - Very Difficult Metal Puzzle
This super hard puzzle was considered for many years impossible to solve. The Enigma metal puzzle was originally designed in 1975 in the USA. Recently Hanayama made a new version...
Wooden Sudoku Cube Puzzle
This new puzzle from Kubiya is tailor made for all the Sudoku addicts out there! We’ve taken Sudoku from 2D to 3D with our handmade, wooden Sudoku Cube. Just like...
Pentomino Puzzle Set - with 65 challenge cards
The Pentomino Set is a classic mathematical puzzle that offers 2D and 3D challenges with thousands of solutions. Each set contains 13 pieces. 12 of these pieces are different shapes...
Sky Tower - Complex Packing Puzzle
Put your architectural skill to the ultimate test by building a 10 story tower reaching up to the sky! The aptly named Sky Tower Puzzle is designed by W. L....
Tricky Drawer - 4 Piece Burr Puzzle In a Box
Our Tricky Drawer Puzzle is one of the hardest interlocking puzzles in our collection. It’s modeled in the style of the many famous Burr puzzles in the same collection. Tricky...
Piston Puzzle - Sequential Discovery Puzzle
A beautiful mechanical puzzle crafted from solid brass with a unique, seven-stage, sequential discovery solution. The goal is to find the brass ball locked inside the cylinder. Designed by Felix Ure the puzzle is rated...
ELK Cast Puzzle - Very Hard Puzzle
ELK cast puzzle is based on the original famous puzzle from the 19th century, which has been successfully revived in a new form. The key word here is "antlers". Can...
Gift Card
Shopping for someone else but not sure what to give them? Give them the gift of choice with a Kubiya Games gift card. Gift cards are delivered by email and contain...
3D Pentomino Chess Cube Puzzle
Packing puzzles can challenge even the most experienced puzzlers! The 3D Pentomino Chess Puzzle is one of the hardest packing puzzles we have in our collection. This puzzle takes the...
Amour Puzzle - Hanayama Level 5 Cast Puzzle
A great puzzle by master Akio Yamamoto. The two independently linked loops make this puzzle extremely challenging. Your goal is to remove the masterfully interlocked 'Adam' and 'Eve' loops from...
Diamond #33 - Challenging Burr Puzzle
Burr puzzles have been astounding and confounding master puzzlers for ages, and there are many variants that all circle back to the idea of an interlocking puzzle. The Diamond #33...
Peg Solitaire - IQ Game
Peg Solitaire is one of the most famous strategy games for one player. The objective is simple: remove all of your pegs from the board, leaving only one. Like many...
Hip-Flask Puzzle - Sequential Metal Puzzle
A premium mechanical brass puzzle by Felix Ure. The Hip-Flask puzzle is a multi-stage, sequential discovery puzzle. The objective of the puzzle is to remove the lid of the flask - but to do so you will...
High-Quality Metal Puzzles - By Felix Ure
High-quality mechanical metal puzzle set. Those are the first two puzzle designs by Felix Ure (Titan puzzle and the Hip-Flask puzzle). Both puzzles are very hard to solve. Titan Puzzle - Very hard metal puzzle and...
BrainStorm - Wooden Assembly Puzzle
The BrainStorm Puzzle is a curiously inventive variation on the classic, beloved Soma Cube. It’s made up of 12 wooden pieces, and the objective is to configure the pieces together...
Crazy Hard Puzzle - Group Special #2
If you are an experienced puzzler who loves to take on difficult challenges, then you might want to consider this set of puzzles. Created specifically for people who can solve...
2E Puzzle set - Group Special #4
Think. Build. Solve. Play and Have Fun Puzzling! Explore the world of coding, building, and problem-solving with our carefully curated collection of brain teaser puzzles. Whether you're looking to challenge...
