For a puzzle to be rated a 9 or 10 it must be VERY difficult to complete the puzzle, and VERY difficult to memorise the puzzle's solution. A puzzle rated a 9 we expect that most people - say 80 % or so - will NEVER be able to master the puzzle without assistance from the solution.
The puzzle is to disassemble and reassemble the 4 piece interlocking framed burr. The four piecs are made up of just 3 burr pieces that fit inside a single fixed frame.
Designed by Turkish designer Yavuz Demirhan in 2011 this puzzle is an amazingly complex design with a level 14 solution from this solved state. When the puzzle is completed with the symmetrical light colour squares in place on each face there is just one solution and one possible assembly. If the colour pattern is ignored there are 3 solutions from 5 possible assemblies.
Edward Hordern IPP Puzzle Exchange - Berlin, Germany August, 2011 Presented by Karst Nauta. Made by Brian Young @ Mr Puzzle Australia. Designed by Junichi Yananose.
Status: 30th March 2013. Only 7 left. Once sold we won't make this puzzle again.
The Burrliner Kruse is a 12 piece plated burr based on the Altekruse type burrs.
The puzzle is a completely new design by Junichi Yananose, who took his inspiration from the original and well-known Altekruse Puzzle. It was a 'by-product' of the analysis he did to create the Windmill Burr http://www.mrpuzzle.com.au/prod93.htm that we made in the 2010 Limited Edition series.
You can choose to have the burr sent assembled or apart. It's challenging to take apart (Level 4-2-3) but receiving it in pieces really makes it more tricky. If you're comfortable doing burrs this is still difficult but doable (and it comes with a very detailed printed solution if you get really stuck).
Junichi originally name it New Altekruse Type 04 but Karst named the puzzle as a reference to the historical inventor William Altekruse and to the International Puzzle Party in Berlin.
The puzzle is made from Australian Rose Alder. Size: 100mm x 100mm x 100mm
Find the way through the double layered maze and free the Euro from the labyrinth. A very, very hard puzzle puzzle designed by Jürgen Reiche at Siebenstein-Spiele. Difficulty level 6 out of 7.
This is the improved metal version of the first puzzle box Wil designed back in 1984. But in reality this is a sequential discovery puzzle not a puzzle box as most understand a puzzle box to be.
The puzzle is to remove the gold annodised metal rod inside. To do this you do not need any tapping, no magnets and no external tools. Everything you need to solve the puzzle can be found inside the puzzle itself. The puzzle is made more difficult because you cannot see anything inside the box as you're solving it.
When you start the puzzle you can see into the hole in the bottom of the box that the gold anodised metal rod has a sad face on the end. You'll have done the puzzle when you've removed the rod and put it back so that you can look into the bottom of the box and see a smiley face on the rod.
An elegant solution. This means that no element of luck is necessary to solve the puzzle. It can be solved at will with distinct and definite moves.
Edward Hordern Puzzle Exchange - Chicago, USA, August 2003 Another completely new design by Brian Young.
The puzzle is to take the SEARious burr apart. Modelled on Chicago's tallest building, the Sears Tower, Brian created this 13 piece interlocking burr. But it's so much more than just an interlocking burr; incorporating the use of tools supplied as part of the puzzle it's biggest challenge is to open the secret lock. It will take 13 moves to unlock the secret internal mechanism. (The elegant solutions does not involve force, or banging, or hitting against another surface).
Considering it has no gravity pins or magnets Brian considers it to be the hardest progressive move discovery puzzle he's designed so far.
Status: 20th February 2013. We have 5 of these puzzles still available.
For the top part of the puzzle Brian was looking for a complex but rare burr that could attach to the main shaft of the puzzle without coming apart accidentally. He decided to use Stewart Coffin's design called Triple Slide. Although Stewart does not seem to have allocated this puzzle it's own number in his system he did describe it as "having a most unusual action to assemble". Bill's Cutler's analysis in the late 1980's found it to be a unique level 3 solution.
Brian created a new design to wrap around a central post by using 4 six piece burrs that must work simultaneously. The 16 piece burr is a level 5-5-22 burr; very solvable, especially when you have 200+ international puzzlers in your backyard! In fact the giant puzzle was taken apart and reassembled by a group of enthusiastic puzzlers on the IPP27 Giant Puzzle day. A copy of BurrSolver solution file for both upper and lower burrs can be supplied upon request.
The puzzle is to return the 3 x 3 cube to its original state... every side finally having a solid pattern.
This very classy makeover of the Rubik's Cube puzzle gives the icon of the 1980's a modern look with it's stainless steel fabrication. Each side uses stylised etched patterns to represent the six differently coloured sides. It is well made so that it turns very smoothly and is presented on a highly polished stainless steel cube stand for display. The rubik cube itself is the same size as the original Rubik's Cube.
3x3 original Rubik's Cube designed by Kit Grover in 2006 for Metropolitan Museum of Art (New York).
This New York themed Rubik's Cube features a line drawing of midtown Manhattan with MoMA in its center. Designed by London Artist, Kit Grover, to celebrate the special relationship the museum shares with the city as a cultural landmark and a destination for tourists throughout the world. You'll be occupied for hours with this authentic Rubik's cube.
Cube is in it's original package as it was sold by MoMA.
The puzzle is to return the cube to its original state... every side finally having one solid color. The Rubik's 4x4 cube (otherwise known as Rubiks Revenge) was released more than 20 years ago and remains one of the classic Rubik's must have puzzles.
This puzzle really does show a case of 'don't judge a book by it's cover'. It may look like other six piece burrs on the outside but it is DEFINITELY not. The puzzle is incredibly more complicated than the commonly known six piece puzzle. This photo shows the Mega Six when it's about half way together or apart).
Bill Cutler first used a computer program to analyse six piece burrs in 1974 but it took until 1990 to analyse all possible six piece burr combinations.
Mega Six is the result of that search for the maximum number of moves for a six piece burr with a unique solution. This does not mean it has a unique assembly, due to the number of internal voids. In theory the pieces should fit together in 20 different ways however, the reality is that you can physically only put the puzzle together in one of the 20 assemblies.
Not only OUR hardest six piece burr but THE hardest six piece burr!
Covered by Australian Design Registration No 151844 and is made under license to Bill Cutler.
This puzzle is also available in our Craftsman Range in Jarrah, Blackbean or Silver Ash (Click here).
This puzzle really does show a case of 'don't judge a book by it's cover'. It may look like other six piece burrs on the outside but it is DEFINITELY not. The puzzle is incredibly more complicated than the commonly known six piece puzzle.
Bill Cutler first used a computer program to analyse six piece burrs in 1974 but it took until 1990 to analyse all possible six piece burr combinations.
Mega Six is the result of that search for the maximum number of moves for a six piece burr with a unique solution. This does not mean it has a unique assembly, due to the number of internal voids. In theory the pieces should fit together in 20 different ways however, the reality is that you can physically only put the puzzle together in one of the 20 assemblies.
Not only OUR hardest six piece burr but THE hardest six piece burr!
Timber varieties: 2. Queensland Blackbean (sorry these are no longer available - 1. Queensland Silver Ash 3. Western Australian Jarrah)
The puzzle is to remove the 4 burr pieces from the cross frame.
Japanese designer Osanori Yamamoto has been publishing his puzzle designs since the start of 2003.This is one he released in 2012.
The frame is a symmetrical crossinto which the 4 burr pieces fit.They can be removed and reinserted into the frame.
There is a unique level 30.6.3 solution.That means that it will take 30 moves to remove the first piece then another 6 to remove the second piece and still 3 more to get the third piece out.
Mr Puzzle - We've got puzzles! 
