Mega Six (craftsmen range version) designed by Bill Cutler and made by Brian Young aka Mr Puzzle
Size 120mm x 120mm x 120mm (each piece 120mm x 30mm x 30mm)
From Mr. Puzzle´s Website:
"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.
Mr Puzzle’s version, designed with Bill’s help, has one extra cube removed to increase the number of false assemblies…. As if the original Computer’s Choice Unique-10 was not difficult enough!
Not only OUR hardest six piece burr but THE hardest six piece burr!"
Comes from a smoke free home and has always been properly stored.