Elevator was designed by Jos Bergmans and Richard says it is one of his favourites (I can see why). It consists of 6 brightly coloured pieces including one which is effectively a complete loop. I started with this and then tried to work out where to go next. This is quite a struggle when all you know is that it needs to be a cube and nothing more! Knowing it is a 4x4x4 cube tells you that 3 of the remaining larger pieces need to go through the loop and then you proceed to try to get them to fit. It is relatively easy to work out how to get the first 2 in and you then confirm that you have got it all planned out right as there are gaps for all the other pieces. The real problem is getting the 3 piece through the loop - which order does it go in? How do you make space?
I tried for about 30 minutes before a stroke of genius hit me (makes a change from the wife!) and I was able to slot them all into place. after this the final pieces are easy. This makes for a great challenge. It is a very snug fit but apparently will loosen with use.
I have to say I am really looking forward to more puzzles from Richard. There are at least 2 more on his site that I am interested in so far including the recent Superstrings puzzle which one Jury joint first prize in the Berlin IPP. Unfortunately when this came up for auction at Puzzleparadise recently I was off-line and missed the opportunity! Hopefully he will put up some more coloured ones on his Etsy store.