one of my favorite puzzles. it was the first hanayama one i tried. took about 5 or 6 hours to figure it out. the trick itself is very simple and i thought of it in the first 5 minutes. everyone who has solved the puzzle or will eventually can understand where the 5-6 hours came from... all tho i have seen people done it in less than 5 minutes i think it is just pure luck... enjoy :)

Great puzzle... The solution is quite unusual, it really makes you think out of the box. A child probably has no chance of solving it, unless by a happy accident. It took me less than 5 min to solve it, though. Actually, I once had solved this kind of a puzzle on a technical interview for an IT position. After monkeying around with it for 20 min, I was given a hint, after which the solution shortly followed. I am not going to share this hint with you here, though ;) And yeah, as you might have guessed, I got that job :)

I love this one even though I was only stumped for 15 minutes or so. I found "the secret" to devilish improvement from puzzles of the past. Mine was very well made, and can be reliably separated and rejoined. In fact it is the solid construction that pushes this not-so-difficult puzzle to a 5 star rating.

I agree with Rob below. This is is a clever idea for a puzzle but they are not made well and don't work like they should. at least mine doesn't. (I didn't get it from puzzlemaster BTW). I happened to solve it in 5 mins, but friends who also approached it correctly could not solve it, because the innards of the thing are built cheaply and don't work properly (on mine). Get a cast quartet instead.

I love the method for the opening of this puzzle. Unfortunately, it just doesn't always "work." What stinks is that when someone actually figures out how to do it and tries the correct method a few times, it just doesn't always work and they assume that the correct method is not the method. I don't think this is made as well as I'd like to see this puzzle made. There is a more expensive puzzle which uses the same method and it is amazingly made. I don't want to say any more and reveal anything.

i really love this one! its level MAX! and like Level 0 from all! totally UNIQUE! even i already open it from my friend! i still get one to collect!

I purchased all 6 of the level 6 Hanayama puzzles and began solveing them slowly at first, however this one proved a little more interesting. Though I knew the solution, the application was different. I enjoyed this particular puzzle and my co-workers are also entertained by it. I highly recommend this as well as all puzzles as great party and work conversation pieces and frustateing humor, though for those who have a little more difficulty solveing them. Thank you very much Puzzle Masters for the oppurtunity and enjoyment of your site.

I was really excited to get this one, but I solved it in less than 5 minutes. For a being the highest level of difficulty, it really let me down. The best part is watching other people try at it. I don't want to give anything away, but it was the easiest puzzle I've done from this set.

I didn't like this one as much as chain or quartet. That's because for me the solution was not intuitive. I expected a button to be hidden on the face of the puzzle,but not so.This one was maddening for a few weeks then I was playing with it, and it literally came apart in my hands!!! Half-heartedly recommended, but it's a stumper...

WOW. This one drove me absolutely crazy for months! I'd pick it up and fool around with it but I just couldn't figure it out. Then one day out of the blue I had a crazy idea and it worked! This is definitely my favorite cast puzzle, a must own.

This started an obsession for me. I now own around 25 metal puzzles. I opened this puzzle and engraved a message on the inside for my girlfriend. It took her two days to open it. Still the best and still my favorite puzzle...Get one now!

I solved this one in a unique way from the official solution. (Comment has been changed to omit the solution to the puzzle) Very ingenious puzzle.

I solved this in under 5 minutes with no hints but I guess I was lucky.

After reading all the great reviews, I was excited to take a crack at this one. Unfortunately, the one I purchased had a piece missing from the mechanism that made it pretty easy to solve, so who knows if I could have figured it out! Hopefully I can get a refund (I didn't buy through puzzlemaster).

This puzzle was very frustrating to me and no one at my school could figure it out either. (which is quite funny because they were a bunch of brainiacs then one day it just fell apart in my hands then i realized how to open it very creative and for me getting it open is just sheer luck.

Brilliant and fantastic. Truely unique solution. simple and elegant and well... WOW...

Clever and unique solution. I liked this. Quite demanding.......

This puzzle really was terrific. It was Very unique, and hard to solve. Though once you figure it out you feel so stupid at how easy it is to actually get the pieces apart!

This puzzel is brilliant, it really gets you thinking - frustrating at times - but brilliant all the same. I was fortunate enough to have all but abandoned it when a collegue moved it from my desk when it literally came apart in his hands. It was only then I could see the solution. You are well aware of the principle required to open it but are constantly stumped when it just wont open !! One of my favourite puzzles.

This is one of my favorite puzzles. Not only because it is one that took me more than 24 hrs to solve (there's few I can't solve in under an hour), but also because of the sheer elegance of the solution. You already know the principle required to solve it from grade school - but what's maddening is that even if you unlock the one piece, the other one locks. There's no way to see what's inside - you have to think about what's going on inside.