Cast Radix

5 

I love this puzzle. So clever. The twisting undulations of this puzzle are next level stuff. I was able to solve it without forcing anything. I have some great Hanayama puzzles, but this is a favorite for sure.

5 

A very complex, great looking puzzle which is more difficult than its rating indicate. You can't solve it by only thinking because the moves of the subtle shapes are difficult to predict but it is very pleasant to discover slowly what is possible and what is not. I solved it in the subway between work and home and it was a perfect puzzle for that use: it is complex enough to keep me busy for an entire week and you don't risk to loose a little piece. Last good point: there are 2 other ways to solve it needing a little force (each is different for only half of the solution, so 2 different ways with some similarity or only one with no similar move), I love when a puzzle has it because it often is because of the complexity and it adds a real challenge because the recquired moves are not very soft and you have to know what you are doing and to think a lot before doing those moves! A great puzzle!

5 

Absolutely one of my favorites in the Hanayama cast series. It's not the hardest, but the elegance and fluidity of the (correct) solution makes it a gem in my collection. I have stumbled upon an alternate solution that, like others have stated, required just a slight amount of force, but it is not nearly as satisfying to solve in this manner. If you are an avid puzzle collector, then Radix should definitely be in your collection.

5 

Interesting looking and not that easy to solve. Although I have solved it a few times, when I come back to it after a while, I have trouble remembering how.. This is my friend Philip's favorite Hanayama puzzle.

5 

Wow! I never would have guessed how varied, and how many, strange manipulations could be hidden within these three "simple" shapes. I would say the difficulty rating should be set one level higher. In any case, it's a beautiful and challenging puzzle with many fascinating and tricky moves.

5 

This was my first ever cast puzzle and from that point on I loved hanayama puzzles. This one is my favorite. I still remember that joy when I solved my first ever cast puzzle.

5 

This is a very, very, very good puzzle! It took me several evenings to take apart. I tried to use logic, but only piece of it was correct. What was most difficult for me was to find out how to separate the two spirals and after I understood it, it took me additional time to do it (because of the third piece). I found the actual solution and did not find an alternative solution, but I believe that if force is required, even minimal, it is wrong. I don't know how they create these puzzles, but its definitely a research on many aspects so that only the solution works and everything else does not. This is one of the best Cast puzzles. Do yourself a favor and buy it for your collection or just for fun.

4 

Handsome three piece puzzle with the appearance of a sculpture. I picked this up two or three years ago and got it apart rather quickly. Putting it together is another story, and it wasn't until I picked it off my shelf much later that I decided that I would restore it to its original positioning. Some of these reviews talk about forcing pieces. I can assure you that no forcing is necessary, and it seems there are at least two solutions. The official solution is much more intriguing than the short cut that I stumbled upon. That's the thing with Hanayama puzzles--you never know what will happen at each turn.

5 

One of my favorite Hanayamas of the ~10 or so I've tried. The solution is elegant and unlikely to be found merely by random fiddling, yet it's an extremely fluid and beautiful movement once you find it. As for the forcing mentioned by others, I believe that a key step in the puzzle can be performed in two slightly different configurations, only one of which requires a force. I solved it with the forced version the first time, but upon further study I found what I believe to be the correct solution, which is perfectly smooth. I would peg this one at the top of the Level 4 range for difficulty. Outstanding and beautiful puzzle!

4 

I also need a bit of force at one point, almost everytime i'm trying that step; thus only four stars. I found easier solution for the last step than the one in hanayama provided solution.

5 

Great puzzle! Probably the hardest of the 8's. It took me about 25 minutes, but people's minds work differently.Very smooth and fluid movement. Highly recommended.

5 

Just like the Baroq, a true Akio Yamamoto masterpiece. It's way harder (IMO it should be 6/6 on Hanayama scale) but it has the same smooth, organic flow and looks. It's a very tough puzzle (physically), so it's impossible to break it during normal play. I have, however, experienced several cases when it was forced into a position that seemed a total lockdown (no further movements available). Luckily, I've managed to reset it every time. As the others mentioned, I too have an issue at one place, where it requires deadly precise moves or it needs to be forced.

5 

It's actually quite cool, the only gripe about this, the thing is much more difficult to put back in the proper state. I got it solved fairly quickly, but it took 3x more time to actually put it back together properly. I don't know how, but I finally managed to do it with enough of monkeying around. It certainly looks good on the shelf, kind of a mysterious shape.

5 

A wonderful and beautiful puzzle, however, there is more then one solution, I found the wrong one (the one not supplied). For even more fun, try to find the way to remove one piece before the other.

5 

If you like Baroq then do yourself a favor and get this beautiful sculpture. A tough solve. Magical!

4 

This puzzle is really nice looking, but like JohnnyZ I also found that it required a bit of force at one point. This detracted from the puzzle more than it did for Baroq.

5 

A masterpiece of almost organic design. It is also quite difficult to solve. I had difficulty visualizing how it could even come apart.

5 

This one should be rated at least to level 9. Really beautiful piece. And movement is unbelievable......

5 

This puzzle was great! It was like the Baroq puzzle, but a bit harder. Also like Baroq puzzle there is a time where I feel like I had to force the puzzle, but I might not have had the pieces in the perfect angle or something...