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This is a great cube. As an engineer, I'm really impressed by the design and quality. I always have a complaint about product design, but I could not find any flaws in this.Contrary to the reviewer who said it came apart, it does not appear possible to take it apart without a screwdriver. The center caps can be popped off with your fingernail to reveal the screw inside, one on each side. You tighten the screws to make it a "tighter" cube to be less "sloppy" in turning, but this will come at a cost of "forgiveness" in turning. It seems too flexible when you get it, but it might be set pretty good. I tightened mine up about 1/4 to 1/2 turn on each screw.The colors are just as vibrant and nice as the picture shows.I'm enthralled by this 5x5 that I seem to have lost all interest in my 3x3. I wanted a 4x4 but my son was more impressed with a 5x5 and now I am very happy I got this one.I'll pausing here in my original review for an update: After solving it probably over 100 times, I can now do it in 8 to 9 minutes. The update I want to mention before I continue is that you can figure out how to do all of the interior (non-side, non-corner) pieces by figuring out your own methods, except for the final 2 or 3 pieces which will need the first 2 patterns I'll describe below. Basically, you do one side (easy) then the opposite side (first get 3 in a row before turning them into place, but turning the white that you've displaced out of the way before turning the yellow again then but the 3 white back in place with a turn before turning the yellow back in place). The opposite side is not as easy to figure out, but the challenge is the fun. Then you get one of the sides correct (easy) then get one beside it in place (a little more work), then do a couple of turns to get the remaining two adjoining sides mostly done, then do the 1st and 2nd pattern, about once each. The thing that keeps taking me a long time is searching for needed pieces when doing patterns 3 and 4. I'm thinking about trying to get them matched up with their "interior" pieces, mostly, during steps 1 and 2. It will still require searching but will save doing patterns 3 and 4. Anyway, I am enjoying the search and OCD behavior in repeatedly doing it without trying to cheat by seeing how other people do it.The instructions are great because they're so awful. The bad "Engrish" and the challenge in trying to figure them out was fun and challenging. I specifically refrained from trying to do a web search to get good instructions. Example of the instructions: "When we recover the centre block we will meet some problem, but normally have two condition. Recover the center block is agile step. You lean these 2 formular must think it's thinking." The instructions made it 3x harder than it should be. I could really only understand the 4 patterns and one of the images is wrong, so I had to apply the patterns to see what happened. Then I had to use a little but of thinking to get the pieces in the right place so that the 4 patterns could always be used. Also, for what they call the 2nd step, (the 3rd of the 4 formulas) I needed to also use its mirror image (or some type of "inverse") of the pattern for half of the pieces. So after an hour I had the 4 patterns figured out.Edit: In the summary below, my "edit" comments show that even after learning the patterns, there is a fun challenge in figuring out ways to use the patterns to reduce the total number of moves.Summary of solving:===============2 patterns of 7 turns each applied to "middle" pieces (not the corners, not the sides). If 30% of the pieces are in place by luck and you do the 1st side without these patterns (as easy as doing 1st side of a 3x3) then you might need to apply this pattern 25 times. Edit: I have since found out that it's not too difficult to figure out how to solve 4 of the middle sections without this pattern, and if you do it so the final two sides are adjacent and half of the pieces are in place by accident then you have to apply each of these 1st 2 patterns only 2 times each. To do a side without this pattern first get the middle piece in-line with 2 other pieces, then get 3 pieces in-line on a side that is not this side you're working on, then kind of twist things in and out of the way to get the 3 in place without messing up a previous side. Then do it again for the reaming 3 for that side. Certainly this is not a sufficient description, but it might help as a guide in figuring it out. So in about 11 moves you can have 3 in place (instead of 3 x 7 = 21 moves).1 pattern of 7 moves, and it's mirror image, applied to get the 3 side pieces (that make up each side) together for each of the 12 sides. 25% seem to be in place by luck, so (100% - 25%) x 12 x 2 =~ 18 times. (you apply it to 2 of the 3 side pieces, for each side) This is the longest step, mainly because you have to search around a lot to find the piece you need to get in place before applying the pattern. And 18 times 7 moves each is a lot of work. Edit: the way you get the 1st piece in place for a side will determine if step 4 needs to be applied. In effect, there are 3 extra turns needed for 50% of the sides to get the 1st side piece of each side into the correct position and orientation to prevent the 15 turns in step 4.1 pattern of 15 turns applied about 6 times to the sides to orient ~50% of the 12 sides that are not oriented correctly by luck. If you mess up, you have to go back to and apply step 1 and 2 several times, then all of step 3, losing 10 minutes of work. Edit: As I said in pattern 3, I have found out you can apply the 3rd pattern in a way so that this 4th pattern does not need to be applied to that side, but your last side in applying pattern 3 may end up requiring this this pattern.Now solve like a 3x3Here's more detail on solving.The first 3 patterns are pretty simple. The 4th one is challenging and took me about 20 times before I remembered it well enough to not make a mistake. After solving it 10 times this weekend, I'm down to 16 minutes, and I do not know if I can make a lot of improvement. I can solve a 3x3 in 80 seconds using the simple basic method. 40 seconds is my record on 3x3 due to some luck. Someone else here said he can solve this does it in 7 minutes.After you apply the 4 patterns you have it organized in a way so that you can solve the rest like a 3x3. So it adds only 4 patterns to the 5 I use for a regular 3x3 (not counting 2 "mirror" moves I sometimes use to speed things up, and the 6 or so simple moves I use to get the initial white layer)

Bought this for my Son, who is 15 years old. The review is by him. "It is a fun toy. It turns smoothly. The instructions only teach you how to solve the cube, so you will need to learn how to do patterns by trial and error. Even though the instructions are not in English, I was able to follow the pictures along with the short-hand algorithm letters since they are the same as my 3x3x3 cube. I have had it for just over a week and have learned how to solve it in about 10-15 minutes. Before memorizing the algorithms, it took about 6-7 hours the first time I solved it with the instructions to solve it. Hope this helps you in deciding if this is for you or not."

At first, I was a little disappointed with this cube. It's a lot smaller than I expected. That's probably just my fault for not reading it well. However, I actually really love this puzzle. I managed to solve it on my own in about a day. Very nice quality. Turns well, corner cuts pretty well for a 5x5, cheap. It's a really great starter puzzle for a 5x5.

Liked it for the day and a half my son had it. He dropped it and it fell to pieces. Otherwise it worked great!

These were a favorite in the training group when we let people select what they wanted. They are sturdy and different so I was surprised but...

Kids love them

I thought I submitted my review a couple days after I purchased this, which was several months ago, but it looks like I need to do it again.Within days, this fell apart. It already moved rougher than other 5x5 cubes from the start, too. I know I can put the pieces back together, but, honestly, reassembling it is such a hassle I'd rather not spend hours trying to put it together only for it to break apart again.

Love this cube, I recently became interested in cubing and have progressed from the 3x3, to the 4x4, and finally to the 5x5 on Rubiks brand cubes. Their 5x5 has stickers and the worst turning experience I can imagine. This cube is the complete opposite. It turns smooth, doesn't catch on the corners, uses tiles, and has made learning and solving the 5x5 a real pleasure. I will go back and replace all my other cubes with this brand. LOVE IT!!!