Continuing on my packing puzzle challenge, the second puzzle I bought from Brilliant Puzzles was Impossible Square. Have a look at my review of Log Jam which was the first of the puzzles in that shipment. Puzzle Crafthouse also have a copy of this puzzle available.
Much like the Melting Block puzzle, the goal of this one is to fit the red block into the tray, so that the lid can be closed. Fortunately, the lid also doubles as a base, so until you solve it, you're not left with a badly fitting box! As is normal with this style of puzzle, at first look there seems to be little free space, and fitting that extra cube in seems nigh on impossible (hence the name).
The puzzle measures 5" x 5" x 1.25" and is very well made. The pieces are all very nicely cut and well finished. If I were nitpicking, the tray is a fraction larger than it should be, but really that's me being very picky. It certainly doesn't change the puzzle any, and there are no extra solutions as a result.
I found this puzzle fairly straight forward, and it's certainly not one of the more difficult packing puzzles I've tried. I was able to solve it in under 5 minutes, so for me I felt pretty good. As I've mentioned before, packing puzzles are not my forte, but maybe I'm getting better.
Having lent this to one of my work colleagues, he also solved it within 5 minutes, so I'll say that this isn't a hard puzzle, but it certainly is a good looking puzzle, and had the effect that it does look impossible to start with, and once solved, it's a very elegant solution. One thing which seems to help with this particular puzzle is the symmetry in the pieces. Unlike a number of other packing puzzles, having a number of identical pieces, limits the number of possible solutions, and I feel makes things easier. Really you only need to solve one corner and then the remainder are copies of that corner.
So just to show that it's possible, here's the puzzle in its solved state...
Ok, you really thought I was going to give you the solution? But that said, all pieces are in the box, but you'll have to trust me on that! The puzzle does come with a solution included on a folded sheet of paper so you're not going to accidentally see it, but I honestly don't think you'll need it. If you do, you know it's there.
This is a great little puzzle, and well worth the small price that both Brilliant Puzzles and Puzzle Crafthouse are asking for it. It may be quite simple, but it's a great puzzle to hand to new puzzlers to get them hooked!
Note Puzzle Crafthouse is the new name for Creative Crafthouse. They have a new website, which is much newer and cleaner than the old site, but don't stress, it's the same company with the same great service and puzzles
As a member of the Karakuri Group, when I renewed my membership at the start of the year I decided to pick up a few of the DIY kits that they offer. After my experience with Bruce Vinney's designs I was interested to see what Karakuri Group had created, and also to better understand the mechanisms used, which is one of the goals Karakuri set when making the kits.
When I mentioned that I had the kits on one of the puzzle forums, there were requests to show how to build them, so much like I did with the previous kits I built, I decided to show the build process in full. Watch the video below to see the build, and watch the kit come to life. In the video I'll cover all the tools I use and this isn't time lapse so you can see everything in real time. I'll be doing videos for all the kits shown in the video, so check back for more soon.
As promised in the video, you'll find the instructions below, with my guide to building the box. Be aware that this is in no way a translation of the instructions!
General Kit Comments
The Karakuri group offer a reasonable number of DIY puzzle boxes which they refer to as "Work Kits". Each of the kits consist of a number of pre-cut plywood pieces, some decorative pieces (like the beautifully made acorn on the Acorn Box), and any hardware needed for the mechanism, if it's not just a straight forward sliding panel or suchlike. The kits are all perfectly cut, and of the kits I own there have been no issues with the fit or finish on any of the pieces.
Something which is worth noting about the kits is the price. They all come in at around the $25 USD mark, so in terms of affordability, these are really affordable boxes. The quality of the cuts on the pieces is excellent and the fit is as good as you will find with anything from the Karakuri group, so I'd say from that side of things, they're great value.
One thing to note is that the build instructions for the kits are in Japanese language only. Don't be put off by that however as with a little thought, and some careful study of the diagrams, you'll build the kits just fine. Failing that, have a look at my Build Instructions section below, where I have detailed the steps (in English) to build the kit.
Kakukaku Kit Review
The first of the kits I built was (as you already know from the title of this post) the Kakukaku Box. I picked this one for no other reason than liking the look of the box. Interestingly it was the last of the four that I picked, and really the only reason was that I had set a budget and this fit within that budget after having picked the three others I wanted.
As you can see from the picture above, the box itself is fairly simple. The ply is visible on the top of the box, but personally I don't think that's an issue. If you don't like having the ply exposed, you could glue some veneer onto the top panel just to make it neater. The laser cut tree certainly adds to the look of the box, and is also a clue as to the solution.
Building the kit was fairly simple. The diagrams on the build instructions are very clear, and there's nothing complicated to this kit, so I didn't have any issues building it. The video is real time, so it took about 15 minutes to put together, and would probably be quicker if you're not recording a video and talking through everything you're doing!
As far as the puzzle box itself is concerned, I'll be honest that I was a little disappointed with the box. I have two reasons for this, and at first they seem contradictory, but bear with me.
The locking mechanism is both too difficult to open, and too easy to open at the same time. If you attempt to open the box using the 'solution' provided, it can be very difficult to move the two parts of the box in the right way to get them to open. The fit is pretty good, and as such the movements need to be made very precisely to get the box open. Sadly, there is a much simpler way to open the box. If you hold the top of the box, and shake it, the bottom falls out on its own, making it far too easy!
As a kit I certainly enjoyed building it, and you will understand the mechanism once you've built the box, so it certainly meets the expectations that the Karakuri group set out to achieve. If you're thinking of buying one (or more) of these kits, I'd say that there are better boxes in terms of the end puzzle that you could get, but if you just want to add them all, then go get it!
In this section I will try to give my guide to building this kit. Please note that this is in no way a translation of the Karakuri Group's instructions, but my own instructions based on having built the kit. If you have issues following my instructions, feel free to get in touch and I'll help you if I can, and update things below to clear up any confusion.
The instructions below match to the numbers on the diagram above.
Before starting, you'll need a couple of tools.
- Wood Glue / Elmers hobby Glue
- Ruler (or some measuring device)
- Tape - I recommend blue painters tape
- Glue Brush (optional)
- Engineers Square (optional)
Step 1 - The Locking mechanism
First up, sort the parts from the kit into the same order as shown in the top diagram. If you feel like you need to then you can mark the piece numbers in pencil on the inside of each piece. The way the pieces are laid out in the diagram shows the inside, with the exception of piece 'B', which will be inside the box and unlikely to be seen so even if you don't remove the pencil mark, probably not an issue. In my opinion, the pieces are pretty clear so you should need to label them.
Take Piece 'A' and lay it as shown in the diagram. The sides with the notches cut out should be at the top and right of the piece as you look at it.
Take Piece 'B' and glue it into the centre of piece 'A'. The piece fits snugly between the wooden blocks that surround the piece, so no adjustment or fine placement is required. Make sure that the lip on piece 'B' is on the left and top as you look at the piece. This can be confirmed by the angled corners as seen in the diagram.
Leave the top for around 10 minutes for the glue to dry (note if the glue you are using takes longer to dry, then follow the manufacturers recommendations).
Step 2 - Top Decoration
Once the top of the box is dry from step 1, flip the piece over so that the cut away sections are now on the top and left of the piece as you look at it.
Using a ruler, mark the centre of the piece, making note of the cutout which will not be seen once the box is complete.
With the centre identified, glue the tree piece to the centre as seen in the diagram.
Step 3 - Inner Box
Take the parts labelled 'E' in the diagram. The flat square is the base of the inner box. There are two sides with notches cut in each end, and two with no notches cut.
Place the base in the centre and then around that the two pieces with notches in the ends above and below it, then the two without notches at either side as seen in the diagram on the right.
You will notice that there is a grove running through the with of all of these pieces. The base will go into one of these slots, and the other is part of the locking mechanism.
Put glue into the notches on either end of the top and bottom pieces and using a brush, spread the glue evenly into these notches. Bring all four sides together around the base as seen in the lower left diagram.
Once all four pieces have been brought snugly together, tape the corners and check that the corners are square using an engineers square. Note: This check is not really needed as the pieces are designed to give a good square corner.
Note: You can put tape on the corners before adding the glue. This can make the job of taping the corners easier rather than trying to get tape around the corners after they are in place.
Leave the inner box to dry.
Step 4 - Outer Box
Take the top which was completed in step 2, and place it as seen in the diagram, where the cut-out sections are at the top and right of the piece as you look at it.
Taking pieces Labelled C-1, C-2, D-1, D-2, place these around the top as seen in the diagram.
Pieces D-2 and C-2 have a piece of wood inside the groove which ensures the pieces are correctly located in relation to the locking mechanism, and the centre of the box.
Pieces C-1 and D-1 have no insert in the groove, and will slide freely along the length of the top.
Apply glue into the notches on either end of pieces D-1 and D-2 and using a brush, spread the glue evenly into these notches.
Bring all four pieces together around the top as seen in the diagram on the right, starting with pieces D-2 and C-2 which will ensure that the pieces are correctly centred.
Once all four pieces are in place, tape the corners together and allow the top to dry. You can check the top for squareness before it is dry however as with the inner box, the pieces are designed to give a good square corner even without this check.
Note: As before putting tape on the piece before gluing can make this easier
Step 5 - Opening and Closing the box
To Close the Box, place the outer box onto the Inner box and move the top Right and Up as per the green arrow in the diagram. The box is now locked.
Top Open the box, move the outer box Down and Left as per the blue arrow in the diagram, then lift the top of the bottom. The box is now open.
I recently put in an order for a few wooden packing puzzles since I've found a liking for them recently, after spending a long time not being very good at them. I made an order with Brilliant Puzzles who have a good selection of wooden puzzles at very affordable prices. The first of those puzzles I'll be reviewing is Log Jam, or "Log Pack" as it is known on the Brilliant Puzzles site. The puzzle has seven pieces in the tray, and an eighth in the end. The goal of the puzzle it to fit the extra log into the box, in typical packing puzzle style.
Designed by Vesa Timonen, this is a fairly well known puzzle design, and was entered in the IPP 22 design competition where it was known as Lox in Box. I've been looking to try it for a while, after reading Brian's review and having seen various copies of the puzzle in friends collections. The copy from Brilliant Puzzles is not expensive, and as I was ordering something for Jen, I decided to added this to my order. Creative Crafthouse also make a copy of this puzzle.
The puzzle comes sealed in shrink wrapped plastic, with the solution sheet folded and on the bottom of the puzzle. At least you can avoid accidentally seeing the solution. It's 7.5" x 2.75" x 1.25" and made from two contrasting woods. If I were to guess I'd say the wood used is rubberwood, which seems very common in the cheaper, mass produced puzzles that I have seen recently. Given the price, the quality of the pieces is what you'd expect. This isn't a high end collectors piece, but a puzzle to be played with.
The fit of the pieces is fair, and the puzzle functions exactly as it should. As nice touch, and something which seems fairly common with this design is that the extra piece has a place in the end of the puzzle for storage so that the puzzle can be kept in its unsolved state without leaving pieces stacked, or losing the piece.
When I had seen this puzzle elsewhere, I'd tried mentally solving it, so before I started I had a few ideas to try. After a few minutes I'd exhausted those, so I had to think a bit. Sorting the pieces, and then looking at what I had let me see a possible pattern, and after another few minutes of playing I had the solution. It's a very elegant solution, and well worth getting a copy to play with. The design of the pieces and the initial presentation leads you down one avenue of thinking while the actual solution is quite different. It is something that I have noticed with these 'fit the extra piece in' style puzzle that the initial presentation is often designed to start you off on the wrong path, and this is no different. Very clever.
In the solved state, the fit is not as close as I would have expected, and there's still a degree of wiggle room in the tray. Not enough that there's a different possible solution, so perhaps it's just the perfectionist in me looking for more. As you can see from the closeup of one of the logs above, the finish on the pieces is pretty rough, and the tray shows some signs of the fit and finish not being stellar. But as I mentioned earlier, this is a puzzle to be played with, and not a collectors piece, and that is reflected in the price.
For the price, this is a great puzzle, and I'm happy to have had the chance to play with it.