September 2020 – Puzzle Pusher

Sloot 3 – Alfons Eyckmans

Ah, Sloot 3, a November 2019 release from Cubicdissection.com that didn’t seem to garner much attention. Perhaps this puzzle was overshadowed by many of the other amazing puzzles released last November – Split Maze Burr, Escalating Box, Small Box #3 & #4 come to mind.

I’m guilty of overlooking this one as well. Sometimes I order too many puzzles, can’t get to them all and so they end up in my “box of unsolved” puzzles. This one suffered such a fate. While my attention was on the small box series, this one collected dust and went forgotten. But, today is a new day and I’m feeling motivated to knock it out.

Sloot 3 is a very cool puzzle. It looks like a typical 6 piece board burr puzzle, but closer inspection reveals hidden complexities. The edges of the burr pieces have these outer slots into which tabs on the inner side of the boards fit. This restricts movement and adds an extra element that must be considered when disassembling this puzzle.

Maybe the coolest part of all this is that these outer slots are NOT simply routed into the wood. Eric has crafted these channels out of solid wood. It’s a subtle detail, but a very impressive one that really makes this puzzle stand out. It’s exactly these types of details that separates Cubic Dissection puzzles from the pack. The extra attention surely cost more time and material, but the result is worth it and why I choose to spend the extra money.

Attempt at a detail shot of the tabs and slots

So, I’ve been playing with this puzzle for the past couple of days. I think I am close to getting the first piece out, but I am currently stuck at a dead end. It’s a fun puzzle to manipulate. The channels and tabs prevent obvious movements thus a more calculated approach is required. The channels also keep this puzzle locked in tight. There’s no wiggle room.

A typical configuration during the solve. I was stuck in this area for many hours before I found “the move”

After several hours, I eventually escaped the repeating dead-end maze-loop and found an excellent hidden move. Bah! how did I miss that! What a cool puzzle! This little move opened up a whole bunch of other options and now I know that I’m getting close.

After a bit more manipulation I see how I can remove the first piece. Yes! fantastic! I remove the first piece and it’s not over yet. The puzzle doesn’t just fall apart. There’s still some calculated moves required to get out piece #2. But, it’s not too difficult and soon enough I have the whole puzzle apart! Awesomeness. Man it feels good to solve a puzzle!

Ok, the assembly. Truth be told, I took some photos of the final moves, so I used those as a guide to put things back together. I don’t know if I have the ability to do the assembly without help. It certainly would have taken a long, long time, and, well, I have more puzzles to do, so there it is.

Another shot of the disassembled puzzle. Look at all those tabs!

Overall a very fun puzzle that I found to be rather approachable despite it’s difficulty rating (16.6.4) Highly recommended if you can find a copy.

Pinned Framed Burr S – Junichi Yananose

Woot! Another Juno puzzle from Pluredro.com! I don’t buy a lot of puzzles from Pluredro, but this one looked unique, so I couldn’t resist.

This is yet another puzzle that I’ve been ignoring for too long. Released back in February 2020, I purchased this puzzle, along with the “L” version. Both have been sitting in a box in the basement awaiting my attention. Well, I’ve been on a puzzling binge lately, so let’s get started!

The construction of this puzzle is very nice. The framed box is super solid and the burr sticks feel substantial. If anything, this puzzle has a rather plain appearance. It doesn’t scream “pick me up!” like other puzzles do. But looks can be deceiving and the real allure of this puzzle is hidden away, out of sight.

There is a nice audible click and clack as I play with the puzzle which is super pleasing. It’s a borderline fidget toy as you can just sit there and watch tv while pleasantly click and clacking away. Every once in a while you find a new move and the piece push further into the frame which is very satisfying and encourages continued exploration.

The objective of this puzzle is to remove the 4 burr sticks. The burr sticks move by pushing on them, but hidden within the puzzle are an unknown number of pins and channels which must be negotiated in order to remove the pieces. The fact that these elements are hidden really adds to the fun and difficulty of this puzzle.

Pieces move in, pieces move out. Am I making progress? I don’t know.

I didn’t know how to approach this puzzle, so I just played with it. I thought about trying to map out the path that the pins follow, but the problem with that is that I can’t see the pins, don’t know how many there are or where they are located. So, mapping seems out of the question.

In the end, I didn’t even try to keep track of things, I just set my mind to removing the burr sticks and proceeded with a semi-reckless determination to just make it happen. And after many hours, I succeeded!

I was sitting on the couch pushing the burr pieces around (most of the time, I didn’t even focus on what I was doing) and suddenly a piece landed in my lap! Whelp, guess I did it!

Pieces removed. Very interesting arrangement of pins and channels for this puzzle!

Removing the rest of the pieces was a little challenging as it turns out some of the pins are offset, so they can only be removed after the first piece comes out. There’s definitely some hidden trickery happening here and it’s very, very interesting to handle these burr sticks and see how they interact with each other inside the frame.

After taking some photos and admiring the craftsmanship, I set to put it back together. Oh boy! I was expecting things to go relatively smoothly, but turns out re-assembly is quite difficult indeed! My first attempt failed. I think I put things together wrong in a way that would never be able to be solved. Some of the pieces moved around and I thought I was putting it back together, but there was one piece that didn’t seem to “engage” the other pieces, so I eventually had to back track, remove the pieces again and start assembly over.

I think I went through this process 3-4 times, spending hours trying to reassemble the puzzle with piece in the wrong place. Eventually, I got fed up with things, pulled all the pieces out and decided I needed to be more systematic. I examined the pieces, how they interact and tried to really understand things to help me better assemble.

I discovered that there were a couple of different ways to insert the burr stick that fell out first. One of the ways lead to dead ends, the other lead to the solution. It was true, I had been doing it wrong, so I tried the second option and things started to go together better. It still took me a couple of hours to get the puzzle back together though!

Wow! what a challenge. I really thought this would be more straightforward and easy, but it proved to be a worthy adversary. I’m quite scared to try the “L” version, as it looks way more complicated, which is scary indeed. Thanks Juno! I enjoyed this one.

PUMPKIN 1 – Osanori Yamamoto

Ya know, when Covid first hit I was kind of excited because I thought I would get to puzzle all the time. I figured that I’d be home a lot more and would have lots of down time and that I’d be knocking out puzzles and blog posts like a machine. Oh how wrong I was.

Turns out, I wasn’t the only one stuck in the house. My wife and kids were along for the ride as well which meant we have all been crammed into this house for a better part of 7 months. The result is that I’ve had very little personal time and thus very little puzzling time. I’m still buying them at an alarming rate, but haven’t been solving that many.

The other day, I said “enough is enough, I need to solve some of these things before I’m buried in them.”

So, I picked up Pumpkin 1, designed by Osanori Yamamoto and determined that I was going to solve it no matter what.

This particular puzzle was crafted by Pelikan Puzzles and is nicely built and a pleasure to play with. It’s made of Pear / Bubingo wood and there is a very nice contrast between the orange pieces and the tan box. It seems like Pelikan has been focusing more on these “more affordable” puzzles lately and I’m that’s fine by me. Though I hope that they continue to release new “premium” puzzles as well.

This puzzle starts off simple enough. There are 3 pieces and one box and all you have to do is get those pieces into the box so that the entryway is completely filled up. It sounds easy and looks easy, but I’ve worked on these Yamamoto packing puzzles before, so I know that I’m in for a struggle.

My first attempts involved randomly sticking pieces into the box to see if I could “get lucky” and find a solution randomly. This method lasted a few hours over the course of an afternoon and not only did I fail to make progress, but I was having trouble remembering what configuration I had tried and what I had not, so inevitably, I repeated the same failed assembly over and over.

I eventually gave up on that idea and opted for a more systematic approach. I’d start by assembling the pieces outside the box in a 3×3 cube. Then I’d search that cube for any 2×2 feature that would “fill the gap” of the box. Once I had a 3×3 structure built that satisfied my requirements, I’d then try to find a sequence to get those pieces into the box in that same configuration.

3×3 overall cube with a 2×2 section. Next step is to see if this will fit into the box.

Over and over I tried again and again and each time I failed. There are actually a whole lot of configurations that would theoretically “work” if only they’d fit into that box. But, the more I worked with the puzzle, the more I came to understand the limitations of the box. That angled top, the bottom lip, the inability for pieces to rotate inside the box – all these things existed to thwart my attempts.

Another day passed and I became even more systematic. The problem I was having is that I would come up with a 3×3 cube that I liked and whilst trying to then insert the pieces, I would lose track of the initial setup. This was frustrating as it is possible that I had the right solution, but got lost along the way and would eventually “reset” before trying all the options.

I began taking pictures to better keep track of the different configuration and I also began employing temporary stickers to keep track of the pieces. This helped, but did not result in a solution.

Another 3×3 cube, this time I’m using stickers to keep track of the pieces. Red, Blue and Yellow should be visible when it’s inside the case.

I then abandoned this method and started really thinking logically about this puzzle. Which piece goes in last? What is the likely configuration of these other pieces? How can I use the shape of the pieces and the shape of the box together? Instead of trying every option I could come up with, I decided to try to narrow things down and focus on what makes the most sense.

And just like that, I found the solution.

The genius in this design is the fact that the packed 3×3 cube has lots of missing voxels. This allows for unique pieces that can be fit together in countless arrangements. Had the pieces made a perfect 3×3 cube, there would be no mystery, there would be only 1 obvious arrangement and that would be no fun.

Overall, an excellent packing puzzle that provided the right amount of challenge. I stayed interested and determined and was rewarded within a few days time with the solution. Highly recommended if you enjoy this type of puzzle!