Getting Ziggy With It

Ziggurat

This has been written ahead of time and set to publish at my routine time. Having had some time off work, I have to pay the price by working two weekends in a row! Sob!

Whilst I am here, can I ask that you all think about the awful atrocities that are going on in Ukraine. One of our fellow puzzlers, Peter Grabarchuk, has asked that I highlight to you what is happening and request that you consider doing anything you can to help out. Either give to a charity that is helping in Ukraine or that is helping support refugees. Anything you can do will help out and ease a terrible situation. 

Back to the puzzling…

My friend Eitan has been rather busy with work and having a family over the last few years and seemed to have almost withdrawn from Puzzle design and manufacture. My other puzzles of his were the incredible Eitan's star (one of the most difficult and marvellous twisty puzzles ever mass produced) and the Master Curvy Copter which he designed and used Shapeways to 3D print for me. With some considerable surprise I saw him offer up a new design called Ziggurat, which he was 3D printing himself. The Ziggurat is a massive Mesopotamian pyramid-like structure usually with 2 to 7 stories. Eitan was going even more massive with EIGHT! How could I resist? I jumped on the offer and sent off some electronic money (not actually a lot) and got some feedback from him that the colours that I had chosen were great. I waited for the US and UK postal services to get their acts together and finally took delivery.

In the meantime, Michel van Ipenburg had written about it in his newsletter as well as pronounced on Facebook that it was a very nice fun design which was a great relief. Michel is the foremost connoiseur of the N-ary puzzle group and if he approves then it is definitely worth purchasing. 

Eitan had thoughtfully sent the puzzles out with 6 of the plates already assembled into a stack connected to a display stand and another 2 extra plates were loose in the box ready to be added to the stack. Initially, I did wonder why he had started the puzzle off for me and possibly gone halfway but then I realised that he had actually been very clever and thoughtful. The stack of 6 was definitely not ready to just start adding the other 2 to. The stack had to be completely dismantled before the reassembly with 8 was going to be possible. Having 6 ready assembled allows the puzzler to explore the sequences and understand the puzzle before embarking on the main odyssey. Once apart, the clever design of the plates and how they interact with each other across 3 layers is apparent and I was further impressed with Eitan's skills. The 2 colours have plates that are mirror images of each other.

I spent a couple of evenings on my chair watching TV working out how it worked and got ready for the full assembly - there were going to be a LOT of moves that had to be done in the right order and in the right direction.

A very interesting beginning

Hidden by the spoiler button is the initial stage for the first assembly - having to do that was completely unexpected and very nice to realise. Once I thought I had it begun, it was time to begin the arduous process of working my way through the many many moves to stack the plates tidily. Everything moves very freely and easily despite the 3D printing. I initially just worked my way through but on 3 occasions realised that at some point I had turned myself around and was heading the wrong way. In fact, the first time this happened, I only realised that I had done this when I returned to the start position...DOH! Having inadvertently back-tracked 3 times, I decided to take notes to prevent further errors and to also allow me to take a break and obey Mrs S' commands with work to do around the house. I hate to think how many extra moves that I actually ended up performing but I got there in the end:

All 8 plates locked together

Stacked! As Eitan intended

I love it! The sliding mechanism places no strain at all on the very delicate thin tongues of plastic and it is a fun puzzle to explore. It will not be something that you solve multiple times but the experimentation and assembly was a pleasant diversion and even getting lost in the path multiple times only added to the enjoyment. It is ready now to go on display in my N-ary section.

Thank you Eitan, I look forward to future designs from you now that you are back designing again.

Dig Ears Revisited

Shuai Chi’s plucky little Dig Ears.

Yet again, my good friend and PuzzleMad foreign correspondent, Mike Desilets, has sprung into the breach! I have had a week off and been away in a place with extremely poor internet access. Whilst puzzling was possible - I never go anywhere without some of my lovely toys to help me ignore Mrs S. Whack! Ouch! Sorry dear. Somehow, as he always does, he senses (does he have some form of ESP?) that I need him to fill in for me and an article arrives in time. Thank you mate, I really owe you! Over to Mike:

Aloha Kākou Puzzlers,

This shall be a very modest post. I’m trying to keep the typing fingers limber more than anything else. I also, unexpectedly, experienced some great puzzling over these past few weeks, so wanted to spread that joy. Without further into, let’s start in with a really fun new disentanglement from Shuai Chi - “Dig Ears.” (Ed - I discussed it here) It was included in Aaron Wang's last annual mega-batch of puzzles, which I insist is his best and most diverse yet. Shipping has been a challenge for many makers and purchasers this past year, no surprise to most of you, and Aaron’s box took a good several months to arrive. He remained in close contact during the whole period, however, tracking the package; it was never a serious concern. Aaron’s service is as outstanding as his puzzles. (Ed - I totally agree)

Whenever I get Aaron’s annual package, I immediately search for the one or two puzzles that are below level 10 (Ed - hahaha, me too!). As those of you in the know, know, Aaron’s disentanglements are always very challenging. I’ll just go ahead and all-caps that, VERY challenging. Aaron basically invented the 10+ category. I have yet to solve a complete batch before the next one arrives (some 12 months later). At this point I am faced with an impossible backlog. I believe this is the case for the entire PuzzleMad staff. (Ed - seeing as that is just you and me, I definitely agree!)

The insert.

Anyway, when I saw Dig ears clocking in at a manageable level 9, I knew I had a chance.  Also, no string involved, yet another plus. Three weeks and a few widely interspersed sessions later, I had the shuttle off and had also achieved repeatability. It was a great day to be alive! The old hands know what I mean. (Ed - 3 weeks? That is pretty good for this one! I think it took me 2 weeks and I am supposed to be quite good at wire puzzles)

I highly recommend dig ears to all serious puzzlers, even if disentanglements are not your thing (which seems to be quite common, unfortunately). It’s hard to express the brilliance of this modest little puzzle. Shuai has done a really great job here, and I can see why Aaron chose to make it. Like most innovative disentanglements, it takes known elements and combines them in a new way that is at first (and sometimes forever) quite baffling. In this case, you immediately recognize the classic ‘cowboy hobble’ form of the main component, but then the spiral arm is extended a full extra turn. The other dangly bit is hung off the main body with it’s two rings and finally the shuttle hangs off that. The very first move seems obvious, but the second is far less so. I would even say that it’s the main challenge of the puzzle. Once you have that licked, the third and fourth should fall into place without tremendous effort. Reassembly will be a little tricky, even if you were wise enough to pay close attention to your procedure. If I’ve learned anything at all doing this stuff, it’s to slow down and study individual moves before taking next steps. Even with this, however, there is a degree reverse-solve required; things just don’t look the same going backwards. By the end of the process, however, you should fully understand the puzzle. It’s really unlikely you will get it back together unless you do.

This is a very satisfying puzzle, and it is not impossibly hard. Just regular hard. You can (and should) THINK© your way through this one. In fact, I would say that the THINK-fiddle ratio is about perfect. My personal thanks go out to Shuai for creating this design, and also to Aaron for the flawless craftsmanship. Proportioning and tight tolerances are really critical for this kind of puzzle. It’s a stainless-steel beauty and will take an honored place in my collection.

Dig ears has inspired me to work diligently on this new batch and resist the procrastination which these really hard entailments inspire. I was well on the way to solving “cable car”, but somehow got myself all mixed up in the middle of the process. I need to gather my wits and get back at that one. But I can tell you already, for a fact, that it is a great puzzle. And also, a very handsome puzzle. It would be on my top shelf, if my house had shelves.

Cable Car. I love this one. I’ll love it even more once I solve it.

(Ed - I also bought this one - it's actually called Cableway, I was thinking that it would be a relatively straightforward N-ary type puzzle but the construction of the doubled over frame means that the expected N-ary simple moves cannot happen. At present I am completely stuck on it and still at the beginning)

Before we close, I’d like to throw a quick ‘me too’ in the direction of Allard Walker, friend of the blog, who recently posted on Join Liu’s Axes and Hammer puzzle. Kevin Sadler, occasional contributor to PuzzleMad, also gave it a very positive review in July of last year. Those gents have about covered it, so I’ll only say that I fully concur. This is truly the freshest, most interesting take on Robert Boomhower’s 1966 classic in a very long while. That’s really saying something, since it is one of the most widely copied and modified disentanglements of all time. Axes and Hammer is also extremely well-made and I have been fondling this puzzle in my front pocket (as far as you know) for days on end. (Ed - we all believe that is what you are doing in your pocket!)

Axes and Hammer from Join Liu, 2020 IPP Design Competition entrant.

Finally, I want to extend a heartfelt Thank You to Cubic Dissection for the beautiful Slideways puzzle I recently received. I was lucky enough to be the winner in their last puzzle lottery. It was a pleasant (and shocking) surprise; like my editor, I never win anything at all, not a damn thing. This little puzzle is stunning, as you would expect from Eric and his dissectors. It reminds me that I should perhaps be more diligent about tracking CD releases. To be honest though, the very thought of participating in a quarterly electronic mad scramble is stressful and off-putting. Most likely I will continue to check in late and search for table scraps. Fortunately for people like me, CD often produce multiple editions of the very best puzzles, which helps a lot.  

Slideways, among the best CoMo puzzles of all time. You can’t have too many copies. If I had to have just one, it would probably be this CD version.

(Ed - Yes I have to agree about how good a puzzle this is - I have a metal version of the plain burr and also a couple of Pelikan variants - stunning puzzles and fun to fiddle with)

Ok, that’s all I have, back over you Chief…

Wow! A nice romp through some really wonderful puzzles! If you get anywhere with Cableway then you might have to give me a hint. Thank you so much for all your efforts and I hope that you continue to enjoy your puzzling and chat with us about it soon. Take care mate!

May the Success Continue!

Ice 9 by Yuu Asaka

I may have said once or twice on this very website that I am rubbish at packing puzzles and I stick by that assertion whole-heartedly. I have accumulated quite a few packing puzzles over the years and they give me a huge headache. I have gotten much better at the 3D interlocking type puzzles from Osanori-san and Alexander-san but any puzzles that involve placing lots of pieces (especially very similar blocks in a cavity) stump me. I have only managed to solve the Euklid for Kids and still not managed the other 2 Euclid puzzles and the Fermat, with only 3 pieces but a non rectilinear geometry, have me beaten. I just don't have the skills to work them through and am reduced to trying hours and hours of random attempts which I cannot keep track of. If there is a logical approach to them I just don't know it. I am in awe of Nick Baxter who not only solves them with little difficulty but seems to be able to find extra solutions. One day I will saw the top of his head off and examine his brain! Don't tell him though or I suspect he might avoid me. To my eternal shame, I cannot even solve a one piece packing puzzle - bought from Eric back in mid 2020 - it's "just" a big block to be placed in a box...it shouldn't be that tough! Tray packing puzzles with complex shapes are also a huge problem for me - is there a technique for them? I just don't know. I have a bunch of Alexander-san's puzzles which I dip into quite frequently and so far I have only managed to solve a few of the very easiest of them:

Very pretty and very difficult!

Last week, I extolled the virtues of Yuu Asaka's tray puzzles - they tend to have low numbers of pieces and a very nice logic to them that you solve with an initial splurge of trial and error before you are forced into a period of Think©ing and actually end up working the blasted thing out properly. Every time I manage one, I am amazed at how he made me think© inside the box/tray! Yes, these are puzzles where thinking outside the box doesn't seem to work (at least not for me) and it requires you to notice something odd about the pieces before you can work it out. I love the Aha! moment with these - it is not just down to random trial and error.

The Ice 9 was included in my hoard from Mine but it really frightened me...NINE pieces to place - Aaargh! After I published last week, I took it out and began to fiddle. As always, I started with trial and error. This has a bunch of odd shaped pieces which all have various odd shaped notches or protrusions which must obviously interlink. The squarer notches can be filled by either square protrusions or rounded ones. Is this going to fit together perfectly with no gaps? In doesn't say on the box. All it says is to fit the parts in the tray and that it is level 5/5 (PuzzleMaster rate it as a 10) with the estimate that it will take about 3 hours. Last Sunday evening did not see any success and I took it to work in the hope that I might find time. We had a big educational meeting via MS Teams on Tuesday morning and this was my chance to listen to the talks AND play with my toy at the same time. I promise sincerely that I was paying attention. Initially, it was just random placement of pieces which never works for these with so many pieces to place. Time to Think© and it was hard. There always seems to be a piece left over that cannot fit in.

First I counted the notches and the protrusions and they don't equal each other - bugger! Then I looked at how many notches I could make by placing pieces side by side - it still wouldn't match. Maybe there was going to be a huge gap but estimating the surface area of the tray and the total area of the pieces told me that there was a pretty close match and no big gaps. Time to be systematic and look at the lengths of pieces and estimate where they could fit when placed in pairs. It wasn't really successful in a way that I was expecting but I did manage to fill large parts of the tray with almost no gaps at all - the unequal pairing of notches and protuberances seemed to be less of an issue this way. I seemed to be filling the tray quite well. Until the last piece would not fit. At this point, rather than tip it out and start again, I did try moving tiles around and swapping a few without mucking up the really nice tray filling that I had achieved. Gradually, the tray filled better and better until I was left with one awkward piece which looked odd.

What if I can??? Oh, you sneaky man! That is very clever and really quite tough. The Ice 9 has a very lovely Aha! moment which cannot be found randomly. It will start random, move to a definite thought process which won't work and then noticing something special.

I think I did take about the requisite 3 hours making this rather good value for money. You should definitely consider getting one or two of these challenges! Maybe it is time for me to pick up Alexander's puzzles again?

You Cannot Rush A Good Puzzle

Or...Failure Again!

Swiss Cheese and Grape

A couple of weeks ago I showed of Bruno's Caffe Latte packing puzzle and have to say that despite it being a packing puzzle, I absolutely adored the process of solving it (I hope that all of you have gone out and bought your copy?) He had sent me his Swiss Cheese and Grape puzzle as well which was really admired by the very discerning Michel and I just needed to find time to play. I had actually expected to have some time this week but something went badly wrong. My week rapidly filled up with work and my puzzling time disappeared. I even failed to attend the virtual MPP yesterday due to work (bloody virus!!!) and the last puzzling opportunity passed by.

I decided to give it a go this morning and early afternoon in the hope that I would have a tale of rapid success for you today. How foolish am I? 

The standard maze plates

The premise of this wonderful design is to place your 6 cheese slices into the frame in such a way as to allow the holes that run through will allow the ball bearing/grape to drop all the way through from one face to the other and out. I am not sure where this falls in the puzzle classification - I wonder if it straddles two classifications? It is certainly a Maze but this is one where the maze has to be created by the puzzler.

The slices have the letters from the words "SWISS CHEESE" spread across them. Each slice has multiple holes...some blind ending and at least 3 passing obliquely through to the other side. Therefore it is a simple matter of stacking them so that the exit hole of one matches up with an entry hole of the next and so on. Easy peasy? Sigh! Maybe for Michel (or you) but definitely not for me. I really thought that an hour or so experimenting would get me to the end and a success story. Alas in answer to my question above...I am VERY foolish - or really really dense!

Creating stacks of 3 or even 4 of these slices is pretty easy. It just needs a bit of fiddling about and this works - the grape slides through with a very satisfying rattle (I am not sure grapes should be that hard). Adding a 5th slice is a bit problematic...quite often none of the 2 remaining slices have holes that will line up with either entry or exit holes at each end. There are 4 orientations to try with each slice and when it doesn't work (which is often the case), it is time to start trying to interleave those remaining two slices between the ones that I had already assembled. This usually mucked the whole thing up and led to me starting afresh. My maths abilities are not great but I think that if I just try random picking of slices and orienting them randomly one after another then there are 96,909,120 different possibilities. Maybe one of you mathematicians could correct me if you think that I am wrong (it has been a VERY long time since I studied Combinatoric theory). Whatever the true number is, I am highly unlikely to find the solution by randomly picking pieces and placing them. It needs the old Think© trick - nooooo!

The Thinking© was where I fell down. I realised quite early that 2 of the slices have one side that does not line up well with the other pieces - I need to improve my odds first by positioning these two and then later working on the more freely placeable slices. Even with the letters on them, I struggled to keep track of what I was trying in my head and began to take some notes on a piece of paper. After an hour or so, my notes were completely incomprehensible to anyone and I had quite a headache brewing. Wow! this is one tough puzzle! 

I have spent a good 3 hours on this today and so far gotten absolutely nowhere! Maybe I am rushing it to try and get a blog post? All this has shown me is the title of the post - "You Cannot Rush a Good Puzzle". I will continue working on this one and hopefully get some time to solve it during the week.

Window Lock

Window Lock by Dick Hensel

Unfortunately I am working this weekend and so only have time for a quickie - it's still a goodie though! Who would have thought that you can make a lock out of wood? I certainly wood not have thought it possible but then what wood I know? Even more interesting is when the entire workings of the lock are visible through an acrylic Window. Allard reviewed the Window lock back in November and I couldn't resist asking Dick if he was going to make any more. He said that he was thinking about it and wood let me know if he did. I was truly delighted when he contacted me at the end of January with an offer of a copy. My version was made from a different wood to Allard's and had an extra feature...the ball bearing which, I suspect, made one part of the solution a little easier to perform.

As the name states, everything is on show and yet it is not just a simple matter of looking and doing to open it. I have been fiddling for a week or so before I managed the complete solution. The first possible movement is relatively obvious because all you can do at first is roll the BB around (which does nothing) and look for anything else that might move. Once you have found what else moves then your vistas open up into a bit more confusion. Yep, movement happens and immediately there is something that screams to be done but due to the fancy angles Dick has cut the wood at, everything just slides back and forth without achieving anything. It's a sort of mesmerising sliding back and forth but that doesn't help you open the blasted lock. 

Next, there is something else that screams at you to try and it requires more dexterity before you can make it happen (and sometimes I couldn't make it happen). At this point there is an audible oooooh! in the room (Mrs S doesn't mind those sorts of sounds) and more things become apparent. There are magnets inside - knowledge of which actually doesn't help you and even if you are not careful can seriously hinder later moves. At this point, I got stuck for a week...I could make another "thing" happen inside and it was very satisfying but did not appear to get me anywhere near to opening the "blasted" lock. I was beginning to understand why Allard had enjoyed it, The next couple of evenings were a succession of failing and succeeding to do the first move or two and then "click" swearing under my breath. I was missing something crucial.

As they say, it was now time to Think© and it didn't help. With the Window lock, it was time to Look and then Think©. A very foreign idea for me but it certainly worked - as I have said, everything is on show if you look properly then there is more to Think© about and at that point I had an idea...what if I?

Bingo!!

Damn! That should not have been so hard!

This clever puzzle literally has everything on show through a window but seeing it is not enough - you need to think and plan an attack. It actually is not that tough but the moves are not obvious until you try to work out a pathway to releasing the shackle. I absolutely love it! I really wish that I was able to open my other lock from Dick. I bought the Hensel Lock in 2017 and have not gotten any further than a few moves in! I am truly terrible at locks/burrs/packing/puzzles in general!

Whilst chatting with a new friend on FB messenger, I came to the realisation that I have a problem...I haven't tidied up my desk in 6 months! I actually know where everything is but Mrs S is starting (actually she's continuing) to get annoyed at me! Do you think I should tidy up? I actually think I could leave it a while longer:

Looks organised to me! 

How Hard Is It to Get a Cup of Coffee?

It would appear to be bloody awkward!

Caffe Latte puzzle by Bruno

I have been chatting on and off for several months with a lovely Parisian puzzle designer, maker and seller, Bruno Hemon. This has probably been a rather frustrating experience for him as my communication ability over the last couple of years has been rather hit and miss due to my rather high and extremely unpredictable workload. A few years ago he wanted me to give my opinion on a couple of his designs and I ended up pointing him at my expert friend Michel to get a really decent assessment of his puzzles. Michel writes a regular newsletter and gives his quick assessments of puzzles that he has bought each month. I was very pleased to see that a couple of Bruno's designs featured in them and was really delighted to see that Michel had put one of Bruno's designs in his top 3 acquisitions of 2021 - for a puzzler and collector of Michel's standing, this is a huge tribute to both quality and puzzle standard.

The very prolonged conversation ended with Bruno telling me that he was sending a couple of puzzles as a gift to evaluate. I was a little mystified when I received a notification of a German parcel being sent to me and could not understand why this could be or who it could be from. Mrs S clarified it for me earlier this week when she kindly opened the package for me to find out who had sent me something. Nicely packed with a little card was the Caffe Latte puzzle (complete with sugar cube) as well as the Swiss cheese and grape puzzle which I have yet to explore. He has quite a few other puzzles on his site and I will probably head back there to make a couple of purchases when my finances settle a little. I couldn't resist the Caffe latte as my first challenge. I loved the shape and idea as it reminds me a lot of the type of packing puzzles that I adore designed by Alexander Magyarics - it's a simple idea made difficult by having a very restricted entry hole. The addition of the sugar cube which may end up mobile within the puzzle is a nice extra touch. Having a cylindrical shape was also going to make it more difficult due to the fact that pieces could swivel around the central axis.

Whilst waiting for a critical care bed before a big operation would be allowed to start, I was going to have a little while with nothing to do but be bored twiddling my thumbs. I am NEVER bored! I always have lots of toys with me, either to confound my colleagues or, more usually, to solve for the weekend blog post. Out came Caffe latte. 

The usual approach is to assemble the shape outside and then work out how to place it through the restricted opening...a third stage here will be to do the whole thing with the sugar cube in place. As part of my being rubbish at packing puzzles, I start of trying lots and lots of random ways of assembling pieces. This usually gets me absolutely nowhere and I have to actually Think©!  Yes, it happened again. After a good 30 minutes amusing my colleagues with my choice of swear words, I stopped and thunk about it. The shape consists of centres with both inner and outer rings all split into quarters. Two of the pieces straddle 3 layers which is an added problem. Aha! number one, lets me work out a way to assemble the pieces into a full coffee shape (there is a nice gap inside for the sugar cube which I will work on later). Whilst the outside of the cup is conical, the interior is just a cylinder so there will be two possible ways up. Needless to say, I start working on the wrong orientation and have to stop to start my big case...pesky patients always getting in the way of a good puzzling streak!

At home later that day, I work out how to disassemble the shape through a limited entry and decide it's time to put it all together. Problem number 2...2 of the pieces will not fit through the hole in the top at all! I am not sure how this wasn't immediately obvious to me from the beginning but I now have to work out how to get these quite large pieces inside without snapping them. Each needs a rather accurate rotation to place it and once one is inside then the other gets tougher too (especially if you place some of the smaller pieces in first). I finally work out how to get these pieces inside and realise that I cannot remember the assembly. Sigh! I'm a bear of very little brain! Time to remove everything - a real struggle to do and then take notes on each required move. One of the most interesting features of this challenge is that the whole of the assembly needs to rotate inside the cup to align pieces to accept and move subsequent pieces. This puzzle probably cannot be modelled in burrtools for this reason.

Next, using my notes and working everything in reverse, it's assembly time. This needs bit of dexterity and a bit more swearing. After 2 days, it is assembled but without the sugar cube. Time to start again. Another batch of swearing and I restart the puzzle with the extra piece and realise that it gets in the way a bit. A very specific couple of moves are required and these are even more fiddly but the end result is a perfectly sweetened Caffe Latte ready for a photo and a drink:

What a wonderful challenge!

Disassembly is also a challenge once you have left it a while because the view inside is extremely restricted.

Bruno has outdone himself - this is a fun challenge and is definitely worth you all having a look at. Whilst you are on his site, there are quite a few other challenges - a similar type of puzzle, the Espresso coffee and Michel's winner, the Hexabox. I will be going back soon!

No Need to Fear It!

Progressive Exploration Helps a Solve

Master Clover Cube - looks ferociously tough

Halfway through last year I restarted purchasing twisty puzzles after a little hiatus (mostly induced by fear of how difficult the newer puzzles looked). This batch I worked through gradually over a few weeks and published about them here and here but the Master Clover cube caused me considerable anxiety...as an edge turner it is going to jumble and to shape-shift which is normally a fun challenge but with so many layers, this was potentially going to be painful. If you are not familiar with the concept then let me quickly explain. Normally with edge turning puzzles, the individual pieces are restricted in their positions to certain orbits and cannot leave them. However, a jumbling move occurs when a partial turn occurs of an edge which lines up the cuts enough to allow an adjacent edge to be rotated. This can cause shape-shifting if it isn't lined up with the opposite side or "just" take pieces out of their usual orbits. Part of the attraction to me with these edge turning puzzles is that there are two distinct solves to be done - a non-jumbled scramble can be mostly solved using an entirely intuitive approach without any fancy algorithms and just a bit/a lot of thought and planning - this is great fun usually. Then a jumbling scramble makes for a much tougher solve needing even more thought and often needs a more fancy algorithm or commutator to solve (and half the fun is working out these commutators). It also ends up with a hugely shape-shifted nightmare puzzle.

Inner edge turn and outer edge turn

A jumbling turn in process (outer edge)

I had put off the final one in that batch until just this week. It frightened me to death! I recalled that many years (2013) ago I had bought and eventually solved the big brother of the Master Clover Cube, Eitan's Master Curvy Copter and the process it had nearly killed me. It was a seriously difficult puzzle with a lot of shapeshifting and a hugely difficult set of commutators to find.

Are they subtly different? Both Master edge turners but a lot more pieces in the Curvy copter

Eventually after procrastinating a long time, I ended up discussing the puzzle with Derek who happened to be working on it at the same time. My fears seemed to fall on deaf ears and, as usual, he started to badger me to get on with it and eventually I succumbed when he practically screamed "DO IT" at me via FB messenger. This shamed me into at least trying a non jumbling scramble in the hope that it should be solvable by intuition:

"This should be fun", I thought/hoped and my initial approach was similar to how I solve the ordinary Curvy copter or Clover cube. 

I basically do it layer by layer working my way up from the white face. The petals in the Master clover cube are split up so it was just a matter of creating the white face (easy) and then assembling the 2 side faces of the corner pieces and then adding in the half petals. With delight I noticed that the centres and the corners are not separable so solving one solves the other. It can be a little arduous but I managed to get half of the puzzle solved really quite easily. I was on a roll and then I hit a problem - the half petals in the remaining half are much harder to pair up when there is very little room to play in. One of the most important things I realised was that doing the puzzle layer by layer always ends up with a scenario where there are single half petals that cannot be placed in the end game without doing jumbling moves to finish. I was ever so slightly disappointed in this but I should probably not have been surprised. It was always going to be unlikely that such a complex puzzle was going to end up with nice easy intuitive 3 cycles of pieces. Having solved the lower half, I was able to turn the puzzle back to that orientation and experiment with the jumbling moves to see what effect they have. In a normal Curvy copter, the double jumble swaps a the two opposite petals on adjacent faces as well as either side of the cube. This can occur here but it is possible to split the inner and outer edge jumbles as below:

A single jumble swap

Two jumble swaps

Four jumble swaps on both layers

As you can see that matching inner edges with the front outer edge swaps 4 petal pieces. Doing it twice swaps another 4 and then twice more leaves in a very nice scenario (pictured right). Could I use this? Oh yes, I was sure I had the puzzle beat...and then this happened:

Hell! Not enough pieces swapped!

I was stumped for ages. I tried every combination of jumbling that I could think of and was always left with 2 pairs of swapped petal pieces. Time to Think© - Ouch! that hurt. I eventually realised that I needed to swap 2 more pairs at the same time but not alter the faces. Think© you fool! Aha! A lovely moment happened when I realised that I could move petals from the bottom face onto each side and if they were swapped over in a double set of jumbling moves then there was no mixing up of something else that I didn't want mixed. YES! I had it solved layer by layer.

Reporting my success and struggle back to Derek, he replied that he had not had anywhere near so much trouble as me with a non-jumbled scramble. ???How is that possible? It transpired that he had reduced it to a standard Curvy copter first and this could be done without any jumbling moves at all. I had to have a try and yes this was also a LOT of fun. So many aspects to just one twisty puzzle. At this point we were both procrastinating...he said that he had not had time to do a full jumbled and shape-shifted scramble but practically shouted at me to get on with it! Gulp! I am, of course, too stupid to say no to an instruction like that so off I went. I note that Derek has still not fully scrambled his copy! 

First of all, I did a jumbled but not shape shifted scramble and at this point I was very pleased that I had done my earlier experiments and gained a lot of experience of what could be moved where - the solve took me a couple of hours of enjoyable fun. Then it was time to screw my courage to the sticking place and do it properly:

This might have been a very bad idea!

The shape-shifting does seem to get blocked at various points during the scramble. It is mostly internal and does feel like it could be pushed past. But my experience with the original Curvy copter plus warned me off forcing anything. Everything I had learned about the puzzle up to that point stood me in good stead. Returning to cube was no more than awkward and then it was just a fully jumbled solve. I love this puzzle! It is definitely less difficult than the Master curvy copter but in a way that is a good thing. The vast majority of this can be solved by intuition alone and then just a bit of experimentation using the already solved half will provide what you need to be able to complete it. There are several challenges (non-jumbled, reduction approach; non-jumbled, layer by layer, jumbled non-shape shifted and finally fully scrambled) - this is great value for money. I bought mine from the HKNowstore but for those of you in America/Canada then PuzzleMaster have it in stock as well. Go on, give it a try, you will love it!

There are a couple of other non-face-turning Master cubes that would be great if those wonderful cube producers would have a try at manufacturing: The Master Curvy Copter I have shown and the Master Rex Cube as well would be incredible:

3 Master cubes - hopefully the back two will be mass-produced

Something Magnificent from Pelikan

The latest challenges from Pelikan are as gorgeous as ever!

Last week a delivery from the Czech Republic arrived much to my delight and much to the disgust of Mrs S! I haven't put anything away in my study in months and months - there are puzzles everywhere in my study. She says it is a terrible mess and I call it organised chaos - I know where everything is and it is a bit of a mess but I haven't really had much time for tidying up, All I seem to do is work and eat and sleep really really badly. She sort of agrees with that which is why I am not being murdered in my sleep or actually even being nagged about it very much. When it comes down to it, Mrs S is a keeper (after over 27 years of being married I should sort of hope so!)

I was a little surprised that there was going to be a new Pelikan release so soon. These things are always hellishly complex and more recently with non-rectilinear shapes must be pretty tough to manufacture to such incredible tolerances. Yet here we are just 6 weeks since the last batch and we have some more beauties for me to review as quickly as I possibly can and for you to buy (Friday Feb 4th 10am CET, 9am GMT, 4am EST, 1am PST). I have worked as quickly as I possibly can to solve as many as possible to show to you with an opinion.

Victoria 

Victoria by Christoph Lohe (in Wenge)

Much to my amazement and pleasure, Jakub and Jaroslav have been venturing out over the last few years into non-rectilinear grids and it’s not surprising to see them venture into the amazing realm of puzzles inspired by the Star puzzle that Stewart Coffin has taken so far with extensions to the shapes whilst retaining the familiar interlocking mechanism. These puzzles need incredible accuracy to construct and have some very odd angles involved. I had been informed by Christoph that he has been experimenting with this grid for a while and had come up with something new. When it arrived I was amazed at the beauty of the puzzle and how well it has been constructed. It is very easy for puzzles like these to have small gaps here and there but this one from Pelikan is absolutely perfect. Having solved quite a few of this type of puzzle before, I knew how the basic approach to dismantling it and once I’d found the separation axis and direction I quickly had my six pieces. 

Perfect cuts - 6 identical pieces

I was surprised to see that all 6 were identical and am even more surprised that Mr Coffin had never found and published this shape. I had taken it apart pretty quickly and scrambled the pieces and deliberately not paid attention to the orientation. Reassembly was a lovely fun challenge that requires a little planning (especially fun if you’ve never seen one of these before) and a fair bit of dexterity. Be careful… those corners are sharp. This is a wonderful new design from Christoph and it is great to see him branching into different geometries. As always Pelikan has made masterful job of the woodwork.

Seven woods

Seven woods by Stewart Coffin

This is another puzzle by the master himself, Stewart Coffin, and is one that I’ve heard of but never actually seen before. It is another of his fabulous designs similar to the classic star puzzle. These are notoriously difficult to make well and accurately. Needless to say, Pelikan have made them absolutely perfectly. This is a gorgeous mix of beautiful woods with no gaps where there shouldn’t be. Despite having been around in the puzzling world, I have never actually seen this puzzle before and certainly not played with one. I spent almost an hour searching for the correct place and orientation where it slides apart - it is rather like one of the Pennyhedron puzzles in that if you don’t put your fingers in just the right place and try to move in exactly the right direction then it ain’t coming apart. At one point I started the move and was called by Mrs S to do something so slid it back together and when I returned to it, I couldn't find the correct way to slide the pieces again. Eventually I was further astounded at just how smooth the movement was - the tolerances are absolutely spot on - this is almost held together by what seems like suction. Once it has been dismantled be careful, the points on the pieces are very…erm… pointy. Stabbing yourself is not fun. It is not difficult to work out how the puzzle is reassembled but care has to be taken to line up the points properly or it won’t go (it has to be mm perfect) and also avoid hurting yourself (I swore having stabbed myself quite a few times much to the amusement of the cat on my lap and the wife next to me). 

6 pieces

This is what happens if you don't pay attention

My first reassembly ended up with 2 faces not correctly matched (which does look lovely) and I had to do it again with more stabbing - great fun…ouch! 

Pedals

Pedals by Alexander Magyarics in Ash and Jatoba

The packed delivery arrangement is lovely

Yet another wonderful 3D packing puzzle from Alexander Magyarics - there seems to be no end to the extent of his talents. It has been beautifully made by Pelikan as always. In this one (named for the shape of the top of the box), there are just 3 pretty complex pieces made out of only 17 Voxels. This means there will be quite a lot of empty space inside. Is that helpful? Not to me it wasn't! It actually makes it quite a bit harder as a challenge because there are many more ways to assemble the pieces into a 3x3x3 shape but finding ones that cover the 6 holes in the top of the box is a fun challenge which is made much tougher when you suddenly realise that the complexity of the pieces significantly restricts the way they can be inserted into the box. They are all quite long as well which means they block each other during manoeuvres. I have to admit that I’m always going to rate these highly - I adore them. This one has just the right challenge level for me. It took me most of an evening to find the right assembly and work out how to insert it.

Very clever solution

After triumphantly showing it off to Mrs S and then watching some TV with her, I was slightly horrified when I found that I was completely unable to dismantle it. Interestingly, the visibility inside is quite limited and I couldn’t see well enough to work out what to move where. It took me about half an hour to take it apart! Absolutely Brilliant!

Hummingbird

Hummingbird by Osanori Yamamoto in Bubinga and Garapa

Osanori Yamamoto has done it yet again with a stunning 3 layer design containing 4 identical looking branched pieces that interlock on a frame. As always the aim is to remove the pieces either using linear or rotational moves. This is made into a real challenge by the sheer accuracy and incredibly tight tolerances that Pelikan has built into this creation. The moves are very restricted by the shapes and the way they get in the way of each other. There is no bevelling to make things easier so everything has to be lined up correctly and there are no cheeky shortcuts. After a nice fun exploration, it took me a little while to find the right path and with a nice smile worked out which pieces needed to be rotated and which just linear moves.

Just look at the accuracy of those pieces!

Having taken the pieces out and scrambled them it became a seriously tough challenge to reassemble it. To my shame it took me a couple of evenings - a brilliant challenge by Osanori-San.

Euklid V2

It is gorgeous even if I will never manage to solve it!

Yes, it’s another packing puzzle by Dr Volker Latussek and it’s a brilliant one. Volker emailed me to tell me that it was coming my way and to say "that I won’t like it". But I have to say that he is most definitely wrong - I always love his designs even if I cannot solve them. The original Euklid (made with all the blocks in one wood type) was a hugely tough puzzle that I only ever managed to solve with a little help. Then along came the second in the series, Euklid for Kids (only 3 blocks to pack) was one that I did actually manage to complete by myself. To Volker's horror, it was eventually revealed that V1 of Euklid had more than 20 solutions (I only ever found the one with help) and in response he designed the third, Euklid for Nick, (made with 2 types of wood for 2 types of block) which I am rather ashamed still lies unsolved. This was a success for Volker but he couldn't leave the series with the faulty puzzle and so has has redesigned a Euklid version 2 so that it only has one solution (hopefully). He specified that Pelikan make this from 7 different hardwoods and I have to say that it is simply stunning! I cannot remember the original solution and don’t know whether it has changed. As Volker predicted, I have so far not been able to solve it. I know there will be some lovely rotations and quite possibly some will be coordinate moves. Having taken all the blocks out of the box (with some difficulty) for my photo, I am ever so slightly chagrined that I cannot even return it to the delivery packing position. I hope to solve it one day but it will look great on the shelf until I do. I eagerly wait word from the master (Nick Baxter) of news on the number of solutions. I hope for Volker's sake that there will only be one!

Jakub’s Cube

Jakub's cube by Alfons Eyckmans

Alfons Eyckmans is one of the best designers (and craftsmen) of burrs and interlocking puzzles in the world! Over the years, I have collected many many puzzles from him (I daren't admit how many to Mrs S) and absolutely love them. Over the last few years he has been designing beautiful cubes made from interlocking burr pieces as opposed to classical burrs. Some of them I have even managed to solve! The process always involves a wonderful period of exploration and fun - I adore these puzzles! They are fun to play with and look incredible on the display shelves. Many of these beautiful cubes have been named for or by well known members of the puzzle community. Michel has named a few after his family, I have named some after my Burmese cats and one of the best of them was named for Pelikan’s own Jakub. Alfons made me a copy early last year and I’ve never managed to solve it despite several weeks of attempts (I must be missing a hidden move). 

Identical cubes - one from Alfons and one from Pelikan - both gorgeous

Alfons never expected it to be produced in any significant numbers because the pieces are incredibly difficult puzzle to make - he was absolutely delighted to see Pelikan create their absolutely stunning version. To be perfectly honest I don’t think I’ve ever seen anything so beautiful from anyone! I have not had time to play with this one yet (apart from the several weeks spent on the original) but have found all the moves available to me to be extremely smooth. There will only be 35 of these made and it is extremely unlikely it will ever be produced again. Get this whilst you can even if it is just for display purposes! At some point I need to get all the cubes together and take a photo of them all in one place.

Belopo

Belopo by Alfons Eyckmans in Wenge and Zebrano

This stunning burr made from Zebrano and Wenge is another design by Alfons Eyckmans. I have to admit that I was really quite frightened to attempt it…I have a few mixed board and stick burrs from Alfons and a couple are trapped in a position that I cannot get out of. The movements can get very complex and a simple man like me easily gets confused/lost. This puzzle is a 6 piece burr trapped in a frame - only later on did I realise that the frame is not what I thought it was - surprisingly, the frame is actually constructed from 12 identical very simple burr sticks. Movements of the pieces are smooth as silk and there are only a few blind ends. I needn’t have been frightened as this particular design is very logical to explore and reveals its secrets without getting lost too easily. It remains stably assembled for quite some time allowing careful removal of individual pieces and keeping track. I was able to keep it together as an ordered puzzle right to the very end.

6 burr sticks and 12 frame pieces

I should have been able to reassemble it had I not had a cat move and scramble my careful organised pile of pieces in my lap and chair. Creating a Burrtools file will be a real pleasure for this one. 

Which are my favourites? It is difficult so difficult to choose. For me, the pick of the bunch has got to be the incredibly complex and gorgeous Jakub's cube (even if I will never manage to dismantle it without Burrtools). My next favourite is the Pedals by Alexander as I just love the supposedly simple nature of a 3x3x3 packing puzzle which is made so much more difficult by having the extra constraints of the restricted entry. Belopo is fabulous as a variant on the 6 piece burrs which I adore. The star puzzle variants are stunning and beautifully made even if not terribly tough to work out. You, of course, should buy them all when they come up for sale soon.