Showing posts with label Aleksandr Leontev. Show all posts
Showing posts with label Aleksandr Leontev. Show all posts

Sunday, 7 February 2021

Aleksandr Terned My Head...Again!

Ternary Pin Burr
My Russian friend Aleksandr Leontev is another king of the N-ary puzzle (alongside Namick Salakhov) and when he emails offering toys my brain just starts to dribble and I immediately hand over cash. You see, I just love N-ary puzzles - some might say that they aren't really puzzles but I argue that if you need to explore a sequence to discover a logical sequence of moves then that is the very definition of a puzzle. Plus if one of the best puzzlers in the world, Goetz Schwandtner, collects them, solves them, writes about them and catalogues them, then they are certainly going to be good enough for me.

Ternary burrs
Initially I had just been wanting to add to my collection of Ternary burrs - above is Eric Fuller's reproduction of the Ternary burr (designed by Goh Pit Khiam and originally made by Brian Young) and alongside it is the wonderful extension to it "designed" and made by my genius friend Derek Bosch. Whilst I always prefer wood, there is definitely something special about the plastic ones too. This little collection got me thinking about other puzzles I had that may belong with them - how many Ternary puzzles in my collection? I found quite a few with the help of Goetz' site and even managed to find a good few of them (there are a few missing in action because I have them stuffed into chests of drawers and not on display).

As many Ternary puzzles as I could find
After placing my order with Aleksandr, it only took a week for it to arrive and then it sat around whilst Mrs S quarantined it in the porch and then I needed to find time to play. Yesterday I was forced to write our on call rotas a week early because I'm an eejit and put myself down to work next weekend when I would normally have written it. Luckily catching everyone by surprise with an early rota meant I had less requests to contend with and it took quite a lot less time than usual. I was therefore able to play afterwards and only fell asleep once during my playtime.

Grooves give a hint
First few moves
According to Puzzlewillbeplayed, the N-ary sequence for the Ternary pin burr is 162 moves long which, by the standards of Aleksandr's previous puzzles, really quite short and very pleasant. In just a few minutes I had the sequence worked out and completed with a piece falling onto a cat's head (he barely noticed - another advantage of plastic puzzles):

161 moves done
N-ary pieces removed
At this point I had a little blow to the head! It occured to me rather stupidly to try and look inside. This didn't end well as the pieces move against each other very smoothly and easily under gravity alone. I turned it out of the horizontal orientation and peered inside just in time to watch several pieces drop out onto the cat (who began to pay attention). I desperately tried to prevent them from falling out and dislodged several more and it became very unstable and collapsed in a heap on the cat who ran off my lap with rather sharp claws - OUCH (but no Whack!) scattering pieces everywhere. Oh boy! Now I had a REAL puzzle on my hands:

What was I thinking?

Ternary burr pieces
With the previous Ternary burrs I was able to dismantle them slowly and organise the pieces and learn the (dis)assembly method but here I just had a whole bunch of bits and only the vaguest idea of what goes where. First of all I had to separate them into types and take a photo - then it was going to be time to Think© which may hurt quite a lot! 

Mrs S told me I had to stop last night and then it was time for bed and then it was time for breakfast and blog post writing - this puzzle currently sits on the Kitchen granite nicely ordered and taunting me - can I put it back together? I am sure I can do it if I enter all the pieces into Burrtools but am not so sure if I try and use my very small tired brain! I'll give it a go and report back next week:

It may stay like this for a while...unless the cats get to it first...
It may end up partially under the fridge!
This was my first puzzle acquisition of 2021 - if this continues then I'm hoping for a VERY good year!

I have finally received my second dose of the Pfizer/BioNTech vaccine and am hopeful that this will allow me to be a bit safer and certainly prevent me from reinfecting Mrs S as I did in June. She was not impressed with the size of my viral load!

Stay safe guys - it's improving out there but nowhere near what we need to allow us to relax our vigilance.


Sunday, 22 September 2019

I Needed Some Zen Puzzling!

Quadrupled Quadlooplet
Life at PuzzleMad HQ has been pretty stressful the last few weeks! There has been some hard (and occasionally quite sad and harrowing) work at the hospital which has kept my mind from any decent concentration when at home. Plus some general life and health stuff at home has also led to a general inability to work on any puzzles. What I needed was to regain my Zen focus. I don't mean that I should go and read my friend Ken Irvine's blog (which I do religiously)...I needed to do something requiring focus and a certain degree of repetitive movement to help achieve me achieve an inner balance again. I decided it was time for a bit of a focus on N-ary puzzles again!

The first one that I began to work on was from my Azerbaijani friend, Namick Salakhov. Last year (2018) he had 2 entries in the IPP puzzle design competition and I had already bought and solved the amazingly complex Loopy Lattice puzzle and had asked for a copy of his other entry that year. These puzzles are terribly difficult to make and hence the wait can be prolonged. It arrived a month ago - I was surprised by the enormous beauty of it. Called the Quadrupled Quadlooplet puzzle, there are 2 challenges:
  1. Start with the looped rope threaded through adjacent holes of the core plate. Release the rope, and then return it to the starting position.
  2. Start with the looped rope threaded through opposite holes of the core plate. Release the rope, and then return it to the starting position.
If you get stuck or tangled then Namick has included a quick-release link within the string loop which I am ashamed to say that I did use a couple of times. It looks absolutely horrendous but luckily for me, it is quite intuitive and a positive pleasure to work out and I quickly achieved my required trance-like state of puzzle-solving! Very therapeutic.

Phew! That was fun. 
The disassembly was fun but did not lead to a full understanding as I discovered when trying to put it back together. I think that Zachary understood it before me - at least he realised that chewing on the string was very satisfying and had I not snatched it away quickly may have lead to an unsolvable puzzle and kebab shits!

He's studying hard!
After 4 or 5 days of experimentation I think I had the puzzle understood and could move back and forth between end states:

String through two opposite holes.
As usual, Namick has designed something captivating and confusing at the same time but definitely solvable with just a little concentration and help from a cat. His workmanship in this very unique material is wonderful and I look forward to the opportunity to obtain more in the future. 

So far my fevered mind has achieved a very small boost from my first N-ary puzzle. I was still far from soothed and not yet able to concentrate on some of the very complex new puzzles I have received over the last few weeks and months (most of the TICs remain unsolved)! I still needed more relaxation. Next N-ary puzzle to be played with was the White Bow Tie made from 3D printed plastic by Aleksandr Leontev:

White Bow Tie
This version is the smaller version of a puzzle (Black Bow Tie) that I spied in Allard's possession at the recent MPP. This lovely object is a rotational version of the Kugellager. The large one was determined by Goetz to be a 9-ary Kugellager requiring 13,122 moves for disassembly. The one I had bought was a dual puzzle - a ternary and a quinary Kugellager requiring 170 and 1251 moves respectively. I was not sure how it had been made as both possibilities and so I set to find out. There is a lovely sequence of moves to be discovered and of course, it had been supplied to me in the quinary assembly. The interesting feature of the quinary puzzle is how the logical sequence that is apparent at the beginning changes over to another sequence partway through and does it again at least another 2 times. This became quite confusing and caused me to get lost on several occasions putting my move count considerably above the proposed 1251. I discovered that this is not a puzzle to work on when one is sleepy as the zen aspect leads to automatic movements and dozing off and then getting inadvertently backtracked whilst dazed. Having woken back up, I discovered my mistake and continued in the correct direction until I had my 5 pieces and could see how the ternary version could be possible:

Even more brain soothing done here!
A game of 2 halves - the Ternary version is flipped
The ternary assembly is achieved by flipping the ring and assembling from the opposite direction - very ingenious. My savage brow was soothed even more by the 170 moves in the opposite direction! I really couldn't face all 1251 moves in reverse!

Next up was a puzzle that I had initially thought was a disentanglement puzzle but it turns out is actually also N-ary, the Chinese Soft Ring! I can never resist buying any of Aaron Wang's amazing wire and string puzzles even if I struggle to solve many of them - they are all beautifully made and a pleasure to play with. I have one of Aaron's puzzles with me pretty much at all times.

Chinese Soft Ring produced by Aaron Wang
The puzzle is supplied as above with a 3 loop assembly on 2 end rings - needless to say - the string does NOT fit through the little gaps in the rings. There are also 2 more rings and 4 more loops and a sheet of paper with a number of challenges. At the IPP design competition, it was supplied in the 3 loop version.

I am rather ashamed to say that this took me several weeks to understand even vaguely understand how this worked. I honestly thought that it was a simple disentanglement puzzle and set about trying to undo the provided version. I got absolutely nowhere. After a couple of weeks, Michel van Ipenburg shamed me by describing that he had solved it fairly easily and I joined a couple of other people who had failed. In the end, this appears to be a binary puzzle (according to Goetz) and at this point, I had an idea. Maybe I should keep the triple assembled as a reference and try and make a simple one or two with the other loops? It required a little thought© but I managed something easy in an evening of TV (I was supposed to be watching the TV series "Chernobyl" but it was so frightening that I was pleased to be looking elsewhere).

Easy peasy!
OK! I might be understanding
I think I am getting there.
I had quite a bit of help from my own string expert and managed to get up to 6 loops:

Zachary is very good with string!
I said on Facebook that I was thinking of stopping there as it had been quite difficult to get to that point in terms of concentration and dexterity. Unfortunately, the puzzle-solving machine that is Louis Coolen took offence at me being a wimp and taunted me with a photo of his own success. Zachary looked me in the eye and told me in no uncertain terms that we were GOING to do this! The following evening I set to and after only a couple of knots and having to backtrack, I had my Chinese soft ring seven loop set:

Man! That is a really unusual puzzle and very enjoyable to work out!
I even achieved a zen state during it once I had understood what was required.
If you like disentanglement puzzles and are interested in N-ary puzzles then you really cannot beat this as both types in one. Multiple challenges make it even more value for money. I still need to work on the further challenges at some point but I sort of got sidetracked yet again...

Vertical by Aleksandr Leontev
I had been putting this one off for a while because of the sheer number of moves required. However, my mental turmoil demanded yet more soothing repetitive motion. The Vertical puzzle is based on Goh Pit Khiam's Num Lock puzzle but set in a cylindrical frame to be compact. The original was Ternary and I think that this version is too. I discussed a beautiful multiple base version of this made by my Woodmaster friend in South Africa, Johan Heyns but I could not resist a new version. This puzzle is supposed to require 14,999 moves to dismantle.

Tongue poking out!
I started work one evening trying to find the sequence. After about 20 minutes of experimentation, I was on my way and gradually settled into a wonderful rhythmic sequence of moves which I could do whilst watching the TV or otherwise sitting with a blank head! Mrs S did comment on several occasions that my expression during the solve of this puzzle was rather like that of my puzzling guru, Zebedee. We both often sit there with our tongues hanging out having no brain power left over to be able to retract it into our mouths!

At times I was able to solve this one at about 1-2 moves per second but had to rest periodically because my tongue was drying out the most moved piece was actually causing me to develop a callus on my finger which was really quite painful. The puzzle was a mammoth effort spread over 4 evenings. Finally, this morning, I had this just in time for this blog post!

OMG! The effort!
Unfortunately, there is no shortcut to the reassembly! My zen state will need to be re-instated to put it back to the beginning! Lord help me!

I do hope that all this zen-puzzling has helped my fevered mind recover a bit so that I can begin to solve some other puzzles soon - only time will tell.

If you are intrigued by the idea of a lovely N-ary wooden and acrylic puzzle then Johan has one left of his Septenary cubes which require a pleasant 4802 moves to open. If you would like to buy it then let me know and I will put you in touch with him. Don't wait too long!

Septenary cube - last one available


Sunday, 4 August 2019

A Puzzle that Smells as Good as it Looks

...and is a Wonderful Challenge!

Ternary/Quinary Cube
As I write this the IPP is coming to a close and the prizes have been given out. I will leave the winners announcements to the official channels but the winners are well deserved. I try to keep those of us who cannot attend amused with tales of puzzling, failure and eventual success (no violence on my person this time).

The boyz are always keen to investigate any boxes that arrive - who knows, maybe there might be treats inside for them or, failing that, there will still be a box for them to sit in. This week, however, they were particularly interested in this box. It came from South Africa and maybe it had some of my (and their) favourite Biltong inside...Drool! They went crazy sniffing at the box and kept pestering until I eventually got around to opening it. I think they might have been slightly disappointed in the lack of meat inside but I was truly delighted with the puzzle I received. My good friend Johan Heyns has collaborated with the incredibly talented designer Aleksandr Leontev (Александр Леонтьев) to produce a stunning copy of his Ternary/Quinary Cube. I was delighted with my copy of the 136-minute cube and 205-minute cube (variations on the Sequence cube) which I reviewed here. Aleksandr seems to be the current Master of the N-ary puzzle which I am completely addicted to.

When Johan offered this puzzle for sale, I immediately said yes and hoped that it was possible to manufacture it. This type of puzzle can be fraught with unexpected difficulties. The original Sequence cube proved impossible for Aleksandr to produce in a stable fashion and the Ternary/Quinary cubes have not been without significant challenges and a setback. Luckily for me, Johan persevered and I received a wonderful puzzle in the post. Why were the cats so excited? I'm not entirely sure but Many of Johan's puzzles smell absolutely wonderful. This particular puzzle has a lovely cinnamony smell - I had no idea the cats would be attracted to that aroma but they definitely gave the puzzle a good investigation when it was freed from the packing.

It is made from Angolan Kiaat (corner blocks and smaller sliders), South African Kiaat (large sliders) with the maze plates made of Wenge separated by Pau Marfim. There are also brass side brackets and steel screws. It is a decent 9cm cube with a few protuberant screw-heads - very tactile and pleasant to play with. Also in the box was a small Allen key (only Johan and Eric have ever provided a tool with their puzzles before) and a leaflet with a little information on it as well as instructions on how to change between the two setups. The puzzle arrived setup for the Ternary challenge which is a nice easy level 170.2.2.2 challenge.

The evening that it arrived I set to work. The very beginning of the Ternary cube was immediately unusual because it had an entry sequence before the N-ary component began - I don't think I have ever come across that before. After about a ½ hour, I had come to the end:


At the end of the Ternary solution sequence
Interestingly, the maze pathways are completely hidden for almost the entire process with only the very early segments visible at the very end. I removed the four sliders and balanced them on the sleeping lap-cat to examine how the puzzle was constructed.


Incredible design and construction
I had not paid any attention to the sliders that came out and where they had originated. I assumed that they were identical...STUPID BOY! At this point, a small expletive might have left me as I realised that I could not put the sliders back in and reverse the process to the beginning. The next 10 minutes required a fun and very close examination of the pieces and the pathway and how they may interact at the very end of the solution. Another Aha! moment arrived when I understood how it had been constructed and I was finally able to embark upon the reverse process. That evening I was happy with my progress and went to bed reassured that I was able to finally solve something. The following day I went to the end of the solution, took the sliders out again and then read the first step of the instructions to set up the next (Quinary) challenge. I was a little alarmed at the instructions
DO NOT DISASSEMBLE THE COMPLETE PUZZLE! You have been warned!
I disassembled the parts that I was supposed to and marvelled at the tremendous skill in the design and construction:
Two halves separated releasing the maze plates

Details of the maze pathways (Quinary)
It is possible at this point to see how clever they have been in creating this masterpiece...the maze plates are held tightly onto the separation plate by small (but strong) magnets. Without paying much attention I pulled the plates off and set them back on the separation plate with the Quinary mazes pointing outwards. I quickly put it back together only to realise that I had absolutely no idea how it had all been oriented when I took it apart and, you guessed it, I could not put it back together again! I repeat...STUPID BOY!

I disassembled it again and rotated a plate and...nope! I tried again and rotated the other plate and...nope! OMG! I was in trouble! I reset it back to the Ternary setup and...nope! Aaaargh! I really should have paid attention to how it came apart. I spent the whole evening trying to assemble the puzzle and was rewarded after an hour or so with finally getting it back to the puzzle that I had already solved...PHEW!

The following evening I tried again - unscrewed all the nice screws that the instructions told me to and then removed the maze plates but left the sliders in place. The maze plates can be rotated either horizontally or vertically so I picked one and put it back together. Yes, you guessed it! That's a nope! Aaaargh! At one point I did manage to get to a conformation that would allow the screws to be screwed tight and with some relief, I went to work on the Quinary challenge (level 1251.2.2.2) only to find that after 4 moves, I was blocked from doing anything else - NOOOOOOOO!

So I took it apart yet again! Looking at the maze plates, I realised what I had done wrong (it took me another 20 minutes) and rectified the situation. That was the end of that day's puzzling. Yesterday I was finally able to have a play at the quinary solution. It is interesting that I found the longer challenge much more confusing than I was expecting. I have solved the Kugellager 7 (septenary) and 8 (Quinary) puzzles and apart from getting lost due to not paying attention, I solved them without difficulty. The Quinary cube took me by surprise with the confusing sequences in the solution. The fact that it is a blind solve makes it really difficult to predict the moves and it requires constant exploration. I was watching a film with the current wife, Whack! Ouch! and did find myself getting lost on several occasions and only realised it when I reached a position that was very obviously not a progression. The Quinary solve was VERY enjoyable and took me the best part of 2 hours (probably 2500 moves).


At the end of the Quinary solution
I am truly delighted with my purchase - Aleksandr continues to prove that he is a master of N-ary design and Johan is an incredibly talented craftsman. The fruits of the collaboration are revealed properly when the puzzle is solved and disassembled:

Inscription on one side of the separation plate

Johan's stamp
Intellectual Craft
I recommend a regular visit to Johan's store to see whether there is anything of interest to you. His workmanship is wonderful and puzzles are always a bonus when they smell nice and let's not forget that many come with a nice stand too. I still have my copy of Matrix next to my armchair taunting me - one day I WILL solve it!

Doesn't look like much - I have failed at it for 2 years!