Sunday, 13 August 2017

Unintended Consequences of IPP and Puzzles Solved on the way

The dining room table held my IPP haul
Having been at IPP last week, you might expect me to have an extravaganza blog post for you today. I certainly would have expected it too! BUT there were some unintended consequences of IPP that have conspired against me and this will only be a very short post - I do apologise but it will have a few good photos.

First of all, IPP is fantastic for catching up with friends from all over the world. Most of these guys I only ever communicate with via Facebook or email and as you can imagine there's a fair bit of hand shaking and hugging that occurs and even the odd kiss (purely for the girls of course). I was very pleased to catch up with the spouses of Neil and Peter Wiltshire and of course am always delighted to receive a little kiss. However this time one of them (or maybe both) had transformed into Typhoid Mary and infected me with a rather nasty version of the plague! I have spent the last 4 or 5 days gurgling with mucus and annoying Mrs S with other various sound effects both day and night.

Mrs S was feeling generally peeved with me because of my very talented sound effects and the prodigious quantity of goo that was being produced so when she saw the amount of new toys that I brought back from IPP and the state of the dining room table after my unpacking, she insisted that I put things away quickly. In my fevered state I whined that I didn't have any space to put them away and so she marched into my study to see absolute chaos! My desk was pandemonium. You MUST do something about this NOW!

A panoramic view of the desk - worth clicking on to get a full impression!
I do have a few shelves with either sci-fi books or my popular science books on them and she has decided that these can go into boxes in the garage and this will leave me some more shelf space for puzzles.

Unintended consequence number 1 - I am reorganising my study!

Seeing my crestfallen face (especially as I was feeling fairly shocking at this time), she actually felt sorry for me! At least I think she did......I have never seen such a thing occur before so I may be mistaken.

Unintended consequence number 2 - I will be allowed another set of shelves in our newly redecorated conservatory! Yay!!! Maybe I can get some more puzzles to fill it?

Unintended consequence number 3 - she said that the puzzles in the dining room are quite attractive! I had better pack some more in there quickly before she changes her mind.

A panoramic view of the sideboard in the dining room - sorry about the odd distortion
Before I reorganised it all, I had to take a quick set of pics to record the current state of the collection:

They are packed quite tight but I know where they all are!

Lord help me if there's a little earth tremor!

She wants me to move the bottom shelf into a cupboard!

But the cupboard is already quite full!
The collection has also spread into the living room:

I think the lamp table looks lovely

Puzzles awaiting play!

She says things are too messy - she may have a point!

An animal collection - only one puzzle which is just not right!

Puzzles solved on the way to IPP

A good friend of mine had managed to acquire a few new ones from Jan Sturm. I was offered the chance to join in with a purchase and....well you all know that I cannot resist a disentanglement puzzle or 10. I chose a few of the ones rated 4 or 5 stars on Jan's difficulty scale and they arrived a week before I went to IPP. I had to put a few in my bag to play with on the train to Paris. The first one was this Stake. The string loop was linked to the chain but not to the main puzzle and it looked initially to me to be quite tough. I sat down on the train from Sheffield to St Pancras and after we set off started to play. I was before 7am and I got a few very strange looks from my fellow travellers as well as the train guard.

5 minutes later.....

Well that wasn't particularly tough
There's a fairly nice little sequence to unlink from the chain and then unlink from the main puzzle but I would rate the difficulty of this one as 2-3 stars only. I solved it a few more times to be sure that I understood it and then put it away. Maybe I was going to be a genius at the IPP and solve everything in sight? I thus moved on to the next one - also 5 stars:

This one is significantly harder! Despite having on obvious exit point, the circular loop within the body of the steamer causes the string loop to twist and ruins any quick solution plans. After about 20 minutes I had this:

Solved - no idea how!
The trouble with many of these puzzles is the solution route is impossible to remember and more often than not I have absolutely no idea how I managed it. In this case I took it apart and immediately tried to reassemble it but seriously struggled to get it back to the initial conformation - I had to rely on the picture on the packet to be sure when it was back. In the end, it took me another hour and almost the whole way to St Pancras station to be sure that I understood the puzzle and could do it repeatedly. There is a distinct 4 steps to the solution of this and I would agree that it is a 5 star difficulty level.

Just before I got to London I attempted one final wire puzzle from Jan. This is called Cactus and the aim is to move the barrel to the other side of the wire. Needless to say, it is too big to fit through the wire. This puzzle was designed originally by Lambert Bright and called Saguarro (it was auctioned in Nov 2011).

The solution to this puzzle uses a basic technique that is common to quite a few puzzles that require you to move things from one side to another. Of course, I had no recollection of the techniques I had used before and so I needed to work it out for myself afresh. Part of the fun of having almost no memory is that puzzles always seem new to me and are a challenge each time I solve them. Don't anyone tell Mrs S please! With about 10 minutes of play I had managed this:

A fun little challenge!
This had got me from Sheffield to London and had entertained me on the way to the upcoming puzzle extravaganza!

Wish me luck rearranging my study - I will try to post some more pictures after I am done.

Sunday, 6 August 2017

The IPP was a great success!

Dear Lord how am I going to explain this to Mrs S?
There's not going to be a proper blog post today. I am currently in Paris attending the madness that is the International Puzzle Party. Luckily for me it is the one place where crazy misfits like me can feel at home - puzzlists from around the world meet up to catch up on news, new developments in the design of puzzles and also to meet new friends. There's a design competition and an exchange - I was very privileged to be the exchange assistant for a very talented young man called Jean-Marc Haché. Even after a catastrophic failure of most of his exchange puzzles due to freight damage, with a large pot of superglue we managed to make good many of them and he still managed to exchange a good number of puzzles and I was so pleased to see him smiling at the end.

Today there was the "free for all" which is the puzzle party itself - puzzles are given and bought. I spend pretty much all my cash in next to no time and then moved on to PayPal. My haul is pictured above and I am delighted! Mrs S on the other hand will be deeply unhappy as I have no idea where they are going to go. I may end up sleeping in the street if I survive the night that I get home.

My thanks go to the organisers for arranging such a wonderful event and I am already looking forward to meeting my friends again at both the next Midlands Puzzle Party as well as everyone at a future IPP.

Sunday, 30 July 2017

Pyrigan's No. 808 Puzzle

Three years in the making, Pyrigan’s No. 808.
Hi everyone - first of all let me apologise for the lack of a blog post last weekend (that is the first missed weekend post in 4 years). I had to work at the hospital last weekend and had a good junior with me and was planning on making him do all the work whilst I drank coffee and posted this article from the Puzzlemad foreign correspondent. Unfortunately, just as I was beginning to think about finding a computer to work on, a lady came in with a ruptured abdominal aortic aneurysm and responding to these cannot be be delayed. After nearly 6 hours and a fair bit of blood and a safe delivery to the ICU I was just not up to editing a blog post and so it got skipped. I know that it's a very poor excuse but it's all I have. You'll be pleased to know that the lady is making good progress.

So today I have for you the Puzzlemad foreign correspondent, Mike Desilets' wonderful article on a brand new puzzle from a brand new designer and craftsman. I am hugely grateful to Mike for all the work that he puts in and I know that you all enjoy a having a new and fresh pen to read. He has even interviewed the designer for us which is something never seen on this site before. Here's Mike:

Aloha Kākou puzzlers,

Thanks Kevin, for that kind introduction (I never actually know what he’s going to say in the preamble, but it’s usually very flattering - Ed - I do my best). This edition of Puzzlemad brings you a special report on the recently released No. 808 puzzle from Pyrigan & Company. Never heard of them? Well, I aim to rectify that in this post. Pyrigan and its owner-designer John Partridge should absolutely be on your puzzle radar. John actually has a blog with some great posts of his own which you should check out (Kevin, you must get the Pyrigan blog on the side-bar. Quickly man! (Ed - done!)). But beyond this, he has succeeded in bringing a very special puzzle to the market and it deserves the attention of all serious puzzlers and collectors. I was lucky enough, through a bit of a fluke, to get one right away and I’m very happy I did.

3D printed prototype of the No. 808
A little history first, as we always do. I first became aware of Pyrigan during one of my bouts of internet puzzle searching. One link led to another and somehow I ended up at John’s page. This was back in 2014 or so and the No. 808 was still in the development stage. John had made a 3D print of his design and was still working out some bugs, but with the avowed intention of eventually producing the puzzle in aluminum (most likely, there were some other material options). I thought it looked pretty intriguing and unlike any other puzzle I had seen before. I bookmarked the page and then immediately moved on to other stuff, forgot about the 808, and neglected to ever check back in. As you all know, a tremendous number of puzzles get to the 3D print stage and advance no further. I had no reason to be particularly hopeful for John’s puzzle, nice though it looked in prototype. Little did I know, however, that John would continue to labor away on the No. 808 over the following three years (he does have a real job to maintain, after all). Then on June 28 I received an email that the puzzle was available for sale—in aluminum—on his etsy site! It was a bit of a shocker. I went to the page and sure enough, there was the No. 808 in all its glory. It was a real eye-catcher (Ed - it certainly is). Perfectly proportioned with a great two-tone matte finish. I wanted it immediately. I looked at the not insubstantial price tag, hesitated for about two seconds, and then decided that I still wanted it. The No. 808 will run you $120US. It’s a serious puzzle for serious puzzlers and collectors. But in the realm of precision engineered metal puzzles, this is really not an unreasonable price tag at all. In fact, it’s a bargain. Projects like this require vast amounts of time and energy that can’t realistically be added to the price of the puzzle. They are really a labour of love by puzzlers for their fellow puzzlers.

Nicely engraved
John dropped my No. 808 in the mail and it arrive at my office (Ed - I wish I could have puzzles delivered to my workplace) less than a week later, well wrapped and in perfect order. This puzzle is just as beautiful in person as it is on the Pyrigan website. As you can see in the photos, it consists of two halves joined together with a pair of dovetails to form a solid bar. Solid except for the two holes, that is. One side is matte black and the opposite is a matte silver, both bead blasted and then anodized. Model No. 808 is stamped on one end of the silver side and the Pyrigan logo is very nicely stamped and painted red at the center of the black side. Dimensions are 6.5 inches long, 1.25 inches wide, and 0.75 inches thick (Ed - aaargh! Why can't the US use sensible units?). It feels solid in the hand and is a little under a half pound in weight (Ed - aaargh again!). The two halves are machined from T6061 aluminum with a tolerance of +/- 0.002 inches. When you finally solve this puzzle, you will get to experience the kind of fit and movement such fine tolerances produce.

Silver side with model number.
Black side with red logo, tastefully done.
The No. 808 took me a few days to solve, but that’s partly because I try to spread out the enjoyment of any puzzle costing over a hundred bucks. I really don’t want or need to rush to the solution. It’s better to enjoy the mystery for a while. But of course, after not too long, I DO want to solve the puzzle and get increasingly serious about it. Eventually, after much fiddling, I cracked the No. 808 and was rewarded with a “token” of appreciation from Pyrigan in the form of a red plastic coin/token/medallion with the Pyrigan logo printed in black. I love little touches like that in a puzzle.

Halves apart and token released. Just as pretty in the solved state.
Of course, I can’t tell you anything particular about the mechanism. As usual I’ll try to skirt the edges enough to give you a sense of the puzzle without giving anything away. There is one thing I am permitted to tell you regarding the solution: it does not involve violence to the puzzle. So don’t hit your No. 808. It will only make you feel ashamed. The first thing you should know is that this is pretty much a ‘black box’ puzzle. It does give you some very subtle feedback, but it’s very limited. I know some puzzlers are not particularly enchanted with secret internal mechanism puzzles, feeling that they involve too much random action and, well, luck to solve. I can sympathize with that attitude, but I also feel that you will miss out on a lot of interesting puzzles if you take it too far. It’s just a different kind of solving experience and I’ve come to learn in hindsight (post-solve) that many of these puzzles are susceptible to a higher level of deduction than one would think. The No. 808 makes just a little faint bit of noise when shaken gently. Could it just be the token? Or could it be something else? Although the fit of the two halves is nearly air-tight, there is a miniscule amount of movement. These things can matter. They may not get you to the solution in a straight-line path, or at all, but when you solve the puzzle you’ll wonder why you didn’t read the clues better. I always do (Ed - me too).
 I had a great time with the No. 808. There was a great deal of shaking, turning, twisting and that type of thing (I tried it all - Ed - did you blow on it or submerge it in gin? If not then you didn't try it all!) and the puzzle eventually opened. I hadn’t figured it out properly, but with enough fiddling the correct positioning and/or sequence of movements allowed it to open. Inspecting the innards, I felt I should have been able to solve it properly. The mechanism uses a known principle, but in a fresh new implementation. The addition of the dovetail element, with its tricky but ultra-slick movement, adds another layer to the opening and really sets the No. 808 apart. Inspecting the fine engineering and machine work on the inside was a joy unto itself.

Resetting the puzzle requires some additional fiddling, but is otherwise painless. In my correspondence with John, he clued me in on an aspect of the puzzle that is actually pretty important. The No. 808 can be reset in at least three different ways, each of which changes the difficulty level of the puzzle. One way will make the puzzle fairly easy to open, for the experienced puzzler at least. This would be a great setting for certain puzzle-impatient friends or family, assuming you let them play with your good puzzles that is (I don’t!). The other modification simplifies one aspect of the puzzle a little, providing a kind of medium setting. Unfortunately that’s all I can really say. If you buy a Pyrigan No. 808, I’m sure John will divulge the details. But better still, consider finding the alternative settings an additional challenge. Yet more value from the No. 808. (Ed - I NEED one!)

As a first puzzle from a relatively new designer, I think it’s a real triumph. For any serious puzzle collector, this is a must-have item. Doubly so for those who enjoy fine metal puzzles. I’ll admit my bias right now, I enjoy fine metal puzzles greatly. This one has gone straight to the top shelf. Pyrigan have produced exactly 106 of these puzzle for sale. It’s a limited, numbered run. Your number is on the inside, waiting to be discovered.

As far as replay value, the No. 808 has plenty. Even after studying the internals and understanding how the puzzle functions, you will not necessarily be able to reopen it easily. It is a whole new challenge, of a different type, to find a technique that will open it with a minimum of random movements. It still takes me at least a few minutes to open mine, and it’s a two-phase process. The puzzle will open part way with one set of movements, then there is some additional work to achieve full release. I’m getting closer, but I wouldn’t say I have it mastered yet.

Now for the special part of this article. I thought it would be of interest to the readership (and to me) to get some information about the No. 808 straight from the source. This was easy to arrange since John and I had already been emailing about the puzzle. He graciously accepted the interview and the results you can read below. Personally, I find it extremely interesting to hear how non-professional puzzle designers manage to get their puzzles manufactured and out onto the market. I suspect many of you do too. So read on . . .
Mike: This is an obligatory question, but it simply must be asked in every puzzle interview: How and when did you become interested in mechanical puzzles and what are your favorite types? 
John: I remember playing with my father's "15" puzzle when I was very young, probably six or seven. I'm talking about the classic sliding number puzzle. It was beautifully made from stainless steel and I felt very pleased with myself for figuring out how to solve it. I also remember my grandmother giving me a 6 piece burr puzzle, another classic, at about the same age. I really enjoyed it too and when I let my parents and grandmother know how much I liked those kinds of puzzles, every birthday and every Christmas brought more. Over the years I've developed an appetite for sliding block puzzles (e.g. "Dad's Puzzle"), ring and string topology puzzles, tavern/wire puzzles (e.g. all the old Puzzletts), Japanese puzzle boxes, etc. 
Of course, the puzzle that tops the list is Rubik's Cube. When an ad for Erno Rubik's "Magic Cube" showed up in the back of Games magazine, I jumped on it and I still have my original Hungarian-made cube. That puzzle was just stunning and I still enjoy playing with twisty puzzles. It took me a couple of months to figure out the general solution but it was totally worth it - that was the most satisfying puzzle experience I've ever had (Ed - amen!). These days my favorite type of puzzle is the kind I make, namely high tolerance machined metal puzzles like Wil Strijbos'. 
Mike: A relatively small fraction of puzzle enthusiasts decide, at a certain point, to try their hand at designing. What inspired you to take the leap? 
John: Honestly, I'm not sure. I had my first idea for a puzzle back in the 1990s and the more I thought about it - driving to work or while falling asleep at night - the more I became convinced it could work. So it wasn't so much a "leap" as a gradually developing conviction that it was doable. 
Mike: Not only did you take the leap, you leapt directly into the most rarified puzzle class, precision-engineered metal. Do you have some background skills or training that made this seem less intimidating? 
John: Thanks for the kind words! I chose machined metal because the mechanisms I come up with are sensitive to misalignment. I don't think they'd work well, maybe not at all, if I tried to make them out of wood or had them cast. No, I don't have any professional skills or training, just a hobbyist's interest in mechanisms and machines. I've been tinkering with stuff since I was a kid. I was into electronics and built Heathkits for a while; I was also into tuning and fixing my bike and later into tuning and fixing my car. I took a machine shop course one semester and learned how to work a Bridgeport milling machine. That gave me a rough understanding of what kinds of things it was possible to make and an appreciation for mechanical engineers and machinists. 
Mike: How would you describe your creative process for the No. 808? Flash of inspiration? Long evolutionary development? Trial and error? Little of each? 
John: Part of the inspiration for #808 came from the "impossible dovetail" puzzles that Norman Sandfield and others have made. I really liked the way they looked and decided I wanted to try my hand at it. Model #808 is actually the third puzzle design I've come up with but I made it first because I thought it would be the easiest of the three to have a machine shop make. I'm pretty sure I was wrong about that! 
Never trust a dovetail.
Once I had the idea for the mechanism, I looked for a CAD (Computer Aided Design) tool that I could use to model it and soon discovered OpenSCAD which was open-source and easy for me to learn. I generated some .STL files to give to a local 3D print shop, found that the prototype worked beautifully, decided the solution was too easy, added some complexity, and then spent three years refining the design and finding a machine shop to make what I needed. I guess that's a "little of each". 
Mike: Moving from concept to prototype to final product undoubtedly involves a lot of refinement. Where would you say the most fundamental changes to the original concept were made and at what point did it become just fine-tuning?  
John: The most fundamental change occurred after my first functional prototype where I decided the puzzle was just too easy. So the puzzle sold today – which is Revision 15 – is functionally the same as Revision 2. I can't talk about the more important changes made in Revisions 3 through 15 without giving the solution away but I would say the biggest jump was going from Revision 1 to Revision 2. 
Mike: Did the design need to change significantly due to manufacturing constraints? 
John: No, not significantly. What changed the design the most was usability issues. I'm not giving the solution away when I say that there are parts inside the puzzle and in the early designs those parts were likely to fall out when you solved the puzzle – which is not what a puzzler wants at his moment of triumph! So I had to solve that. A bigger challenge was to come up with a way to keep the major pieces correctly aligned. I went through at least a half dozen different ideas trying to get that solved.
Mike: From your blog, I understand the entire process to produce No. 808 took 3 years. If you knew at the start what you know now, how long do you think it would take to produce the puzzle? 
John: Oh golly, probably six months. I lost a lot of time not knowing how to pick a good machine shop and ended up wasting twelve to eighteen months going back and forth with a machine shop who just wasn't making progress. The other big thing I learned is how important it is for a professional mechanical engineer to create design drawings for the machinist at the machine shop to read. I'm just a hobbyist with no training on how to correctly and rigorously compute tolerances – they call it "GD&T" for Geometric Dimensioning and Tolerancing. I wish I had known three years ago how important it is!
Mike: On a personal note, at what point did you pull all your hair out and consider dropping the project?
John: I got pretty discouraged when months were going by with no progress from my machine shop. But the solution was simple enough: switch to a different machine shop.
Mike: On an even more personal note, are you married and if so did the No. 808 project cause your partner to consider smothering you in your sleep? 
John: Fortunately, quite the opposite! My wife has zero interest in puzzles (Ed - sob, mine too) and although she finds my interest in solving and making them incomprehensible, she totally supports creativity in whatever strange form it may take. I'm a very lucky man 9 (Ed - yes you really are)!
Mike: I know you’ve also produced some classic geometric dissection puzzles in acrylic. Do you plan to explore other materials in the future or will you continue to focus on metal to capitalize on what you’ve learned?
John: For 2D puzzles, acrylic is great: it's inexpensive, looks great, and pretty easy to fabricate with. For 3D puzzles, I think aluminum is the best choice. It's no more expensive than plastics you might want to machine (e.g. delrin), it gives you lots of finishing options (e.g. bead-blasting, anodizing), and all machine shops are equipped to machine it. I think I'll be sticking with it for a while. I have a half dozen or so design ideas that I'd like to have made and all of them would work great in aluminum. Actually, I'd really like to make one in stainless steel but steel is much more expensive. 
Mike: Based on your experience with the No. 808, what are two pieces of advice you would give to aspiring puzzle designers (especially those who still need to keep their day job)?  
John: Well, because of cheap/free software and cheap 3D printing it's never been easier. Learn a CAD tool like OpenSCAD, Fusion 360, or Onshape – those are all free for hobbyists. Get a 3D printer for prototyping or find a local 3D print service (if you have kids, a lot of high schools have 3D printers). And then get into the Test-and-Revise cycle; iterate as frequently as time, money, and interest allow.
Mike: What can we expect next from Pyrigan? Can you give any hints on the mysterious No. 360?  
John: I've got some designs coming that I'm very excited about but I have to be disciplined about how much money I spend on what is, after all, just a hobby. I can't afford to start on Model No. 360 until I've sold most of the 808s but I think the mechanism is really clever, if I say so myself. Maybe I'll do a Kickstarter or something. 
An early No. 808 prototype plus some upcoming Pyrigan designs: Model No. 518 (multi-colored cube), Model No. 921 (circular), and Model No. 360 (rectangular with red logo).
Mike: And finally, I must ask, don’t you think Kevin Sadler is an all-around stellar chap for letting us do this on his blog?  (Ed - aw shucks! Where do I send the cheque?)
John: Indeed he is! I tried my hand at reviewing puzzles on my Pyrigan blog and the result is pretty disappointing - I'm not very good at it, I have to admit. Kevin's blog does the job properly! (Ed - now I'm really blushing!)
Thanks again John, for that interview. You’re a great sport and I’m sure I speak for the entire readership when I say we will be keeping Pyrigan on the radar. But no pressure!

Readership, I need to mention that John was much too modest about his blog posting. His posts are excellent,  informative, and much more to the point than the long-winded stuff I generate (Puzzlemad pays me by the word (Ed - OMG! Do I?)). I suggest you check it out. The link should be on the Puzzlemad sidebar by now. John also gave what looks to have been a fascinating presentation on modeling curvature at the 2016 Celebration of Mind in Massachusetts. Check out the powerpoint here. Really cool stuff. When you visit the Pyrigan blog you will also get hints on other Pyrigan puzzles in the works like Nos. 360, 518, and 921. Which reminds me, I forgot to ask John where he gets these numbers. 

I will just conclude by repeating that the Pyrigan No. 808 puzzle is a real winner. It is of unbelievably high quality for a first puzzle, or for any puzzle for that matter. I recommend you treat yourself and pick one up. Back to you Kevin....

Wow!!! What a fantastic blog post! Thank you so much Mike and also John for contributing your time as well as your skills. I will be looking to buy one of these after the financial hit of IPP has wained a little.

Friday, 21 July 2017

Getting more popular - 900k pageviews!

Main blog page

New additions page

This number just crept up on me! I am continually amazed that anyone reads my drivel. Thank you all for your time! Maybe 1 million pageviews bythis time next year?

Sunday, 16 July 2017

One of the Toughest Puzzles I Have Solved

Helix the Burr
Many months ago I was chatting via email with that good friend of mine that I mentioned last week who has been giving me such great advice on which puzzles to buy. He suggested to me that I should hunt around and see if I could obtain a copy of the Helix the Burr Puzzle as he thought it was something really special. I immediately shot off to Bill Cutler's website to have a look at it. Bill had designed it in 1982 - he had been looking for burrs with an interesting structure and sequence to them. It was originally intended to become the Wausau '82 puzzle, however, the design quickly became too complex and it was formally introduced at the Sixth Annual International Puzzle Party at Jerry Slocum's house on April 2, 1983. The first solution was received from Edward Hordern.

At this time Bill had designed it entirely in his head and by real model prototyping. It must have been quite a feat to achieve something like that and is just a small hint at the incredible brain that he must have. His website describes the puzzle as follows:
"This burr features the most interesting disassembly sequence that I have ever created. The name comes from the spiral structure that is created by the 8 pieces surrounding the central 5-piece core."
The original batch of 20 puzzles made by Jerry McFarland was sold between 1990 and 1992 and I am not sure whether Bill ever released another batch (his site suggests that more may be made available in 2017). Brian Young made a batch of 30 of them in 2004 as a Limited edition. Both Bill's and Brian's editions have been long sold out and have been seen at auctions for enormous sums. In 2015 Eric Fuller made a batch of them too (using Maple and Bubinga). He made 40 copies in total and they sold out quickly. I am not sure how I missed out but I suspect I had already spent my budget. Of course after being told how essential the puzzle is, I had been kicking myself. You may notice that the puzzle actually appears on Eric's home page.

Recently Eric has sold off his backlog of spares to free up space and I tried to get one from him then. I put in a fairly decent bid and unfortunately missed out again. I had more or less resigned myself to never getting a copy when another one turned up at the last Cubic auction. I hate auctions with a passion because I never seem to win anything and the couple of times I have done so I got carried away and spent far too much and ended up resenting the puzzle I bought. But the last auction had so much good stuff on it that after lurking for a while and watching a few items that rapidly spiralled out of control, I noticed a copy of Helix the Burr not having too much interest. I put in a last minute bid and was astounded when I won. I was pleased to see that the owner was based in the UK and I wouldn't be caught by the customs men.

After a few days of admiring my purchase I found some time to play and noted that there are 3 or 4 moves that didn't seem to go anywhere. Luckily there is no long dead end. I then noticed the wonderful helical arrangement of the cross pieces and wondered whether they were in that arrangement for a reason? Of course they are! After a couple of days of getting nowhere, I made a big discovery. There is a truly beautiful and very precise helical sequence before the whole puzzle suddenly becomes very loose and spreads apart. This movement scared the bejeezus out of me and I immediately reversed my tracks! After a gulp, I repeated it a few times to check that I knew what I was doing and continued with the search. Despite it all becoming incredibly rickety and looking like it might collapse in a heap, I realised that it was still very stable. This is quite amazing to me and a huge tribute to both designer and craftsman. With everything really loose, I hunted for the next move. And hunted. And hunted! Nope! Nada! Not a thing! I put it back to the beginning and whinged about it to my friend Derek!

Derek asked a pointed question about what I had tried and the result of his questioning led me to a horrible realisation. There is another reason why the puzzle had to be designed in Mr Cutler's was not just the year. Think© about it! This realisation opened up a whole realm of ideas but interestingly not a lot of them were possible. In fact, only one piece was movable and in several ways. I went through them all and of course the very last thing I tried produced something fascinating. After some more interesting helical themed ideas I had a nice pile of wood:

Just look at the notches on that bottom piece!
Looking at the pieces, it can be seen that the notches are made in ½ and ⅓ thicknesses. The central piece is a masterpiece! Now it was time for the reassembly. Gulp! Now, I am NOT terribly bright but I am not completely stupid! A puzzle that cannot be modelled with Burrtools and without a printed solution is not one I am just going to disassemble and pile up the pieces. That would be a recipe for disaster and I already have one burr that has sat in pieces next to me for a couple of years and I don't want another one! So I had taken a very nice sequence of photos with my phone and had actually kept all the pieces in sequence on the table:

All in order and orientation
It was time for the reassembly and after collecting all the pieces up for the obligatory photo on my kitchen granite, I set them all out in the order of the pic above. I started following my disassembly pics in reverse order. I was ready for a huge triumph and a big blog post......and failed! I got to this bit:

Looks easy?
Something was wrong.....the position above and insertion of that piece was impossible! HELP!!! I tried for hours and failed again and again and again. Mrs S was getting fed up and it was time for me to cook. The pieces were gathered up and put away for a later attempt.

Three days later I proved to myself, and am confessing to you all out there in puzzle land, that I am not terribly bright. I had not been able to follow my own pictures! It would appear that I cannot tell the difference between a half height notch and a third height. Let me tell you that in puzzling size really does matter - I had a single piece completely upside down. After 3 days of trying the same thing again and again, I forced myself to start from the beginning. The very first set of 3 pieces can be put together incorrectly but still look ok. However this allows the subsequent moves to continue correctly until this one and you WILL hit a wall. If only I had been clever enough to look carefully or to start at the beginning, it would have saved a whole lot of chest pain and mumbling to myself with the subsequent laser burning stare from she who frightens me to death.

I have now solved it several more times and can now follow my reassembly pictures every time! I haven't dared attempt it without them. I must agree with my puzzling mentor; the Helix the Burr is a fantastic puzzle and well worth adding to your collection.

Sunday, 9 July 2017

I Fail Brian's Challenge

Sonnefeld's Cubed Burr
I have heard about Dic Sonnefeld's Cubed Burr many times over the last 5 or so years but never actually seen one or played with one. I had been told by a few people that it was a terrific puzzle designed without the aid of Burrtools (which many have claimed has lead to the design of hundreds if not thousands of extremely complex puzzles which have nothing of interest except that they have a very high level or very odd shapes). The Cubed Burr consists of nothing more that 3 fairly simple burr sticks in a simple frame and has a relatively low solution level of 9.13.4 moves. Without having seen it and only knowing very little about it, I made no real effort to acquire one. Then a VERY good friend of mine suggested this puzzle to both me and to Brian Menold as something that is not just a good puzzle but one that is ESSENTIAL. When this particular friend gives that sort of advice then both of us sit up and listen. He has been puzzling a very long time and has never been wrong to my knowledge in the advice that he has given me. If he says jump then that is what I do and ask questions later.

Of course, a good craftsman always gets permission to produce a puzzle from the designer and I was luckily able to put Brian in touch with Mr Sonneveld and permission was duly granted. Brian made quite a few copies of the puzzle and, as always, used a wonderful selection of beautiful woods. I was hovering over my keyboard when the email update came in; I was poised and ready!

Apart from being told by my friend that it was a good puzzle (not why) I knew very little about it. I was interested in what Brian wrote:
"Don’t be fooled by number of moves in this one! It is only a 3 piece burr within a box, but these are moves that will really separate the men from the boys. When I was putting these together I couldn’t see how anyone would be able to solve this puzzle without some sort of help. But that is my old feeble mind which finds everything to be a challenge! These are very hard to find, and when available, command some extremely high prices. I wanted to give the cube an interesting look (it deserves it) so I put a little extra work into the construction. There was also more waste than usual. So these definitely belong on every collectors shelf. A really terrific design!"
How could I resist? I immediately ordered the above version - a Zebrawood frame with East Indian Rosewood pieces and 5.7 cm3 in size. They were all stunning but I am a sucker for Zebrawood!

This was the first one that I went to play with when I had a quiet moment one Saturday after they arrived. There is actually very little written about this puzzle on line apart from a few copies that have appeared in previous auction. John Rausch has a single sentence on his site (well worth browsing around if you have never had a look before). In fact knowing that John had said this made it all the more intriguing:
"A three-piece burr is contained within the cube. It is very difficult to disassemble and assemble, requiring rotations and other unnatural acts in addition to the usual burr movements."
Unnatural acts??? Wow! How can anyone resist that? The Puzzlewillbeplayed page says only that rotations are required. My only experience of Sonneveld puzzles was the Knobbly burr (also bought from Brian early in his and my puzzle careers) and also a delightful little copy of his 3 piece burr which also requires rotations:

Lovely little 3 piece burr
Needs rotations to unhook the pieces
Mrs S had gone out one Saturday and I settled down with a lap cat and the Cubed Burr. I started exploring carefully. It is quite a confusing puzzle with a lot of possible moves which can go up blind paths for a little way before stopping dead and then forcing a back track. Not only are there a bunch of linear blind ends but there are also a fair number of rotational blind ends too! I have a very linear brain and trying to keep track of the turns was quite a task. Eventually by pure luck I managed to perform a couple of rotations and after peering inside the hole I had created, I suddenly realised that the first piece would slide out with a simple sequence. YESSS! I am a genius! Errrm, nope - I am not! With the removed piece precariously balanced on the sleeping cat's back, I continued my exploration.

OMG!!! Not only does it require a good number more moves for the next extraction but there are lots and lots of possible linear moves and rotations. I quickly found myself getting lost and resorted to my old trick of moving to and fro in the solution ever more moves to try and keep my recall current. I spent a very happy couple of hours with sleeping cat and puzzle getting nowhere. When I thought I had exhausted every possibility it suddenly occurred to me that I could perform 2 rotations in a different order and this would allow a different direction of turn for the second. AHA! The 2nd and then third piece came out after about 4 hours of puzzling and I even managed to not disturb the cat!

Looks easy? Definitely not!
I am pleased to say that after so many hours moving just a few pieces I was even able to put it back together again! Yay!

So where does the title of my post come from? So far it is just a tale of perseverance and success. Am I a genius? Hell no! Let me tell you a bit about the Chequered board burr:

Chequered Board Burr
The Chequered Board Burr designed by Frans de Vreugd was in the previous update from Brian and as you all know, I am a sucker for board burrs as well as wood (and twisties and disentanglements and sequential discovery puzzles and......) so when Brian released a few new ones then I couldn't resist. He said this about it when they were released:

"As you may have seen me mention on this site, that I love Board Burrs. This is a follow up to Frans’ Tricoloure that I made a while ago. While this one doesn’t have any swapping of positions of pieces it does have two solutions which are equally difficult, both requiring 27 moves to solve. One solution is and the other Although the checkering of the pieces is decorative, it does provide an indication of the piece placements."
I had previously bought and enjoyed the Tricolore and written about it here. so was delighted when this puzzle looked so similar but had a completely different set of solutions. I opted for the version made from Redheart and Yellowheart with Ziricote splines.

I received it in May this year and promptly began playing with the company of cat and Mrs S. I had a really nice time working through the solution to the assembled puzzle that had arrived and was pleased that it only took me a single evening to be able to both disassemble and reassemble it. The one that had arrived was the easier one with level and it is marked out by the fact that the chequering is not quite right as you can see in the picture above. It only took a few seconds to find the first piece removal but after that it's a fun bit of exploration.

Just look at the craftsmanship! I love the splines.
I am not one of the geniuses that can assemble puzzles from scratch (one reason I seldom attempt packing puzzles) so once I had played with the easy assembly for a few evenings, I went to burrtools and "found" the other assembly which does indeed produce the proper chequerboard pattern:

Subtly different - looks much better this way
I left it like that for a few days and then began to attempt the disassembly. It has been sitting on my armchair for nearly 2 months in this assembled state and for the life of me I cannot find the sequence of moves to remove the second piece! If you look at the armchair picture on my New additions twisty update then you will see where it has been - it has caused a pain in my head for weeks and weeks and often a pain in my A if I sit down without remembering it is there. The moves for that second piece removal just seems to be so beautifully hidden that it has eluded me the whole time! Brian has me beaten! I will be keeping it on my armchair until I have solved it and can blame Brian for my backlog of unsolved puzzles - he is causing an obstruction! Thanks mate!!

If you are interested then Brian has a few puzzles left over from recent updates and all are well worth a place in your collection. Go take a look.

Sunday, 2 July 2017


A couple of weeks ago whilst bemoaning my falling behind, I showed of a lovely little toy from Eric Fuller's Cubic Dissection called Rift. It was designed by Tim Alkema and consisted of a "mere" 3 piece burr entrapped in a split cubic frame. I liked the puzzle a lot, not for its' complexity, as it wasn't terribly tough but for its' interesting and enjoyable dance of pieces. I also chose it because I am a sucker for a set (I have absolutely adored the NOS puzzles for a similar reason). When Eric released the Rift puzzle he also promised a bigger brother by Tim, the Schism.

In the last update, there were quite a few new toys to choose from and despite everyone thinking that I always buy the lot, I actually can only afford to purchase a few at a time and, of course, Schism was on my list as a "must have". Eric's new packaging is great and this beauty in Ash and Granadillo arrived looking very like it's little brother. This time we have a 6 piece burr in a split frame. They will look absolutely spectacular side by side on display.

Eric said this about it:
Schism is the bigger brother to the popular Rift puzzle released in the last update. The elegantly simple cage interacts with a standard six piece burr in this instance, resulting in a difficult level solution. Again with the unconventional moves...disassembly alone is a challenge. This pair of designs has been super worthwhile and is a must have for any serious puzzler.
I have to say that I do agree with him. It is again, not a hugely tough disassembly (just nicely challenging) but it is a really nice fun sequence with the frame interacting with the pieces during the disassembly.  The puzzle remains stable and does not fall to bits once a couple of pieces are removed and this allows for the possibility of a reassembly by a non genius like me.

Simple pieces - signed and dated as is customary
I am not one of those burr geniuses who can dismantle a puzzle and then scramble the pieces before reassembling from scratch several hours later and I certainly am not a Laurie Brokenshire who has poor Ethel disassemble everything for him so that he just manages the assembly without prior knowledge of the pieces, moves or order. When I take a burr apart, I carefully place the pieces around me (often on the sleeping cat) and am very careful to keep them oriented as they came out and in the correct order. After that I can often carry out the assembly immediately with that help. Lord help me if the cat moves and the pieces fall off! I will then take it apart and put it together again several times until I have learned which pieces go where and can then risk a scramble. This sounds like a bit of an ordeal but to me this is all part of the fun. It gives me several extra hours of fun with a new toy and then I can make the Burrtools file to finish the play off.

The Schism is pretty logical and it only took me 3 or 4 dis/assembly routines before I had it learned and I love it. At the moment I can now quickly take it apart, leave the pieces in a pile for a few hours and come back to it and put it together again with a little bit of deduction. When I finally manage to clear up the shithole that is my study then I hope to put the doo puzzles by Tim together on display.

I am very surprised that it did not sell out immediately as it is quite delightful. I suspect that all you serious puzzlers prefer the much harder puzzlers and are leaving us boys of "very little brain who think of things" to get on and enjoy the simpler more beautiful puzzles like this. If you are thinking of buying a nice little caged burr which is fun for beginners and experienced puzzlers alike then there are quite a few left for sale.

Sunday, 25 June 2017

Mike is my saviour - Quik-Sane and Solitaire Chess

Something old, something new, something borrowed, something blue.
Last week I bemoaned the fact that I had fallen behind with my puzzling despite still being tempted to buy more and more toys by those pesky craftsmen. That trend continued this week when I received some new toys from Eric Fuller (including one from his auction site which I had been after for quite some time) - I will show them off on my New additions page soon. I've actually had a week of annual leave this week and have only had time to solve just one puzzle during the whole week! Mrs S has forced me to do lots of "maintenance stuff" around the house as well as do a very thorough (and exhausting) clean up of the garden. In fact I am quite surprised that I can move today after spending so many days lifting and bending outside in the blistering heat (it was 38ºC)! I was even able to get up and down to re-grout and reseal my shower this morning! Whenever I seem to be up against a blog-writing wall, my good friend and the official Puzzlemad foreign correspondent, Mike Desilets, springs into action to my rescue with something very different to my usual fare which is always beautifully written and interesting. He has done it again this week - thanks Mike.

Aloha Kākou puzzlers,

I’ve been mulling over this material for a little while now, but when I saw the title of Kevin’s last post, I knew I had to kick it into high gear. “Falling Behind” is not a good feeling in any context, puzzling included. I have fallen so far behind on my own tanglements that I’ve had to take refuge in the warm arms of Amanda’s vintage puzzle collection. Since Kevin can’t partake, being fully two oceans away, I will try to buy him some time with an overly long, rambling post. I trust his next post will be titled “Catching Up.” (Ed - I will do my best)

This installment picks up where the last one left off - in the realm of vintage sliding block puzzles. There is one more of that class that I feel compelled to highlight before taking you off in a completely unexpected direction. So let’s get right to business.

Our fourth vintage slider comes from Amanda’s collection, as you probably guessed, but I intend to get copy for myself very soon. It is the Qwik-Sane puzzle, invented by James R. O’Neil and produced and sold by WFF’N PROOF (WFF = well-formed formula). WFF’N PROOF enjoyed an early peak of popularity in the 1960s and 70s, which is why I put them in the vintage category, but they continue to produce their diverse range of logic-based puzzles and games today (under the care of the Accelerated Learning Foundation). This line has an explicitly intellectual bent. As the Qwik-Sane box informs us, this is “A Topological Puzzle for Thinkers.” The attitude and approach foreshadowed Binary Arts’ early philosophy (and marketing) and has a certain Gardneresque quality to it. WFF’N PROOF was also one of the early advocates of puzzles and logic games for “mental fitness.” Their signature logic game, WFF’N PROOF, claims to improve your IQ by 20 points after three weeks of play! Of course, the marketing of logic games and puzzles for mental fitness has been all the rage over the past few years. This despite the fact that there is no empirical evidence that they provide significant mental benefit. If you’re after mental improvement, then I suggest getting out of your puzzle chair and exercising. You’ll find this article very revealing. But marketing is marketing, and the idea of puzzling as mentally ‘healthful’ has an undeniably intuitive pull. The good people at Thinkfun® have been particularly adept, though certainly not alone, in capitalizing on this fact. Witness their repackaging of several established puzzles into a “Brain Fitness” line that encourages the buyer to “Cross Train Your Brain.” The science was perhaps somewhat equivocal when the line was launched (I’m being generous), but it has become increasingly less so with each new study. It will be interesting to see if profitability trumps intellectual honesty for puzzle manufacturers going forward. Recent legal decisions have slapped down the most egregiously deceptive ‘brain health’ claims (e.g. Lumosity). I can only assume this has industry-wide after-effects.

Qwik-Sane, with custom outer cardboard ‘frame’ by vintage puzzle surgeon Amanda.
Sorry, that was an unplanned digression. A blog goes where it will (Ed - I particularly enjoyed the meander off territory). I should mention that I have no intention of impinging the honour of one of puzzling’s most successful and profitable companies. I actually love Thinkfun’s products and I own a good many of them. Later in this post I will even review one of them (I think I just heard my editor fall out of his chair; this will be another Puzzlemad first, if I’m not mistaken (Ed - OUCH! That hurt!)). But let’s get back to the puzzle at hand, for goodness sake. As mentioned, Qwik-Sane came from the mind of James R. O’Neil. Not much is known about Mr. O’Neil. We do know that he held a number of patents for games, see here and here. And we also know that he invented Qwik-Sane sometime after his retirement from the U.S. Department of the Treasury, probably in the late 1950s or very early 1960s.
Cool vintage literature. Old puzzles are like time-capsules.

WFF’N PROOF offerings (including Qwik-Sane) from an ad in a 1978 issue of Popular Science.
Qwik-Sane rules.
Although Qwik-Sane is in some respects a straightforward slider, it is also somewhat different from the vintage sliders I discussed earlier. The puzzle consists of 9 lettered, one-unit-square blocks (unique except for two Hs), 1 two-unit rectangular block, 1 three-unit rectangular block, 1 square block with an image of Auguste Rodin’s “The Thinker,” and finally 1 square place-holder block numbered “35.” The 35 block indicates the number of moves (ideally) it takes to solve the puzzle. The starting layout of the puzzle is as shown in the figure. After removing the “35” block, the objective is to transport the “thinker” from the upper right to the lower left (instructions are to remove “35,” put thinker in upper right, then maneuver it to lower left). Unlike many early sliders where the final position for most blocks is arbitrary and only a target block is moved to a required solved position, in Qwik-Sane all the blocks except the two H’s are uniquely marked and have required positions. Not only must your traveling block reach its destination, all the other blocks must be returned to their original positions. I don’t know the sliding block class well enough to know if this is was innovative in the 1960s, but it certainly enhances the solving process and puts the puzzle a cut above most of the other sliders I’ve played with. It bears a certain similarity to the Time puzzle, which I also enjoyed immensely. There is not just a pathway to the solution, but a system of movement to be discovered. Kevin, take note—this is your kind of slider. Think of it as a two-dimensional twisty if that helps. (Ed - You've convinced me! I have been looking out for a copy of the Time puzzle but not found one yet - I have managed to find something similar and modern which I will show off at the end of the post).

With a 35-move shortest solution, Qwik-Sane provides plenty of challenge. I didn’t count my moves, but it couldn’t have been more than 50. That sounds like a lot, but they go by quickly. Fortunately, this layout does not send you down long dead end pathways like some of the more difficult sliders. My approach was to get the thinker to his required spot first, then reconstruct the lettering without disturbing him any more than necessary. There were some set-backs, but it was enjoyable working out the proper moves. This puzzle certainly has replay value. Wait a week and you will probably have to figure it out all over again, though the moves will likely get more ingrained the more you play. Since I have to give this copy of Qwik-Sane back to Amanda, there is no danger of that happening to me.

Qwik-Sane is a great example of mid-century American puzzle design and it seems to have enjoyed a very wide and long-lived distribution. There is even a copy in the collections of the Smithsonian’s National Museum of American History. They provide a nice write-up, from which I have drawn liberally. Vintage Qwik-Sane puzzles are widely available on ebay and other second-hand sites, usually very cheaply. I was also shocked and pleased to find, as mentioned above, that Qwik-Sane is still being sold by the original makers. You should probably get your puzzle from the source, unless you prefer true vintage (a real collector would get both). Check out the offerings of the Accelerated Learning Foundation and also read about president, founder, and WFF’N PROOF inventor Layman Allen. It’s a small off-shoot chapter in puzzle history (they are more into games than puzzles, truth be told), but certainly worth knowing about.

A long-lived puzzle that holds up well.

For the second half of the post, we now shift gears to a radically different type of sequential movement puzzle—Vesa Timonen’s Solitaire Chess. Followers of the major puzzle blogs will recognize immediately that I have veered into a corner of puzzle blogdom very competently covered by Gabriel Fernandez’s great blog (Ed - I agree. It's a MUST read blog). Gabriel is the only blogger who consistently reviews the wide array of commercially available, off-the-shelf puzzles available today. When I am in a store agonizing over which Smartgames, Thinkfun, or Brainwright puzzle to buy next (on any given Sunday), I eventually get out my phone and check his reviews. They are invariably well written and informative - in short, a huge help. (Ed - one reason I don't review these is because they do not seem to be easily available in the UK, even on Amazon UK)

Gabriel has, of course, already reviewed Solitaire Chess. So why retread old ground? Well, Gabriel’s review dates to 2012, and while still perfectly serviceable in all respects, Thinkfun has since repackaged and reissued Solitaire Chess as part of their Brain Fitness line which I good-naturedly derided above. This review is meant as a kind of update to Gabriel’s review. Also, you can never have too many perspectives on a classic puzzle. Sure, it’s only been around since 2006, and history will be the final judge, but I have no hesitation dubbing it a “modern” classic.

Vesa Timonen’s Solitaire Chess; Brain Fitness version by Thinkfun.
I’m going to assume you’ve read Gabriel’s review before embarking on this one, so you already know that Solitaire Chess is the invention of Vesa Timonen. No need to go into Vesa’s credentials, we all know them well enough. I will just say, for the record, that he is one of my favorite designers. For his puzzles, of course, but also for his design philosophy. You can find a great interview with Vesa over here which provides some insight into his process and approach. You’ll learn that not only did he invent solitaire chess conceptually, he had to develop the software that generates the many individual puzzle challenges. The whole process took about a year and half. Time well spent I’d say. Even out here in Hawaii I know of three stores within easy driving distance where I can pick up Solitaire Chess. A great design combined with Thinkfun’s extraordinary distribution network, it has become a fantastically successful puzzle, arguably in the league of Nob Yoshigahara’s Rush hour, if I may be so bold.

Let’s review the puzzle just a bit, as a refresher. It’s simple really, like all great puzzles. Solitaire Chess consists of a 4 x 4 unit chess board upon which are arranged a number of standard chess pieces according to a “challenge” layout. Pieces move according to standard chess movement rules. Pawns may only move ‘up’ the board. There is no castling, en passant, or pawn promotion, just basic movement. To solve the layout, one must perform a continuous series of captures until only one piece is remaining. All moves must result in a capture. That’s not too complicated and you can get a good feel for it after just a couple tries. Layouts for the game range from the almost trivial to some true stumpers. Since you’ve already read Gabriel’s review (and its comments section), you know that accomplished puzzler George Bell found the challenges too simple and, well, unchallenging. If you are especially adept at chess (Ed - I am truly awful at chess!), that may well be the case for you. Certainly the beginner and intermediate challenges are not overly tough. However, I found myself well and truly stymied by a number of the expert level layouts. A few of them were multi-session affairs. I think most people will find this puzzle a challenge from mid-level onwards. My own experience was very much in line with Gabriel’s, right down to the solve times. Moreover, I found it to have that indefinable “fun” quality that is the hallmark of most Thinkfun puzzles. In short, I enjoyed Solitaire Chess immensely. I agree wholeheartedly with Gabriel’s assessment that it is “one of the best puzzle/games from Thinkfun and also from the genre.”

A nice warm-up challenge.
Why is this puzzle so brilliant? Well, for starters, because it has almost nothing to do with chess, other than the movement rules. Once you take away the concepts of opposed advancing forces, an opponent intellect, attack, defense, check-mate, ect., you are left with precious little resembling chess. Just the movement rules, now combined with the classic peg solitaire ‘clear the board’ objective. Conceptually, Vesa’s solitaire game could have been designed with any movement rules one wished to concoct. But imagine trying to market a puzzle to the general public with new abstract movement rules for 6 different pieces. A tough sell, I would think. But Solitaire Chess has no such worries. Most people already know the basics of chess, at least in passing. That is to say, ‘most people’ who would peruse a store’s puzzle section. Such puzzle nerds (Puzzlemad editorial staff included) have a high probability of knowing more than a little about chess. (Ed - I know I'm crap!)

It’s no spoiler to note that the knight, with its unique L movement, does the lion’s share of work at the higher levels. The knight’s interaction with the other pieces allow this puzzle to achieve some very challenging configurations. The rooks and bishop’s certainly traverse the board in interesting ways and are not to be underestimated. Perhaps the biggest surprise was the central role of the humble pawn in several of the higher-level layouts, often far in excess of its station. Although the pawn has very limited movement, it has the ability to linger outside of the main action and is consequently difficult to ‘get to.’ You’ll understand when you play. Another surprise was the role that the king and queen play in this puzzle. They figure prominently in the earlier challenges but become increasingly rare at the higher levels. I think this is due to their high latitude of movement. The queen can usually muscle her way through any layout and sweep the board. The king less so, but ultimately its rôle in a solution was simpler for me to intuit. Importantly, the king must be the final piece on the board whenever it is present in a layout.

Something a little more challenging.
Part of the excuse for this review was the reissuance of the puzzle in the years following Gabriel’s initial treatment. At present, you can purchase either the original version or the new Brain Fitness version. I have the latter. You can also download a mobile Solitaire Chess app (iOS UKiOS US, Android) from Thinkfun for $2.99 for play anywhere, anywhen. There seem to have been other apps around, but my quick and dirty google search produced mostly dead links. Although my preference is always for a physical puzzle, it is worth noting that Thinkfun provide 400 electronic challenges for your $2.99 purchase. Buying the physical puzzle will run you $20 US and you get either 60 (original) or 80 (Braintrain) challenges. The superior value of the electronic version is clear. Better yet, just go to the Thinkfun website and play for free! I don’t know how many challenges they provide, but it’s a good option if you are sitting on the fence.

But back to the physical puzzles. This is a mechanical puzzle blog, after all, and I can only push my editor’s patience so much per post (Ed - you've been so good to me that you have a LOT of leeway). Depending on the store you go to, you will see either the original version (as reviewed by Gabriel) or the new Brain Fitness version. The original follows Thinkfun’s early approach (now fading) of providing an entirely self-contained puzzle. The puzzle itself doubles as a box that contains all the pieces and the challenge cards. This is handy and I normally favor this approach. It’s neat and tidy. That said, I must admit that I prefer the Brain Fitness version, which comes in a slick cardboard box that is clearly labeled for an adult audience. No exuberant cartoon characters or exclamation points on this one. The game is played directly on the challenge cards, which are strung on a smoothly turning spiral binder. There are two reasons I like this construction. First, setup is faster. If you’ve played any of these modern multi-challenge puzzles at all, you’ll know that the set-up phase can quickly become a tedious chore. In the original version, you have to slide a card under the transparent play surface and then set up the pieces. Then remove it and begin again, etc. I know it doesn’t sound terrible, but by layout 40 you’ll wish there was a better way. I think the Brain Fitness version is more efficient in this respect - just flip the card and throw down the pieces. The second reason I like it has to do with piece movement, or lack thereof. The plastic play surface of the original has circular indents that hold the chess pieces in position, but also prevent sliding them around. This goes against the grain for anyone who has actually played chess. I prefer my pieces to slide across the board. The hard glossy cardstock challenge cards in the Brain Fitness version provide a great surface. Overall, I prefer the newer version for its ease of play and manipulation. It also has 20 more challenges than the original, so there is that too. Price-wise, they are about the same.

Now that all sounds like a good plug for Thinkfun, and surely they deserve your puzzle dollar, but you actually do not need to pay anything to take a stab at this puzzle. Everyone has access to a chess set (at least in this audience) (Ed - I am ashamed to admit that I don't own a chess set because I am so bad at it and Mrs S doesn't play either) and everyone can make a 4 x 4 grid with paper and pencil. All you are missing, and what Vesa has worked so hard to generate, are the challenges. Luckily for us, Thinkfun at one point offered a set of 40 free solitaire chess challenges. I don’t know when or where this happened, but the internet is forever and the pdf pops up in a number of places around the web. I imagine Thinkfun would prefer to sell puzzles, not give them away. But knowing that the leadership at Thinkfun have a strong relationship with the avocational puzzle community, I believe they won’t begrudge us a little fun at their expense. They are rich beyond all imagination, I assure you. That said, I recommend you click here for the extra challenges before the lawyers, Interpol, and/or Mr Timonen break down Kevin’s door and haul him away (Ed - too late!!! The men in white coats have got me). For those of you like me who are happy to purchase a copy of Thinkfun’s very well-made puzzle, these extra challenges simply provide additional value and fun. With the sole exception of challenge 9F, which is equivalent to Brain Fitness challenge #26, they are all new challenges (I went to the trouble of checking them all for you. Just one of the many services we here at Puzzlemad provide.). They probably come from the 400 challenges in the electronic game, I imagine. I don’t think they come from the original version, but maybe Gabriel or someone can check on that and let us know.

That’s it for this post. Thanks for tuning in and congratulations on making it all the way to the end. Hopefully it was worthwhile and, like all Puzzlemad posts, will help separate you from your money. Happy puzzling!

Thank you so so much Mike. That was a very enjoyable read and may even stimulate me to buy the puzzles, or a chess set or.....having surfed the web for nice chess sets I am very tempted to buy a beautiful Backgammon set - I am a not bad player but only have a small travel set not something of beauty for the living room! Hopefully when I am back at work I will get some time to solve some of my backlog of new puzzles!

In the meantime here is the version of the Time puzzle I got hold of. My version is from Ton Delsing and bought courtesy of Wil Stijbos:


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