Sandfield's Secret Folding Hankie

This "puzzle" is one of the more unusual and unique (as well as pretty) Exchange Puzzles from my haul during IPP35 last year in Ottawa, Canada. The other which I thought also deserving of mention being Straight Up, reviewed a while back. 

Robert Sandfield's Secret Folding Hankie is parked under Slocum Classification 9; a "folding puzzle", and aptly so. The goal is to fold the handkerchief to reveal a secret image and a hidden message. The design of the Hankie is a joint effort by Robert, Perry McDaniel and Cindy Liang.

The handkerchief itself is printed on a square cloth of approximately 41cm x 41cm and the pattern includes the Canadian Maple leaf and squiggly scrawly lines along the edges, with swaths of red filling up the spaces in between.

As I played with the hankie, I was reminded of Mad Magazine's Fold-In on the inside back cover of each issue featuring those quirky, satirical and often humorous illustrations which dealt with current hot topics of the day. And this is exactly what I tried to do with Sandfield's Hankie...but of course to no avail. I tried various other ways of folding the Hankie in all directions including diagonally but somehow could not come up with the hidden message. 

Thankfully Robert included the solution instructions and I finally saw the words and images I needed to see. For the folded hankie solution click here - password - hankie.

A great and interesting puzzle concept and I hope there would be more of these in the future. For more information on secret folding handkerchiefs, Robert has also kindly provided the link to a reference site http://handkerchiefheroes.com/secret-love/. Another link which discusses vintage valentine puzzle handkerchiefs is here.

T4-III (Tea For 3) / Square In the Bag

Recently when Mineyuki Uyematsu (Mine) made available the T4 and Square-In-The-Bag puzzles, I hitched an order through puzzle designer Goh Pit Khiam to save on some shipping costs and ordered the T4-III and Square In The Bag.

T4-III (Tea For 3)

I had found Mine's T4-II (Tea For 2) pretty fun and challenging. Check out my review here.

Like the T4-II, the T4-III is a 3D packing puzzle and dimensionally the same size as its cousin, at 7.6cm square and 3cm tall. The box is walnut and the 4 pieces are Yellowheart and Purpleheart. Excellent construction and quality overall with good contrasting coloured woods used.

The object is to place all 4 pieces (T-shaped...hence the name!) inside the box. It would have been an easy puzzle if not for the fact that the box has an acrylic cover with a cut-out which the pieces have to go through.

As I already have experience solving the T4-II, I sort of knew how things would operate with the T4-III. It took me several minutes and I got all 4 pieces into the box. Compared with the T4-II, I would say the T4-III is more challenging. However, its not so unduly difficult that it would frustrate. You need to know how to orientate the pieces correctly first (outside of the box) to assess how they would fit inside and then figure which pieces to go inside first (yes, there is a proper sequence here).

Square In The Bag

Last year, I had the chance to borrow and play with Hirokazu Iwasawa's CorRECTly In The Bag, the rectangular version of the puzzle.  

What I have said in my review about CorRECTly In The Bag will be applicable here. Square In The Bag is offered in 3 versions, with the price differentials dependent on the quality and design of the cloth bag provided. The one in the photo is the most expensive of the three with a geometric pattern design and red inner lining.The wood square is a checkered design and both bag and square are beautifully made.

I already knew the solution so took me less than 30 seconds to solve this one. Square In The Bag is one of those puzzles that looks impossible to solve, yet when you solve it (or see the solution happening before your eyes), its incredible and the a-ha moment is really great!

For those living in Europe/USA, you may wish to contact UK based Satomi Beattie of CU-Japan for availability and order of these puzzles.

CorRECTly In The Bag

Update 23 October 2017 - Dear Reader, please check out my new puzzle blog and e-store at http://mechanical-puzzles.com

Name
CorRECTly In The Bag

Designer
Hirokazu Iwasawa

Manufacturer
Mineyuki Uyematsu. Not available currently.

Type & Classification
Put-Together; 3D assembly

Dimensions
Bag - 18.5cm (Length) x 7.8cm (width)
Rectangle - 12cm (Length) x 9 (width)

Materials & Construction
Bag is made of a high quality cloth adorned with a dragonfly motif with a red inner lining. The rectangle is cut from a cross-section of four different woods joined together giving it a very nice checker board finish.

IPP
CorRECTly In The Bag is a variation of Iwasawa's earlier design, the Square In The Bag which won the Puzzlers' Award at IPP32 in Washington, USA last year.

Overview

I like Hirokazu Iwasawa's puzzle designs very much and in fact own two of his metal puzzles, the Alcyl and Tritalon, both reviewed earlier in this blog. I also had the opporunity to meet him at IPP33 in Tokyo, Japan just this August where he was Chairman of the IPP33 Organising Committee.

This CorRECTly In The Bag was kindly loaned to me by puzzle collector Lee Yee Dian of Malaysia, who happened to be in Singapore recently. Yee Dian had come with Maki Kaji (the Godfather of Sudoku) who was in town to meet some of the local Mensa club members. It was at this Mensa gathering (no, I am not a member cos I am not that smart!) that I first handled the puzzle. Puzzle designer Goh Pit Khiam was also present and had a bash at the puzzle. At IPP33 I had missed out on buying the puzzle sold by Mineyuki Uyematsu which were all snapped up almost immediately once the Puzzle Party began.

The object of the puzzle is to cover fully the entire rectangle with the cloth bag, leaving no gaps. No force is needed, otherwise the cloth bag may tear. Impossible you might say...and this is what I though too when I first looked at the puzzle. It looked like an impossible object at first glance.

I fiddled with the puzzle for quite a while before stumbling on the solution. This is one of those puzzles that give you the A-ha rush feeling once you solve it. The bag can and does cover the whole rectangle; really quite amazing! Even a few of the Mensa members couldn't quite figure out the solution. And these are folks that have an IQ of above 148.

What was even more surprising was that when I got home and showed my wife the puzzle and asked her to try it, she solved it in under five minutes while I went to take a shower. When I got out of the bath, the rectangle was all covered up sitting on the coffee table, with my wife giving me that nonchalant "its-really-no-big-deal" look. Or is it because women know some things about fabric while we men don't. Maybe we puzzlers just think too much while puzzling, that's why some of us (like moi) take ages to solve puzzles, or worse still, need to refer to the solution.

Difficulty Level
Not unduly difficult but provides a very good challenge. Given enough time, however you will eventually figure it out.

Summary
Whether its the CorRECTly In The Bag or Square In The Bag, it really is a very clever design, using non-traditional materials. The very fact that it looks so innocuously simple and the solution is so elegant truly makes this a very unique and wonderful puzzle.

I have heard that people who can't get their hands on this puzzle have resorted to making it themselves. Not difficult I would imagine so long as you have the right dimensions (see mine above but don't blame me if it doesn't turn out right). Also, access to a good seamstress. And for the rectangle (which can be substituted with acrylic or some other easily obtainable material). You may want to contact fellow blogger Roxanne Wong who has blogged about the Square version and has the specs for you to self-make one.

Personally I am considering making myself one as well since I would have to return the puzzle to Yee Dian the next time we meet. Hmm...let me see, how about 6061 Aluminium for the rectangle and calf leather for the bag...now wouldn't that be quite cool!