Puzzled 2: Zanchi 5

Thursday, August 10, 2017

The Results Are In

I discussed the 4 cubes I have recently and wondered if there is a better one out there that is quiet, smooth, and has easy color recognition in dim light. I even posed the question to my puzzling Facebook friends. I haven't gotten any feedback from them yet but as far as my 4 cubes go here is what I think this morning.

The Zanchi 5 Stickerless is the quietest, smoothest, colorifest cube.
The Rubik's Tiled is noisy and clunky, but the colors are good and for some reason in spite of the noise and clunkiness I like to use it.
The Dreampark is smooth but has that sometimes annoying spring sound. The colors are good in bright light but not in dim light.
The Duncan needs more trials before I decide if I prefer it over the Dreampark. I like the look and feel of the Dreampark better, but Duncan may have an edge in the sound category.

I don't know if I could do better than the Zanchi 5 Stickerless. It is for sure my favorite at this point.

Thursday, June 12, 2014

Puzzling With Annie in the Garden

We have been visiting our son, Raymond, and his family in the Czech Republic. About 30 or so puzzles accompanied us. :] All my puzzles have been solved at one time or another, but many had not been solved yet in 2014. That is a situation being remedied this summer. It is the Dayan Gem IV's turn today.

One of the puzzle highlights of the summer is an opportunity to show a local young man how to solve a cube. This week we talked about solving the first two layers. He had done so some years back but had forgotten how. Next week perhaps we can review the first two layers and go on to the last layer.

A daily puzzle delight has been puzzling with my 3-year old granddaughter. We have discussed the differences between a cube, a tetrahedron, a dodecahedron, an octahedron, a curvy kite hexahedron, and a truncated octahedron. :] She especially likes the gear puzzles, and is good at identifying which pieces still need solved on all the puzzles. Above she is completing her two-twist solve of the megaminx.

Besides puzzling we had a blast today going to the local zoo and then to a playground for a picnic. I was surprised to see a baseball field at the park. I didn't think Europeans played baseball. The zoo pictures are uploaded to my flickr page.

Rubik's Cube Books

I got my first Rubik's Cube in the early nineteen eighties. The only way I could solve it was to take it apart and put it back together solved. Until, that is, I got some little books that explained sequences of moves that could be used to put pieces where you want them without messing up what was already in place.

The Simple Solution To Rubik's Cube
by James G. Nourse
Notes on Rubik's Magic Cube
by David Singmaster
Solve That Crazy, Mixed-up Cube Puzzle
by Don Frederick.

I think I put together my own strategy using bits and pieces gleaned from all three books. Eventually I lost interest and forgot how to complete the cube, forgot I had those books, and lost track of the cubes.

Mark Jeays' Working Corner Method

http://jeays.net/rubiks.htm

In 2007 my interest in Rubik's Cube was rekindled when I watched the movie The Pursuit of Happyness. Marae found my 1980s cube for me and I tried to solve it. Huh-uh. I could do part of it, but not the last layer. Looking online I found various tutorials. Mark Jeays included YouTube videos with his Solution 2. This method worked for me and although I no longer use it in its entirety, nor could I, as I have forgotten the yellow edges sequences, I still find the basic working corner technique helpful, and use a slightly modified version of his corner twisting technique at times.

In the summer of 2014 we packed 30 or so puzzles and flew to visit Raymond and Fam in the Czech Republic. Breann, who had learned this method and no other, made some comment about bubururu or something like that, and it piqued my curiosity. What were those algorithms, and how similar are they to the EPS technique I use now when using a working corner? So I looked them up. Actually, the three algorithms were for dealing with the two last edges solved, which either needed to be swapped, or flipped, or swapped and flipped. The swapper is very similar to the one I have learned and used since, but I actually like it better in one sense, with a slight modification.

To swap UR and FR without flipping:

U' R U' R' U' R U' R' U'

To swap and flip UR and FR:

F' U' F U' F' U' F U2

To flip UR and FR:

F' U F U' R U' R' U

Will I actually learn and use these? Probably not. But I like them. :)

There is a slightly different implementation of the Working Corner Method. Arnaud van Galen calls it the Keyhole Method. I like his demonstration better than the one I originally learned. It just dawned on me why he is able to get away with doing it the way he does. He goes ahead and finishes the F2L before going to the last layer, unlike the way Jeays uses the working corner (keyhole) to also get the last layer. Since I no longer use the working corner to get the last layer, I should implement Arnaud's technique.

Jasmine's Scalable Method

http://peter.stillhq.com/jasmine/rubikscubesolution.html

This was the next method I learned. For awhile the idea of speed cubing appealed to me. This promised to be a good beginner's method for those that wanted to go on to faster method's later. Now that I know what I know, I wouldn't recommend this method if your goal is to be able to consistently solve the cube in less than 30 seconds. Rubik's Speedsolver Champion Leyan Lo presents a beginner's method that I like the looks of although I've never learned it. I have recently watched Arnaud van Galen's complete beginner's method video series and recommend them. Gilles Roux presents a beginners' method that is very close to one of my favorite ways of solving the cube. The simplicity and comprehensibility make this method a good place to start if you want to understand the Rubik's Cube. Also, if you are interested in speedcubing you should check out this YouTube video.

After trying for months to get under a minute with both Jasmine's Method and the Corner's First Method—and failing, I finally decided to quit trying and just enjoy cubing at a nice slow pace.

Don't get me wrong. Jasmine's Method has its merits. The sequences for orienting the last layer edges and corners, and permuting the last layer edges are still in my arsenal of useful algorithms.

Adam Cheyer's Corners First Method

Philip Marshall's Ultimate Solution

http://helm.lu/cube/MarshallPhilipp/
After learning to solve the cube corners first, what is next? An Edges First Method! This was a very difficult tutorial to follow, but once I got it, it was my favorite way to solve the cube for awhile. It uses only a few algorithms, and when you are finished solving the cube you feel like you've solved the puzzle, not just used memorized sequences to unscramble it.

Gilles Roux presents a beginners' method that could be used to solve the cube edges first. The simplicity and comprehensibility make this method a good place to start if you want to understand the Rubik's Cube. His technique is much easier to follow than Marshall's.