7x7 parity algorithms pdf

The Fisher Cube. The Fisher Cube is one of the best known 3x3 shape modifications in existence. Invented and named after by famous puzzle inventor Tony Fisher.It was invented sometime during the 80s, inspired by the original Rubik’s Cube.The puzzle has a very similar solving method to a 3x3, so make sure you can solve that using at least the beginner’s …

Edges -Solve first eight freestyle by making big edges of 5 identical pieces and store 4 in U face and 4 in D face. -Fix up centers -Make 3 inner edges (Like a 5x5) of the 7x7 edges for the last 4 whole edges. -Finish off the last 4 edges by solving them like reduced 5x5 edges. Dec 10, 2008.This research investigates the reduced complexity decoding algorithms of LDPC codes and turbo codes and proposes the normalized APP-based algorithm, which is even more simplified yet still can achieve the near optimum performance. Iterative decoding techniques have been receiving more and more attentions with the invention of turbo codes and the rediscovery of low-density parity-check (LDPC ...Overall, I found the 7X7 to be roughly the same as the 5X5. The parody is solved the same, except that you sometimes need to turn more parts than in a 5X5. But if you understand the 5X5 it shouldn’t be too difficult to figure it out. Oddly, the most difficult part of solving the 7X7 for me was doing the centres.4x4 PLL Parity Algorithms. When you are solving a 4x4, PLL parity can significantly slow down a solve. Luckily, there are some tricks you can use to minimize the damage without learning too mamny new algorithms. Some algorithms in this set are similar to PLL algorithms you already know, except there is a parity algorithm mixed in.We would like to show you a description here but the site won’t allow us.Abstract. Parity games are 2-player games of perfect information and infinite duration that have important applications in automata theory and decision procedures (validity as well as model ...

Rubik's cube solving. This page explains how to solve a 6x6x6 cube. Every cube of higher order than 3x3x3 involves reducing the cube to a 3x3x3 cube, and then. solving for that. The even cubes are initially easy to solve, but you'll potentially encounter parity problems. you'll have to fix. For the 6x6x6 there are 6 possible parity problem states.#7x7Lasttwoedge #7x7lasttwoedgeparity #7x7last2edgesEasy way how to pair 7x7 last two edges. 7x7 last two edge solve. 7x7 last two edge solution. 7x7 last tw...Step 2: Orienting the last layer pieces. Flip the cube upside down (the solved layer should be on the bottom now). In this step the goal is to orient the last layer pieces. The result should be that the opposite color to the color we started with will be completed (In our case: the opposite color to yellow is white).Edges -Solve first eight freestyle by making big edges of 5 identical pieces and store 4 in U face and 4 in D face. -Fix up centers -Make 3 inner edges (Like a 5x5) of the 7x7 edges for the last 4 whole edges. -Finish off the last 4 edges by solving them like reduced 5x5 edges. Dec 10, 2008.Before You assemble the Rubik's Cube 7x7, learn how to assemble the classic 3x3 cube , since the 7x7 cube assembly consists of the same algorithms as the 3x3, but supplemented by several new formulas. …

2. WCA. 2015LAIS01. YouTube. Visit Channel. Backing this up with a bit of theory: Offsetting 4 centre caps by 90 degrees will make you solve 4 edges offset by 90 degrees, in a 4-cycle manner, and a 4 cycle is an odd number of piece swaps, which cannot happen in an odd cube, so 1 more extra swap will show up as the PLL parity. Void cube parity ...3x3 OLL Algorithms. 3x3 PLL Algorithms. 4x4 OLL Parity Algorithms. 4x4 PLL Parity Algorithms. Notation. 3x3 Notation. 4x4 Notation. Pyraminx Notation. Megaminx Notation.The Megaminx. The Megaminx, previously called as Hungarian Supernova was patented by Uwe Mèffert.It is a dodecahedron-shaped face-turning twisty puzzle which is very similar to the classic Rubik's Cube.The solution is almost the same, just a few new algorithms come in when you reach the last layer, so if you're familiar with the classic 3x3x3 Cube then you won't have problems solving the ...No Parity Cases Algorithm here Alternative algorithm here Rw' U' R' U (R' F R F') Rw ... Round brackets are used to segment algorithms to assist memorisation and ...We would like to show you a description here but the site won't allow us.Download full-text PDF. Read full-text. ... 7x7 . 1 . 0.6939 . 24.9796 . 3.1694 . 1.2429 ... This paper introduces a new color image encryption algorithm based on a hyperchaotic six-dimensional ...

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Welcome to the 6x6 and 7x7 tutorials on CubeSkills! In this module I will show you how to apply the reduction method to the 6x6 and the 7x7 cubes. Before watching this module you should already be comfortable with using the reduction method to solve the 4x4 and 5x5 cube. Back to Big Cube Videos 0 % COMPLETE 9 LESSONS.One easy way to fix the centres is this: Hold the cube so that one of the swapped edges is along the UF edge. Let's call the inner slice containing that edge the r slice. Do the move sequence r U2 r U2 r U2 r U2 r. This returns the centres but still does an odd permutation on the edge pieces. You now still have to fix the edges with …Mastermorphix Last Layer Guide Arranged by Andy Klise Single Color Orient Edges F U R U' R' F' F R U R' U' F' Permute Corners Swap 39 – (R U')(L' U) R' U' L U'Solving it, however, is not very different to any high-order Rubik's Cube with the reduction method: group the 5x5 centers, group the 5x1 edges, and solve like a regular 3x3x3 Rubik's Cube (accounting for parity cases). The official record for solving the 7x7x7 Puzzle Cube is 1:35.68 set by Max Park at the Marshall Cubing September 2022 ...Moreover, the encoding complexity reaches the theoretical lower bound, while the decoding complexity is also very close to the theoretical lower bound. With the proposed optimal encoding and decoding algorithms, the Liberation codes are very likely to be the best alternative for RAID-6 implementors. ACKNOWLEDGMENT.Parity is the few odd cases that you see on big cubes that are different than what you see on 3x3. There are 3 types of parities (OLL-edge flip, PLL-edge swa...

*DISCLAIMER* The first R in the algorithm should have been R’Sorry for the mixupSong- Back to the loungeArtist- Founder MusicBig Cube Tutorials. To watch this video you need to be a free member. By becoming a free member you'll be able to learn strategies used by two-time Rubik's Cube World …Solves for cubes odd number cubes higher then 5x5 (7x7, 9x9,...) can be solved by using the method for 5x5. You need to keep going from inside out. Try looking at those 5x5 cheat sheets again and apply them either moving the outer layer like in a 3x3, moving the two outer layers or moving the 3 outer layer only keeping the middle one still..This work shows how to solve the linear matroid parity problem as a sequence of matroid intersection problems, and shows the algorithm is comparable to the best running time for the LMPP and is far simpler and faster than the algorithm of Orlin and Vande Vate [10]. Consider a matrix with m rows and n pairs of columns. The linear matroid parity problem (LMPP) is to determine a maximum number of ...Creating your own algs: Cube Explorer: Cube explorer has been around for ages for creating algorithms. Solid choice. (3x3 only) Ksolve: Ksolve lets you create algs for everything else. Whocouldthat.be Sorts out 3x3x3 algorithms and also can ignore pre AUF and post AUF. Alg.cubing.net: You can use alg.cubing.net to check solutions/algs to make ...As one of the most common file formats in digital communication, knowing how to edit a PDF file is a great skill to have to make quick changes. Portable Document Format (PDF) is on...F U R U' R' F' [OLL Parity] L [Double Parity] U2 L'. [y2] F R U R' U' F' U [OLL Parity] small subset of all OLL + Parity and PLL + Parity cases. In each case, OLL Parity, PLL Parity, and Double Parity refer to executing the below algorithms: • Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw' • r2 U2 r2 Uw2 r2 Uw2 U2 • Rw2 B2 Rw ...Hold the cube so that the two centers you want to swap is in the top and front layers "U" and "F". Put the two centers that you want to swap in the same column by rotating the top "U" and front "F" layers. We recommend putting it to the right side of the cube. Move the column with the swapped centers up once. Move the top layer anti …It is described in the same patent as the V-Cube 6x6x6 (the patent describes designs as large as 11x11x11), and like that cube, it uses slightly rectangular cubes on the edges and larger square cubes at the corners (the 7x7x7 has continuous action, whereas the 6x6x6 has click stop action). The reduction to a Rubik 3x3x3 solution used for Rubik ...

No Parity Cases Algorithm here Alternative algorithm here Rw' U' R' U (R' F R F') Rw ... Round brackets are used to segment algorithms to assist memorisation and ...

An improved layered min-sum (ILMS) algorithm is proposed for the decoding of low-density parity-check (LDPC) codes and speeds up the decoding by slightly amplifying the message update from check node to variable node. In this paper, an improved layered min-sum (ILMS) algorithm is proposed for the decoding of low-density parity …6x6x6 V-Cube. This puzzle is a cube which is built from smaller cubes, 6 to an edge, i.e. a 6×6×6 cube. Like a Rubik's Cube each slice can rotate, which rearranges the small cubes on the surface of the puzzle. The six sides of the cube are coloured, so every corner piece shows three colours, every edge piece shows 2 colours, and every face ...493 algorithms Impossible to recognize which one to use Why do people do this to themselves ... (edge parity) Solving Rubik's Cubes Isn't That Hard, But People Are Really Good At It ... Records for other sizes: 2x2: 0.49 4x4: 17.42 5x5: 36.06 6x6: 1:13.82 7x7: 1:40.89...most of the time . Solving Rubik's Cubes Isn't That Hard, But People Are ...Edge Parity on a 5x5 occurs when you pair the last edges and one edge doesn't match. This is because the two "wings" need to be swapped. Perform this algorithm with the flipped edge piece in the front top position. Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 3Rw' U2 Rw U2 Rw' U2 Rw'. The solution above can be used for 4x4 up to …Step 2: Learn to drive. Focuses on controlling a vehicle in a variety of conditions, developing good habits and learning to recognise hazards. You must complete and record a minimum 25 hours of supervised driving in the pre-PDA section of …(This will also reset all info on the page, such as algorithms, times, etc.) Trash. Hide the cases you do not plan to learn. Click on an image to add it to the trash. Use the Shift key to select multiple cases. Settings; Show triggers (brackets) Move Learning cases up; Move Finished cases downOLL Parity Algorithm 1: This algorithm is the easiest to execute. It flips the two edge pieces as well as the corners. It also moves other edge pieces in the top layer. If your focus is speedsolving the 4x4 then this is the recommended algorithm. This should be done before you permutate the corners and edges of the last layer.Familiarize yourself with the common parity problems and their solutions. For both 6x6 and 7x7, you'll encounter cases where edges need to be flipped or swapped. Regularly drill these algorithms so you can execute them quickly using your muscle memory. You can also use a timer while drilling parity algorithms.To make a the superflip pattern on the 7x7 you follow the following series of moves: 1) Move the inner FIVE Layers clockwise (up) and the top layer (U) anticlockwise. Do both these steps 4 times. 2) Then rotate the whole cube along the X-axis clockwise and along the Y-axis clockwise. Repeat the above two steps 3 timesDownload the 7×7 Rubik's Cube Solution PDF here. This puzzle is a cube which is built from smaller cubes, 7 to an edge, i.e. a 7×7×7 cube. Like a Rubik's Cube each slice can rotate, which rearranges the small cubes on the surface of the puzzle. The six sides of the cube are coloured, so every corner piece shows three colours, every edge ...

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7x7 cube OLL parity algorithm (1) TikTok. 7x7 cube OLL parity algorithm (1) TikTok. 4.1 (89) · USD 9.43 · In stock. Description. Model available for download in Autodesk 3ds Max Visit CGTrader and browse more than million 3D models, including 3D print and real-time.This shows how to fix false parity on off cubes if you have had the centre caps off and are left with a 2 edge or 2 corner parity issue. This is not for the...Familiarize yourself with the common parity problems and their solutions. For both 6x6 and 7x7, you'll encounter cases where edges need to be flipped or swapped. Regularly drill these algorithms so you can execute them quickly using your muscle memory. You can also use a timer while drilling parity algorithms.4x4 Parity Algorithms - OLL & PLL Algs - How to solve a 4x4 rubiks cub - KewbzUK - Read online for free.Right (clockwise 90 degrees) 3. Solving edge-piece placement. 3. Solving Edge-Piece Placement. Use the following algorithm to place the edge pieces and to complete the second layer. The side of the cube with the edge piece that needs to be rotated is going to be your Front (F). These algorithms are for two separate cases.The company says it wants to prioritize "meaningful interactions" on its news feed. Facebook said it plans to alter its algorithm to favor content from friends and families over pu...Abstract. This paper proposes a new algorithm that improves the complexity bound for solving parity games. Our approach combines McNaughton's iterated fixed point algorithm with a preprocessing step, which is called prior to every recursive call. The preprocessing uses ranking functions similar to Jurdziński's, but with a restricted ...Mastermorphix Last Layer Guide Arranged by Andy Klise Single Color Orient Edges F U R U' R' F' F R U R' U' F' Permute Corners Swap 39 - (R U')(L' U) R' U' L U' ….

If 1 edge is unsolved at the end, hold it on the front/top and do the parity algorithm (6:26) Parity Algorithm: Rw U2 x Rw U2 Rw U2 3Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw' Note: if the top has all solved edges, then try turning the cube upside down. Note: for the last few edges, there may be no more unsolved pieces in the top or bottom. Each side has 3 tips, 3 edges and 3 centers. At a beginner level the puzzle is solved layer-by-layer in four steps: STEP 1 - SOLVE THE FIRST LAYER CENTERS AND TIPS. STEP 2 - SOLVE THE FIRST LAYER EDGES. STEP 3 - SOLVE THE SECOND LAYER CENTERS. STEP 4 - SOLVE THE LAST LAYER CENTERS AND TIP. Full Video tutorial below: This page explains how to solve a 7x7x7 cube. Every cube of higher order than 3x3x3 involves reducing the cube to a 3x3x3 cube, and then. solving for that. You'll potentially encounter parity problems you'll have to fix. Luckily, they are easier to. solve than the parity problems of the even cubes. Carrying out the parity trick. In the following interactive, the computer has a 7x7 grid of black and white cards. You must choose the colour of an extra card for each row (at the right) and column (at the bottom), making an 8x8 grid of cards. Each extra card should be chosen so that each row and column has an even number of black cards (since ...Mastermorphix Last Layer Guide Arranged by Andy Klise Single Color Orient Edges F U R U' R' F' F R U R' U' F' Permute Corners Swap 39 – (R U')(L' U) R' U' L U'Bar and Scatter. 6x6. -. 6x6 Last Two Centers. Rw' 3L F' Rw F 3L'. More Algorithms.gorithm classic(2) and its symmetrical. Algorithm classic(2) is also a Sledgehammer and therefore up to symmetries algorithms classic(1) and classic(2) are the same one. Figure 3: classic(2 ... In many cases some parity cases arises that have to be solved with speci c algorithms. These days, commercial Rubik's cube exist till the size ...pdf: Download PDF ... Download Approximation Algorithms PDF Description... Similar Free PDFs. Approximation Algorithms. 2001; Approximation and Online Algorithms. Pages; 2018; Handbook of Approximation Algorithms and Metaheuristics. 2007; Model Reduction and Approximation: Theory and Algorithms.Cases: 12. Ortega is an intermediate level of solving a 2x2. PBL algorithms are used to permute both layers simultaneously after the 2nd layer is orientated using the Ortega OLL algorithms. ADJ. R U R' U' R' F R2 U' R' U' R U R' F'. DIAG. F R U' R' U' R U R' F' R U R' U' R' F R F'. DIAG | DIAG. R2 F2 R2.Use the 4x4 OLL Parity Algorithm on your bigger cubes:Rw U2, X, Rw U2, Rw U2 , Rw' U2, Lw U2, Rw' U2, Rw U2, Rw' U2, Rw' 📦 GET YOUR CUBES FAST: https://www.... 7x7 parity algorithms pdf, For 64 bit numbers, we start xoring with 32 bit halves, then 16 bit halves, then 8, 4, 2, 1 respectively. Essentially, parity of a number means parity of xor of equal halves of the binary representation of that number. The crux of the algorithm is to concentrate on rightmost 32 bits first, then 16, 8, 4 , 2 , 1 bits & ignore other left side bits., Adobe's free PDF reader has long been a standard for handling its extremely popular document format, but you aren't limited to using it to view your PDF files. Let's take a look at..., How to Solve Last Two Centers in a 7x7 Rubik's Cube. this is actually really useful, thx! 136K subscribers in the Cubers community. For people who love any sort of twisty puzzles, including but not limited to: Rubik's Cubes (and any…., Sep 1, 2022 · 4x4 OLL Parity Algorithms. 4x4 parity occurs on the last layer of a 4x4, where you get a case that is impossible to get on a 3x3 so you need a specific algorithm to solve it. OLL parity specifically occurs because two adjacent edge pieces are flipped, but generally you can't recognize it until you are at the OLL stage of solving. , Visit Channel. Both the cubes are just 3x3 shape mods, so the solving is same as 3x3 solving, you can use Layer by layer method or CFOP. The only thing you have to sure of is to do center safe OLLs and PLLs, and be careful about how the centers are rotating when we are doing the first two layers., Algorithms for Last Two Edges. SpeedCubeDB. SpeedCubeDB. Cross Color. Related Sets L2E 1 5x5-Last Two Edges. Rw' U' R' U R' F R F' Rw ..., Algorithms for 6x6 Last Two Edges. SpeedCubeDB. SpeedCubeDB. Cross Color. Related Sets. Wing Parity 6x6-6x6 Last Two Edges. 2R' U2 2L F2 2L' F2 2R2 U2 2R U2 2R' U2 F2 2R2 F2 ... Middle Parity 6x6-6x6 Last Two Edges. 3R2 B2 U2 3L U2 3R' U2 3R U2 F2 3R F2 3L' B2 3R2 Movecount: 15 ETM 15 STM. Face Moves: 5GEN (U F B 3R 3L ..., Notation. 3x3 Notation. 4x4 Notation. Pyraminx Notation. Megaminx Notation. 4x4 Speed Cubes 5x5 Speed Cubes 6x6 Speed Cubes 7x7 Speed Cubes., Sep 1, 2022 · Sep 01, 2022. 1 comment. To make a the superflip pattern on the 7x7 you follow the following series of moves: 1) Move the inner FIVE Layers clockwise (up) and the top layer (U) anticlockwise. Do both these steps 4 times. 2) Then rotate the whole cube along the X-axis clockwise and along the Y-axis clockwise. Repeat the above two steps 3 times. , We introduce a new family of rank metric codes: Low Rank Parity Check codes (LRPC), for which we propose an efficient probabilistic decoding algorithm. This family of codes can be seen as the equivalent of classical LDPC codes for the rank metric. We then use these codes to design cryptosystems à la McEliece: more precisely we propose two schemes for key encapsulation mechanism (KEM) and ..., Oct 28, 2020. Messages. 72. YouTube. Visit Channel. In this video I solve the Gigaminx. This is one of my favorite Rubik's Cubes--mostly because of its size, but also because of its simplicity. If you know how to solve the 5x5x5 and the Megaminx, the Gigaminx will be no problem whatsoever! Feb 20, 2021., Rubik's Cube Algorithms. A Rubik's Cube algorithm is an operation on the puzzle which reorients its pieces in a certain way. Mathematically the Rubik's Cube is a permutation group: an ordered list, with 54 fields with 6*9 values (colours) on which we can apply operations (basic face rotations, cube turns and the combinations of these) which reorient the permutation group according to a pattern., Some useful algorithms/approaches for solving all PLL + Parity cases on even-layered cubes. Note that in some of the cases, an AUF (Adjustment of U Face) will be required between the PLL Parity Algorithm and a PLL algorithm. ... will be required between the PLL Parity Algorithm and a PLL algorithm. Toggle navigation. Tutorials . 3x3 Videos 3x3 ..., Easiest Way to Solve 7x7 Edge Parity. Video. Add a Comment. Sort by: JesseB342. • 3 yr. ago. There’s a much simpler alg that doesn’t result in twisted corners at the end. Orient as in the video, then do right piece (s) down, U2, left piece (s) down, F2, left piece (s) up, F2, right piece (s) x 2, U2, right piece (s) up, U2, right piece (s ... , whatsup guyzz..aj ki video mai aap sy baat krny waala hu 7x7 ki parity py.7x7 py 3 tarah ki parity aati hai1 he algorithm sy sikha du gamza ay gathanx4watching, You can see the algorithms written down at SpeedCubeReview.com/algorithmsSolve the final edges or "edge paraity" on any large cube 4x4, 5x5, 6x6, 7x7, 8x8, a..., The 7x7x7 cube (normally referred to as the 7x7x7 or 7x7) is a twistable puzzle in the shape of a cube that is cut six times along each of three axes. The first brand of this puzzle was the V-Cube 7, which was patented by its inventor, Panagiotis Verdes. Early on, many other cube companies produced puzzles very similar, but these were ..., 5x5 L2C Algorithms (Last Two Centers) Images sourced from Conrad Rider's VisualCube - http://cube.crider.co.uk/visualcube.php Algorithm Presentation Format, Oct 28, 2020. Messages. 72. YouTube. Visit Channel. In this video I solve the Gigaminx. This is one of my favorite Rubik's Cubes--mostly because of its size, but also because of its simplicity. If you know how to solve the 5x5x5 and the Megaminx, the Gigaminx will be no problem whatsoever! Feb 20, 2021., Familiarize yourself with the common parity problems and their solutions. For both 6x6 and 7x7, you'll encounter cases where edges need to be flipped or swapped. Regularly drill these algorithms so you can execute them quickly using your muscle memory. You can also use a timer while drilling parity algorithms., Once you have mastered the basics and can solve the 7×7 Rubik’s Cube layer by layer, you may want to explore some advanced techniques to improve your solving time. This …, The 7x7 grid is enough for us to draw a Super Mario head. ~ The "Checkerboard" and the "Cube in cube" combined on a 9x9 cube. ~ We can make nice Rubik's Cube mosaics on a large 13x13x13 cube. RedKB explains in a YouTube video how to create a mosaic on each face of a big NxNxN cube. This is how the SuperFlip looks like on a 13x13x13 cube. ~, Download full-text PDF. Read full-text. ... 7x7 . 1 . 0.6939 . 24.9796 . 3.1694 . 1.2429 ... This paper introduces a new color image encryption algorithm based on a hyperchaotic six-dimensional ..., When learning about blockchain consensus algorithms and distributed systems in general, you will inevitably come across terms like FLP impossibility and Byzantine fault tolerance. ..., We would like to show you a description here but the site won’t allow us., Grab the edge of the front face and rotate it 90 degrees clockwise to perform a ¼ turn. At this point, 1 row of the green squares will now be visible of the right face of the cube. 3. Use a ½ clockwise turn whenever you see the number 2. Keep an eye out for algorithm shorthand that includes both numbers and letters., Know that there are many other good algorithms out there that can work better for you. I try to point you to those resources as best as I can across the app. I wanted the content to first, be optimized for all devices (desktop, mobile, android, apple ios iphone and ipad) and second, accessible offline so that we can get rid of messy paper cheat ..., All the algorithms below were performed with White on top and Green in front. Checker Board Pattern ... No PDF Downloads Available for this article. ... 3x3 F2L Algorithms; 3x3 OLL Algorithms; 3x3 PLL Algorithms; 4x4 OLL Parity Algorithms; 4x4 PLL Parity Algorithms; Notation. 3x3 Notation; 4x4 Notation; Pyraminx Notation; Megaminx Notation ..., OLL Parity Algorithm 1: This algorithm is the easiest to execute. It flips the two edge pieces as well as the corners. It also moves other edge pieces in the top layer. If your focus is speedsolving the 4x4 then this is the recommended algorithm. This should be done before you permutate the corners and edges of the last layer., (This will also reset all info on the page, such as algorithms, times, etc.) Trash. Hide the cases you do not plan to learn. Click on an image to add it to the trash. Use the Shift key to select multiple cases. Settings; Show triggers (brackets) Move Learning cases up; Move Finished cases down, Download full-text PDF. Read full-text. ... 7x7 . 1 . 0.6939 . 24.9796 . 3.1694 . 1.2429 ... This paper introduces a new color image encryption algorithm based on a hyperchaotic six-dimensional ..., Orientation of the Last Layer. OLL involves orienting all the edges and corners of the LL. It's the second-last step in the CFOP method. The numbering system is the same as on the Speedsolving wiki OLL page, and the nicknames are mostly made up by me. Speedcuber Sarah Strong's collection of Rubik's Cube algorithms., Learn how to solve the last layer of the Rubik's Cube faster with 2-Look PLL, a method that reduces the number of algorithms to memorize. J Perm provides clear and concise tutorials, videos and trainers for speedcubing beginners and experts.