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# JESSICA FRIDRICH METHOD PDF

Saturday, May 25, 2019

looked at me frawning and said with his mouth half open: "Yeah, so what's your system?" I answered with a big smile: "I use the Fridrich method. This advanced technique developed by Jessica Fridrich divides the puzzle into layers and you have to solve the cube layer by layer using algorithms in each. Algorithms of the 2nd part to orientate the right upper corner (well positioned). This method is called Fridrich Method, and also CFOP, because of the four.

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Advanced Method. This is full CFOP (or Fridrich) method. 'CFOP' refers to the steps involved - Cross, F2L, OLL and PLL. This involves remembering a lot. It is the key to solve the cube under 20 seconds or even 10 seconds if you really master the method. This method is named after its creator, Jessica Fridrich. There are many different methods for solving the Rubik's cube. .. the advanced method, check out Dan Knights' advanced solution and Jessica Fridrich's LL.

Then we'll return the corner back to the Upper face by doing R'.

## Rubik's Cube solution with advanced Fridrich (CFOP) method

The way to do it is by "moving" the edge piece one place right, to the R-U faces. For that we'll use the exact same technique as the previous position: We'll move the corner to the R-B-U faces by doing U', and then make an R turn taking the corner piece down, so it won't be affected by the U turn of the next move , then we'll do the U turn to reposition the edge piece where we want it, and make an R' turn to get the corner back up. Now the corner and edge pieces are completely paired and forms a block, all that left is to insert them into the slot by executing the first solving variation U2 R U' R'.

Note that also the following variations use the exact same technique: 4, 5, and 6. Case Example 3 This variation can be seen in first inspection a little bit harder for intuitive solution, however it is much easier than it looks! Here is how it goes: We'll pair up the edge and corner piece to a block, and solve it by the first solving position.

We'll have to flip the corner so the first-layer color white in our case will face to one of the sides, instead on facing top; then we'll pair up the corner with the edge piece to form a block. Lucky us, it's done simultaneously: We'll turn the U face until the edge piece side color will fit the center piece below it In our case this is red, and requires a single U turn , then we'll make an R turn so the edge piece goes temporary to the middle layer.

Now, we'll make a U2' turn to place the corner on top of the edge piece Pay attention: we have just paired them and created the block , and return the edge-corner block to the Upper face by doing R'. Interesting thing is that while returning the edge piece to the top we used it to both pair the piece and flip the corner. Now the block is ready to be solved to the slot by executing the first solving variation U R U' R' Note that also the following variations use the exact same technique: 20, 21 and In variations where the corner or edge piece or both of them is inside the slot, usually the approach is to get the piece out of the slot back to the U face, adjust the corner-edge pieces to one of the solving positions, and insert them into the slot correctly.

F2L algorithms page Now, take your time and learn how all the different variations of the F2L are being solved. Focus on understanding how it is done rather than learning the "algorithms". In this step I focused on learning the basics of F2L, however the F2L is the step with the biggest potential for time reduce and improvement, with lots of advanced techniques which I show in the Advance F2L page: Minimizing cube rotations re-gripping Taking advantage of empty slots Multi-slotting After you feel comfortable intuitively solving the F2L, read my advance F2L techniques page.

There are 57 different possible variations or combinations of the last layer pieces orientations Not including the fully solved variation. Therefore there are 57 different algorithms to learn to fully master the 1 look OLL.

The 2 look OLL requires knowing only 10 algorithms, which some of them you should already know from the Rubik's cube beginner's method. All edges will become oriented. When 2 adjacent edges are oriented: Use the P orientation algorithm.

Orienting the LL corner pieces: There are only 7 possible variations of corner orientations when all the edges are already oriented. All 7 cases and their algorithms are in the first table of the OLL Algorithms page.

The OLL step is the "least rewarding" step in a matter of learning algorithms, meaning that the transition from 2 look OLL to 1 look OLL requires additional 47 algorithms- yet rewards in "only" around seconds. Full OLL becomes more relevant in sub 20 second solving and under.

Keep in mind that the PLL algorithms 4th step are more important and it is better to fully learn them 21 total before going for the full OLL. Fast OLL solving is a matter of knowing the algorithms, and fast fingertricks.

Though it is important to work on your fast execution of these algs, most of the progress and time-reducing will happen in the F2L Such practice will improve your turning speed which will make also your OLL faster.

Recognition The algorithms are divided into sub-groups based on the shape they form on the U face e.

P shapes, T shapes and lightning bolts shapes , which makes it much easier to quickly recognize the variation and execute the right algorithm. OLL algorithms page There is absolutely no need to try and learn them all in once, just quickly review them and overview the different shapes and how to identify them.

It is advised to learn a new algorithm once a day or so depends how much time you spend solving the Rubik's cube a day:.

Make sure that you start with the 10 algorithms required for the 2 look OLL, only then progress to the rest. After learning the 2 look OLL algs, I would recommend just trying different algs and start with those easier for you to execute. The good news is that you already know 2 of them which used in the beginners methods step 7. Doing that will require knowing only 6 algorithms out of the 21 which the 2 algs you already know are part of them.

I cannot stress enough how important it is to continue and learn the full PLL, and use the 2 look PLL only as a temporary solution. Recognizing time can be longer than the execution, and it's done twice- which leads to x2 slower PLL solving time rather than the full PLL. Besides, most of the algorithms are relatively very easy and "finger-friendly". In the Aa-perm image above you can see that the 2 corners at the Back face are right corners see the blue headlights?

If on a given side face the 2 corner stickers show different colors — then the corners are not correctly permuted in relation to each other. Now: - If you found 2 adjacent right corners: rotate the cube or better- make a U turn so both corners will be on the B face, at the back of the cube.

Then execute the Aa-perm algorithm.

Once executed, all 4 corners will be correctly permuted. The angle of executing does not matter here. By executing this algorithm you had completely solved the Rubik's cube.

Recognition Recognizing the suitable variation and applying the right algorithm is a bit trickier than in the OLL step, since there are no clues on the U face it's already oriented. However, once you get it right, you'll be able to figure out the right algorithm in an inch of a second. PLL algorithms page Congratulations!

You know now how to speedsolve the Rubik's cube! It helps you to focus on unsolved faces, instead of focusing on the white face. It also avoids to flip the cube when the cross is finished, which will save time too. The aim is to perform the moves continuously and to have a good transition between each step.

Every second you do not rotate any face can be saved. It is possible that solving the cross on the bottom wastes time in the beginning but it will quickly make you improve. If it is too difficult for you, maybe you can try it later on But if you want to solve the cube under 20 seconds, that's a very important step.

Although the cases can be very different, some similar pattern often happen. I am going to give you a few techniques to solve these cases. I found all these cases intuitively, just with practice.

## Fridrich method : The fastest Rubik’s cube solution for 3x3x3

Memorizing them will save you time. After you're finished, just doing a D move or D' will align the cross with the faces. When the cross is prepared a half turn to the solved position, it is particularly easy because all you need is to focus on opposite colors. Once finished, a D2 move aligns the cross. While doing the last D move, you can start inspecting for the next step of the resolution.

These techniques are very helpful. It is now time to start practicing! Do not under-estimate the progress you can make by just looking at the cube and trying to figure out the cross. Sometimes you can even take a minute to think on how to solve the cross. Simulating moves mentally will help you for the next solves and you will become more and more familiar with efficient cross solving.