Worksheet Solutions: 4x4 Rubik`s Cube | Solve Like a Pro: Rubik Cube Tutorials - Class 6 PDF Download

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Q1: In Step 1 of solving the 4x4 Rubik's Cube, the goal is to pair up 2 white center pieces to form a __________.
Ans: Bar
In Step 1, you create two white center bars by pairing up white center pieces.

Q2: To solve the yellow center in Step 2, you should hold the white center on the __________ and make a yellow center bar anywhere on the cube.
Ans: Bottom
When solving the yellow center in Step 2, you hold the white center on the bottom and create a yellow center bar.

Q3: Step 3 of solving the 4x4 Rubik's Cube involves completing 3 out of the 4 cross pieces in the correct color order, which is __________.
Ans: Blue, Orange, Green, Red (BOGR)
In Step 3, you complete three of the four cross pieces in the color order of Blue, Orange, Green, Red (BOGR).

Q4: To ensure that the white center is not destroyed while solving other parts, you may need to __________ it if necessary.
Ans: Fix
If the white center is disrupted, you need to fix it during the solving process to maintain its integrity.

Q5: In Step 2, when creating a yellow center bar, you should hold the white center on the __________.
Ans: Bottom
In Step 2, the white center should be held at the bottom while creating a yellow center bar.

Multiple Choice Questions

Q1: What is the primary objective of Step 4 in solving the 4x4 Rubik's Cube?
(a) Solve the entire cube
(b) Pair similar edge pieces
(c) Solve the white center
(d) Complete the cross
Ans: (b) Pair similar edge pieces
Step 4 focuses on pairing similar edge pieces in the 4x4 Rubik's Cube.

Q2: What is the significance of performing the flipping algorithm (R U R' F R' F' R) in Step 5 when solving the 4x4 Rubik's Cube?
(a) It solves the white cross
(b) It solves the yellow center
(c) It flips a white edged) It swaps U/F centers
Ans: (c) It flips a white edge
The flipping algorithm (R U R' F R' F' R) is used to flip a white edge in Step 5 of solving the 4x4 Rubik's Cube.

Q3: What is the main objective of Step 3 in solving the 4x4 Rubik's Cube?
(a) Solve the white cross
(b) Solve the yellow cross
(c) Complete three out of four cross pieces in the correct order
(d) Solve the entire cube
Ans: (c) Complete three out of four cross pieces in the correct order
Step 3 focuses on completing three out of four cross pieces in the correct order.

Q4: What is the primary goal of Step 4 in solving the 4x4 Rubik's Cube?
(a) Solve the entire cube
(b) Create center bars of any color
(c) Fix the centers after creating them
(d) Solve the edges
Ans: (b) Create center bars of any color
The main goal of Step 4 is to create center bars of any color on the 4x4 Rubik's Cube.

Q5: In Step 4, when you make another center bar of the same color, where should you place it to join them together?
(a) Left side
(b) Right side
(c) Top side
(d) Bottom side
Ans: (b) Right side
In Step 4, when making another center bar of the same color, you should place it on the right side to join them together.

True and False

Q1: True or False: OLL Parity is a situation where you have a flipped edge that is impossible on a 3x3 Rubik's Cube.
Ans: True
True. OLL Parity is a situation unique to the 4x4 Rubik's Cube, where you have a flipped edge that cannot occur on a 3x3 cube.

Q2: True or False: In Step 6, you can solve the 4x4 Rubik's Cube mostly like a 3x3, but you may encounter parity cases.
Ans: True
True. In Step 6, the 4x4 Rubik's Cube is mostly solved like a 3x3, but you may encounter parity cases such as OLL Parity.

Q3: True or False: In Step 5 of solving the 4x4 Rubik's Cube, you should only turn the outer layers and solve it like a 3x3.
Ans: True
True. In Step 5, you should only turn the outer layers and solve the 4x4 Rubik's Cube like a 3x3, treating it as if it has corner pieces, edge pieces, and center pieces.

Q4: True or False: OLL Parity occurs when you have a flipped edge, which is impossible on a 3x3 Rubik's Cube.
Ans: True
True. OLL Parity is a situation unique to the 4x4 Rubik's Cube, where you have a flipped edge that cannot occur on a 3x3 cube.

Q5: True or False: In Step 6, you can solve the 4x4 Rubik's Cube like a 3x3 without any additional challenges.
Ans: False
False. While Step 6 involves solving the 4x4 Rubik's Cube like a 3x3, there are additional challenges, such as OLL Parity and potential issues with incorrect centers.

Short Answer Questions

Q1: Explain the main objective of Step 2 in solving the 4x4 Rubik's Cube.
Ans: The main objective of Step 2 is to solve the yellow center. To do this, you create a yellow center bar on the cube while ensuring that the white center remains intact. If you destroy the white center, you should fix it during this step. The goal is to have a correctly positioned yellow center bar.

Q2: Describe the process of creating the partial white cross in Step 3 of solving the 4x4 Rubik's Cube.
Ans: In Step 3, you aim to complete three out of the four cross pieces in the correct color order (BOGR: Blue, Orange, Green, Red). To do this, you hold the white center on the left side and find two white edge pieces that have the same colors on them. Place one in the left slice layer and the other in the right slice layer. Join them together and add them to the cross. Repeat this process for a total of three cross pieces, following the BOGR color scheme, being careful not to destroy other cross pieces or the two solved centers.

Q3: Explain the importance of fixing centers when solving the 4x4 Rubik's Cube.
Ans: Fixing centers is crucial when solving the 4x4 Rubik's Cube because it ensures that the cube maintains its proper color scheme and that you don't introduce errors. Whenever you create a center bar, you should turn it to be vertical and be careful not to destroy the partial cross or other centers. If you have already completed any centers, you must fix them if they get disrupted during the solving process. This ensures that the cube remains solvable and follows the intended color scheme.

Q4: Describe the process of edge pairing in Step 5 of solving the 4x4 Rubik's Cube.
Ans: In Step 5, the goal is to pair similar edge pieces on the 4x4 Rubik's Cube. To do this, hold the cross on the bottom with the unsolved part at the front. Look for the last two white edge pieces and ensure that both are in either the top or bottom slice layers. If they are in different slices, join the pieces, replace them with an unsolved edge pair, and fix the centers. If they are in the same slice, slice piece 1 towards piece 2, flip piece 1 using the flipping algorithm, and fix the centers. Continue this process for other edge pairs, solving them one at a time.

Q5: Explain what OLL Parity is and how to fix it in the 4x4 Rubik's Cube.
Ans: OLL Parity is a situation unique to the 4x4 Rubik's Cube where you encounter a flipped edge that cannot occur on a 3x3 cube. To fix OLL Parity, perform the following algorithm: Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw'. This algorithm flips the front/top edge and resolves the parity situation. It's a common occurrence in solving the 4x4 cube, happening in approximately 50% of solves.

Q6: Explain what the term "centers" refers to in the context of solving the 4x4 Rubik's Cube and how to fix incorrect centers.
Ans: In the context of solving the 4x4 Rubik's Cube, "centers" refer to the central pieces of each face that determine the color scheme of the cube. To fix incorrect centers, you need to swap them to match the intended color scheme. There are two cases to consider:

• To swap the U/F (Upper/Front) centers, use the algorithm: Rw' F2 Rw2 U2 Rw'.
• To swap the U/D (Upper/Down) centers, use the algorithm: Rw2 U2 D2 Rw2.
• These algorithms help correct center orientation, ensuring that the cube follows the desired color scheme.

Q7: Explain the concept of OLL Parity in solving the 4x4 Rubik's Cube and provide the OLL Parity Algorithm.
Ans: OLL Parity is a situation in solving the 4x4 Rubik's Cube where you encounter a flipped edge, which is impossible on a 3x3 cube. To fix this, you can use the OLL Parity Algorithm: Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw'.

Q8: Describe the steps involved in solving the yellow center in Step 2 of solving the 4x4 Rubik's Cube.
Ans: In Step 2, to solve the yellow center, hold the white center on the bottom, and create a yellow center bar anywhere on the cube. If the yellow bar is not on the top face, move it onto the top by turning the necessary layers. Make another yellow bar, and then place it under the first bar to move it to the top. Ensure you fix the white center if it was disrupted during this process.

Q9: What is the primary goal of Step 5 in solving the 4x4 Rubik's Cube, and how do you handle edge pairing?
Ans: The primary goal of Step 5 is to solve the remaining parts of the cube using methods similar to a 3x3 Rubik's Cube. To handle edge pairing, you hold the cross on the bottom with the unsolved part at the front. Look for the last 2 white edge pieces. If one is in the bottom, move it to a different layer. Place both white pieces in the front/left and front/right without breaking the partial cross. Depending on the case, you either join the pieces, replace them with an unsolved edge pair, and fix the centers, or you slice one piece toward the other, flip one piece using the flipping algorithm, and fix the centers. Repeat this process for the remaining edge pairs.

Q10: Describe the process of solving the centers in Step 4 of solving the 4x4 Rubik's Cube.
Ans: In Step 4, to solve the centers on the 4x4 Rubik's Cube, you should follow these steps:

• Make 1 center bar of any color and turn it to be vertical.
• Be careful not to destroy the partial cross.
• If you have completed any other centers already, make sure to fix them anytime you break them, similar to fixing the white center when making the yellow center.
• Make another center bar of the same color. If this is the first center you've made, you can simply join them together. If other centers have already been made, put the 2 bars on the same side to join them. Repeat this process for the rest of the centers on the cube.