May I ask how the second step of the third order Rubik s Cube is to restore the middle layer? It s d

Restore layer 2.

First put the edge of the 3rd layer on the center block of the corresponding color, if you need to put the upper edge on the right side of the center block, use Formula 1, if you need to put it on the left side of Equation 2, if you need to put the edge on the 2nd layer, use Formula 1 or Formula 2, and move it to the 3rd layer.

Use the corresponding formula to restore, if you need to move the second layer of edges from the left to the right or right to the left of the center block, and use Equation 3 for the center block to the right

Formula 1: Up, Right, Up, Up, Right, Up, Up, Forward, Up, Front.

Formula 2: Up, Left, Up, Left, Up, Forward, Up, Forward, Forward.

Equation 3: Right 2, Top 2, Right 2, Top 2, Right 2

First of all, your bottom recovery is not right, pay attention:

And then: <>

Put that piece on the right-hand side, and then go down left down left down right top right top right top and you're good to go.

There are four simplest formulas for restoring the top level.

Top cross formula: f r u r u f

Top surface flattening formula: r u2 r u r u r top perimeter adjustment formula: x'(r u'r) d2 (r'u r) d2 r2

Final Restoration Formula: (Triangular Swap) (R u.)' r) u (r u r u') r' u' r2)

I played the Rubik's Cube a few years ago, and now I still retain the restoration method of the Rubik's Cube, and I tried it again recently, but I didn't expect to remember it.

Draw a cross on the top floor: r'u'f'UFR, fish-shaped: (1):

r'u'ru'r'u2'r(2):rur'uru2r', restored: lf'lb2l'flb2l2, restore the **:of the last layer of the third-order Rubik's cube

<> third-order Rubik's Cube: The third-order Rubik's cube is currently the most common type of Rubik's cube, which was invented in 1974 by Professor Erno Rubick of the Budapest School of Architecture in Hungary. The official English name of the third-order Rubik's Cube is rubik'S Cube is named after Professor Ernno Rubik.

He invented the Rubik's Cube only as a teaching tool to help students enhance their spatial thinking skills.

Play the color of the first layer consistently, and make the color of the side of the first layer the same as the color of the side of the Rubik's Cube 4.

The second level of formulas: upward straight - right straight - upward reverse - right reverse - upward reverse - forward reverse - upward straight - forward straight.

The third level of the formula (starting cross): right reverse - upward reverse - forward reverse - upward straight - forward straight - right straight.

The third layer of the formula (four-corner block): right shun - upward shun - right reverse - upper shun - upper shun 180° - right shun - right inverse.

The third level of the formula (also four corners): right straight - upward - right reverse - upward reverse - right reverse - forward - right straight 18° - upward reverse - right reverse - upper reverse - right straight - right reverse - forward reversal.

The third level of formula (also center): right straight - upward reverse - right straight - right straight - right straight - down reverse - right reverse - up reverse - right 180 ° note! : Forward: Ninety degrees clockwise Reversed: Ninety degrees counterclockwise.

The steps of the top-level restoration of the third-order Rubik's Cube mainly include three stages: bottom reduction, middle layer reduction and top surface reduction, and the following is a detailed step-by-step description of the process.

First, the bottom surface restoration

1.Step 1: Restore the cross. Return the white center to position and pair the four adjacent pieces to form a white cross.

2.Step 2: Restore the white corners. Take the red corner placed in the middle of the left side of the front to the top of the old reduction layer, and rotate it according to the formula to return the edge block, and by the way, the other corners of the reduction cross are also in place.

Second, the middle layer of restoration

1.Step 1: Find the virtual block. Place the edge block that is not in the correct position on the right and find the dotted block.

2.Step 2: Place the virtual block on the right side. By rotating the realm, move the virtual block to the right.

3.Step 3: Turn the formula. Execute the rotation formula to return the blue edge block to the top layer and move the red corner placed on the top layer on the left to the top layer.

4.Step 4: Using the same formula, move another edge block that is not in the correct position to the right for processing.

5.Step 5: Homing. This is done by rotating the Ascending Domain of the Leader Brigade to the edges and corners of the layer, and then the entire restoration is done in this way.

Third, the top surface restoration

1.Step 1: Adjust the corner blocks to the correct position. Move the corners that are not placed right back to the correct position by means of formulas and removal of rotation recovery. This is the hardest step.

2.Step 2: Move the edge block that does not belong to the layer to the bottom, then move it to another location to return the target edge block.

3.Step 3: Determine whether the restoration is completed, and if not, try repeatedly until the top layer completes the restoration.

4. Expand your knowledge

In addition to the above-mentioned restoration methods, there are other methods that can be used to restore the Rubik's Cube.

Such as CFOP method (cross - bottom two layers - the last layer of the face), ROUX method (two bottom layers - two top layers - one bottom layer) and ZZ method, etc. More practice and experience are required in the use of different methods and algorithms, and at the same time, you need to choose according to your own situation and preferences.

The third layer formula of the Rubik's Cube:

Starting cross: right reverse - upward reverse - forward reverse - upward shun - forward straight - right straight.

Four corner blocks: right Shun - Shang Shun - Right Reverse - Shang Shun - Shang Shun 180 ° - Right Shun - Right Reverse.

Also four corners: right straight - up - right reverse - up reverse - right reverse - forward - right straight 18 ° - up reverse - right reverse - up reverse - right straight - right reverse - forward reversed.

Also center: right Shun - Upward Shun - Right Shun - Upper Shun - Right Shun - Upper Shun - Right Shun - Lower Reverse - Shirt Take Right Reverse - Upper Reverse - Right 180°

Rubik's cube) in a narrow sense, refers to the third-order Rubik's cube. The third-order Rubik's Cube is usually in the shape of a cube and is made of elastic hard plastic on the sides.

There are many restoration methods of the third-order Rubik's Cube: layer first method, corner first method, edge first method, bridge method, CFOP, CFOOP, smiling tiger method, etc.

Most beginners choose the layer-first method, which is characterized by few formulas that are easy to understand, and the third-order Rubik's Cube "layer-first method" is restored in six stages:

The first stage: the top layer of the cross, restore the top layer of the edge.

The second stage: restore the top layer corner block.

The third stage: restore the middle layer of the edges.

The fourth stage: the bottom layer of the cross, restore the bottom edge.

Stage 5: Flip the bottom corner blocks to align the bottom colors.

Stage 6: Adjust the position of the bottom corner block and complete the restoration.