The tamale cube is divided into single-color and four-color. a. Single-color tamale restoration method

The first step, the corner blocks in place

Points: First, the four large corners of the same center block around (i.e., on the same side), at this time, the four small corners of the block in its bottom, and then R2, U that is

The second step, the center block direction adjustment (the order of the second step and the third step can be staggered)

①U-side, F-side, two center blocks at the same time to adjust the direction: (R U' R (U R U R) (U' R' U') p>

①U-side, F-side two center blocks at the same time to adjust the direction: (R U' R) (U R U R) (U' R' U')

② single center blocks to adjust the direction: (R U'R 'U') (F U F) (U' R 'U') (U' R 'U') (U' R 'U') (U' R 'U') (F F U') (U' R 'U') 'U')(F U F')

Step 3, T-block direction adjustment

③The two trapezoidal blocks above and below the U-plane (i.e., front and back) adjust the direction at the same time: (M U M U M U2)(M' U M ' U M')

④The two trapezoidal blocks on the right and front of the U-plane are adjusted at the same time: (R U R' U') × 2

B. Four-color dumplings restore method

The first step, the bottom cross (Cross)

Essentials: ①The same method as the third-order Rubik's Cube, do not care about the direction of the trapezoidal blocks (also known as prismatic blocks, side blocks)

②Pay attention to the large corner blocks at the same time, its direction also needs to be correct

Step 2: Reduce the second layer (F2L)

Essentials: ①Observe the second layer of the location of the center block, regardless of the direction, in order to determine the position of the four sides

(2) By the three-step method to put the trapezoidal blocks into position, regardless of direction

Step 3: Top corner blocks are put into position

①Counterclockwise triangular permutation: x' (R U'R) D2 (R' U R ) D2 R2

②Clockwise triangular permutation: x ' R2 D2 (R' U' R) D2 (R' U R')

③Diagonal exchange (while exchanging the left rear prism block): F(R U' R' U') (R U R' F') (R U R' U') (R ' F R F')

④Neighboring corner change (change left and right prisms at the same time): (R U R' U') (R' F) (R2 U' R' U' R U' R' F')

Step 4: Turn the color of the top corner

Essentials: the top corner to be turned over will be placed in the right and bottom position of the U-side, and this step can also be put into the fifth or the sixth step after the do it

1) the top corner turned clockwise 90 degrees formula: (R' D' R D) × 2 U' (R' D' R D) × 4 U

② counterclockwise to 90 degrees formula: (R' D ' R D) × 2 U (R' D' R D) × 4 U'

③ so that the two large corners of the U-plane at the same time to turn 90 degrees counterclockwise (in fact, the four corners at the same time to reverse 90 degrees):

(R' D ' R D) × 2 U (R' D' R D) × 2 U (R' D' R D) × 2 U2

④ Make the two large angles of the U-plane turn 90 degrees clockwise at the same time (in fact, the four angles are turned 90 degrees clockwise at the same time):

(R' D' R D)×2 U' (R' D' R D)×2 U' (R' D ' R D) × 2 U2

Step 5: Trapezoidal block return to position (position restored, regardless of direction)

① PLL counterclockwise trigonometric conversion formula: (R U' R) (U R U R) (U' R' U 'R2)

② PLL clockwise trigonometry formula: (R2 U)(R U R' U')(R' U')(R' U R ')

③ PLL top cross prongs for the formula M2 U M2 U2)( M2 U M2 )

Step 6: trapezoidal block direction turned right

Points: (1) using a combination of formulas, pay special attention to the operation of x y x' y'

p> (2) when using formula ①, the T-shaped block to be turned right is placed in the front and back position of the center block of the U surface

(3) when using formula ②, the T-shaped block to be turned right is placed in the right and front position of the center block of the U surface

①: (R U R' U') r (R' U R U ') r' y (R2 U )(R U R' U' )(R' U' )(R' U R') y'

②: r (U R'U') r' ( R U R U' R') y (R U'R) (U R U R ) (U 'R' U' R2) y'

Seventh step: the center block direction is flipped correctly

1) The U-side is flipped counterclockwise, F-side clockwise: (U' D L' R F' B ) U' (F B' L R' U D' ) F

②U-side clockwise, F-side counterclockwise U' D L' R F' B ) U (F B' L R' U D' )F'

③U-side, F-side at the same time turned 180 degrees: (U' D L' R F' B ) U2 (F B' L R' U D') F2

④ Single center block turned 180 degrees: (L R U2 L' R' U) ×2