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Seven-step method. Just remember the three formulas.
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1. Concept:
l=left; r=right; b Back; f Front; u above; d = lower (bottom) surface.
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01.Up, right, down, right, backward, and straight - swap the positions of the small squares on the two adjacent vertices above02Up, left, down, down, down - swap the positions of the small squares on the two diagonal vertices above03
Up, Left, Bottom, Left, Up, Left, Left, Left—The small squares on the three vertices above rotate 120 degrees.
04.Up, Left, Up, Left, Up, Right, Bottom, Right - Swap the small squares in the middle of the three edges in turn, while making sure that all the other small squares do not move.
All mantras ensure that the position and angle of the small square below remain the same.
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1.In the diagram, 2 u are purposefully equal to u2; In fact, as far as this formula is concerned, I personally think it is not the best. Because (r u u ..
f (r u r` u`) r u r`u`) r u r` u`) f`
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The image is from the top view, and the f-side is below.
This is the 21st formula for OLL in the GAN standard tutorial and one of the 7 in the cross series.
21.(r u'u') (r' u' r u r' u') (r u' r')
Analysis: u'u'The effect is equivalent to u2 and u'2. How to write uu. In the end, it is the upper layer that rotates 180 degrees.
The reason why it is used in this way is for the coherence of the technique, and the connection between the top and bottom does not stop.
The parentheses represent a basic technique, which is easy to remember on the one hand, and on the other hand, it is found in many formulas. Many of these small techniques are combined.
For this formula, the conversion method (r u' u'The left hand is holding the Rubik's cube with the thumb on the f side; The thumb of the right hand is in the lower right corner of the f-side, and the other fingers are on the u-side. When turning, push the thumb of the right hand to do the r, while continuing to do the u with the thumb', pluck the index finger of the left hand to do u'
r' u' r u r' u'Do u with the left hand in the previous step'When the result is achieved, at the same time, the right thumb is changed to the F side, and the operation of this technique is continued; (r u' r'Do u with the left hand in the previous step'When the result is achieved, at the same time, the thumb of the right hand is changed to the lower right corner of the F side, and the operation of this technique is continued;
Note: There is another method of transfer, which is as follows.
r u2 r') (u' r u r' u') (r u' r')
U2 can be plucked with the index finger and middle finger of the right hand!
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This dude is good, I have time to talk.
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