三阶魔方-CFOP-OLL公式·技巧 OLL21 手法详解
[1]OLL情况：OLL21
| 示意图 | 实例图 | |
 |
 |
[2]详细图解：
1.正向：(R U' U' R' U')(R U R' U')(R U' R')
 |
→ |  |
→ |  |
→ |  |
|
| R | U' | U' | R' | ||||
| → |  |
→ |  |
→ |  |
→ |  |
| U' | R | U | R' | ||||
| → |  |
→ |  |
→ |  |
→ |  |
| U' | R | U' | R' | ||||
| → |  |
||||||
| 本站选用公式： | |
|
底(R U' U' R' U') 底(R U R' U') 底(R U' R') |
| 【特征】 | 十字，侧面4个黄色，侧面黄色像数字11。 |
| 【记忆】 | |
| 其他参考公式： | |
| 图同上 | 底F(R U R' U')3 F'
|
2.逆向：R U R' U R U' R' U R U U R'
 |
→ |  |
→ |  |
→ |  |
|
| R | U | R' | U | ||||
| → |  |
→ |  |
→ |  |
→ |  |
| R | U' | R' | U | ||||
| → |  |
→ |  |
→ |  |
→ |  |
| R | U | U | R' | ||||
| → |  |
||||||
