F2L 21

Disconnected pairs: Both in the U layer, apart.

Algorithms

1. U2 R U R' U R U' R' reads as U2 · Su · Insert
2. R U' R' U2 R U R' reads as Insert · U2 · Extract
3. R B U2 B' R'
4. y' f R' f' U2 f R f'
5. U2 F' U' F R U R' reads as U2 F' U' · Crow

Also in Disconnected pairs

• F2L 5
• F2L 6
• F2L 7
• F2L 8
• F2L 9
• F2L 10
• F2L 19
• F2L 20
• F2L 22

All 41 F2L cases