333fm
1、(1)Cross:R2 F L B U' (5 steps)
(2)F2L①:z2 U R U' R' B L' B' L (8 steps)
F2L②:U L' U' L2 F' L' F (7 steps)
F2L③:U' F' U' F (4 steps)
F2L④:U' B U2 B' U2 B U' B' (8 steps)
(3)OLL:y R U R' U R' F R F' R U2 R' (11 steps)
(4)PLL:U2 R2 Uw' R U' R U R' Uw R2 y R U' R' (13 steps)
Total steps:56 steps
2、(1)Cross:F' U2 L B R U' (6 steps)
(2)F2L①:z2 U B' U' B (4 steps)
F2L②:R U R' U' R U R' U' R U R' (11 steps)
F2L③:U' B U B' U2 R' U R (8 steps)
F2L④:L' U L U2 L' U L (7 steps)
(3)OLL:y R' U' F U R U' R' F R (9 steps)
(4)PLL:y R U R' U' R' F R2 U' R' U' R U R' F' U' (15 steps)
Total steps:60 steps
3、(1)Cross:B' F' U L' B' U' L (7 steps)
(2)F2L①:z2 U L' U' L U2 F U' F' (8 steps)
F2L②:U B' U B R' U' R (7 steps)
F2L③:F' U F (3 steps)
F2L④:U2 L U2 L2 B L B' (7 steps)
(3)OLL:y' Fw' L' U' L U Fw (6 steps)
(4)PLL:U' R U R' y' R2 Uw' R U' R' U R' Uw R2 (13 steps)
Total steps:51 steps
思路:CFOP