333fm
1、(1)Cross:B2 F' L' U' R2 D2 B2 (7 steps)
(2)F2L①:z2 L' U L y2 U' R U2 R' (7 steps)
F2L②:y2 U2 F' U' F U2 B U B' (8 steps)
F2L③:F U2 F' L' U2 L F' U2 F (9 steps)
F2L④:L' U' L U L' U2 L U L' U' L (11 steps)
(3)OLL:R U2 R' U' R U R' U' R U' R' (11 steps)
(4)PLL:y' Rw2 R2 U Rw2 R2 U Rw R' U2 Rw2 R2 U2 Rw R' U' (15 steps)
Total steps:68 steps
2、(1)Cross:U D' F' R F2 U R U (8 steps)
(2)F2L①:x2 U2 L' U L U' B' U B (8 steps)
F2L②:y U R U' R' B' U2 B (7 steps)
F2L③:U' F U' F' U F U F' (8 steps)
F2L④:U' R U2 R' U R U' R' (8 steps)
(3)OLL:y F R U R' U' F' R2 D' R U2 R' D R U2 R' (15 steps)
(4)PLL:y' Rw2 R2 U Rw2 R2 U Rw R' U2 Rw2 R2 U2 Rw R' U' (15 steps)
Total steps:69 steps
3、(1)Cross:F L' U R F' Dw' L' R2 (8 steps)
(2)F2L①:x2 U' R U2 R' (4 steps)
F2L②:L' U' L U B U B' (7 steps)
F2L③:y2 U F' U F U2 F' U F (8 steps)
F2L④:U2 R' U' R (4 steps)
(3)OLL:y' Fw R U R' U' Fw' y R U2 R' U' R U' R' (13 steps)
(4)PLL:y x' R2 D2 R' U' R D2 R' U R' (9 steps)
Total steps:53 steps
思路:CFOP