[CyanSandwich]

2. mit Limit

I feel stupid for not seeing Andrew's 2x2x2.

R F' U F2 U2 //222
(F D2 L2 F2 L') //223
(R' D2 R F D F') //Good 6c (16)

sk: R F' U F2 U2 F D' F' R' ^ D2 R L F2 L2 D2 F' *
^ = R' U2 R D R' U2 R D'
* = F' R B' R' F R B R'

Solution: R F' U F2 U2 F D' F' R2 U2 R D R' U2 R D R L F2 L2 D2 F2 R B' R' F R B R' (29)

Optimal was 28. I somehow missed a 2-move cancel near the start.