This can be for any NxN, and it doesn't need to have been pure. Personally, I've had three - a pure last layer skip OH which I got a 19 on, an 11.62 with U2 AUF on 3x3, and a 40-move FMC single.
This can be for any NxN, and it doesn't need to have been pure. Personally, I've had three - a pure last layer skip OH which I got a 19 on, an 11.62 with U2 AUF on 3x3, and a 40-move FMC single.