Now it’s time to learn a few more EPs. The eventual goal is to know full (nonparity) EP, but it takes a while. I’m going to teach you a few algs at a time, from most common to least common. This stage there are 6.
This alg swaps UF and UB, and DR and DB. Hold the puzzle like shown and do 1,0/0,-1/0,-3/-1,0/6,0/1,0/0,3/0,1/
Next to learn are the U perms.
Counter Clockwise U-Perm: Hold it like so (solved side on front, opposite edge on left) and do 1,0/0,-3/-1,0/3,0/1,0/0,3/-1,0/-3,0/
Clockwise U-perm is similar. Hold it like this and do /3,0/1,0/0,-3/-1,0/-3,0/1,0/0,3/. Notice that both U-perm algorithms consist of the same two conjugates. Both times, the D move is -3 the first time and 3 the second time.
This EP is called O/Opposite. The O perm can go in either direction, but the solution is basically the same. The alg is nice and intuitive. Remember M2? Do M2 U M2 U M2. That will solve the case pictured above. If you want an actual alg, it’s 1,0/-1,-1/3,0/1,1/3,0/-1,-1/. The clockwise version is done the same but with (-3,0)s instead (U’s instead of Us)
H perm: This alg is exactly like the 3×3 alg. Do M2 U M2 U2 M2 U M2, or 1,0/-1,-1/3,0/1,1/6,0/-1,-1/3,0/1,1/
Z perm: This alg is the same as the Z perm on a Void Cube, but it messes up centers on a regular 3×3. Do M2 U M2 U’ M2, or 1,0/-1,-1/3,0/1,1/-3,0/-1,-1/
Continue to use multiple algorithms to solve each EP if necessary, but throw these ones in to turn some 3 alg cases into 2 alg cases (and obviously solve all these cases in 1)