ZZ44 Method

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ZZ44 method
ZZ-44.png
Information about the method
Proposer(s): Hồ Nguyễn Quốc Hưng
Proposed: 2021
Alt Names: none
Variants: ZZ44+
No. Steps: 7
No. Algs: unknown
Avg Moves: 145 STM
Purpose(s):
Scramble 04.jpg

Scrambled cube -> 2 opposite centers -> D and B centers -> Pseudo Cross Edge -> Place any 2 oriented edges on the BR and BL spots -> Last 2 centers.-> Edge pairing -> Solve as ZZ -> Solved cube


ZZ44 Method is a frequently used speedsolving reduction method for the 4x4x4 cube.

Mini maru.jpg

ZZ44 method is a 4x4x4 speedsolving method proposed by Quoc Hung meant to suit users of the ZZ method. It can also be applied to bigger cubes. It similiar to Hoya but with EOpairing.

The step

  1. F2C: Two opposite centers (not U/D ones).
  2. D and B centers.
  3. Pseudo cross edge
  4. Place any 2 oriented edges on the BR and BL spots
  5. Last 2 centers.
  6. Edge pairing
  7. Finish by ZZ (EO+Parity OLL, ZZ F2L, COLL, EPLL+Parity PLL.)

The Pseudo Cross

  • Pseudo Cross for EOLINE solver :

-1 line edge + Any good edge at DL(or DR) cross positon.

  • Pseudo Cross for EOArrow solver:

-1 Line Edge + DL(Or DR) cross edge.

Last Layer

For the last layer, you can use the same COLL algs as on 3x3, as you don't need to worry about orientation parity due to it being solved already.

After COLL, you have EPLL+parity. There are the 4 normal EPLL cases (H-perm, Ua-perm, Ub-perm, Z-perm), plus the additional opposite swap, adjacent swap, Oa, Ob and W permutations.

Opposite swap Opppllparity.png

Speedsolving Logo tiny.gif r2 U2 r2 Uw2 r2 u2 (12,6) N Chris Hardwick [1]
Speedsolving Logo tiny.gif (Rw2 F2 U2) r2 (U2 F2 Rw2) (14,7) N Stefan Pochmann [2]


Adjacent swap Oadjpllparity.png

Speedsolving Logo tiny.gif (R U R' U') r2 U2 r2 Uw2 r2 Uw2 (U' R U' R') (20,14) N Chris Hardwick [3]
Speedsolving Logo tiny.gif (R U R' U') (Rw2 F2 U2) r2 (U2 F2 Rw2) (U R U' R') (22,15) N Stefan Pochmann []


Oa Permutation Circ4cyccw.png

Speedsolving Logo tiny.gif M2 U M2 U M' U2 l2 U2 r2 Uw2 r2 u2 M' (22,13) N [4]


Ob Permutation Circ4cy.png

Speedsolving Logo tiny.gif M2 U' M2 U' M' U2 l2 U2 r2 Uw2 r2 u2 M' (22,13) N [5]


W permutation Zigzag4cycdedges.png

Speedsolving Logo tiny.gif (U') R' U R' U' R' U' R' U R U' Uw2 r2 Uw2 r2 U2 Rw2 (21,16) SP04 N Stefan Pochmann [6]


Do the correct algorithm out of the 9, and you're done!

Pros

  • Gives a ZZ finish for a low movecount than Hoya,similar movecount to Yau, with all of the advantages Hoya has.
  • Easy look ahead
  • Less cube rotations
  • The most used moves are Rw, Lw, L, R, U. Very few F, B moves. Resulting higher TPS.
  • Better ways to deal with parity. The number of algs used in a solve with double parity is one less than with standard Yau with double parity, and PLL parity recognition is easier due to corners being solved.
  • Suited for ZZ solver


Cons

  • L2C can be a little hard.

Notable Users

  • Hồ Nguyễn Quốc Hưng
  • Nguyễn Thông
  • Goux (nickname)


External Link