OLL parity

Flip a single dedge on a 4x4: the case a 3x3 cannot have.

Train these

Print sheet

Basic

Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw'

17 HTM · 4 algs

Pure

2R' U2 2L F2 2L' F2 2R2 U2 2R U2 2R' U2 F2 2R2 F2

22 HTM · 4 algs

M Rw U2 x Rw U2 Rw U2 Rw' U2 Lw U2 Rw' U2 Rw U2 Rw' U2 Rw' M'

21 HTM · 4 algs

Source: SpeedCubeDB, https://speedcubedb.com/a/4x4/OLLParity, retrieved 2026-10-24: case names, groups, setups and images, and the top-voted algorithms per case with their votes. Every algorithm shown was checked by the logic engine; rejected ones are listed in docs/db-exclusions.md.