4x4 OLL with parity: one edge flipped

Specialist
Since the 2010s
Every case cross-checked
The whole last layer's orientation and the parity at once, one dedge flipped: 27 cases.
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Source: Cubemuch, https://cubemuch.com/en/algs/4x4/oll-parity-1flip/, retrieved 2026-10-29: case names and groups, and each case's algorithms: those credited to the community sheets it cites first, in its order, then those its search found, best-scored first (no votes or setups). Every algorithm shown was checked by the logic engine; rejected ones are listed in docs/db-exclusions.md.