Last triangles (LT)

Cycle the last centres: 3 cases.

Source: LowCubes, https://www.lowcubes.com/fto/lt, retrieved 2026-10-24: case names and groups, and each case's algorithms, the primary one first (no votes, setups or readable case images). Every algorithm shown was checked by the logic engine; rejected ones are listed in docs/db-exclusions.md.