TalentJR apps
Goal: Bring white edges from the top down to the white centre at the bottom, each matching its side centre. 4 tasks · ★★★ = fewest moves.
The white-green edge is right above the green centre with white facing up. Bring it down.
Your cube, unfolded
Goal
Algorithm
Keyboard: U D L R F B turn a face, with Shift for the prime (U'). Y turns the whole cube. Backspace undoes.
Find a white edge on top with white facing up. Turn U until its other colour is above the same colour centre, then turn that face twice (F2, R2, B2 or L2).
The white cross is four white edges around the white centre at the bottom — and each edge’s side colour must match the centre beside it. An edge with white facing up only needs the right U turn and then a half turn of its side.
Algorithm: U … then F2
Chapter 2 — The white cross: Put the four white edges around the white centre at the bottom, each one matching the centre on its side.