The tree

Sets branch into groups and cases; open a branch for the ways to solve it.

• F2L: 41 cases. First two layers: pairing a corner with its edge and putting them in the front-right slot, both pieces starting in the top layer or in their own slot. Numbers are speedcubedb.com's.
• Advanced F2L: 54 cases. F2L with a piece stuck in the wrong slot, drawn as speedcubedb.com draws it: the stuck piece in the front-right slot, its pair going into the slot beside it, and front-right's own pieces free. Numbers and the first algs are speedcubedb's; AF2L 43-54 are ones it doesn't list.
• 2-look OLL: 10 cases. Orienting the last layer in two steps: first the edges (3 cases), then the corners (7 cases, the OCLL set). Edge cases are drawn with the corners greyed out: they don't matter yet.
• OLL: 57 cases. Full OLL: orienting the whole last layer in one look, 57 cases. Numbers, groups and algs are speedcubedb.com's; OLL 21-27 are the same cases as 2-look OLL's corners, and share their learned marks.
• PLL: 21 cases. Permutation of the last layer: the top is all yellow, the 21 cases move the pieces into place. The first alg of each case is the one its picture is drawn from.
• Notation: 28 cases. The letters every alg is written in. Each letter is a face: R right, L left, U up (the top), D down (the bottom), F front, B back. On its own it means a quarter turn clockwise as you look at that face; ' (prime) means anticlockwise, 2 a half turn.