Cride5
Premium Member
I currently do most of my ZZ F2L intuitively using block building, but when you get to the last slot and you end up with a nasty connected case things can get a bit confusing, so I thought I'd post my algs for dealing with these situations without affecting the edge orientation.
The algs assume that both connected blocks are on the U layer and positioned directly over their slot (front right). They don't apply to connected corner and DF-edges, only middle-slice edges. If the connected cases are for the back, or front left slots the algorithms will need to be modified/reflected accordingly - this is assuming the cube isn't rotated during F2L The first parts in brackets position the block before insertion, so may not be necessary ... here goes:
I was struggling to find anything better for case 4, does anyone know a shorter one??
EDIT: Provided by blade740 and Lucas Garron
EDIT2: Two more interesting cases:
The algs assume that both connected blocks are on the U layer and positioned directly over their slot (front right). They don't apply to connected corner and DF-edges, only middle-slice edges. If the connected cases are for the back, or front left slots the algorithms will need to be modified/reflected accordingly - this is assuming the cube isn't rotated during F2L The first parts in brackets position the block before insertion, so may not be necessary ... here goes:
- SAME COLOUR TOP
(U') R' U2 R' U R' U' R U2' R
(U R U2 R') U R U R' U2 R U R'
- OPPOSITE COLOURS TOP, COLUMN CASE
R' U2 R2 U R2 U R
- OPPOSITE COLOURS TOP, 'L' CASE
(U') R U' R' U R U R'
- DF CORNER TOP, SAME COLOURS SIDE
(U2) R2 U2 R' U' R U' R2
U2 R' U2 R U R' U R2 U R'
U' R' U' R U' R' U2 R2 U' R'
- DF CORNER TOP, OPPOSITE COLOURS SIDE
R U2 R' U' R U R'
I was struggling to find anything better for case 4, does anyone know a shorter one??
EDIT: Provided by blade740 and Lucas Garron
EDIT2: Two more interesting cases:
- Where the corner is in place, with correct orientation, but edge is in the top face. Here's the alg (with edge in UF)...
R' U' R' U' R2 U R U R
(U2) R' U' R2 U' R2 U2 R2 U R'
(U') R2 U R2 U R U' R U' R2
(U') R' U' R' U' R' U R U R
(U) R U' R2 U2 R2 U R2 U R
(U) R2 U R' U R' U' R2 U' R2
(U) R' U' R' U' R U R U R
- Where the edge is in place, but the corner is in top face, oriented with down-face on up-face. The alg (with corner in FRU)..
R2 U R2 U R2 U2 R2
(U2) R2 U2 R2 U' R2 U' R2
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