User:Code Monkey/F2L Notes

Base Cases

The Pair Move the pair forward, then make room and slot it in. F2L U [R: U'] F2L U' [F': U]

Split Pair Front half faces forward, would be correctly placed by turning downward. Back half is parallel to forward direction and oppositely colored. Bring the pair together, then move it forward and return. F2L [F': U'] F2L [R: U]

Reposition Edge

Twisted Split Pair, Perpendicular Front half faces forward, back half lies perpendicular and is similarly colored. Move backward, then hide the front half in the corner and move the back half in to make the pair. F2L U' [R: U . U2 [R: U']] F2L U [F': U' . U2' [F': U]] Becomes The Pair.

Twisted Split Pair, Parallel Front half faces forward, back half lies parallel and is similarly colored. Move backward, then hide the front half in the corner and move the back half in (by a half-turn) to make the pair. F2L U' [R: U2 . U2 [R: U']] F2L U [F': U2' . U2' [F': U]] Becomes The Pair.

Reposition Edge and Flip Corner

These involve a quarter-turn if the white face of the front half faces down when hidden in the corner, and a half-turn if it faces to the side.

Mnemonic: The white face is a foot dragging behind, slowing rotation down to a quarter-turn.

Crossed Split Pair Split pair, but back half lies perpendicular. Move forward, then hide the front in the corner, then move the back half into position for the split pair. F2L U [F': U' . U' [F': U']] F2L U' [R: U . U [R: U])] Becomes Split Pair. Back Right Slot Open: R' U R2 U R'	Twisted Pair Pair, but the back half is twisted. Move backward, then hide the front half in the corner and move the back half into position (by a half-turn) for a split pair. F2L U' [R: U2 . U [F': U']] F2L U [F': U2' . U' [R: U]] Becomes Split Pair. Back right slot open: R' U2 R2 U R'
Twisted Sideways Pair Front half faces sideways, back half oppositely colored. Each side faces "correctly." Move backward, hide the front half in the corner, and position the back half for a split pair. F2L U [F': U . U' [F': U']] Back right slot open : R' U R F' U' F F2L U' [R: U' . U [R: U]] Becomes Split Pair.

Split Pair by Going Over

These have an opposite pattern to the above: If the white face is down, it's a half-turn.

Mnemonic: Each of these is a “slingshot”; flinging something sideways (i.e. the front, or white part, isn't forward) won't send it as far.

Sideways Pair Front half faces sideways, back half similarly colored (on top). Lean back, then move backward to cut. Return, forming a split pair. F2L [F': U . U2' [R: U]] Front left slot open: U (R U' R') D (R U' R') D' Back right slot open: U' (R' U R U') (R U R') F2L [R: U' . U2 [F': U']] Becomes Split Pair.

Dead Twisted Pair Front half faces upward, back half attached on its own side and oppositely colored. Lean back, then move backward a half-turn to cut. Return, forming a split pair. F2L [R: U2 . U' [R: U]] F2L [F': U2' . U [F': U']] Becomes Split Pair.

Pair Made on Side

Dead Split Pair, Back Opposite Front half faces upward, back half is opposite its top color. Move the back half to its own color, hide it in the far corner, then move the top half to make the pair. F2L U [R: U2' . [R', F]] F2L U' [F': U2 . [F, R']] Becomes The Pair.

Dead Split Pair, Back Adjacent Front half faces upward, back half is near its top color. Make the pair in the back, then place it before restoring. F2L [(y) F R : U2] F2L [F' L': U2]

Weird

Dead Pair Front half faces upward, back half attached and similarly colored (on the front). Just … just do as the man says. F2L U [F, R' . U [R: U]] F2L U' [R', F . U' [F: U']] Becomes Split Pair.

Corner In Place

Prodigal Son Front half is correct; back half is on the side matching its outward color. Move the back half away, flip the front half up, then return the back half and bring together the pair. F2L U' [F': U . U [R: U']] F2L U [R: U' . U' [F': U]] If the back right slot is open: F2L R2 U' R' U R2 Becomes The Pair.	Posing Outward Back half is on its own side; front half is in place but facing the other side. Hide the back half in the corner, then bring the front half toward it to make the pair in the corner. F2L [R: U' . U [R: U']] F2L [F': U . U' [F': U])] Becomes The Pair.
Posing Forward Back half is on its own side; front half is in place but facing that same side. Hide the back half in the far corner, move the front half away, then restore to form a split pair. F2L [F': U' . U [F': U']] F2L [R: U . U' [R: U]] Becomes Split Pair.

Edge In Place

Upward Pair Pair in its own corner, facing upward. Extract the pair and place it. F2L [R: U' . U [F': U]] Becomes The Pair.	Upward Twisted Pair Twisted Pair in its own corner, facing upward. Extract the pair, splitting it while restoring, forming Posing Forward. F2L [R: U . U' [R: U] . U' [R: U]] Becomes Posing Forward.
Standing Pair Back half correct; front half facing outward. Split the pair by moving the front backward; hide the front in the corner, then move to form the pair. F2L U' [R: U' . U2 [R: U']] F2L U [F': U . U2' [F': U]] Becomes The Pair.	Standing Twisted Pair Back half in place but flipped; front half facing outward. Split the pair by moving the front forward a half-turn; move the back half out the other way, then clear that face, making a split pair. F2L U2 [R: U' . U' [F': U']] F2L U2' [F': U . U [R: U]] Becomes Split Pair.

Both In Place

Downward Pair Solved.	Downward Twisted Pair Like Downward Pair, but twisted. Extract the twisted pair. F2L [R: U . U2 [R: U2] . U [F': U']] Becomes Twisted Pair.
Hanging Twisted Pair Back is correct; front is in place but facing outward. Turn the pair so that white faces up, then split it while restoring, forming a twisted split pair. F2L [R: U' . U' [R: U] . U2 [R: U']] F2L [F': U . U [F': U'] . U2' [F': U]] Becomes Twisted Split Pair, Perpendicular.	Hanging Pair Back is in place but flipped; front is in place but facing outward. Turn the pair so that white faces up, then split it while restoring, forming a crossed split pair. F2L [R: U' . U' [R: U'] . U [F': U']] F2L [F': U . U [F': U] . U' [R: U]] Becomes Crossed Split Pair.