Canto acima do encaixe FR com branco à direita, aresta na camada U já pareada com o canto.
URU'R'
P 1/41 4 moves
CFOP · Etapa 2
Algoritmos F2L
Todos os 41 casos padrão de F2L para o método CFOP. Insira pares canto-aresta de forma eficiente no encaixe frente-direita.
41 casos de inserção de pares F2L
What F2L really is
In the beginner method you solve the first layer in two separate phases: place four corners, then thread in four middle-layer edges. F2L collapses that into one idea — you pair each first-layer corner with its matching middle edge and drop them into their slot as a single unit, four times. That one change is the biggest single time saving in the whole solve. Dan Harris calls F2L the stage where “most people gain a lot more time,” and it is the reason a CFOP solver finishes in 20 seconds where the beginner method takes 60.
Hold the cube, then read the case
Keep the cross on the bottom and build every pair in the top layer, inserting downward into the four side slots — these algorithms target the front-right (FR) slot. To recognise a case, read it in two steps: first find the corner (is its white/cross-coloured sticker on the U face, the R face, the F face, or is the corner already down in a slot?), then find its edge. That two-step read is exactly how the case families below are grouped, so it doubles as a recognition routine.
The anatomy of every F2L algorithm
Almost every F2L algorithm does the same job in the same order: a set-up move or two to position the pieces, the pair-up that joins the corner and edge, the insert that drops the joined pair into its slot, and sometimes a restore that puts back any pair the pair-up disturbed. Once you can split an algorithm into those phases, you can rebuild a case you've forgotten and stop breaking slots you've already solved. Watch the two below and you'll see the phases happen.
Connected pair — the simplest insert
R lifts the slot pieces into the top layer and connects them with the waiting pair, U aligns the joined pair over its slot, and R' drops it home. There is no separate set-up or restore — a connected pair sitting in the right place is the gift case of F2L.
Separated pair — pair up, then insert
R U R' U' pairs the corner and edge up in the top layer; the trailing R U' R' connects and inserts the pair below the corner. Notice how the work splits cleanly into pair-up then insert — that is the template behind dozens of the cases below.
One trick, four angles
The most common myth about F2L is that filling all four slots means learning four times as many algorithms. It does not. Learn each case as a hand motion — how the pieces move relative to each other — rather than a fixed string of letters, and the same trick works from any side: you simply substitute the face that is in front of you. The front-right pair-up R' U R becomes F' U F, L' U L, or B' U B for the other three slots, with no new memorisation.
R'UR F'UF L'UL B'UB
Look-ahead: the real speed lever
Getting faster is not mainly about turning your hands faster — Harris's warning is that “the hands are quicker than the eyes.” Turn at full speed and your perception can't keep up, so you stall after every algorithm to hunt for the next pair, and those dead stops cost more than turning a little slower would. The fix feels backwards: slow your turning down just enough that your eyes can track the pieces, let the current algorithm run on autopilot from muscle memory, and spend the freed attention finding and orienting the next pair. Chain those together and the whole solve runs with no pauses.
The genuinely tricky cases
Most cases are short. The long ones almost all involve a piece trapped in a slot the wrong way — a corner wedged in with its cross colour pointing sideways, or a pair already in the slot but flipped. These are long for a reason: the algorithm has to eject the badly-placed piece into the top layer before it can rebuild and re-insert the pair. You'll find them under the “Corner in slot,” “Both in slot,” and similar filters below.
Finger tricks for F2L
A finger trick is a short sequence ripped off in one fluid motion instead of re-gripping between turns, and F2L is built almost entirely from a handful of them. Your index finger and thumb alone can drive the whole trigger family — these are the same pairs of moves that pair up and insert, so finger-tricking them is fast F2L. The famous “sexy move” R U R' U' is just two of these stitched together.
RUR' RU'R' R'F RB'
All 41 cases
Here is the complete set. Now that you can read an algorithm's phases and adapt it to any slot, treat these as phrases you understand rather than strings to parrot. Filter by case family, copy any algorithm, and step through it in 3D.
Espelho do caso 1. Par já formado na camada U, inserível pela esquerda.
U'F'UF
P 1/41 4 moves
Par já alinhado na camada U, pronto para inserção direta pela esquerda.
F'U'F
P 1/41 3 moves
Par já alinhado na camada U, pronto para inserção direta pela direita.
RUR'
P 1/41 3 moves
Canto com branco para cima, aresta ao lado. Algoritmo de separação padrão.
U'RU'R'URUR'
P 1/41 8 moves
Espelho do caso 5. Mesma ideia, lado esquerdo.
UF'UFU'F'U'F
P 1/41 8 moves
Canto com branco na face F, aresta na camada U.
U'RUR'URUR'
P 1/41 8 moves
Espelho do caso 7.
UF'U'FU'F'U'F
P 1/41 8 moves
Canto com branco na face R, aresta na U. Use uma preparação de mão esquerda.
y'U'R'URU'R'UR
P 1/41 9 moves
Canto com branco na face R, aresta na camada U na posição de trás.
URU2R'URU'R'
P 1/41 8 moves
Canto com branco na face F, aresta na camada U na posição de trás.
U'F'U2FU'F'UF
P 1/41 8 moves
Caso mais complicado que exige uma preparação de triplo sledgehammer.
URU'R'U'F'UF
P 1/41 8 moves
Canto com adesivo branco em cima, aresta na camada U. Inserção padrão.
RU2R'U'RUR'
P 1/41 7 moves
Espelho do caso 13.
F'U2FUF'U'F
P 1/41 7 moves
Canto para cima, aresta no lado esquerdo da camada U.
U'RU2R'U'RUR'
P 1/41 8 moves
Canto para cima, aresta no lado direito da camada U.
UF'U2FUF'U'F
P 1/41 8 moves
Canto para cima, aresta atrás na camada U. Preparação mais longa.
RU'R'URU'R'U2RU'R'
P 1/41 11 moves
Canto para cima, aresta no encaixe do meio (orientação errada).
RU'R'dR'U2RUR'U2R
P 1/41 11 moves
Canto para cima, aresta na camada do meio com orientação errada.
RUR'URU2R'URU'R'
P 1/41 11 moves
Espelho do caso 19.
y'R'U'RUR'U2RU'R'UR
P 1/41 12 moves
Canto na camada U, aresta já na camada do meio (encaixe errado ou invertida).
RU'R'URU2R'URU'R'
P 1/41 11 moves
Aresta no encaixe com branco voltado para a frente, canto acima. Resolução de seis movimentos.
RUR'U'RU'R'
P 1/41 7 moves
Aresta no encaixe precisando de reinserção com o canto acima.
U'RU'R'URUR'
P 1/41 8 moves
Canto para cima, aresta no encaixe. Preparação + inserção.
URUR'U2RUR'
P 1/41 8 moves
Caso mais complicado usando pegada de mão esquerda.
y'UR'U'RU2R'UR
P 1/41 9 moves
Canto já no encaixe FR (orientação errada), aresta na camada U.
URU'R'U'F'UF
P 1/41 8 moves
Espelho do caso 26.
U'F'UFURU'R'
P 1/41 8 moves
Canto no encaixe apontando na direção errada, aresta na U.
U'RUR'URUR'
P 1/41 8 moves
Espelho do caso 28.
UF'U'FU'F'U'F
P 1/41 8 moves
Canto no encaixe errado, aresta na U. Preparação de recuperação mais longa.
RU'R'URU'R'U2RU'R'
P 1/41 11 moves
Canto no encaixe errado, aresta na U atrás. Caso de tripla preparação.
RU'R'URU2R'URU'R'
P 1/41 11 moves
Ambas as peças em seus encaixes, mas com orientações erradas. Algoritmo longo.
RU'R'dR'U2RUR'U2R
P 1/41 11 moves
Canto orientado no encaixe, aresta invertida. Caso comum.
RU'R'UdR'U'R
P 1/41 8 moves
Padrão de repetição do sexy move para inverter o par.
RUR'U'RUR'U'RUR'
P 1/41 11 moves
Canto correto no encaixe, aresta precisa ser invertida no encaixe oposto.
RU'R'dR'U'RU'R'U'R
P 1/41 11 moves
Par no encaixe, mas com posições de canto e aresta trocadas.
RUR'U'RU'R'dR'U'R
P 1/41 11 moves
Variante simples com o canto correto e a aresta invertida.
RU'R'dR'U'R
P 1/41 7 moves
Apenas a aresta está no encaixe (invertida). Canto acima na camada U.
RU'R'URUR'U'RU'R'
P 1/41 11 moves
Apenas o canto está no encaixe (torcido). Aresta na camada U.
RUR'U'RUR'U'RUR'
P 1/41 11 moves
O par está no encaixe, mas invertido (conexão canto-aresta invertida).
RU'R'URU2R'URU'R'
P 1/41 11 moves
Par no encaixe, mas com canto e aresta em posições trocadas.
RU'R'URU'R'U2RU'R'
P 1/41 11 moves
Algoritmos OLL
Depois do F2L, oriente a última camada com os 57 casos de OLL
ReferênciaIntrodução ao CFOP
Entenda como o OLL se encaixa no método CFOP completo