Difference between revisions of "First Two Layers"
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+ | <seo title="First Two Layers (F2L) of Fridrich Speedcubing Method" metak="f2l algs, f2l, first two layers, f2l algorithms, speedcubing" /> | ||
+ | {{Substep Infobox | ||
+ | |name=F2L | ||
+ | |image=F2Linfo.png | ||
+ | |proposers=[[René Schoof]] | ||
+ | |year=1981 | ||
+ | |anames=First Two Layers | ||
+ | |variants=[[ZBLS]], [[VHF2L]], [[WV]], [[MGLS]], possibly others | ||
+ | |subgroup=<nowiki><U,R,L,F,B,D></nowiki> | ||
+ | |algs=0 to 41; hundreds more with [[Advanced F2L]] | ||
+ | |moves=6.7 [[HTM]] per slot; ~26.8 [[HTM]] per four slots | ||
+ | |purpose=<sup></sup> | ||
+ | * [[Speedsolving]], [[FMC]] | ||
+ | |previous=[[Cross cube state]] | ||
+ | |next=[[F2L cube state]] | ||
+ | |previousimage=[[Image:VisualCube_3_Egell.png|120px|left|link=Cross cube state]] | ||
+ | |nextimage=[[Image:F2L_higlight.jpg|120px|right|link=F2L cube state]] | ||
+ | |||
+ | }} | ||
'''First Two Layers''', or '''F2L''' are normally the first two bottom layers of the [[3x3x3 cube]], or essentially all layers up until the last layer on larger cubes. | '''First Two Layers''', or '''F2L''' are normally the first two bottom layers of the [[3x3x3 cube]], or essentially all layers up until the last layer on larger cubes. | ||
− | + | The definition is a little different depending on the subject or who you are talking to. Usually, it refers to the part of the [[CFOP]] and [[CFCE]] methods that solve the first two layers in [[pair]]s, excluding the [[cross]] step. | |
− | + | ||
+ | [[2-gen]] F2L, most pairs (30 of 41) have the edge sitting in the U-layer having two orientations, it shows R or F colour at the side. If it is the R colour you can solve the pair using only RU and if it is the F colour you can turn the cube (y') and sovle the pair to the back slot using only RU. The only pairs that needs both R and F turns are the six ones with the edge unoriented in the slot, if the edge is oriented in the slot both ways works. | ||
+ | |||
+ | <br clear=all> | ||
== Approaches == | == Approaches == | ||
+ | |||
+ | === Petrus F2L === | ||
+ | |||
+ | Another way to solve the 'F2L' is by building blocks, common during the first two layers of the [[Petrus]] method. | ||
=== Fridrich F2L === | === Fridrich F2L === | ||
− | |||
− | === Petrus F2L === | + | There are many ways to solve the 'F2L' on a cube. A common system is using the [[Fridrich]] method first two layer approach. After solving the cross, a corner-edge pair is paired up ('''form pair'''), and then inserted into the correct slot ('''pair insertion'''). A total of four corner edge (or 'CE') pairs are made and inserted to solve the first two layers. This step of the cube should be done intuitively, even though there are algorithms for each case, algorithms should only be used for slower cases. |
+ | |||
+ | The concept of pairing up four corner/edge pairs was first proposed by [[René Schoof]] in 1981. | ||
+ | |||
+ | |||
+ | ---- | ||
+ | |||
+ | |||
+ | {{F2L}} | ||
+ | |||
+ | ==Easy Cases== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 1 === | ||
+ | [[Image:F2L01.png]] | ||
+ | |||
+ | {{Alg|U (R U' R')|F2L}} | ||
+ | {{Alg|R' F R F'|F2L}} | ||
+ | {{Alg|U2 (R U2 R')|F2L}} | ||
+ | {{Alg|* y' U f R' f' |F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 2 === | ||
+ | [[Image:F2L02.png]] | ||
+ | |||
+ | {{Alg|* y U' (f' L f)|F2L}} | ||
+ | {{Alg|y' U' (R' U R)|F2L}} | ||
+ | {{Alg|U' (F' U F)|F2L}} | ||
+ | {{Alg|F R' F' R|F2L}} | ||
+ | {{Alg|d' L' U L|F2L}} | ||
+ | {{Alg|r U R' U' M|F2L}} | ||
+ | {{Alg|(U2) l R U' R' U l'|F2L}} | ||
+ | {{Alg|(U2) l2 F' l' U l'|F2L}} | ||
+ | {{Alg|(U') F R' F' R2 U' R'|F2L}} | ||
+ | {{Alg|F l' U' l|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 3 === | ||
+ | [[Image:F2L03.png]] | ||
+ | |||
+ | {{Alg|* y2 f' L' f |F2L}} | ||
+ | {{Alg|y' (R' U' R)|F2L}} | ||
+ | {{Alg|y (L' U' L)|F2L}} | ||
+ | {{alg|F' U' F|F2L}} | ||
+ | {{Alg|U M R U' R' U M'|F2L}} | ||
+ | {{Alg|U r' R2 U' R' U M'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 4 === | ||
+ | [[Image:F2L04.png]] | ||
+ | |||
+ | {{Alg|(R U R')|F2L}} | ||
+ | {{Alg|(U2) L (R U' R') U L'|F2L}} | ||
+ | {{Alg|* y' f R f'|F2L}} | ||
+ | |||
+ | |||
+ | |-valign="top" | ||
+ | {* = Usually used for the back slots without doing rotations. Gud Luck!} | ||
+ | |} | ||
+ | |||
+ | ==Reposition Edge== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 5 === | ||
+ | [[Image:F2L05.png]] | ||
+ | |||
+ | {{Alg|(U' R U R') U2 (R U' R')|F2L}} | ||
+ | {{Alg|(U' R U R') U (R' F R F')|F2L}} | ||
+ | {{Alg|F2 (L' U' L U) F2|F2L}} | ||
+ | {{Alg|L U' R U L' R' U2 R U' R'|F2L}} | ||
+ | {{Alg|U' (R U R') U' R U2 R'|F2L}} | ||
+ | If the front left slot is open: | ||
+ | {{Alg|U F' R' F' R F|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|U R F R' F' R'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 6 === | ||
+ | [[Image:F2L06.png]] | ||
+ | |||
+ | {{Alg|d (R' U' R) U2' (R' U R)|F2L}} | ||
+ | {{Alg|y' (U R' U' R) U2 (R' U R)|F2L}} | ||
+ | {{Alg|y' (U R' U' R) U' y (F R' F' R)|F2L}} | ||
+ | {{Alg|U' (r U' R' U) (R U r')|F2L}} | ||
+ | {{Alg|R2 (B U B' U') R2|F2L}} | ||
+ | {{Alg|y F2 (R U R' U') F2|F2L}} | ||
+ | If the front left slot is open: | ||
+ | {{Alg|U' F' R' F R F|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|U' R F R F' R'|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 7 === | ||
+ | [[Image:F2L07.png]] | ||
+ | |||
+ | {{Alg|U' (R U2' R') U2 (R U' R')|F2L}} | ||
+ | {{Alg|(U' R U2 R')2|F2L}} | ||
+ | {{Alg|M' U' M U2 r U' r'|F2L}} | ||
+ | {{Alg|R U B U2 B' U R'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 8 === | ||
+ | [[Image:F2L08.png]] | ||
+ | |||
+ | {{Alg|d (R' U2 R) U2' (R' U R)|F2L}} | ||
+ | {{Alg|(U F' U2 F)2|F2L}} | ||
+ | {{Alg|y' U (R' U2 R) U2 (R' U R)|F2L}} | ||
+ | {{Alg|(r' U2) (R2 U R2 U r)|F2L}} | ||
+ | {{Alg|y' R' U' F' U2 F U' R|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Reposition Edge and Flip Corner== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 9 === | ||
+ | [[Image:F2L09.png]] | ||
+ | |||
+ | {{Alg|U' R U' R' d R' U' R |F2L}} | ||
+ | {{Alg|d (R' U' R U') (R' U' R)|F2L}} | ||
+ | {{Alg|y2 U' (L U' L') d (L' U' L)|F2L}} | ||
+ | {{Alg|U r U R' U' R2 r' U' R'|F2L}} | ||
+ | {{Alg|U' R U' R' U2 M R U' R' U M'|F2L}} | ||
+ | {{Alg|F (R U R' U') F' R U' R'|F2L}} | ||
+ | {{Alg|(U F' U' F) U' (F' U' F)|F2L}} | ||
+ | {{Alg|y F2 (U R U' R') F2|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R' U' R F' U' F|F2L}} | ||
+ | If the front left slot is open: | ||
+ | {{Alg|F U' F2' U' F|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 10 === | ||
+ | [[Image:F2L10.png]] | ||
+ | |||
+ | {{Alg|U' (R U R' U)(R U R')|F2L}} | ||
+ | {{Alg|R d' R U R' U2 F'|F2L}} | ||
+ | {{Alg|U F' U F U' R U R'|F2L}} | ||
+ | {{Alg|d R' U R d' R U R'|F2L}} | ||
+ | {{Alg|y2 B2 (U' R' U R) B2|F2L}} | ||
+ | If the front left slot is open: | ||
+ | {{Alg|F U F' R U R'|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R' U R2 U R'|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 11 === | ||
+ | [[Image:F2L11.png]] | ||
+ | |||
+ | {{Alg|U' (R U2' R') d (R' U' R)|F2L}} | ||
+ | {{Alg|U' (R U2' R') U (F' U' F)|F2L}} | ||
+ | {{Alg|(y) L' d L' U2 L U2 F|F2L}} | ||
+ | {{Alg|U' R U2 R' U2 M R U' R' U M'|F2L}} | ||
+ | {{Alg|U (F R' F' R)2 U' R U R'|F2L}} | ||
+ | {{Alg|(y') R U2 R2 U' R2 U' R'|F2L}} | ||
+ | {{Alg|U' l F U' R U l' U R'|F2L}} | ||
+ | | | ||
+ | |||
+ | === F2L 12 === | ||
+ | [[Image:F2L12.png]] | ||
+ | |||
+ | {{Alg|R U' R' U R U' R' U2 R U' R'|F2L}} | ||
+ | {{Alg|d (R' U2 R) d' (R U R')|F2L}} | ||
+ | {{Alg|R U2 R' U2' R U2' R' U2' R U' R'|F2L}} | ||
+ | {{Alg|R' U2 R2 U R2 U R|F2L}} | ||
+ | {{Alg|y (F U') (R U2 R' U2') F'|F2L}} | ||
+ | {{Alg|(U R U' R') U' (R U R' U') (R U R')|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R' U2 R2 U R'|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 13 === | ||
+ | [[Image:F2L13.png]] | ||
+ | |||
+ | {{Alg|d (R' U R U') (R' U' R)|F2L}} | ||
+ | {{Alg|y' U (R' U R U') (R' U' R)|F2L}} | ||
+ | {{Alg|(U F' U F) U' (F' U' F)|F2L}} | ||
+ | {{Alg|M' U' (R U R') U' (R U2 r')|F2L}} | ||
+ | {{Alg|(R U' R') U (R' F R F') (R U' R')|F2L}} | ||
+ | {{Alg|(R U R') d' (L' U' L U) (L' U' L)|F2L}} | ||
+ | {{Alg|(R U' R' U2) (R U' l U' R' U l')|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R' U R F' U' F|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 14 === | ||
+ | [[Image:F2L14.png]] | ||
+ | |||
+ | {{Alg|U' (R U' R' U) (R U R')|F2L}} | ||
+ | {{Alg|d' F U' F' d R U R'|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Split Pair by Going Over== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 15 === | ||
+ | [[Image:F2L15.png]] | ||
+ | |||
+ | {{Alg|M U L F' L' U' M'|F2L}} | ||
+ | {{Alg|R B L U' L' B' R'|F2L}} | ||
+ | {{Alg|(F' U F) U2 (R U R')|F2L}} | ||
+ | {{Alg|U (R' F R F') U (R U R')|F2L}} | ||
+ | {{Alg|y' (R' U R U') d' (R U R')|F2L}} | ||
+ | {{Alg|y (L' U L) U2 y' (R U R')|F2L}} | ||
+ | {{Alg|(L R) F U F' U' (L' R')|F2L}} | ||
+ | {{Alg|F' U L' U L U2 F|F2L}} | ||
+ | {{Alg|R U2 B U B' U R'|F2L}} | ||
+ | {{Alg|R U2 R' U R U R' U R U' R'|F2L}} | ||
+ | {{Alg|R U R' U2 R U' R' U R U' R'|F2L}} | ||
+ | {{Alg|R U' R U2' R2' U' R2 U' R2'|F2L}} | ||
+ | {{Alg|U' R2 U2 R U' R' U R' U2 R2|F2L}} | ||
+ | {{Alg|U2 (R U R' U') R U2 R' U R U R'|F2L}} | ||
+ | {{Alg|U' R' U2 R' U R' U' R U2 R|F2L}} | ||
+ | {{Alg|R U' R U2 R2 U' R2 U' R2|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|U' (R' U R U') (R U R')|F2L}} | ||
+ | If the front left slot is open: | ||
+ | {{Alg|U (R U' R') D (R U' R') D'|F2L}} | ||
+ | {{Alg|R F U F' U' R'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 16 === | ||
+ | [[Image:F2L16.png]] | ||
+ | |||
+ | {{Alg|(R U' R' U) d (R' U' R)|F2L}} | ||
+ | {{Alg|(R U' R') U2 (F' U' F)|F2L}} | ||
+ | {{Alg|(U') (R U2 M' U' R' U) (R U r')|F2L}} | ||
+ | {{Alg|(U) R (F R U R' U' F') R'|F2L}} | ||
+ | {{Alg|(U) M' (U R U' r') (U' R U R')|F2L}} | ||
+ | {{Alg|y' U R U2 R U' R U R' U2 R'|F2L}} | ||
+ | {{Alg|y M U' R' F R U M' y'|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|F' R' U' R U F|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 17 === | ||
+ | [[Image:F2L17.png]] | ||
+ | |||
+ | {{Alg|(R U2 R') U' (R U R')|F2L}} | ||
+ | {{Alg|F' U' F U F' U' F U2 R U' R'|F2L}} | ||
+ | {{Alg|F' U' F U F' U' F U R' F R F'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 18 === | ||
+ | [[Image:F2L18.png]] | ||
+ | |||
+ | {{Alg|y' (R' U2 R) U (R' U' R)|F2L}} | ||
+ | {{Alg|y (L' U2 L) U (L' U' L)|F2L}} | ||
+ | {{Alg|(R U R' U') R U2 R' U y (L' U L)|F2L}} | ||
+ | {{Alg|(R U R' U') (R U R' U') F R' F' R |F2L}} | ||
+ | {{Alg|F' U2 F U F' U' F|F2L}} | ||
+ | {{Alg|(R' F R F') (R U' R' U) (R U' R')|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Pair Made on Side== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 19 === | ||
+ | [[Image:F2L19.png]] | ||
+ | |||
+ | {{Alg|U R U2 R2 (F R F')|F2L}} | ||
+ | {{Alg|U (R U2 R') U (R U' R')|F2L}} | ||
+ | {{Alg|(R U' R' U)2 R U R'|F2L}} | ||
+ | {{Alg|(R U2 R' U') U' (R U' R' U)(R U R')|F2L}} | ||
+ | | | ||
+ | |||
+ | === F2L 20 === | ||
+ | [[Image:F2L20.png]] | ||
+ | |||
+ | {{Alg|U' F' U2 F2 (R' F' R)|F2L}} | ||
+ | {{Alg|y' U' (R' U2 R) U' (R' U R)|F2L}} | ||
+ | {{Alg|y2 d' (R' U2 R) U' (R' U R)|F2L}} | ||
+ | {{Alg|U' (R U R' U) (F' L' U2 L F)|F2L}} | ||
+ | {{Alg|U' (R U' R2' F R F') (R U' R')|F2L}} | ||
+ | {{Alg|y' (R' U R U')2 R' U' R|F2L}} | ||
+ | {{Alg|U' (R U' R' U) (R U') (l U' R' U l')|F2L}} | ||
+ | {{Alg|d' L' U2 L U' L' U L|F2L}} | ||
+ | {{Alg|R U R' U2 R U R' U2 F' U F|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 21 === | ||
+ | [[Image:F2L21.png]] | ||
+ | {{Alg|(R U' R') U2 (R U R')|F2L}} | ||
+ | {{Alg|U2 (R U R' U)(R U' R')|F2L}} | ||
+ | {{Alg|R B U2 B' R'|F2L}} | ||
+ | {{Alg|U2 R x' U' R U x R2'|F2L}} | ||
+ | {{Alg|U F R U R' U' R' F' R|F2L}} | ||
+ | | | ||
+ | |||
+ | === F2L 22 === | ||
+ | [[Image:F2L22.png]] | ||
+ | {{Alg|y' (R' U R) U2 (R' U' R)|F2L}} | ||
+ | {{Alg|F' L' U2 L F|F2L}} | ||
+ | {{Alg|y' U2 (R' U' R U') (R' U R)|F2L}} | ||
+ | {{Alg|y2 U' d' (R' U' R U') (R' U R)|F2L}} | ||
+ | {{Alg| r U' r' U2 r U r'|F2L}} | ||
+ | {{Alg|U F R U R' U' F' R U R' U2'|F2L}} | ||
+ | {{Alg|d2 y' R' U' R U' R' U R|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Weird== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 23 === | ||
+ | [[Image:F2L23.png]] | ||
+ | |||
+ | {{Alg|U2 R2 U2 (R' U' R U') R2|F2L}} | ||
+ | {{Alg|U (F R' F' R) U (R U R')|F2L}} | ||
+ | {{Alg|U R U' R' U' R U' R' U R U' R'|F2L}} | ||
+ | {{Alg|(R U R' U') U' (R U R' U')(R U R')|F2L}} | ||
+ | {{Alg|(R U2 R') (F' U F) U' (R U R')|F2L}} | ||
+ | {{Alg|R U' R' U' (R U R') U2 (R U R')|F2L}} | ||
+ | {{Alg|R2 U R' U R U2 R' U' R'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 24 === | ||
+ | [[Image:F2L24.png]] | ||
+ | |||
+ | {{Alg|U F' L' U L F R U R'|F2L}} | ||
+ | {{Alg|(R U R') d (R' U R U') (R' U R)|F2L}} | ||
+ | {{Alg|y' (R' U' R U) U (R' U' R U)(R' U' R)|F2L}} | ||
+ | {{Alg|y' U2 R2 U2 (R U R' U) R2|F2L}} | ||
+ | {{Alg|U' (R U) (R2' F R F') (R U' R')|F2L}} | ||
+ | {{Alg|U' (R U R' U) (R U') (l U' R' U l') |F2L}} | ||
+ | {{Alg|U2 F2 U2 (F U F' U) F2|F2L}} | ||
+ | {{Alg|F U (R U' R' F')(R U' R')|F2L}} | ||
+ | {{Alg|d' (F' L F L') U' (L' U' L)|F2L}} | ||
+ | {{Alg|y (L' U' L U) U (L' U' L U)(L' U' L )|F2L}} | ||
+ | {{Alg|y L2 U' L U' L' U2 L U L|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Corner in Place, Edge in U Face== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 25 === | ||
+ | [[Image:F2L25.png]] | ||
+ | |||
+ | {{Alg|R' U' R' U' R' U R U R|F2L}} | ||
+ | {{Alg|d' (L' U L) d (R U' R')|F2L}} | ||
+ | {{Alg|d' (L' U L) (F' L F L')|F2L}} | ||
+ | {{Alg|y U' (L' U' L) U (F U F')|F2L}} | ||
+ | {{Alg|U' (F' U F) U (R U' R')|F2L}} | ||
+ | {{Alg|U' M' U R U' r' (R U R')|F2L}} | ||
+ | {{Alg|R U2 R' U R U2 R' U2 R U' R'|F2L}} | ||
+ | {{Alg|R U R' U2 R U R' U2 R U' R'|F2L}} | ||
+ | {{Alg|R' F' R U R U' R' F|F2L}} | ||
+ | {{Alg|(U') F' R U R' U' R' F R|F2L}} | ||
+ | {{Alg|(R U' R' U') (R U' R' U) (R U R')|F2L}} | ||
+ | {{Alg|y' (l' U' l U) (l F' l' F)|F2L}} | ||
+ | {{Alg|(U) (R' U' R' U') R2 (U R U R)|F2L}} | ||
+ | {{Alg|(U2) (R' U' R' U' R U R U R)|F2L}} | ||
+ | {{Alg|y U R' u' R U' R' U u R|F2L}} | ||
+ | {{Alg|U' (R' F R F') (R U R')|F2L}} | ||
+ | {{Alg|y' U' R' U R r' U' R U M'|F2L}} | ||
+ | |||
+ | If the back right slot is open: | ||
+ | {{Alg|R2 U' R' U R2|F2L}} | ||
+ | {{Alg|U D' R U' R' D|F2L}} | ||
+ | |||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 26 === | ||
+ | [[Image:F2L26.png]] | ||
+ | |||
+ | {{Alg|y' R U R U R U' R' U' R'|F2L}} | ||
+ | {{Alg|(R U R' U')2 (R' F R F')2|F2L}} | ||
+ | {{Alg|U (R U' R') d' (L' U L)|F2L}} | ||
+ | {{Alg|U (R U' R') U' (F' U F)|F2L}} | ||
+ | {{Alg|U (R U' R') (F R' F' R)|F2L}} | ||
+ | {{Alg|U R U (r' R U' R' U M')|F2L}} | ||
+ | {{Alg|U R U' M' U R' U' M|F2L}} | ||
+ | {{Alg|y' (U') R U R U R2 U' R' U' R'|F2L}} | ||
+ | {{Alg|y' (U2) R U R U R' U' R' U' R'|F2L}} | ||
+ | {{Alg|r U r' U2 r U r' U2 r U' r'|F2L}} | ||
+ | {{Alg|y (r U r' U') (r' F r F')|F2L}} | ||
+ | {{Alg|y U (L F' L' F) (L' U' L)|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 27 === | ||
+ | [[Image:F2L27.png]] | ||
+ | |||
+ | {{Alg|(R U' R' U)(R U' R')|F2L}} | ||
+ | {{Alg|(R U' R2)(F R F')|F2L}} | ||
+ | {{Alg|F' U' F U2 (R U' R')|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 28 === | ||
+ | [[Image:F2L28.png]] | ||
+ | |||
+ | {{Alg|(R U R' U') F R' F' R |F2L}} | ||
+ | {{Alg|(R U R') d (R' U2 R) |F2L}} | ||
+ | {{Alg|y' (R' U R U')(R' U R)|F2L}} | ||
+ | {{Alg|(R U R') U (F' U2 F)|F2L}} | ||
+ | {{Alg|R U2 l U' R' U l'|F2L}} | ||
+ | {{Alg|(R U R') U l2 F' l' U l'|F2L}} | ||
+ | {{Alg|(F' U F2)(R' F' R)|F2L}} | ||
+ | {{Alg|(U2) R' F R F2 L' U2 L F|F2L}} | ||
+ | {{Alg|(R U' R') U' (R' F R F') (R U' R')|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 29 === | ||
+ | [[Image:F2L29.png]] | ||
+ | |||
+ | {{Alg|y' (R' U' R U)(R' U' R)|F2L}} | ||
+ | {{Alg|U2 (R U' R') y' (R' U' R)|F2L}} | ||
+ | {{Alg|(R' F R F')(R' F R F')|F2L}} | ||
+ | {{Alg|M' U R U' r' U (R U' R')|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 30 === | ||
+ | [[Image:F2L30.png]] | ||
+ | |||
+ | {{Alg|(R U R' U')(R U R')|F2L}} | ||
+ | {{Alg|U2 (F' U F)(R U R')|F2L}} | ||
+ | {{Alg|U' (R U2 R')U2 (R U R')|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Edge in Place, Corner in U face== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 31 === | ||
+ | [[Image:F2L31.png]] | ||
+ | |||
+ | {{Alg|(R U' R') d (R' U R)|F2L}} | ||
+ | {{Alg|(R U' R' U)(F' U F)|F2L}} | ||
+ | {{Alg|U' R' F R F' R U' R'|F2L}} | ||
+ | {{Alg|R U' l U' R' U l'|F2L}} | ||
+ | {{Alg|F2 r U r' F R U' R'|F2L}} | ||
+ | {{Alg|R U2 R' U' F R' F' R|F2L}} | ||
+ | {{Alg|R U' R B' R' B R'|F2L}} | ||
+ | | | ||
+ | |||
+ | === F2L 32 === | ||
+ | [[Image:F2L32.png]] | ||
+ | |||
+ | {{Alg|(R U R' U')(R U R' U')(R U R')|F2L}} | ||
+ | {{Alg|(U R U' R')(U R U' R')(U R U' R')|F2L}} | ||
+ | {{Alg|U2 R d' R U R' d R'|F2L}} | ||
+ | {{Alg|U R d' R U2 R' d R'|F2L}} | ||
+ | {{Alg|R2 U R2 U R2 U2 R2|F2L}} | ||
+ | {{Alg|U2 R2 U2 R2 U' R2 U' R2|F2L}} | ||
+ | {{Alg|(R U2 R') (F' U2 F) U' (R U R')|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 33 === | ||
+ | [[Image:F2L33.png]] | ||
+ | |||
+ | {{Alg|U' (R U' R') U2' (R U' R')|F2L}} | ||
+ | {{Alg|y U' L' U' R' U L U' R|F2L}} | ||
+ | {{Alg|(U' R U' R') U2 (R U' R')|F2L}} | ||
+ | {{Alg|y U' (L' U' L) U2 (L' U' L)|F2L}} | ||
+ | {{Alg|U y F U R U R' U' R U' R' F'|F2L}} | ||
+ | {{Alg|(U' F' U' F) U2 (F' U' F)|F2L}} | ||
+ | {{Alg|y' U' R D R' U R D' R'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 34 === | ||
+ | [[Image:F2L34.png]] | ||
+ | |||
+ | {{Alg|U (F' U F) U2 (F' U F)|F2L}} | ||
+ | {{Alg|U' (R U2' R') U (R U R')|F2L}} | ||
+ | {{Alg|U (R U R') U2 (R U R')|F2L}} | ||
+ | {{Alg|d (R' U R) U2 (R' U R)|F2L}} | ||
+ | {{Alg|y (U L' U L) U2 (L' U L)|F2L}} | ||
+ | {{Alg|U y F U2 R U2 R' F'|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|E' R U R' E|F2L}} | ||
+ | {{Alg|u' F' U F E|F2L}} | ||
+ | |||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 35 === | ||
+ | [[Image:F2L35.png]] | ||
+ | |||
+ | {{Alg|(U' R U R') d (R' U' R)|F2L}} | ||
+ | {{Alg|U2 (R U' R') U' (F' U' F)|F2L}} | ||
+ | {{Alg|U M' U R U' r' R U' R'|F2L}} | ||
+ | {{Alg|U' l U' R U l' U R'|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 36 === | ||
+ | [[Image:F2L36.png]] | ||
+ | |||
+ | {{Alg|d (R' U' R) d' (R U R')|F2L}} | ||
+ | {{Alg|y U2 (L' U L) U (F U F')|F2L}} | ||
+ | {{Alg|U F' U' F U' (R U R')|F2L}} | ||
+ | {{Alg|U2 (R' F R F') U2 (R U R')|F2L}} | ||
+ | {{Alg|y' U (R' U' R U') y (R U R')|F2L}} | ||
+ | |||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | ==Edge and Corner in Place== | ||
+ | |||
+ | {|border="0" width="100%" valign="top" cellpadding="3" | ||
+ | |-valign="top" | ||
+ | | | ||
+ | === F2L 37 === | ||
+ | [[Image:F2L37.png]] | ||
+ | |||
+ | Solved | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 38 === | ||
+ | [[Image:F2L38.png]] | ||
+ | |||
+ | {{Alg|(R' F R F') (R U' R' U) (R U' R' U2) (R U' R')|F2L}} | ||
+ | {{Alg|(R U' R') d (R' U2 R) U2' (R' U R)|F2L}} | ||
+ | {{Alg|(R U R') U2 (R U2 R') d (R' U' R)|F2L}} | ||
+ | {{Alg|(R2 U2) (F R2 F') (U2 R' U R')|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R U' R2 U2 R U' F' U F|F2L}} | ||
+ | {{Alg|R U' R2 U2 R F R' F' R|F2L}} | ||
+ | {{Alg|R U' R2 U2 R U2 F' U2 F|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 39 === | ||
+ | [[Image:F2L39.png]] | ||
+ | |||
+ | {{Alg|(R U' R') U' (R U R') U2 (R U' R')|F2L}} | ||
+ | {{Alg|y' (R' U' R) U2 (R' U R U') (R' U' R)|F2L}} | ||
+ | {{Alg|y (L' U' L) U2 (L' U L U')(L' U' L)|F2L}} | ||
+ | {{Alg|(R U R' U') (R U2 R') U' (R U R')|F2L}} | ||
+ | {{Alg|(R U2 R' U2) (R U2 R' U') R U R'|F2L}} | ||
+ | {{Alg|R U' R' F2 L' U' L U F2|F2L}} | ||
+ | {{Alg|(R2 U2) (R' U' R U') (R' U2 R')|F2L}} | ||
+ | {{Alg|y' R' U2 R' U' R U' R' U2 R2|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 40 === | ||
+ | [[Image:F2L40.png]] | ||
+ | |||
+ | {{Alg|(R U' R' U)(R U2' R') U (R U' R')|F2L}} | ||
+ | {{Alg|(R U R') U2 (R U' R' U)(R U R')|F2L}} | ||
+ | {{Alg|(R U2) (R U R' U) (R U2 R2')|F2L}} | ||
+ | {{Alg|y' R2 U2 R U R' U R U2 R|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | | | ||
+ | |||
+ | === F2L 41 === | ||
+ | [[Image:F2L41.png]] | ||
+ | |||
+ | {{Alg|(R U' R') d (R' U' R U') (R' U' R)|F2L}} | ||
+ | {{Alg|R U' R' U' R U' R' d R' U' R|F2L}} | ||
+ | {{Alg|y (L' U' L U)(L' U L) U2 (F U F')|F2L}} | ||
+ | {{Alg|(R U' R) y (U R U' R') y' R2|F2L}} | ||
+ | {{Alg|F2 (L' U' L U) y (L U' L)|F2L}} | ||
+ | {{Alg|R F (U R U' R' F') U' R'|F2L}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R U' R2 U' R y' R' U' R y|F2L}} | ||
+ | |||
+ | | | ||
+ | |||
+ | === F2L 42 === | ||
+ | [[Image:F2L42.png]] | ||
+ | |||
+ | {{Alg|(R U' R' U) d (R' U' R U') (R' U R)|F2L}} | ||
+ | {{Alg|(R U' R' U2) y' (R' U' R U' R' U R)|F2L}} | ||
+ | {{Alg|(R U R' U') (R U' R') U2 (F' U' F)|F2L}} | ||
+ | {{Alg|y (L' U L) d' (L U L' U) (L U L')|F2L}} | ||
+ | {{Alg|R2 y (R U R' U') y' (R' U R')|F2L}} | ||
+ | {{Alg|(R U' R')(F' L' U2 L F)|F2L}} | ||
+ | {{Alg| R U (F R U R' U' F') R'|F2L}} | ||
+ | If the front left slot is open: | ||
+ | {{Alg|y' R' U R2 U R' y R U R'|F2L}} | ||
+ | |||
+ | |-valign="top" | ||
+ | |} | ||
+ | |||
+ | == See also == | ||
+ | * [[Keyhole First Two Layers]] | ||
+ | * [[Intuitive solving]] | ||
+ | * [[Advanced F2L]] | ||
+ | * [[ZBLS]] | ||
+ | * [[Fridrich Method]] | ||
+ | * [[Petrus Method]] | ||
+ | |||
+ | == External Resources == | ||
+ | === Beginner === | ||
+ | * [http://rishidoshi.blogspot.com/ RiDo's Hunting Story] Uses a simple analogy method for F2L, but not comprehensive | ||
+ | * [https://docs.google.com/document/d/1npPMcy2Vv-jjUB7wr0gHE0rESuwUgba_D7vT2OUzvTQ/mobilebasic?pli=1 Beginner's F2L: 3 steps for every case] Excellent F2L guide covering every scenario | ||
+ | |||
+ | === Standard === | ||
+ | * [https://www.youtube.com/watch?v=Ar_Zit1VLG0 (VIDEO) Learn F2L in 6 minutes (Full Intuitive F2L Tutorial)] | ||
+ | * [http://erikku.er.funpic.org/rubik/F2L.html Erik Akkersdijk's F2L Cases (from his old site)] | ||
+ | * [http://www.cubestation.co.uk/cs2/index.php?page=3x3x3/cfop/f2l/f2l Dan Harris's F2L Cases] | ||
+ | * [http://www.opticubes.com/cubing/f2l/ Opticubes.com Optimal F2L Cases] | ||
+ | * [http://jmbaum.110mb.com/f2l.htm Jason Baum's F2L Cases] | ||
+ | * [http://www.kungfoomanchu.com/#333speedcubing Andy Klise's Printable F2L PDF] | ||
+ | * [http://www.cubeloop.com/php/cube/advanced.php?chapter=f2l CubeLoop F2L Algs] | ||
+ | * [http://www.cubewhiz.com/pll.php Bob Burton's F2L Cases] | ||
+ | * [http://cubefreak.net/speed/advancedf2l/standard.php F2L algs for every case from all angles by Shotaro Makisumi] | ||
+ | * Youtube: [http://www.youtube.com/watch?v=J8Yl3lioY8c How to get faster at the 3x3 Rubik's cube - F2L] - by Feliks Zemdegs | ||
+ | * Youtube: [http://www.youtube.com/watch?v=k-xbcAMfWwM Rubik's Cube: Fridrich F2L explained] - by Badmephisto | ||
+ | * [https://www.speedcubingtips.eu/base-de-donnees-f2l/ Speedcubingtips.eu F2L algs] | ||
+ | * [https://www.speedcubingtips.eu/fl2-animes/ Speedcubingtips.eu F2L algs animated version] | ||
+ | |||
+ | === Advanced === | ||
+ | * Youtube: [https://www.youtube.com/playlist?list=PL83bqDZwr97mik_tbQrCJQQcXsb-wzC53 Viktor Danilov Expert F2L (Russian language)] | ||
+ | * Database: [http://algs.expertcuber.by/ Website for Viktor Danilov F2L series] | ||
+ | * [http://www.speedsolving.com/forum/showthread.php?t=15050 Erik Expert F2L tutorial] | ||
+ | * [http://cubefreak.net/advancedf2l/ Cubefreak Advanced F2L] | ||
+ | * [http://pagesperso-orange.fr/absolutemind/ms-angl.html Multislotting Tutorial] | ||
+ | * [https://www.speedcubingtips.eu/multislotting-resoudre-deux-f2l-ensemble/ Speedcubingtips.eu multislotting algs] | ||
+ | * [https://www.speedcubingtips.eu/f2l-et-empty-slots/ Speedcubingtips.eu F2L - use of empty slot algs] | ||
+ | * [https://www.speedcubingtips.eu/f2l-et-pieces-coincees-stuck-pieces/ Speedcubingtips.eu F2L and stuck pieces cases] | ||
+ | |||
+ | == F2L Trainers == | ||
+ | [http://expertcuber.by/ ExpertCuber.by] | ||
− | + | [[Category:3x3x3 other substeps]] | |
− | + | __NOTOC__ |
Revision as of 13:33, 26 July 2019
|
First Two Layers, or F2L are normally the first two bottom layers of the 3x3x3 cube, or essentially all layers up until the last layer on larger cubes.
The definition is a little different depending on the subject or who you are talking to. Usually, it refers to the part of the CFOP and CFCE methods that solve the first two layers in pairs, excluding the cross step.
2-gen F2L, most pairs (30 of 41) have the edge sitting in the U-layer having two orientations, it shows R or F colour at the side. If it is the R colour you can solve the pair using only RU and if it is the F colour you can turn the cube (y') and sovle the pair to the back slot using only RU. The only pairs that needs both R and F turns are the six ones with the edge unoriented in the slot, if the edge is oriented in the slot both ways works.
Approaches
Petrus F2L
Another way to solve the 'F2L' is by building blocks, common during the first two layers of the Petrus method.
Fridrich F2L
There are many ways to solve the 'F2L' on a cube. A common system is using the Fridrich method first two layer approach. After solving the cross, a corner-edge pair is paired up (form pair), and then inserted into the correct slot (pair insertion). A total of four corner edge (or 'CE') pairs are made and inserted to solve the first two layers. This step of the cube should be done intuitively, even though there are algorithms for each case, algorithms should only be used for slower cases.
The concept of pairing up four corner/edge pairs was first proposed by René Schoof in 1981.
F2L |
Easy Cases
{* = Usually used for the back slots without doing rotations. Gud Luck!}
F2L 1
|
F2L 2
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 3
|
F2L 4
|
Reposition Edge
F2L 5
If the front left slot is open:
If the back right slot is open:
|
F2L 6
If the front left slot is open:
If the back right slot is open:
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 7
|
F2L 8
|
Reposition Edge and Flip Corner
Split Pair by Going Over
F2L 15
If the back right slot is open:
If the front left slot is open:
|
F2L 16
If the back right slot is open:
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 17
|
F2L 18
|
Pair Made on Side
F2L 19
|
F2L 20
| ||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 21
|
F2L 22
|
Weird
F2L 23
|
F2L 24
|
Corner in Place, Edge in U Face
F2L 25
|
F2L 26
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 27
|
F2L 28
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 29
|
F2L 30
|
Edge in Place, Corner in U face
F2L 31
|
F2L 32
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 33
|
F2L 34
If the back right slot is open:
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 35
|
F2L 36
|
Edge and Corner in Place
F2L 37Solved |
F2L 38
If the back right slot is open:
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 39
|
F2L 40
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
F2L 41
If the back right slot is open:
|
F2L 42
If the front left slot is open:
|
See also
External Resources
Beginner
- RiDo's Hunting Story Uses a simple analogy method for F2L, but not comprehensive
- Beginner's F2L: 3 steps for every case Excellent F2L guide covering every scenario
Standard
- (VIDEO) Learn F2L in 6 minutes (Full Intuitive F2L Tutorial)
- Erik Akkersdijk's F2L Cases (from his old site)
- Dan Harris's F2L Cases
- Opticubes.com Optimal F2L Cases
- Jason Baum's F2L Cases
- Andy Klise's Printable F2L PDF
- CubeLoop F2L Algs
- Bob Burton's F2L Cases
- F2L algs for every case from all angles by Shotaro Makisumi
- Youtube: How to get faster at the 3x3 Rubik's cube - F2L - by Feliks Zemdegs
- Youtube: Rubik's Cube: Fridrich F2L explained - by Badmephisto
- Speedcubingtips.eu F2L algs
- Speedcubingtips.eu F2L algs animated version
Advanced
- Youtube: Viktor Danilov Expert F2L (Russian language)
- Database: Website for Viktor Danilov F2L series
- Erik Expert F2L tutorial
- Cubefreak Advanced F2L
- Multislotting Tutorial
- Speedcubingtips.eu multislotting algs
- Speedcubingtips.eu F2L - use of empty slot algs
- Speedcubingtips.eu F2L and stuck pieces cases
F2L Trainers