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 | |name=F2L | ||
|image=F2Linfo.png | |image=F2Linfo.png | ||
|proposers=[[René Schoof]] | |proposers=[[René Schoof]] | ||
|year=1981 | |year=1981 | ||
− | |anames= | + | |anames=First Two Layers |
|variants=[[ZBLS]], [[VHF2L]], [[WV]], [[MGLS]], possibly others | |variants=[[ZBLS]], [[VHF2L]], [[WV]], [[MGLS]], possibly others | ||
− | | | + | |subgroup=<nowiki><U,R,L,F,B,D></nowiki> |
− | |algs= | + | |algs=0 to 41; hundreds more with [[Advanced F2L]] |
− | |moves=6.7 [[HTM]] | + | |moves=6.7 [[HTM]] per slot; ~26.8 [[HTM]] per four slots |
|purpose=<sup></sup> | |purpose=<sup></sup> | ||
* [[Speedsolving]], [[FMC]] | * [[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. | + | 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 | + | [[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> | <br clear=all> | ||
+ | |||
== Approaches == | == Approaches == | ||
Line 26: | Line 33: | ||
=== Fridrich F2L === | === 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, and then inserted into the correct slot. A total of four corner edge (or 'CE') pairs are made and inserted to solve the first two layers. | + | |
+ | 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. | The concept of pairing up four corner/edge pairs was first proposed by [[René Schoof]] in 1981. | ||
+ | |||
+ | |||
+ | ---- | ||
+ | |||
{{F2L}} | {{F2L}} | ||
Line 43: | Line 55: | ||
{{Alg|R' F R F'|F2L}} | {{Alg|R' F R F'|F2L}} | ||
{{Alg|U2 (R U2 R')|F2L}} | {{Alg|U2 (R U2 R')|F2L}} | ||
+ | {{Alg|* y' f R' f' |F2L}} | ||
| | | | ||
Line 49: | Line 62: | ||
[[Image:F2L02.png]] | [[Image:F2L02.png]] | ||
+ | {{Alg|* y U' (f' L f)|F2L}} | ||
{{Alg|y' U' (R' U R)|F2L}} | {{Alg|y' U' (R' U R)|F2L}} | ||
{{Alg|U' (F' U F)|F2L}} | {{Alg|U' (F' U F)|F2L}} | ||
Line 57: | Line 71: | ||
{{Alg|(U2) l2 F' l' U l'|F2L}} | {{Alg|(U2) l2 F' l' U l'|F2L}} | ||
{{Alg|(U') F R' F' R2 U' R'|F2L}} | {{Alg|(U') F R' F' R2 U' R'|F2L}} | ||
+ | {{Alg|F l' U' l|F2L}} | ||
|-valign="top" | |-valign="top" | ||
Line 64: | Line 79: | ||
[[Image:F2L03.png]] | [[Image:F2L03.png]] | ||
+ | {{Alg|* y2 f' L' f |F2L}} | ||
{{Alg|y' (R' U' R)|F2L}} | {{Alg|y' (R' U' R)|F2L}} | ||
{{Alg|y (L' U' L)|F2L}} | {{Alg|y (L' U' L)|F2L}} | ||
Line 77: | Line 93: | ||
{{Alg|(R U R')|F2L}} | {{Alg|(R U R')|F2L}} | ||
{{Alg|(U2) L (R U' R') U L'|F2L}} | {{Alg|(U2) L (R U' R') U L'|F2L}} | ||
+ | {{Alg|* y' f R f'|F2L}} | ||
+ | |||
|-valign="top" | |-valign="top" | ||
+ | {* = Usually used for the back slots without doing rotations. Gud Luck!} | ||
|} | |} | ||
Line 94: | Line 113: | ||
{{Alg|L U' R U L' R' U2 R U' R'|F2L}} | {{Alg|L U' R U L' R' U2 R U' R'|F2L}} | ||
{{Alg|U' (R U R') U' R U2 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}} | ||
| | | | ||
Line 106: | Line 129: | ||
{{Alg|R2 (B U B' U') R2|F2L}} | {{Alg|R2 (B U B' U') R2|F2L}} | ||
{{Alg|y F2 (R U R' U') F2|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" | |-valign="top" | ||
Line 114: | Line 141: | ||
{{Alg|U' (R U2' R') U2 (R U' R')|F2L}} | {{Alg|U' (R U2' R') U2 (R U' R')|F2L}} | ||
− | {{Alg|U' R U2 R' | + | {{Alg|(U' R U2 R')2|F2L}} |
{{Alg|M' U' M U2 r U' r'|F2L}} | {{Alg|M' U' M U2 r U' r'|F2L}} | ||
{{Alg|R U B U2 B' U R'|F2L}} | {{Alg|R U B U2 B' U R'|F2L}} | ||
Line 124: | Line 151: | ||
{{Alg|d (R' U2 R) U2' (R' U R)|F2L}} | {{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|y' U (R' U2 R) U2 (R' U R)|F2L}} | ||
{{Alg|(r' U2) (R2 U R2 U r)|F2L}} | {{Alg|(r' U2) (R2 U R2 U r)|F2L}} | ||
Line 140: | Line 168: | ||
{{Alg|U' R U' R' d R' U' R |F2L}} | {{Alg|U' R U' R' d R' U' R |F2L}} | ||
− | {{Alg|d (R' U' R U')(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|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' U' R2 r' U' R'|F2L}} | ||
Line 147: | Line 175: | ||
{{Alg|(U F' U' F) U' (F' U' F)|F2L}} | {{Alg|(U F' U' F) U' (F' U' F)|F2L}} | ||
{{Alg|y F2 (U R U' R') F2|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}} | ||
| | | | ||
Line 158: | Line 190: | ||
{{Alg|d R' U R d' R U R'|F2L}} | {{Alg|d R' U R d' R U R'|F2L}} | ||
{{Alg|y2 B2 (U' R' U R) B2|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" | |-valign="top" | ||
Line 168: | Line 202: | ||
{{Alg|U' (R U2' R') d (R' U' R)|F2L}} | {{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|(y) L' d L' U2 L U2 F|F2L}} | ||
{{Alg|U' R U2 R' U2 M R U' R' U M'|F2L}} | {{Alg|U' R U2 R' U2 M R U' R' U M'|F2L}} | ||
Line 184: | Line 219: | ||
{{Alg|y (F U') (R U2 R' U2') F'|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}} | {{Alg|(U R U' R') U' (R U R' U') (R U R')|F2L}} | ||
− | {{Alg|R' U2 | + | If the back right slot is open: |
− | + | {{Alg|R' U2 R2 U R'|F2L}} | |
|-valign="top" | |-valign="top" | ||
Line 193: | Line 228: | ||
[[Image:F2L13.png]] | [[Image:F2L13.png]] | ||
− | {{Alg|d (R' U R U')(R' U' R)|F2L}} | + | {{Alg|d (R' U R U') (R' U' R)|F2L}} |
− | {{Alg|y' U (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|(U F' U F) U' (F' U' F)|F2L}} | ||
{{Alg|M' U' (R U R') U' (R U2 r')|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') 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') d' (L' U' L U) (L' U' L)|F2L}} | ||
− | {{Alg|(R U' R' U2)(R U' l U' R' 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}} | ||
| | | | ||
Line 207: | Line 243: | ||
[[Image:F2L14.png]] | [[Image:F2L14.png]] | ||
− | {{Alg|U' (R U' R' U)(R U R')|F2L}} | + | {{Alg|U' (R U' R' U) (R U R')|F2L}} |
{{Alg|d' F U' F' d R U R'|F2L}} | {{Alg|d' F U' F' d R U R'|F2L}} | ||
Line 222: | Line 258: | ||
{{Alg|M U L F' L' U' M'|F2L}} | {{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|U (R' F R F') U (R U R')|F2L}} | ||
{{Alg|y' (R' U R U') d' (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|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 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 R U' R' U R U' R'|F2L}} | ||
Line 230: | Line 271: | ||
{{Alg|U' R2 U2 R U' R' U R' U2 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|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 === | === F2L 16 === | ||
Line 243: | Line 290: | ||
{{Alg|(U) M' (U R U' r') (U' R U 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' 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" | |-valign="top" | ||
Line 251: | Line 301: | ||
{{Alg|(R U2 R') U' (R U R')|F2L}} | {{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}} | ||
| | | | ||
Line 277: | Line 329: | ||
{{Alg|U R U2 R2 (F R F')|F2L}} | {{Alg|U R U2 R2 (F R F')|F2L}} | ||
{{Alg|U (R U2 R') U (R U' R')|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}} | {{Alg|(R U2 R' U') U' (R U' R' U)(R U R')|F2L}} | ||
| | | | ||
Line 288: | Line 341: | ||
{{Alg|U' (R U R' U) (F' L' U2 L F)|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|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|U' (R U' R' U) (R U') (l U' R' U l')|F2L}} | ||
{{Alg|d' L' U2 L U' L' 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" | |-valign="top" | ||
Line 305: | Line 360: | ||
=== F2L 22 === | === F2L 22 === | ||
[[Image:F2L22.png]] | [[Image:F2L22.png]] | ||
− | {{Alg|y' (R' U R) U2 (R' U' R)| | + | {{Alg|y' (R' U R) U2 (R' U' R)|F2L}} |
{{Alg|F' L' U2 L F|F2L}} | {{Alg|F' L' U2 L F|F2L}} | ||
− | {{Alg|y' U2 (R' U' R U')(R' U R)|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|y2 U' d' (R' U' R U') (R' U R)|F2L}} |
{{Alg| r U' r' U2 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|U F R U R' U' F' R U R' U2'|F2L}} | ||
Line 329: | Line 384: | ||
{{Alg|(R U R' U') 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 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}} | ||
| | | | ||
Line 345: | Line 402: | ||
{{Alg|d' (F' L F L') U' (L' U' L)|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 (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" | |-valign="top" | ||
|} | |} | ||
Line 357: | Line 415: | ||
[[Image:F2L25.png]] | [[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) d (R U' R')|F2L}} | ||
{{Alg|d' (L' U L) (F' L F L')|F2L}} | {{Alg|d' (L' U L) (F' L F L')|F2L}} | ||
Line 369: | Line 428: | ||
{{Alg|y' (l' U' l U) (l F' l' F)|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|(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|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: | If the back right slot is open: | ||
{{Alg|R2 U' R' U R2|F2L}} | {{Alg|R2 U' R' U R2|F2L}} | ||
Line 380: | Line 443: | ||
[[Image:F2L26.png]] | [[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') d' (L' U L)|F2L}} | ||
{{Alg|U (R U' R') U' (F' U F)|F2L}} | {{Alg|U (R U' R') U' (F' U F)|F2L}} | ||
Line 385: | Line 450: | ||
{{Alg|U R U (r' R U' R' U M')|F2L}} | {{Alg|U R U (r' R U' R' U M')|F2L}} | ||
{{Alg|U R U' M' 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|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 (r U r' U') (r' F r F')|F2L}} | ||
+ | {{Alg|y U (L F' L' F) (L' U' L)|F2L}} | ||
|-valign="top" | |-valign="top" | ||
Line 411: | Line 479: | ||
{{Alg|(F' U F2)(R' F' R)|F2L}} | {{Alg|(F' U F2)(R' F' R)|F2L}} | ||
{{Alg|(U2) R' F R F2 L' U2 L F|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" | |-valign="top" | ||
Line 449: | Line 518: | ||
{{Alg|F2 r U r' F R U' R'|F2L}} | {{Alg|F2 r U r' F R U' R'|F2L}} | ||
{{Alg|R U2 R' U' F R' F' R|F2L}} | {{Alg|R U2 R' U' F R' F' R|F2L}} | ||
+ | {{Alg|R U' R B' R' B R'|F2L}} | ||
| | | | ||
Line 468: | Line 538: | ||
[[Image:F2L33.png]] | [[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|y U' L' U' R' U L U' R|F2L}} | ||
{{Alg|(U' R U' R') U2 (R U' R')|F2L}} | {{Alg|(U' R U' R') U2 (R U' R')|F2L}} | ||
Line 480: | Line 551: | ||
[[Image:F2L34.png]] | [[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 U2' R') U (R U R')|F2L}} | ||
{{Alg|U (R U R') U2 (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|d (R' U R) U2 (R' U R)|F2L}} | ||
{{Alg|y (U L' U L) U2 (L' U L)|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" | |-valign="top" | ||
Line 505: | Line 582: | ||
{{Alg|U F' U' F U' (R U R')|F2L}} | {{Alg|U F' U' F U' (R U R')|F2L}} | ||
{{Alg|U2 (R' F R F') U2 (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" | |-valign="top" | ||
Line 528: | Line 607: | ||
{{Alg|(R U R') U2 (R U2 R') d (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}} | {{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" | |-valign="top" | ||
Line 542: | Line 625: | ||
{{Alg|R U' R' F2 L' U' L U F2|F2L}} | {{Alg|R U' R' F2 L' U' L U F2|F2L}} | ||
{{Alg|(R2 U2) (R' U' R U') (R' U2 R')|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 === | === F2L 40 === | ||
Line 549: | Line 635: | ||
{{Alg|(R U R') U2 (R U' 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|(R U2) (R U R' U) (R U2 R2')|F2L}} | ||
− | {{Alg| | + | {{Alg|y' R2 U2 R U R' U R U2 R|F2L}} |
|-valign="top" | |-valign="top" | ||
Line 557: | Line 643: | ||
[[Image:F2L41.png]] | [[Image:F2L41.png]] | ||
− | {{Alg|(R U' R') d (R' U' R U')(R' U' R)|F2L}} | + | {{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|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|y (L' U' L U)(L' U L) U2 (F U F')|F2L}} | ||
Line 563: | Line 649: | ||
{{Alg|F2 (L' U' L U) y (L U' L)|F2L}} | {{Alg|F2 (L' U' L U) y (L U' L)|F2L}} | ||
{{Alg|R F (U R U' R' F') U' R'|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}} | ||
+ | |||
| | | | ||
Line 575: | Line 664: | ||
{{Alg|(R U' R')(F' L' U2 L F)|F2L}} | {{Alg|(R U' R')(F' L' U2 L F)|F2L}} | ||
{{Alg| R U (F R U R' U' F') R'|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" | |-valign="top" | ||
|} | |} | ||
Line 588: | Line 680: | ||
== External Resources == | == External Resources == | ||
=== Beginner === | === Beginner === | ||
− | * [http://rishidoshi.blogspot.com/ RiDo's Hunting Story] | + | * [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 === | === 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://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.cubestation.co.uk/cs2/index.php?page=3x3x3/cfop/f2l/f2l Dan Harris's F2L Cases] | ||
Line 601: | Line 695: | ||
* 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=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 | * 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 === | === 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://www.speedsolving.com/forum/showthread.php?t=15050 Erik Expert F2L tutorial] | ||
* [http://cubefreak.net/advancedf2l/ Cubefreak Advanced F2L] | * [http://cubefreak.net/advancedf2l/ Cubefreak Advanced F2L] | ||
* [http://pagesperso-orange.fr/absolutemind/ms-angl.html Multislotting Tutorial] | * [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]] | [[Category:3x3x3 other substeps]] | ||
__NOTOC__ | __NOTOC__ |
Revision as of 13:09, 24 June 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
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F2L 2
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F2L 3
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F2L 4
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Reposition Edge
F2L 5
If the front left slot is open:
If the back right slot is open:
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F2L 6
If the front left slot is open:
If the back right slot is open:
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F2L 7
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F2L 8
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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:
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F2L 17
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F2L 18
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Pair Made on Side
F2L 19
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F2L 20
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F2L 21
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F2L 22
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Weird
F2L 23
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F2L 24
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Corner in Place, Edge in U Face
F2L 25
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F2L 26
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F2L 27
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F2L 28
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F2L 29
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F2L 30
|
Edge in Place, Corner in U face
F2L 31
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F2L 32
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F2L 33
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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
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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