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= | + | |proposers=[[René Schoof]] |
− | |year= | + | |year=1981 |
− | |anames= | + | |anames=First Two Layers |
− | |variants=[[ | + | |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=7.8 [[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 === | ||
− | |||
− | The concept of pairing up four corner/edge pairs was first proposed by [[ | + | 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}} | {{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}} | ||
+ | |||
| | | | ||
Line 49: | Line 62: | ||
{{Alg|y' U' (R' U R)|F2L}} | {{Alg|y' U' (R' U R)|F2L}} | ||
+ | {{Alg|U' (F' U F)|F2L}} | ||
{{Alg|F R' F' R|F2L}} | {{Alg|F R' F' R|F2L}} | ||
{{Alg|d' L' U L|F2L}} | {{Alg|d' L' U L|F2L}} | ||
{{Alg|r U R' U' M|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" | |-valign="top" | ||
Line 65: | Line 81: | ||
{{alg|F' U' F|F2L}} | {{alg|F' U' F|F2L}} | ||
{{Alg|U M R U' R' U M'|F2L}} | {{Alg|U M R U' R' U M'|F2L}} | ||
+ | {{Alg|U r' R2 U' R' U M'|F2L}} | ||
+ | |||
| | | | ||
Line 71: | Line 89: | ||
{{Alg|(R U R')|F2L}} | {{Alg|(R U R')|F2L}} | ||
+ | {{Alg|(U2) L (R U' R') U L'|F2L}} | ||
|-valign="top" | |-valign="top" | ||
Line 86: | Line 105: | ||
{{Alg|(U' R U R') U (R' F R F')|F2L}} | {{Alg|(U' R U R') U (R' F R F')|F2L}} | ||
{{Alg|F2 (L' U' L U) F2|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}} | ||
| | | | ||
Line 97: | Line 122: | ||
{{Alg|U' (r U' R' U) (R U r')|F2L}} | {{Alg|U' (r U' R' U) (R U r')|F2L}} | ||
{{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}} | |
+ | 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 106: | Line 135: | ||
{{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')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}} | |
| | | | ||
Line 115: | Line 145: | ||
{{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}} | ||
− | + | {{Alg|y' R' U' F' U2 F U' R|F2L}} | |
|-valign="top" | |-valign="top" | ||
Line 130: | Line 161: | ||
[[Image:F2L09.png]] | [[Image:F2L09.png]] | ||
− | {{Alg|d (R' U' R U')(R' U' R)|F2L}} | + | {{Alg|U' R U' R' d R' U' R |F2L}} |
− | {{Alg|y2 U' (L U') d | + | {{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|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}} | ||
+ | |||
| | | | ||
Line 139: | Line 180: | ||
{{Alg|U' (R U R' U)(R U R')|F2L}} | {{Alg|U' (R U R' U)(R U R')|F2L}} | ||
− | {{Alg|R d R U R' U2 F'|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" | |-valign="top" | ||
Line 148: | Line 196: | ||
{{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}} | ||
− | + | {{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}} | ||
| | | | ||
Line 161: | Line 212: | ||
{{Alg|R' U2 R2 U R2 U R|F2L}} | {{Alg|R' U2 R2 U R2 U R|F2L}} | ||
{{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}} | ||
+ | If the back right slot is open: | ||
+ | {{Alg|R' U2 R2 U R'|F2L}} | ||
|-valign="top" | |-valign="top" | ||
Line 168: | Line 222: | ||
[[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|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}} | ||
+ | |||
| | | | ||
Line 175: | Line 237: | ||
[[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}} | ||
|-valign="top" | |-valign="top" | ||
Line 189: | Line 252: | ||
{{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|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}} | ||
{{Alg|R U' R U2' R2' U' R2 U' R2'|F2L}} | {{Alg|R U' R U2' R2' U' R2 U' R2'|F2L}} | ||
− | {{Alg|U (R U' R') D (R U' R') D'|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}} | ||
+ | |||
| | | | ||
Line 202: | Line 280: | ||
{{Alg|(R U' R' U) d (R' U' R)|F2L}} | {{Alg|(R U' R' U) d (R' U' R)|F2L}} | ||
{{Alg|(R U' R') U2 (F' U' F)|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" | |-valign="top" | ||
| | | | ||
+ | |||
=== F2L 17 === | === F2L 17 === | ||
[[Image:F2L17.png]] | [[Image:F2L17.png]] | ||
{{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 217: | Line 306: | ||
{{Alg|y (L' U2 L) U (L' U' L)|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 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" | |-valign="top" | ||
|} | |} | ||
Line 230: | Line 323: | ||
{{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}} | ||
| | | | ||
Line 237: | Line 332: | ||
{{Alg|U' F' U2 F2 (R' F' R)|F2L}} | {{Alg|U' F' U2 F2 (R' F' R)|F2L}} | ||
{{Alg|y' U' (R' U2 R) U' (R' U R)|F2L}} | {{Alg|y' U' (R' U2 R) U' (R' U R)|F2L}} | ||
− | {{Alg|d' (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" | |-valign="top" | ||
| | | | ||
Line 243: | Line 345: | ||
=== F2L 21 === | === F2L 21 === | ||
[[Image:F2L21.png]] | [[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|R B U2 B' R'|F2L}} | ||
− | {{Alg|U2 | + | {{Alg|U2 R x' U' R U x R2'|F2L}} |
− | {{Alg| | + | {{Alg|U F R U R' U' R' F' R|F2L}} |
| | | | ||
=== F2L 22 === | === F2L 22 === | ||
[[Image:F2L22.png]] | [[Image:F2L22.png]] | ||
+ | {{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|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|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" | |-valign="top" | ||
Line 265: | Line 373: | ||
[[Image:F2L23.png]] | [[Image:F2L23.png]] | ||
− | |||
− | |||
{{Alg|U2 R2 U2 (R' U' R U') R2|F2L}} | {{Alg|U2 R2 U2 (R' U' R U') R2|F2L}} | ||
{{Alg|U (F R' F' R) U (R U R')|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 === | === F2L 24 === | ||
Line 274: | Line 387: | ||
{{Alg|U F' L' U L F R U R'|F2L}} | {{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' (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|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) (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|U2 F2 U2 (F U F' U) F2|F2L}} | ||
{{Alg|F U (R U' R' F')(R U' R')|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" | |-valign="top" | ||
Line 292: | Line 410: | ||
{{Alg|d' (L' U L) d (R U' R')|F2L}} | {{Alg|d' (L' U L) d (R U' R')|F2L}} | ||
− | {{Alg| | + | {{Alg|d' (L' U L) (F' L F L')|F2L}} |
{{Alg|y U' (L' U' L) U (F U F')|F2L}} | {{Alg|y U' (L' U' L) U (F U F')|F2L}} | ||
{{Alg|U' (F' U F) U (R U' R')|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 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 U R' U2 R U R' U2 R U' R'|F2L}} | ||
Line 300: | Line 419: | ||
{{Alg|(U') F' R U R' U' R' F R|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|(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|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}} | ||
+ | |||
+ | |||
| | | | ||
Line 306: | Line 435: | ||
[[Image:F2L26.png]] | [[Image:F2L26.png]] | ||
− | |||
{{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}} | ||
{{Alg|U (R U' R') (F R' F' R)|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|U R U' M' U R' U' M|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" | |-valign="top" | ||
Line 319: | Line 451: | ||
{{Alg|(R U' R' U)(R U' R')|F2L}} | {{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}} | ||
| | | | ||
Line 325: | Line 459: | ||
[[Image:F2L28.png]] | [[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|y' (R' U R U')(R' U R)|F2L}} | ||
{{Alg|(R U R') U (F' U2 F)|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|(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" | |-valign="top" | ||
Line 337: | Line 477: | ||
{{Alg|y' (R' U' R U)(R' U' R)|F2L}} | {{Alg|y' (R' U' R U)(R' U' R)|F2L}} | ||
{{Alg|U2 (R U' R') y' (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}} | ||
+ | |||
| | | | ||
Line 343: | Line 486: | ||
{{Alg|(R U R' U')(R U R')|F2L}} | {{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" | |-valign="top" | ||
Line 359: | Line 504: | ||
{{Alg|U' R' F R F' R U' R'|F2L}} | {{Alg|U' R' F R F' R U' R'|F2L}} | ||
{{Alg|R U' l U' R' U l'|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}} | ||
| | | | ||
Line 368: | Line 516: | ||
{{Alg|U2 R d' R U R' d R'|F2L}} | {{Alg|U2 R d' R U R' d R'|F2L}} | ||
{{Alg|U R d' R U2 R' d R'|F2L}} | {{Alg|U R d' R U2 R' d R'|F2L}} | ||
− | {{Alg| | + | {{Alg|R2 U R2 U R2 U2 R2|F2L}} |
{{Alg|U2 R2 U2 R2 U' R2 U' 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" | |-valign="top" | ||
Line 377: | Line 526: | ||
[[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|(U' R U' R') U2 (R U' R')|F2L}} | {{Alg|(U' R U' R') U2 (R U' R')|F2L}} | ||
− | {{Alg|y U' (L U' L | + | {{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}} | ||
+ | |||
| | | | ||
Line 384: | Line 539: | ||
[[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|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" | ||
| | | | ||
+ | |||
=== F2L 35 === | === F2L 35 === | ||
[[Image:F2L35.png]] | [[Image:F2L35.png]] | ||
Line 394: | Line 558: | ||
{{Alg|(U' R U R') d (R' U' R)|F2L}} | {{Alg|(U' R U R') d (R' U' R)|F2L}} | ||
{{Alg|U2 (R U' R') U' (F' U' F)|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}} | ||
+ | |||
| | | | ||
Line 401: | Line 568: | ||
{{Alg|d (R' U' R) d' (R U R')|F2L}} | {{Alg|d (R' U' R) d' (R U R')|F2L}} | ||
{{Alg|y U2 (L' U L) U (F U F')|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" | |-valign="top" | ||
|} | |} | ||
Line 413: | Line 585: | ||
Solved | Solved | ||
+ | |||
| | | | ||
Line 422: | Line 595: | ||
{{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 430: | Line 607: | ||
{{Alg|(R U' R') U' (R U R') U2 (R U' R')|F2L}} | {{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|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 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}} | ||
+ | |||
| | | | ||
Line 440: | Line 623: | ||
{{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|y' R2 U2 R U R' U R U2 R|F2L}} | ||
+ | |||
|-valign="top" | |-valign="top" | ||
| | | | ||
Line 446: | Line 631: | ||
[[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}} | ||
{{Alg|(R U' R) y (U R U' R') y' R2|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}} | ||
+ | |||
| | | | ||
Line 460: | Line 650: | ||
{{Alg|y (L' U L) d' (L U L' U) (L U L')|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|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" | |-valign="top" | ||
|} | |} | ||
− | == See | + | == See also == |
* [[Keyhole First Two Layers]] | * [[Keyhole First Two Layers]] | ||
− | * [[ | + | * [[Intuitive solving]] |
− | * [[ | + | * [[Advanced F2L]] |
− | * [[ | + | * [[ZBLS]] |
− | |||
− | |||
* [[Fridrich Method]] | * [[Fridrich Method]] | ||
* [[Petrus Method]] | * [[Petrus Method]] | ||
== External Resources == | == External Resources == | ||
− | * [http://rishidoshi.blogspot.com/ RiDo's Hunting Story] | + | === 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://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] | ||
+ | * [http://www.opticubes.com/cubing/f2l/ Opticubes.com Optimal F2L Cases] | ||
* [http://jmbaum.110mb.com/f2l.htm Jason Baum's 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.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 | ||
+ | |||
+ | === 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/ | ||
* [http://pagesperso-orange.fr/absolutemind/ms-angl.html Multislotting Tutorial] | * [http://pagesperso-orange.fr/absolutemind/ms-angl.html Multislotting Tutorial] | ||
− | |||
− | |||
− | [ | + | == F2L Trainers == |
− | [[Category:3x3x3 | + | [http://expertcuber.by/ ExpertCuber.by] |
+ | |||
+ | [[Category:3x3x3 other substeps]] | ||
__NOTOC__ | __NOTOC__ |
Revision as of 08:02, 11 December 2018
|
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
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
Advanced
- Youtube: Viktor Danilov Expert F2L (Russian language)
- Database: Website for Viktor Danilov F2L series
- Erik Expert F2L tutorial
- Cubefreak Advanced F2L
- Multislotting Tutorial
F2L Trainers