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 | {{Substep Infobox | ||
|name=F2L | |name=F2L | ||
Line 54: | 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' U f R' f' |F2L}} | ||
| | | | ||
Line 60: | 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 68: | 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 75: | 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 88: | 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 194: | 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 210: | 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}} | ||
− | + | If the back right slot is open: | |
+ | {{Alg|R' U2 R2 U R'|F2L}} | ||
|-valign="top" | |-valign="top" | ||
Line 225: | Line 235: | ||
{{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 267: | Line 278: | ||
{{Alg|U (R U' R') D (R U' R') D'|F2L}} | {{Alg|U (R U' R') D (R U' R') D'|F2L}} | ||
{{Alg|R F U F' U' R'|F2L}} | {{Alg|R F U F' U' R'|F2L}} | ||
+ | |||
+ | | | ||
=== F2L 16 === | === F2L 16 === | ||
Line 373: | Line 386: | ||
{{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|R2 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 400: | 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 412: | 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|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 424: | 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 429: | 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}} | ||
Line 534: | Line 557: | ||
{{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}} | {{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|E' R U R' E|F2L}} | ||
− | {{Alg| | + | {{Alg|u' F' U F E|F2L}} |
Line 559: | 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 582: | 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 597: | 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 604: | 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|y' R2 U2 R U R' U R U2 R|F2L}} | ||
|-valign="top" | |-valign="top" | ||
Line 617: | 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 629: | 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 646: | Line 684: | ||
=== 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 656: | 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 === | ||
Line 663: | Line 704: | ||
* [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 == | == F2L Trainers == |
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
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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:
|
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
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Edge in Place, Corner in U face
F2L 31
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F2L 32
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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