Difference between revisions of "M2/R2"

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M2 and R2 are blindsolving methods developed by [[Stefan Pochmann]]. M2 is for solving edges and R2 is for solving corners. The methods solve one piece at a time, using [[conjugates]] composed of M2 or R2 to swap the contents of a 'buffer' location with a target location. M2 is a popular upgrade from Old Pochmann edges as the swapping algorithm is shorter.
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M2 and R2 are blindsolving methods developed by [[Stefan Pochmann]]. M2 is for solving edges (or midges) and R2 is for solving corners. The methods solve one piece at a time, using [[conjugates]] composed of M2 or R2 to swap the contents of a 'buffer' location with a target location. M2 is a popular upgrade from Old Pochmann edges as the swapping algorithm is shorter.
NOTE: r2 and R2 are slightly different. r2 (with lowercase r) is for [[4x4x4 Cube|4x4 cubes]]. See external links.
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'''Note''': r2 and R2 are different. r2 (with a lowercase r) is for solving wing pieces on puzzles such as the [[4x4x4 cube|4x4x4]].
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== M2 Algs ==
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{| class="wikitable"
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|-
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! Target !! Algorithm
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|-
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| UB || M2
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|-
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| FR || U R U' M2 U R' U'
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|-
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| DR || U R2 U' M2 U R2 U'
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|-
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| BR || U R' U' M2 U R U'
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|-
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| UR || R' U R U' M2 U R' U' R
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|-
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| FL || U' L' U M2 U' L U
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|-
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| DL || U' L2 U M2 U' L2 U
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|-
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| BL || U' L U M2 U' L' U
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|-
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| UL || L U' L' U M2 U' L U L'
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|-
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| RU || x' U' R U M2 U' R' U x
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|-
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| RF || x' U' R2 U M2 U' R2 U x
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|-
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| RD || x' U' R' U M2 U' R U x
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|-
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| RB || x' R' U' R U M2 U' R' U R x
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|-
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| LU || x' U L' U' M2 U L U' x
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|-
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| LF || x' U L2' U' M2 U L2 U' x
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|-
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| LD || x' U L U' M2 U L' U' x
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|-
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| LB || x' L U L' U' M2 U L U' L' x
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|-
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| DB || M U2 M U2
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|-
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| UF || U2 M' U2 M'
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|}
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=== Additional M-slice M2 Algs ===
  
== Additional M2 Algs ==
 
 
'''Shoot to FU''':  
 
'''Shoot to FU''':  
 
* D M' U R2 U' M U R2 U' D' M2
 
* D M' U R2 U' M U R2 U' D' M2
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* M2' D R' U R' U' M' U R U' M R D'
 
* M2' D R' U R' U' M' U R U' M R D'
 
* U2 F2 U M' U' F2 U M U  (no M2)
 
* U2 F2 U M' U' F2 U M U  (no M2)
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=== r2 Algs ===
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r2 is like M2 but for wings, such as for 4BLD. Most r2 targets are just the M2 algorithms with M2 replaced with r2.
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The buffer is DFr. As an example, to shoot to FRd, one can do U R U' r2 U R' U'. There are different algorithms used for r/l-slice wings, though.
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{| class="wikitable"
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|-
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! Target !! Algorithm
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|-
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| UBr || r2
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|-
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| FUr || F d R U R' d' R U' R' F' r2
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|-
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| BDr || r2 F R U R' d R U' R' d' F'
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|-
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| BUl || x' F U' R F' U r2 U' F R' U F' x
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|-
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| UFl || x' l' F U' R F' U r2 U' F R' U F' l x
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|-
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| FDl || x' l2 F U' R F' U r2 U' F R' U F' l2 x
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|-
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| DBl || x' l F U' R F' U r2 U' F R' U F' l' x
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|}
  
 
== See also ==
 
== See also ==
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== External links ==
 
== External links ==
* [http://www.stefan-pochmann.de/spocc/blindsolving/M2R2/ Tutorial on stefan-pochmann.de]
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* [https://web.archive.org/web/20090202214856/http://www.stefan-pochmann.de/spocc/blindsolving/M2R2/ M2/R2 tutorial on stefan-pochmann.de]
* [http://erikku.er.funpic.org/rubik/r2.html Erik's r2 Tutorial] (for 4x4x4 cubes)
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* [https://web.archive.org/web/20120815003358/http://erikku.er.funpic.org/rubik/r2.html Erik's r2 Tutorial] (for 4x4x4 cubes)
 
* [http://www.cubefreak.net/bld/m2_guide.html M2 Tutorial on cubefreak.net]
 
* [http://www.cubefreak.net/bld/m2_guide.html M2 Tutorial on cubefreak.net]
* [http://kerulo.uw.hu/rubik/R2+.html R2+] an improvement on R2 by Endrey Marcell, based on using 3-cycles to solve pieces in the R-layer.
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* Reddit: [https://old.reddit.com/r/Cubers/comments/1qmzhc/whats_wrong_with_r2_as_in_the_bld_corner_method/ What's wrong with R2? (as in the BLD corner method)] points out why R2 is not used as much.
* Youtube: [http://www.youtube.com/watch?v=ncpkVvIEcKc M2 / Old Pochmann Blindfold Tutorial]
 
 
* Speedsolving.com: [http://www.speedsolving.com/forum/showthread.php?t=11253 M2/R2 Tutorial (VIDEO)]
 
* Speedsolving.com: [http://www.speedsolving.com/forum/showthread.php?t=11253 M2/R2 Tutorial (VIDEO)]
 
* Speedsolving.com: [http://www.speedsolving.com/forum/showthread.php?t=1768 Improvements for M2/R2]
 
* Speedsolving.com: [http://www.speedsolving.com/forum/showthread.php?t=1768 Improvements for M2/R2]
 
* Speedsolving.com: [http://www.speedsolving.com/forum/showthread.php?t=19014 M2 Algorithms]
 
* Speedsolving.com: [http://www.speedsolving.com/forum/showthread.php?t=19014 M2 Algorithms]
 
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* Youtube: [http://www.youtube.com/watch?v=ncpkVvIEcKc M2 / Old Pochmann Blindfold Tutorial]
  
 
[[Category:Blindsolving methods]]
 
[[Category:Blindsolving methods]]
 
[[Category:Blindfold cubing terminology]]
 
[[Category:Blindfold cubing terminology]]
 
{{Stub}}
 
{{Stub}}

Revision as of 22:24, 10 December 2022

M2 and R2 are blindsolving methods developed by Stefan Pochmann. M2 is for solving edges (or midges) and R2 is for solving corners. The methods solve one piece at a time, using conjugates composed of M2 or R2 to swap the contents of a 'buffer' location with a target location. M2 is a popular upgrade from Old Pochmann edges as the swapping algorithm is shorter.

Note: r2 and R2 are different. r2 (with a lowercase r) is for solving wing pieces on puzzles such as the 4x4x4.

M2 Algs

Target  Algorithm
UB M2
FR U R U' M2 U R' U'
DR U R2 U' M2 U R2 U'
BR U R' U' M2 U R U'
UR R' U R U' M2 U R' U' R
FL U' L' U M2 U' L U
DL U' L2 U M2 U' L2 U
BL U' L U M2 U' L' U
UL L U' L' U M2 U' L U L'
RU x' U' R U M2 U' R' U x
RF x' U' R2 U M2 U' R2 U x
RD x' U' R' U M2 U' R U x
RB x' R' U' R U M2 U' R' U R x
LU x' U L' U' M2 U L U' x
LF x' U L2' U' M2 U L2 U' x
LD x' U L U' M2 U L' U' x
LB x' L U L' U' M2 U L U' L' x
DB M U2 M U2
UF U2 M' U2 M'

Additional M-slice M2 Algs

Shoot to FU:

  • D M' U R2 U' M U R2 U' D' M2
  • y' U' M U' R2 U M' U' R2 U2 y (no M2)
  • x F E R U R' E' R U' R' F' x' (no M2)

Shoot to BU

  • U B' R U' B M2 B' U R' B U'
  • B' U R' B U' M2 U B' R U' B
  • F' D R' F D' M2 D F' R D' F
  • U R' U' l U' R U M2 U' R' U l' U R U'
  • (U' M')*3 (U' M) (U' M')*4

Shoot to BD:

  • M2' D U R2 U' M' U R2 U' M D'
  • M2 B' U' R' U M' U' R U M B
  • D2 F2 U M' U' F2 D2 U' M' U
  • M2' D R' U R' U' M' U R U' M R D'
  • U2 F2 U M' U' F2 U M U (no M2)

r2 Algs

r2 is like M2 but for wings, such as for 4BLD. Most r2 targets are just the M2 algorithms with M2 replaced with r2. The buffer is DFr. As an example, to shoot to FRd, one can do U R U' r2 U R' U'. There are different algorithms used for r/l-slice wings, though.

Target  Algorithm
UBr r2
FUr F d R U R' d' R U' R' F' r2
BDr r2 F R U R' d R U' R' d' F'
BUl x' F U' R F' U r2 U' F R' U F' x
UFl x' l' F U' R F' U r2 U' F R' U F' l x
FDl x' l2 F U' R F' U r2 U' F R' U F' l2 x
DBl x' l F U' R F' U r2 U' F R' U F' l' x

See also

External links

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