M2/R2
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 Mslice 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/lslice 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
 M2/R2 tutorial on stefanpochmann.de
 Erik's r2 Tutorial (for 4x4x4 cubes)
 M2 Tutorial on cubefreak.net
 Reddit: What's wrong with R2? (as in the BLD corner method) points out why R2 is not used as much.
 Speedsolving.com: M2/R2 Tutorial (VIDEO)
 Speedsolving.com: Improvements for M2/R2
 Speedsolving.com: M2 Algorithms
 Youtube: M2 / Old Pochmann Blindfold Tutorial
