EG-1 21    

(U) F' U2 R U2 R' U2 F

Alternate Algorithms

• (U') R U' R2 F2 R F' U R U R'
• (U) R U R’ U F’ R U R’ U’ R U R2 F2 R
• (U) R U R’ U F’ R U R’ U’ R’ F2 R2 U’ R’

Setup

Recognition