Edge Special Cases

Question 1

Q

Answer 1

U B’ R U’ B (M2) B’ U R’ B U’

Question 2

A

Answer 2

M2

Question 3

C

Answer 3

U2 M’ U2 M’

Question 4

I

Answer 4

D M’ (U R2 U’) M (U R2 U’) D’ (M2)

Question 5

W

Answer 5

M U2 M U2

Question 6

S

Answer 6

(M2) D (U R2 U’) M’ (U R2 U’) M D’