How do you beat Bloxorz level 12?

Level 12 (*this crosses a hole, which ordinarily loses, but it is the exit)

L, D, R, U, R, U, R, U, R, U, L, D, R, U, R3,

D2, L, D, R, U, L, D, R, U, L, D, L, U, R, U3, L3, (X)

R3, D3, L, D, R, U2, R, D, L, D, R, U3, R, U, (X)

D, L, D3, L, U, R, U2, L3, U, L, D, R2, U, L, D3, L