SORRY CHRISTINA! Re LEVEL 51 : I must have crossed my eyes. I was obviously describing a different level!!
Heres how I do the real level 51
DRD, L, U, U, LD, U, L, L, LL, D, D, L, UUL, U, L, LLU, U, R, D, RRDDR, D, D, U, R, U, LUUU, U
The commas separate slides, meaning you have to wait til you hit tile before you can take next step. The together letters are key strokes that can be made as fast as your lightening fingers can make them!
Sorry about the screw-up!