This solution is untested.
The Snake
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The Label the Boulders
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Step One: Get Up There
  1. Push B one tile west.
  2. Push A south and take it to the first hole.
  3. Push E two tiles north.
  4. Push H two tiles west.
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Step Two: Left Side
  1. Push D two tiles south. Go around past G.
  2. Push D two tiles east, then south and take it.
  3. Go around past G and J. Push C south.
  4. Push C two tiles east. Take it like D.
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Step Three: Keep Going
  1. Push B one west, one south, two east; take it.
  2. Push H four south, two east, and take it.
  3. Push J three tiles south; go around.
  4. Push J one east and take it like H.
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Step Four: Finish
  1. Push F two south, four west, and take it.
  2. Push E four south, two west, and take it.
  3. Push M three south, one west; take it like E.
  4. Push G two west, three south, two east; take it.
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