---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.00....|.....|^|
 |...|.0..0..|.....|^|
 |..0|---0---|..<..|^|
 |.0.--......|.....|^|
 |..00.0.....-------^|
 ---.--.00|..^^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Label each bouler for easy reference:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.AB....|.....|^|
 |...|.C..D..|.....|^|
 |..E|---F---|..<..|^|
 |.G.--......|.....|^|
 |..HJ.K.....-------^|
 ---.--.LM|..^^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Move M north:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.AB....|.....|^|
 |...|.C..D..|.....|^|
 |..E|---F---|..<..|^|
 |.G.--..M...|.....|^|
 |..HJ.K.@...-------^|
 ---.--.L.|..^^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Then slide M one tile east, so that we can
get to F and push it two tiles north:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.ABF...|.....|^|
 |...|.C.@D..|.....|^|
 |..E|---.---|..<..|^|
 |.G.--...M..|.....|^|
 |..HJ.K.....-------^|
 ---.--.L.|..^^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Push D one tile east, just to
get it out of the way for the moment:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.ABF...|.....|^|
 |...|.C..@D.|.....|^|
 |..E|---.---|..<..|^|
 |.G.--...M..|.....|^|
 |..HJ.K.....-------^|
 ---.--.L.|..^^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Can it really be as easy as now
pushing F south four tiles, then
pushing F east and taking it out?
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.AB....|.....|^|
 |...|.C...D.|.....|^|
 |..E|---.---|..<..|^|
 |.G.--..@M..|.....|^|
 |..HJ.K.F...-------^|
 ---.--.L.|..^^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Yeah, I think maybe it can...
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.AB....|.....|^|
 |...|.C...D.|.....|^|
 |..E|---.---|..<..|^|
 |.G.--...M..|.....|^|
 |..HJ.K.....-------^|
 ---.--.L.|.@.^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Stow M where F was for now:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.ABM...|.....|^|
 |...|.C.@.D.|.....|^|
 |..E|---.---|..<..|^|
 |.G.--......|.....|^|
 |..HJ.K.....-------^|
 ---.--.L.|...^^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---


Push L east, one tile north, east,
and take it out:

             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.ABM...|.....|^|
 |...|.C...D.|.....|^|
 |..E|---.---|..<..|^|
 |.G.--......|.....|^|
 |..HJ.K.....-------^|
 ---.--...|..@.^^^^..|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

The way is now clear to take
M, then C, D, B, and A:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.......|.....|^|
 |...|.......|.....|^|
 |..E|---.---|..<..|^|
 |.G.--......|.....|^|
 |..HJ.K.....-------.|
 ---.--...|.........@|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Push K one tile south:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.......|.....|^|
 |...|.......|.....|^|
 |..E|---.---|..<..|^|
 |.G.--......|.....|^|
 |..HJ.@.....-------.|
 ---.--K..|..........|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Go around the north side and push
G one tile north:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.......|.....|^|
 |...|.......|.....|^|
 |.GE|---.---|..<..|^|
 |.@.--......|.....|^|
 |..HJ.......-------.|
 ---.--K..|..........|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Push H one tile south, and take J:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.......|.....|^|
 |...|.......|.....|^|
 |.GE|---.---|..<..|^|
 |...--......|.....|.|
 |...........-------@|
 ---H--K..|..........|
   |.--...|--------..|
   |......|       ----
   --->----
     ---

Now push K one tile north and take it:
             ---------
 ------------|.....+.|
 |...........|.....|^|
 |.---.......|.....|^|
 |...|.......|.....|^|
 |.GE|---.---|..<..|.|
 |...--......|.....|@|
 |...........-------.|
 ---.--K..|..........|
   |.--...|--------..|
   |......|       ----
   --->----
     ---


From there it's easy.  What remains
can be taken in any order.