Sokoban Level 1p

Sokoban Level 1p is a new possible map for Sokoban that appears in GruntHack. It has 10 boulders and 8 pits, leaving two spare boulders.

             --- 
     ----   -->-- 0 boulder
     |??-----...| ^ pit
     |..^^^..00.| > starting position/downstairs
     |^----.|.0.| < upstairs
     |^|---.|.0.| ? scroll of earth
     |^||.0.|0..|
     |^||..0|.0.|
     |^||.0..0..|
     |<||..--...|
     ------------

Strategy

The following solution solves the level without making any boulders 'stick', but may not be the fastest solution possible; improvements on solving and move organization are welcome.

All boulders are replaced by letters so they can be referred to. Moving the boulders is shortened to r for right, l for left, u for up, d for down. An asterisk is used to denote the last move filled a pit (and thus removed the boulder from the game). So "N ddrr*" means move boulder N two times down and two times to the right into a pit.

First set of moves:

            --- 
    ----   -->-- 
    |..-----...| C l
    |..^^^..AB.| H d
    |^----.|.C.| D d
    |^|---.|.D.| B d
    |^||.E.|F..|
    |^||..G|.H.|
    |^||.I..J..|
    |<||..--...|
    ------------     

Second set of moves:

            --- 
    ----   -->-- 
    |..-----...| A lll*
    |..^^^..A..| B ulll ll*
    |^----.|CB.| D uuul llll l*
    |^|---.|...| H uuuu ulll llll ld*
    |^||.E.|FD.|
    |^||..G|...|
    |^||.I..JH.|
    |<||..--...|
    ------------ 

Pick up the two scrolls of earth to ensure that no monsters get a hold of them; remember to verify their beatitude before reading them in Sokoban, and only do so if you have misplaced or broken some other boulders.

Third set of moves:

            --- 
    ----   -->-- 
    |..-----...| C ulll llll dd*
    |..........| F uuul llll lldd d*
    |.----.|C..| J uuuu ulll llll dddd*
    |^|---.|...|
    |^||.E.|F..|
    |^||..G|...|
    |^||.I..J..|
    |<||..--...|
    ------------

Last set of moves:

            --- 
    ----   -->-- 
    |..-----...| G uuuu llll lddd dd*
    |..........|
    |.----.|...|
    |.|---.|...|
    |.||.E.|...|
    |.||..G|...|
    |^||.I.....|
    |<||..--...|
    ------------