Sokoban Level 1c

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This is one of the new possible maps for Sokoban Level 1 in UnNetHack, and one of 2 new maps for Sokoban Level 1 in SLASH'EM. It has 10 boulders and 9 pits, leaving 1 spare boulder. Like all Sokoban levels in UnNetHack, this level may be flipped horizontally or vertically.

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

Strategy

The following solution may not be very fast or organized. Improvements welcome. Like all Sokoban levels it can be solved without making any boulders 'stick'.

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.

This is the starting position. First, push the closest boulder into a pit:

     -------                  F d
     |..|..|     --------     G rrrr r*
------..A..--- ---......---
|......---...| |?.........|
|.|.|...B..|.--|........|.---
|.|C--..|..|...-#-#-#-#--...|
|.....DE|FG..@.^^^^^^^^^..<.|
|.|H--..|..|...-#-#-#-#--...|
|.|.|...I..|.--|........|.---
|......---...| |?.........|
------..J..--- ---......---
     |..|..|     --------
     -------

Open up the way to the back area:

     -------                  B ll
     |..|..|     --------     D d
------..A..--- ---......---   B rrrr ddrr rrrr*
|......---...| |?.........|
|.|.|...B..|.--|........|.---
|.|C--..|..|...-#-#-#-#--...|
|.....DE|....>@.^^^^^^^^..<.|
|.|H--..|F.|...-#-#-#-#--...|
|.|.|...I..|.--|........|.---
|......---...| |?.........|
------..J..--- ---......---
     |..|..|     --------
     -------

This makes a few more boulders very easy to deal with:

     -------                  A rrdd ddrr rrrr r*
     |..|..|     --------     E uurr rddr rrrr rrr*
------..A..--- ---......---   D uuur rrrd drrr rrrr rr*
|......---...| |?.........|   F uuur ddrr rrrr rrrr*
|.|.|......|.--|........|.---
|.|C--..|..|...-#-#-#-#--...|
|......E|....>.@.^^^^^^^..<.|
|.|H--D.|F.|...-#-#-#-#--...|
|.|.|...I..|.--|........|.---
|......---...| |?.........|
------..J..--- ---......---
     |..|..|     --------
     -------

The final boulders finish this level:

     -------                  J rruu uurr rrrr rrrr r*
     |..|..|     --------     I rruu rrrr rrrr rrrr*
------.....--- ---......---   H urrr rddr rruu rrrr rrrr rrrr r*
|......---...| |?.........|
|.|.|......|.--|........|.---
|.|C--..|..|...-#-#-#-#--...|
|.......|....>.....@.^^^..<.|
|.|H--..|..|...-#-#-#-#--...|
|.|.|...I..|.--|........|.---
|......---...| |?.........|
------..J..--- ---......---
     |..|..|     --------
     -------

Pick up the two scrolls of earth and check under the final boulder in case an item happens to be underneath.

     -------
     |..|..|     --------
------.....--- ---......---
|......---...| |?.........|
|.|.|......|.--|........|.---
|.|C--..|..|...-#-#-#-#--...|
|.......|....>........@...<.|
|.|.--..|..|...-#-#-#-#--...|
|.|.|......|.--|........|.---
|......---...| |?.........|
------.....--- ---......---
     |..|..|     --------
     -------

Next level

UnNetHack's Sokoban branch has only three levels per game, collapsing the 'second' levels into the first floor, so the first level leads straight to the pool of third levels: