Sokoban Level 1d

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This is one of the new possible maps for Sokoban Level 1 in UnNetHack. It has 12 boulders and 11 pits, leaving 1 spare boulder. Like all Sokoban levels in UnNetHack, this level may be flipped horizontally or vertically.

  -------------     0 boulder
--|...........|     ^ pit
|.+.........<.|     > starting position/downstairs
|^|...........|---- < upstairs
|^|###########|...| ? scroll of earth
|^#...........|...| # iron bars
|^#.--..0.0....00.|
|^#..|.-----.--.0.|
|^#..|00...|0||.0.|
|^#.--.---.|.--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.

First, fill in the first three pits with the nearest boulders:

  -------------     F dddd l*
--|...........|     G lddd dll*
|.+.........<.|     A lldd dddd lll*
|^|...........|----
|^|###########|...|
|^#...........|...|
|^#.--..A.B....CD.|
|^#..|.-----.--.E.|
|^#..|FG...|H||.I.|
|^#.--.---.|.--J..|
|^#....---.K.L....|
|.-##-.......--...|
|..^^^.......|-----
|??---.......|
---- ------@--
          ---

Collect the two scrolls of earth and solve two more boulders:

  -------------     B llll dddd ddll lllu u*
--|...........|     K lddl llll llll uuu*
|.+.........<.|
|^|...........|----
|^|###########|...|
|^#...........|...|
|^#.--....B....CD.|
|^#..|.-----.--.E.|
|^#..|.....|H||.I.|
|^#.--.---.|.--J..|
|^#....---.K.L....|
|.-##-.......--...|
|...@........|-----
|??---.......|
---- ------>--
          ---

Now open up the room on the right by solving the boulder at the bottom entrance and another nearby almost the same way:

  -------------     L rrrl llll lddl llll llll uuuu*
--|...........|     H dddu rrrr llll lldd llll llll luuu uu*
|.+.........<.|
|^|...........|----
|^|###########|...|
|^#...........|...|
|^#.--.........CD.|
|^#..|.-----.--.E.|
|^#..|.....|H||.I.|
|.#.--.---.|.--J..|
|@#....---...L....|
|.-##-.......--...|
|............|-----
|..---.......|
---- ------>--
          ---

One specific boulder needs to be pushed to avoid the remaining boulders getting stuck, but after that the solution is straightforward:

  -------------     E l
--|...........|     I ddll llll ddll llll lllu uuuu u*
|.+.........<.|     J dlll lldd llll llll luuu uuuu*
|^|...........|---- D dddd llll lldd llll llll luuu uuuu u*
|^|###########|...| C r
|^#...........|...| E dddl llll ddll llll lllu uuuu uuuu*
|^#.--.........CD.|
|.#..|.-----.--.E.|
|@#..|.....|.||.I.|
|.#.--.---.|.--J..|
|.#....---........|
|.-##-.......--...|
|............|-----
|..---.......|
---- ------>--
          ---

The level is now finished:

  -------------
--|...........|
|.+.........<.|
|.|...........|----
|@|###########|...|
|.#...........|...|
|.#.--..........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: