Sokoban Level 1b

This sokoban level has the lowest amount of pits with respect to boulders. The level is not very hard. There are 10 boulders and 9 pits.

0 boulder
^ pit
@ starting position/downstairs
< upstairs
? scroll of earth

------  -----
|....|  |...|
|.0..----.0.|
|.0......0..|
|..---@---0.|
|---------.---
|..^^^<|.....|
|..----|0....|
--^|   |.0...|
 |^-----.0...|
 |..^^^^0.0..|
 |??----------
 ----

Strategy

The following solution solves the level without putting any blocks in an immobile position. Faster solutions which do not leave every boulder free exist.

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 Nddrr* means move boulder N two times down and two times to the right into a pit.

------  -----
|....|  |...|
|.A..----.B.|
|.C......D..|
|..---@---E.|
|---------.---
|..^^^<|.....|
|..----|F....|
--^|   |.G...|
 |^-----.H...|
 |..^^^^I.J..|
 |??----------
 ----

Make some room and move to the lower right room.

Ar
Cu
Drlllllll
Eddd

------  -----
|....|  |...|
|.CA.----.B.|
|..D........|
|..---@---..|
|---------.---
|..^^^<|.....|
|..----|F.E..|
--^|   |.G...|
 |^-----.H...|
 |..^^^^I.J..|
 |..----------
 ----

Clean the lower right room.

Hl
Il*
Jllll*
Edddlllll*
Gddlllll*
Hdllllllu*
Fdddlllllluu*

Pick up the two scrolls of earth. Remember to '#name' them and do not read them in sokoban except when you misplaced some other boulders. First check whether they are blessed or cursed.

------  -----
|....|  |...|
|.CA.----.B.|
|..D........|
|..--->---..|
|---------.---
|..^^^<|.....|
|..----|.....|
--.|   |.....|
 |.-----.....|
 |...........|
 |.@----------
 ----

Finish the level with three of the remaining boulders.

Bddddddddlllllllluuuur*
Drrrrrrrdddddddlllllllluuuurr*
Cdrrrrrrrrdddddddlllllllluuuurrr*

------  -----
|....|  |...|
|..A.----...|
|...........|
|..--->---..|
|---------.---
|....@<|.....|
|..----|.....|
--.|   |.....|
 |.-----.....|
 |...........|
 |..----------
 ----