Sokoban Level 2b
Although this sokoban level has the most boulders, it is not very hard. There are 20 boulders and 16 pits.
0 boulder ^ pit @ starting position/downstairs < upstairs
----------- ----------- |....|....--- |.........| |..00|00...@| |.........| |.....0...--- |.........| |....|....| |....<....| |-.--------- |.........| |..0.|.....| |.........| |.00.|0.0.0| |.........| |..0.....0.| |.........| |.000|0..0.----------------+| |....|..0.0.^^^^^^^^^^^^^^^.| -----------------------------
Strategy
The following solution solves the level without putting any blocks in an immobile position. Faster solutions which do not necessarily leave every boulder free might exist. You can watch a video of this solution.
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.
Make way to the fourth room (lower right) by storing boulders in earlier rooms. It is not necessary to store as many boulders as in this example:
----------- ----------- E lllr rrrr u |....|....--- |.........| G uuuu u |..AB|CD...@| |.........| N uuuu uur |.....E...--- |.........| L rrrr r |....|....| |....<....| |-.--------- |.........| |..F.|.....| |.........| |.GH.|I.J.K| |.........| |..L.....M.| |.........| |.NOP|Q..R.----------------+| |....|..S.T.^^^^^^^^^^^^^^^.| -----------------------------
Clear the 4th room with the exception of I and Q:
----------- ----------- R r |....|....--- |.........| T rr* |.GAB|CDE..>| |.........| S rrrr r* |..N......--- |.........| M ddrr rrr* |....|....| |....<....| R drrr rr* |-.--------- |.........| K dddr rrrr r* |..F.|.....| |.........| L rrdd rrrr rrr* |..H.|I.J.K| |.........| J dddr rrrr rrrr r* |......@LM.| |.........| |..OP|Q..R.----------------+| |....|..S.T.^^^^^^^^^^^^^^^.| -----------------------------
Clear the 3rd room (lower left) with the exception of F:
----------- ----------- O urrr rrrr ddrr rrrr rrr* |....|....--- |.........| P urrr rrrd drrr rrrr rrr* |.GAB|CDE..>| |.........| H ldrr rrrr rrdd rrrr rrrr rrr* |..N......--- |.........| |....|....| |....<....| |-.--------- |.........| |..F.|.....| |.........| |..H.|I....| |.........| |..........| |.........| |..OP|Q....----------------+| |....|.............^^^^^^^^.| -----------------------------
Clear the 2nd room (upper left) with the exception of B, and finish off with the two boulders from the 4th room.:
----------- ----------- G dddd ddrr rrrr rrdd rrrr rrrr rrrr* |....|....--- |.........| N lddd ddrr rrrr rrdd rrrr rrrr rrrr r* |.GAB|CDE..>| |.........| A ddld dddr rrrr rrrd drrr rrrr rrrr rrr* |..N......--- |.........| Q ulll rrrr rrrd drrr rrrr rrrr rrrr* |....|....| |....<....| I dlll rrrr rrrd drrr rrrr rrrr rrrr r* |-.--------- |.........| |..F.|.....| |.........| |.@..|I....| |.........| |..........| |.........| |....|Q....----------------+| |....|................^^^^^.| -----------------------------
The level is now finished:
----------- ----------- |....|....--- |.........| |...B|CDE..>| |.........| |.........--- |.........| |....|....| |....<....| |-.--------- |.........| |..F.|.....| |.........| |....|.....| |.........| |..........| |.........| |....|.....----------------+| |....|.....................@| -----------------------------
Next level
After this level, you will face either of the following levels:
Sokoban Level 3a
-------- ---.|....| |...0....|---------- |.-.00-00|.|.......| |.00-......|.......| |.-..0.|...|.......| |....-0--0-|...<...| |..00..0...|.......| |.--...|...|.......| |....-0|---|.......| ---..0.-----------+| |..0@^^^^^^^^^^^.| ------------------ |
Sokoban Level 3b
-------------------- |........|...|.....| |.00..-00|.-.|.....| |..|.0.0.|00.|.....| |-.|..-..|.-.|..<..| |...--.......|.....| |...|.0.-...-|.....| |.0.|0.|...--|.....| |-0.|..-----------+| |..0....^^^^^^^^^^.| |...|.@------------- -------- |