Hint in Beginner-I.lvl #1764, "sokoban mean water???"
I don't know much about sokoban, but I collected the following information.
Sokoban was introduced for the first time in 1982 by Thinking Rabbit, a computer games company in the town of Takarazuka, Japan. The game was invented by Hiroyuki Imabayashi, President of Thinking Rabbit. First versions in Europe were published by Spectrum Holobyte (1984 Apple II E).
Sokoban (originally Soukoban) is Japanese for warehouse keeper. The guy is the only one working for the warehouse and he needs to figure out how to push the scattered crates (boxes) to the their correct position in the room, indicated by a mark (paint) on the floor. He is not strong enough to lift one crate over another and he isn't strong enough to pull them either. He can only push one crate at a time; two crates at once are already too heavy. He occupies one square of space as the crate does, so if a crate is blocking his path, he'll need to find a clear path to reach the other side. He cannot climb over it, of course.
The player is given the top view of the warehouse to help the warehouse keeper to find the right way through the labyrinth of walls and crates and move all the crates to the intended target spot in the warehouse in order to proceed to the next level/warehouse.
Example:
####
#### #
#@$ # #
# $$$ #
##.#. #
# ..# #
# #.* #
# $.$ #
## #
######
Author: D. Holland
Key:
@ = the warehouse
keeper (when not standing on a target spot)
+ = the warehouse
keeper (when standing on a target spot)
# = a wall
$ = a crate (when
not standing on a target spot)
* = a crate (when
standing on a target spot)
. = a target
spot (with nothing standing on it)
a space = an
empty square
Bye,
Suyono