This version of the third level of sokoban has 16 boulders and 11 pits. 0 boulder ^ pit @ starting position/downstairs < upstairs -------- ---.|....| |...0....|---------- |.-.00-00|.|.......| |.00-......|.......| |.-..0.|...|.......| |....-0--0-|...<...| |..00..0...|.......| |.--...|...|.......| |....-0|---|.......| ---..0.-----------+| |..0@^^^^^^^^^^^.| ------------------