There is no solution for level 93.At the bottom level (on left side) it is already blocked by 3 bricks.I have searched out a way to goto level 94. That is

To move on to puzzle 94 close out Soukoban and run regedit.exe.
Go to HKEY_CURRENT_USER -> Software -> Soukoban.                                             In “Config” double click on “cfg“and change Value to 5d from 0 .
Then double click on “cfg2“and change Value to 5e from 0 .
Close out regedit and open Soukoban and you will be on puzzle 94.

BE CAREFULL !!

Going through this way even a single change for other system programing may corrupt your system.