More an hints collection than a "solution".

Readme created with ARC 3.2 - Copyright (c)1996-99 by Jens Weyer.

============================= Archive contents =============================
Original  Packed Ratio    Date     Time    Name
-------- ------- ----- --------- --------  -------------
    7193    2871 60.0% 03-May-99 22:02:28  karateka.sol
-------- ------- ----- --------- --------
    7193    2871 60.0% 03-May-99 22:03:28   1 files

Operation successful.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 2871    7193  39.9% -lh5- 3544 May  3  1999 karateka.sol
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file     2871    7193  39.9%            May  4  1999