Blades of Steel was released in 1990 by Konami for the Commodore 64. Most people will remember this great game from their old Nintendo NES days. This was also a fun game for the Commodore 64.

The disk do not have any copy protection on it, but instead the game used a “Code Sheet”.

You needed to enter a four digita password code before being able to play the game.

Again Thanks to: Craig A. Ernster we now have that code sheet online.

Here it is in PDF:
Blades of Steel Password Book