Blueprint ?-??-83

This is a very rare CBS prototype which was probably sent out to magazine reviewers.  The game is almost the same as the final version, except that the maze solutions are different and the secret word is now "SAPIENCE" which is another word for Wisdom.  It is unknown if these changes were put into the review copy so that reviewers wouldn't be able to figure out the secret word before the contest officially started, or if CBS simply decided to change things around at the last minute.