1987 marked the "The Fourth International Obfuscated C Code Contest"

Copyright (c) 1987, Landon Curt Noll & Larry Bassel.
All Rights Reserved.  Permission for personal, educational or non-profit use is
granted provided this this copyright and notice are included in its entirety
and remains unaltered.  All other uses must receive prior permission in writing
from both Landon Curt Noll and Larry Bassel.

The rules for 1987 suggested even more categories than in 1986.  Hints
for what to do and not to do were also given in the rules.  For
example, a simple excessive abuse of /lib/cpp was discouraged unless
the abuse was unusual.  The mailboxes for the contest were moved from
nsc to amdahl.  The practice of posting a preliminary set of rules for
the next year was started this year.

Rules and results were posted to comp.lang.c, comp.unix.wizards with
an announcement in news.announce.important.  Micro/Systems Journal
published the 1987 winners.  Mark Horton included a version of the 1987
winners in an appendix of his C book.  The first announcement of
winners at the Summer 87 Usenix was helped by a small fly that
danced all over the foils.