IOCCC

The International Obfuscated C Code Contest

Winning entries

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The official URL for this page is http://www.ioccc.org/years-spoiler.html

Copyright © Landon Curt Noll, Jeremy Horn, Peter Seebach and Leonid A. Broukhis, 1999.
All Rights Reserved.
Permission for personal, education or non-profit use is granted provided this copyright and notice are included in its entirety and remains unaltered. All other uses must receive prior permission in writing from the contest judges.




PREVIOUS IOCCC WINNERS

[ 1998 | 1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | 1989 | 1988 | 1987 | 1986 | 1985 | 1984 | ALL ]



1984
1st International Obfuscated C Code Contest

anonymous - prints hello world, where read is write

decot - prints garbage, weird cpp defines (keywords for others)

laman - prints spiralling numbers, laid out in columns

mullender - hardcoded vax and pdp-11 code to move :-) across the screen



1985
2nd International Obfuscated C Code Contest

applin - one-liner to print hello world, with execlp

august - cpp obfuscated, compressed, main-recursive primes in binary

lycklama - heavily cpped with o_oo identifiers, scrolls text right

shapiro - two defines, one 7-liner, results in a maze

sicherman - rot13 with strange #defs that create comment headers etc.



1986
3rd International Obfuscated C Code Contest

applin - hello world works under cc, /bin/sh, and f77

august - struct-heavy e-computation, memory allocation with sbrk

bright - hex dump, cpp compressed, uses lost of << for constants

hague - morse code filter written with 'DIT DAH _DIT DIT_DAH'

holloway - prints hello world! via a recursive main

marshall - train engine-shaped program prints "choo choo"

pawka - prints 'obfuscated?' big, uses xyyyx idents...

stein - prints HHMMSS in UTC time

wall - dvorak keyboard emulator



1987
4th International Obfuscated C Code Contest

biggar - program: "P;" defined on command line

heckbert - obfuscated fold program

hines - counts goto's, all ids anagrams of 'goto', all flow w goto

korn - one-liner that prints a message on a Un*x system

lievaart - very good othello player

wall - roman numeral -> decimal and vice versa conversion

westley - individually palindromic lines prints a palindrome



1988
5th International Obfuscated C Code Contest

applin - massive #define stuff, includes itself; prints table of primes

dale - prints command line, using lots of system calls

isaak - table driven table of the elements; cpp, self-inclusion

litmaath - sorts each arg using only argc, argv, and 'while(<cond>);'

phillipps - 'first day of christmas', tables, heavily main() calling

reddy - prints name of 'char *(*(foo[16])();', compressed

robison - print e in any base, uses only --, >=, and while()

spinellis - #include "/dev/tty"

westley - prints '3.141', circle made of '_-_-_-_' in layout



1989
6th International Obfuscated C Code Contest

fubar - self-reconstructing, recompiling factorial program

jar.1 - char*_="Hello world.\n";

jar.2 - lisp interpreter, compressed

ovdluhe - monkey-typer following template, 'APE' identifiers

paul - print fibonacci base 2 by simulating turing machine

robison - apl-expression interpreter (binary), written in C--

roemer - prints e, script-pi shaped layout, _31415 identifiers

tromp - squished tetris

vanb - one-liner prints all subsets of arguments

westley - reversible, rot13able program that reverses and/or rot13s.



1990
7th International Obfuscated C Code Contest

baruch - short prog to solve N-queens problem

cmills - squished blackjack game

dds - basic interpreter, heavily compressed

dg - rot13 done with strange cpp macros

jaw - compress & atob standins

pjr - the quick brown fox... cppd, structs of functions

scjones - trigraph-abusing self-reproducing program

stig - nested-comment tester (all on command line)

tbr - simple compressed shell, silly layout

theorem - numerically solves the equation y'=f(x,y) and then some

westley - poetic exchange between lovers, prints "luvs me, luvs not"



1991
8th International Obfuscated C Code Contest

ant - compressed vi-like editor

brnstnd - sorta stack language

buzzard - walk thru a maze from a first person point of view

cdupont - prints a message without vowels

davidguy - plays life on a root window, doesn't need Xlib or include files

dds - basic compiler, heavily compressed

fine - rot13s lines of input

rince - game with sprites, boulders, dimonds, and keys

westley - plays tic-tac-toe, compile output for next move, prints board



1992
9th International Obfuscated C Code Contest

adrian - grep-like utility using a state machine transition language

albert - factors multi-precision numbers with factors < MAX_LONG

ant - make utility

buzzard.1 - print factorial, gcd or prime test using a Babbage-like engine

buzzard.2 - forth-like stack machine

gson - anagram generator

imc - Mandelbrot/Julia drawer

kivinen - X11 space invaders, dropout and knockout games

lush - prints "Hello, World" using error messages

marangon - game to balance a grid of digits to all 5's

nathan - obfuscation by (trivial) encryption (source not exported)

vern - plays chess

westley - print ASCII world map and mark a location by lat/long



1993
10th International Obfuscated C Code Contest

ant - egrep utility with Posix-like documentation

cmills - X11 program that shatters and bounces windows

dgibson - plays the game of like using cpp

ejb - tower of Hanoi and patience pizzle

jonth - game of Tetris

leo - game of mastermind (cows & bulls)

lmfjyh - source is the filename, prints value of __FILE__

plummer - prints numbers up to a given value

rince - game state machine language, comes with a number of games

schnitzi - answers questions about English text in a file

vanb - calculator that prints in octal



1994
11th International Obfuscated C Code Contest

dodsond1 - play a game of othello

dodsond2 - Hunt the Wumpus (gziped source)

horton - Plot cubic equations on a tty

imc - print a random n by n magic square

ldb - print a random line from stdin

schnitzi - flips stdin along a diagonal (source mirrored along diagonal)

shapiro - print time of day on an tty

smr - world's smallest self reproducing program

tvr - interactive fractals for the X Window System

  1. Makefile
  2. tvr.c
  3. tvr.alt.c
  4. tvr.hint
  5. tvr.bw
  6. tvr.color

weisberg - prints prime numbers

westley - Adventure/Dungeon like game played via the C pre-processor



1995
12th International Obfuscated C Code Contest

cdua - Generate a maze on the scren and then solve it

dodsond1 - Text to "Pig Latin" translator

dodsond2 - Interactive 3D Maze

esde - Searches for words in a file which have the same Soundex code

garry - Environment-expansion and binary output via escaped env vars

heathbar - 16 bit addition the easy/hard way

leo - Output interesting patterns and cycles in PostScript

makarios - Emits the base 8 representation of prime palindromic in base 8

savastio - Infinite-precision factorial calculator

schnitzi - Find divisors: where a core dump is a feature, not a bug

spinellis - Abusing the rules

vanschnitz - Towers of Hanoi via the C pre-processor



1996
13th International Obfuscated C Code Contest

august - Subset of C compiler and byte code interpreter

dalbec - Generator of strong probable-primes to a given base

eldby - Flying 3D spheres in an ASCII display

gandalf - Displays the ASCII and 8 bit character tables

huffman - Braille to ASCII and vice versa

jonth - X based dual player tic-tac-toe game

rcm - Gunzip equivalent

schweikh1 - Calculates Easter dates from 1582 to 2199 AD

schweikh2 - Search for a limited class of expressions that equal a constant

schweikh3 - Determins the memory allocation honesty of the OS

westley - Shows the time on clock with a configurable face and style



1997
There are no 1997 IOCCC winners

1998
14th International Obfuscated C Code Contest

banks - A flight simulator!

bas1 - Outputs a gziped 3D beam maze in Postscript

bas2 - determines the size of stdin under IOCCC sizing rules

chaos - Rotates and zooms an object using ASCII graphics

df - A word guessing game

dlowe - Pootifies stdin (useful to view Microsoft html files)

dloweneil - A very addictive ASCII poot game

dorssel - ASCII / Morse code translator

fanf - Translates Lambda expressions into combinator expressions

schnitzi - Prints a C program that sorts arguments using strange functions

schweikh1 - Tests to see if your compiler and headers are standard

schweikh2 - Prints random 0's and 1's; causes some gcc's as passes to choke

schweikh3 - Finds duplicate files that waste disk space

tomtorfs - CRC generator



* (all years)


NOTE: For your linking conveience, all of the entries above have URLs of the form:

http://www.ioccc.org/years.html#yyyy_title

Where yyyy is the year and title is the title of the entry.


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