The International Obfuscated C Code Contest

Winning Entries

This version of the winning entries page does NOT contain brief explanations of each winning entry. You can check out the spoiler version of this page if you don't mind seeing a brief summary of each entry. There is also a spoiler summary that gives a summary description of all of the winners.

26th International Obfuscated C Code Contest (2019)

adamovsky

burton

ciura

diels-grabsch1

diels-grabsch2

dogon

duble

endoh

giles

karns

lynn

mills

poikola

yang

25th International Obfuscated C Code Contest (2018)

algmyr

anderson

bellard

burton1

burton2

ciura

endoh1

endoh2

ferguson

giles

hou

mills

poikola

vokes

yang

24th International Obfuscated C Code Contest (2015)

burton

dogon

duble

endoh1

endoh2

endoh3

endoh4

hou

howe

mills1

mills2

muth

schweikhardt

yang

23rd International Obfuscated C Code Contest (2014)

birken

deak

endoh1

endoh2

maffiodo1

maffiodo2

morgan

sinon

skeggs

vik

wiedijk

22nd International Obfuscated C Code Contest (2013)

2013.tar.bz2 - all of the data for 2013 (2.3 MiB)

Makefile

README.html

README.text

hint.css

whowon.html

birken

cable1

cable2

cable3

dlowe

endoh1

endoh2

endoh3

endoh4

hou

mills

misaka

morgan1

morgan2

robison

21st International Obfuscated C Code Contest (2012)

blakely

deckmyn

dlowe

endoh1

endoh2

grothe

hamano

hou

kang

konno

omoikane

tromp

vik

zeitak

20th International Obfuscated C Code Contest (2011)

akari

blakely

borsanyi

dlowe

eastman

fredriksson

goren

hamaji

hou

konno

richards

toledo

vik

zucker

19th International Obfuscated C Code Contest (2006)

2006.tar.bz2 - all of the data for 2006 (598 KiB)

Makefile

README.text

guidelines.txt

rules.txt

birken

borsanyi

grothe

hamre

meyer

monge

night

sloane

stewart

sykes1

sykes2

toledo1

toledo2

toledo3

18th International Obfuscated C Code Contest (2005)

2005.tar.bz2 - all of the data for 2005 (122 KiB)

Makefile

README.text

guidelines.txt

rules.txt

aidan

anon

boutines

chia

giljade

jetro

klausler

mikeash

mynx

persano

sykes

timwi

toledo

vik

vince

17th International Obfuscated C Code Contest (2004)

README

Makefile

rules

guidelines

mkentry.c

2004.tar.bz2 - all of the data for 2004 (81.3 KiB)

anonymous

arachnid

burley

gavare

gavin

hibachi

hoyle

jdalbec

kopczynski

newbern

omoikane

schnitzi

sds

vik1

vik2

16th International Obfuscated C Code Contest (2001)

README

Makefile

rules

guidelines

mkentry.c

2001.tar.bz2 - all of the data for 2001 (72.0 KiB)

anonymous

bellard

cheong

coupard

ctk

dgbeards

herrmann1

herrmann2

jason

kev

ollinger

rosten

schweikh

westley

williams

15th International Obfuscated C Code Contest (2000)

README

Makefile

rules

guidelines

mkentry.c

2000.tar.bz2 - all of the data for 2000 (583 KiB)

anderson

bellard

bmeyer

briddlebane

dhyang

dlowe

jarijyrki

natori

primenum

rince

robison

schneiderwent

thadgavin

tomx

14th International Obfuscated C Code Contest (1998)

README

Makefile

rules

guidelines

mkentry.c

1998.tar.bz2 - all of the data for 1998 (118 KiB)

banks

bas1

bas2

chaos

df

dlowe

dloweneil

dorssel

fanf

schnitzi

schweikh1

schweikh2

schweikh3

tomtorfs

13th International Obfuscated C Code Contest (1996)

README

Makefile

rules

guidelines

mkentry.c

1996.tar.bz2 - all of the data for 1996 (73.6 KiB)

august

dalbec

eldby

gandalf

huffman

jonth

rcm

schweikh1

schweikh2

schweikh3

westley

12th International Obfuscated C Code Contest (1995)

README

Makefile

rules

guidelines

mkentry.c

1995.tar.bz2 - all of the data for 1995 (44.1 KiB)

cdua

dodsond1

dodsond2

esde

garry

heathbar

leo

makarios

savastio

schnitzi

spinellis

vanschnitz

11th International Obfuscated C Code Contest (1994)

README

Makefile

rules

guidelines

mkentry.c

1994.tar.bz2 - all of the data for 1994 (49.8 KiB)

dodsond1

dodsond2

horton

imc

ldb

schnitzi

shapiro

smr

tvr

weisberg

westley

10th International Obfuscated C Code Contest (1993)

README

Makefile

rules

guidelines

mkentry.c

1993.tar.bz2 - all of the data for 1993 (52.3 KiB)

ant

cmills

dgibson

ejb

jonth

leo

lmfjyh

plummer

rince

schnitzi

vanb

9th International Obfuscated C Code Contest (1992)

README

Makefile

rules

guidelines

mkentry.c

1992.tar.bz2 - all of the data for 1992 (72.0 KiB)

adrian

albert

Makefile

albert.c

albert.hint

albert.orig.c

There is additional information on the spoiler page for this entry.

ant

buzzard.1

buzzard.2

gson

imc

kivinen

lush

marangon

nathan

Makefile

nathan.c

nathan.hint

There is additional information on the spoiler page for this entry.

vern

westley

8th International Obfuscated C Code Contest (1991)

README

Makefile

rules

ansi.mk

common.mk

1991.tar.bz2 - all of the data for 1991 (35.4 KiB)

ant

brnstnd

buzzard

cdupont

davidguy

dds

fine

rince

westley

7th International Obfuscated C Code Contest (1990)

README

Makefile

rules

ansi.mk

common.mk

1990.tar.bz2 - all of the data for 1990 (26.1 KiB)

baruch

cmills

dds

dg

jaw

pjr

scjones

stig

tbr

theorem

westley

6th International Obfuscated C Code Contest (1989)

README

Makefile

rules

1989.tar.bz2 - all of the data for 1989 (19.8 KiB)

fubar

jar.1

jar.2

ovdluhe

paul

robison

roemer

tromp

vanb

westley

5th International Obfuscated C Code Contest (1988)

README

Makefile

rules

1988.tar.bz2 - all of the data for 1988 (13.5 KiB)

applin

dale

isaak

litmaath

phillipps

reddy

robison

spinellis

westley

Makefile

westley.c

westley.hint

There is additional information on the spoiler page for this entry.

4th International Obfuscated C Code Contest (1987)

README

Makefile

rules

1987.tar.bz2 - all of the data for 1987 (9.7 KiB)

biggar

heckbert

hines

korn

lievaart

wall

westley

3rd International Obfuscated C Code Contest (1986)

README

Makefile

rules

1986.tar.bz2 - all of the data for 1986 (8.3 KiB)

applin

august

bright

hague

holloway

marshall

pawka

stein

wall

2nd International Obfuscated C Code Contest (1985)

README

Makefile

rules

1985.tar.bz2 - all of the data for 1985 (4.4 KiB)

applin

august

lycklama

shapiro

sicherman

1st International Obfuscated C Code Contest (1984)

README

Makefile

rules

1984.tar.bz2 - all of the data for 1984 (4.0 KiB)

anonymous

Makefile

anonymous.c

hint.text

hint.html

There is additional information on the spoiler page for this entry.

decot

laman

mullender