People Who Have Won

A is for atoi

Ondřej Adamovský
- Most functional interpreter (2019 adamovsky)
Anton Älgmyr
- Most cacophonic (2018 algmyr)
Derek Anderson
- Most able to divine code gaps (2018 anderson)
Glyn Anderson
- Best Use of Flags (2000 anderson)
Anonymous
- Dishonorable mention (1984 anonymous)
Anonymous -- https://web.archive.org/web/20040324155828/http://bicoherent.topcities.com/
- Best use of "Precious" Lines (2004 anonymous)
Anonymous
- Best 3D puzzle (2005 anonymous)
Anonymous
- Best 3D puzzle (2015 anonymous)
David Applegate -- http://www.caam.rice.edu/~davida
- Best X11 Graphics (1991 davidguy)
Jack Applin -- https://www.cs.colostate.edu/~applin/
- Best one liner (1985 applin)
- Most adaptable program (1986 applin)
- Best of show (1988 applin)
Jari Arkko -- http://www.arkko.com
- Strangest abuse of the rules (1989 jar.1)
- Best of show (1989 jar.2)
- Best of show (2000 jarijyrki)
Michael Ash
- Best use of parenthesis (2005 mikeash)
Lennart Augustsson -- https://web.archive.org/web/20090831055828/http://www.cs.chalmers.se/~augustss
- Most obscure program (1985 august)
- Best complex task done in a complex way (1986 august)
- Best of Show (1996 august)

B is for break

Carl Banks -- https://blog.aerojockey.com/post/iocccsim
- Best of Show (1998 banks)
Gavin Barraclough
- Dishonorable mention (2001 anonymous)
- Best of Show (2004 gavin)
Sean Barrett -- http://world.std.com/~buzzard
- Best Output (1991 buzzard)
- Most Obfuscated Algorithm (1992 buzzard.1)
- Best Language Tool (1992 buzzard.2)
Doug Beardsley
- Best AI (2001 dgbeards)
Fabrice Bellard -- https://bellard.org/
- Most Specific Output (2000 bellard)
- Best abuse of the rules (2001 bellard)
- Most inflationary (2018 bellard)
E. Jay Berkenbilt
- Best Obfuscated Algorithm (1993 ejb)
Daniel J. Bernstein -- http://pobox.com/~djb/djb.html
- Best Of Show (1991 brnstnd)
Mark Biggar
- Best Abuse of the Rules (1987 biggar)
Michael Birken -- http://www.meatfighter.com/
- EDAMAME Award (2006 birken)
- Best painting tool (2013 birken)
- Best use of port 1701 (2014 birken)
Paul E. Black -- http://hissa.ncsl.nist.gov/~black/black.html
- Most complex algorithm (1989 paul)
Philip Blakely
- Most devolving (2011 blakely)
- Most GIFted expressions (2012 blakely)
James Bonfield
- Best Game (1991 rince)
- Most Well Rounded (1993 rince)
- Astronomically Obfuscated (2000 rince)
Szabolcs Borsanyi
- Most Useful (2006 borsanyi)
- Best data utility (2011 borsanyi)
Francois Boutines
- Most superfluous output (2005 boutines)
Moxen N. Briddlebane
- Best Abuse of User (2000 briddlebane)
Walter Bright -- http://www.walterbright.com/
- Most useful obfuscation (1986 bright)
Leonid A. Broukhis -- http://www.mailcom.com/leob
- Best Game (1993 leo)
- Best Use of Obfuscation (1995 leo)
bsoup
- Best solved puzzle (2011 hamaji)
Laurion Burchall -- https://web.archive.org/web/20070711215750/http://www.netspace.org/users/ldb/
- Best One-liner (1994 ldb)
Brent Burley
- Best Calculated Risk (2004 burley)
Dave Burton -- http://snox.net/ioccc
- Most Useful (2015 burton)
- Best abuse of the rules (2018 burton2)
- Best one-liner (2018 burton1)
- Best one-liner (2019 burton)
- Best one-liner (2020 burton)
Gavin Buttimore
- Most Portable Output (2000 thadgavin)

C is for cc

Adrian Cable
- Most partisan 1-liner (2013 cable1)
- Largest small system emulator (2013 cable3)
- Best of show (2013 cable2)
Nicholas Carlini -- https://nicholas.carlini.com
- Best of show - abuse of libc (2020 carlini)
Raymond Cheong -- http://www.raymondcheong.com/index.html
- Best Abuse of CPP (2000 primenum)
- Best short program (2001 cheong)
V. Chia
- Most ambiguous language (2005 chia)
Marcin Ciura
- Most likely to be awarded (2018 ciura)
- Most alphabetic (2019 ciura)
Ian Collier -- http://www.comlab.ox.ac.uk/oucl/users/ian.collier/
- Best Output (1992 imc)
- Most Obfuscated Algorithm (1994 imc)
Pierre-Philippe Coupard
- Most obfuscated sound (2001 coupard)

D is for do

John Dalbec -- https://jpdalbec.people.ysu.edu
- Best Numerical Obfuscation (1996 dalbec)
- Best Abuse of the Periodic Table (2004 jdalbec)
Paul Dale -- http://www.jcu.edu.au/~ccptd/
- Best abuse of system calls (1988 dale)
Ferenc Deak
- Most underscored argument (2014 deak)
Bas de Bakker
- Best Encapsulation (1998 bas1)
- Best Small Program (1998 bas2)
Alex Deckmyn
- Most notable and best tool (2012 deckmyn)
Dave Decot
- Second place (1984 decot)
Sebastian Deorowicz -- http://sun.aei.polsl.pl/~sdeor/
- Interesting Algorithm (1995 esde)
Alan De Smet -- http://www.highprogrammer.com/alan
- Best Object Orientation (1998 chaos)
Volker Diels-Grabsch -- https://njh.eu
- Best small program (2019 diels-grabsch1)
- Most self-aware (2019 diels-grabsch2)
Don Dodson -- http://www.neta.com/~dodson/
- Best Game (1994 dodsond1)
- Most Obfuscated Packaging (1994 dodsond2)
- Most Humorous (1995 dodsond1)
- Best Game (1995 dodsond2)
Gil Dogon
- Best 2D puzzle (2005 giljade)
- Most Crafty (2015 dogon)
- Best use of space and time (2019 dogon)
Sean Dorward
- Best Utility (1990 tbr)
Heather Downs -- http://www.bungalow.com/
- Best Layout (1995 heathbar)
- Best Short Program (1995 makarios)
Carlos Duarte
- Best Output (1995 cdua)
Etienne Duble -- https://lig-membres.imag.fr/duble
- Best Handwriting (2015 duble)
- Best collaborative graphics (2019 duble)
Christian Dupont
- Most Useful Label (1991 cdupont)

E is for errno

Peter Eastman
- Best ball (2011 eastman)
Paul Eggert
- Best Entropy-reducer (1990 jaw)
Thor Eldby
- Best Output (1996 eldby)
Yusuke Endoh
- PiE in the sky award (2012 endoh2)
- Most complex ASCII fluid - Honorable mention (2012 endoh1)
- Most tweetable 1-liner (2013 endoh3)
- Most lazy SKIer (2013 endoh1)
- Most recyclable (2013 endoh2)
- Most solid (2013 endoh4)
- Most square (YODA award) (2014 endoh1)
- Best use of bioinformatics (2014 endoh2)
- Most Diffused Reaction (2015 endoh1)
- Back to the Future Award (2015 endoh3)
- Best One-liner (2015 endoh4)
- Most Overlooked Obfuscation (2015 endoh2)
- Best use of python (2018 endoh2)
- Best tool to reveal holes (2018 endoh1)
- Most in need of debugging (2019 endoh)
- Most head-turning (2020 endoh3)
- Best perspective (2020 endoh2)
- Most explosive (2020 endoh1)

F is for float

Cody Boone Ferguson -- https://ioccc.xexyl.net
- Best use of weasel words (2018 ferguson)
- Most enigmatic (2020 ferguson2)
- Don't tread on me award (2020 ferguson1)
Tony Finch -- http://dotat.at/
- Most Obfuscated Translator (1998 fanf)
Thomas A. Fine -- http://hea-www.harvard.edu/~fine/
- Best One Liner (1991 fine)
Daniel Fischer
- Best Data Hiding (1998 df)
Karl F. Fox
- Best Entropy-reducer (1990 jaw)
Kimmo Fredriksson
- Most useful (2011 fredriksson)
Thaddaeus Frogley -- http://thad.notagoth.org/
- Most Portable Output (2000 thadgavin)

G is for goto

Anders Gavare -- https://gavare.se
- Best use of Light and Spheres (2004 gavare)
David Gibson
- Best Abuse of the C Preprocessor (1993 dgibson)
Edward Giles -- https://id523a.com/
- Most unstable (2018 giles)
- Most in need of wide space (2019 giles)
- Most phony (2020 giles)
Garry Glendown -- http://insider.regio.net/~garry
- Best Utility (1995 garry)
David Goodenough
- Best Abuse of the C Preprocessor (1990 dg)
Uri Goren
- Most artistic (2011 goren)
Aaron Grothe
- Most Obfuscated Audio (2006 grothe)
- Most conspiratorial (2012 grothe)
Andreas Gustafsson -- http://www.araneus.fi/gson/
- Most Humorous Output (1992 gson)

H is for hypot

Jim Hague -- https://lunch.org.uk
- Worst abuse of the C preprocessor (1986 hague)
Shinichiro Hamaji
- Best solved puzzle (2011 hamaji)
Tsukasa Hamano
- Most elementary use of C - Silver award (2012 hamano)
Steinar Hamre
- Most Irrational (2006 hamre)
Paul Heckbert -- http://www.cs.cmu.edu/~ph
- Best Obfuscator of Programs (1987 heckbert)
Robert Heckendorn -- http://www.cs.colostate.edu/~heckendo/main.html
- Best one liner (1985 applin)
Stig Hemmer -- http://www.pvv.ntnu.no/~stig/
- Strangest Abuse of the Rules (1990 stig)
Immanuel Herrmann -- https://web.archive.org/web/20071018081145/http://pcpool.mathematik.uni-freiburg.de/~immi/
- Best abuse of the C preprocessor (2001 herrmann1)
- Most eye-crossing (2001 herrmann2)
Spencer Hines
- Worst Style (1987 hines)
Arne "Timwi" Heizmann
- Most discourteous interpreter (2005 timwi)
Bruce Holloway
- Best simple task performed in a complex way (1986 holloway)
Jyrki Holopainen -- https://web.archive.org/web/20061205082106/http://personal.eunet.fi/pp/halo/
- Most Versatile Source (1993 lmfjyh)
- Best of show (2000 jarijyrki)
Mary Ann Horton -- https://maryannhorton.com
- Best Utility (1994 horton)
Qiming HOU
- Best self documenting program (2011 hou)
- Most useful obfuscation (2012 hou)
- Best use of 1 Infinite Loop (2013 hou)
- Most Well-rounded Hash (2015 hou)
- Most likely to top the charts (2018 hou)
Anthony C. Howe -- http://www.snert.com/
- Best Utility (1991 ant)
- Best Utility (1992 ant)
- Best Utility (1993 ant)
- Best Abuse of the Guidelines (2004 hibachi)
- Best use of the WWW (2005 mynx)
- Most Different (2015 howe)
Jonathan Hoyle -- http://www.jonhoyle.com
- Most Functional Output (2004 hoyle)
Ken Huffman -- http://www.huffmancoding.com
- Best Obfuscated Character Set Utility (1996 huffman)

I is for int

Mark Isaak
- Best visuals (1988 isaak)

J is for jmp_buf

Thomas P John -- https://web.archive.org/web/20010720192926/http://tomx.tripod.com/
- Most Complete Program (2000 tomx)
Nick Johnson -- https://web.archive.org/web/20051030162356/http://www.notdot.net/
- Best use of Vision (2004 arachnid)
Larry Jones
- ANSI Committee's Worst Abuse of C (1990 scjones)

K is for killchar

Seonghoon Kang -- http://mearie.org
- Best short program (2012 kang)
Joshua Karns
- Most in need of whitespace (2019 karns)
Chris King
- Worst Driver (2001 ctk)
Tero Kivinen -- http://www.iki.fi/kivinen/
- Best X Program (1992 kivinen)
Peter Klausler
- Abuse of the rules (2005 klausler)
Taketo Konno
- Best one liner (2011 konno)
- Best one liner (2012 konno)
Eryk Kopczynski -- http://www.mimuw.edu.pl/~erykk/
- Best One-Liner (2004 kopczynski)
David Korn -- http://www.kornshell.com/~dgk/
- Best One Liner (1987 korn)
Ilya Kurdyukov -- https://github.com/ilyakurdyukov
- Bset slaml prragom (2020 kurdyukov3)
- Best utility (2020 kurdyukov1)
- Least detailed (2020 kurdyukov2)
- Best abuse of lámatyávë (2020 kurdyukov4)

L is for libc

Mike Laman
- Third place (1984 laman)
Ora Lassila -- http://www.lassila.org/
- Best of show (1989 jar.2)
Jetro Lauha -- http://jet.ro
- Most sonorous output (2005 jetro)
Roemer B. Lievaart -- http://huizen.dds.nl/~lievaart
- Grand Prize (1987 lievaart)
- Best layout (1989 roemer)
Maarten Litmaath
- Best small program (1988 litmaath)
J. David Lowe -- https://github.com/dlowe
- Best Utility (1998 dlowe)
- Most Fun (1998 dloweneil)
- Worst Abuse of the Rules (2000 dlowe)
- Most self deprecating (2011 dlowe)
- Best way to lose a life (2012 dlowe)
- Best sparkling utility (2013 dlowe)
Ed Luke -- http://www.erc.msstate.edu/~lush
- Worst Abuse of the C Preprocessor (1992 lush)
Ed Lycklama -- http://www.klg.com
- Strangest appearing program (1985 lycklama)
Ben Lynn -- https://crypto.stanford.edu/~blynn/
- Most functional compiler (2019 lynn)

M is for malloc

David Madore -- http://www.madore.org/~david/
- Most conspiratorial (2012 grothe)
Sandro Maffiodo -- http://www.assezeta.com/sandromaffiodo
- Homage to a classic game (2014 maffiodo1)
- Most tweetable entry (2014 maffiodo2)
Selene Makarios -- http://www.bungalow.com/
- Best Layout (1995 heathbar)
- Best Short Program (1995 makarios)
Andrea Marangoni -- http://www.andreamarangoni.it
- Best Game (1992 marangon)
Adrian Mariano -- http://cam.cornell.edu/adrian/
- Best of Show (1990 theorem)
- Most Educational (1992 adrian)
Eric Marshall
- Best layout (1986 marshall)
Ron McFarland
- Best RFC Obfuscation (1996 rcm)
Bernd Meyer -- https://web.archive.org/web/20030212213342/http://byron.csse.monash.edu.au/realindex.html
- Best Utility (2000 bmeyer)
Raphael Meyer
- Best Game (2006 meyer)
Christopher Mills
- Best Game (1990 cmills)
- "Bill Gates" Award (1993 cmills)
- Most timely rendered (2013 mills)
- "For the Birds!" Award (2015 mills1)
- Most Compact (2015 mills2)
- Best of show (2018 mills)
- Most in need to be tweeted (2019 mills)
Neil Mix
- Most Fun (1998 dloweneil)
Maurizio Monge
- Best Compiled Graphics (2006 monge)
Yves-Marie Morgan
- Smallest large system simulator (2013 morgan1)
- Most playfully versatile (2013 morgan2)
- Most likely to succeed (2014 morgan)
Sjoerd Mullender -- https://github.com/sjoerdmullender
- Grand Prize (1984 mullender)
Dominik Muth
- Most Complete Use of CPP (2015 muth)

N is for nan

Jeff Newbern
- Best Font Engine (2004 newbern)
Christopher Night -- https://web.archive.org/web/20090415070532/https://www.people.fas.harvard.edu/~night/
- Best Abuse of Computation (2006 night)
Baruch Nissenbaum
- Best Small Program (1990 baruch)
Esko Nuutila -- http://www.cs.hut.fi/~enu/
- Best of show (1989 jar.2)

O is for open

Nicolas Ollinger -- https://www.univ-orleans.fr/lifo/Members/Nicolas.Ollinger/
- Best Of Show (2001 ollinger)
Jason Orendorff -- http://jorendorff.blogspot.com
- Best Of Show (2001 jason)
Doron Osovlanski -- http://www.cadtech.co.il/profile.html
- Best Small Program (1990 baruch)
Nathan Otterness -- https://github.com/yalue
- Most percussive (2020 otterness)

P is for printf

Michael H. Pawka -- http://niceup.com
- Most illegible code (1986 pawka)
Vern Paxson
- Best of Show (1992 vern)
Mauro Persano
- Best of Show (2005 persano)
Ian Phillipps
- Least likely to compile successfully (1988 phillipps)
Mark Plummer -- http://www.nrgnet.com/markus
- Best One Liner (1993 plummer)
Timo Poikola -- https://ig.fi/other/ioccc
- Most stellar (2018 poikola)
- Most calendrical (2019 poikola)
Alexander Prishchepov -- https://github.com/sans17/
- Best use of port 1701 (2014 birken)
Kevin Pulo -- //www.kev.pulo.com.au/
- Best Curses Game (2001 kev)

Q is for qsort

R is for realloc

Byron Rakitzis
- Best Utility (1990 tbr)
Teemu Rantanen -- http://www.cs.hut.fi/~tvr/
- Best X11 Program (1994 tvr)
Gopi Reddy
- Most useful Obfuscated C program (1988 reddy)
Gregor Richards
- Most surprisingly portable (2011 richards)
Arch D. Robison
- Best abuse of C constructs (1988 robison)
- Best minimal use of C (1989 robison)
- Best game (2000 robison)
- Most poetic use of strings (2013 robison)
Edward Rosten -- https://www.edwardrosten.com
- Best abuse of the user (2001 rosten)
Peter J Ruczynski -- http://www.softbase.co.uk/
- Most Unusual Data Structure (1990 pjr)
Szymon Rusinkiewicz -- http://www-leland.stanford.edu/~smr
- Worst Abuse of the Rules (1994 smr)

S is for scanf

Michael Savastio -- http://www.geocities.com/SouthBeach/Marina/5775
- Most Obfuscated Syntax (1995 savastio)
Craig Schneiderwent
- Most Timely Output (2000 schneiderwent)
Mark Schnitzius
- Obfuscated Intelligence Award (1993 schnitzi)
- Best Layout (1994 schnitzi)
- Best One Liner (1995 schnitzi)
- Worst Abuse of the C Preprocessor/Most Likely to Amaze (1995 vanschnitz)
- Best Flow Control (1998 schnitzi)
- Best Non-Use of Curses (2004 schnitzi)
Jens Schweikhardt -- http://www.schweikhardt.net
- Worst Abuse of the C Preprocessor (1996 schweikh1)
- Best Algorithm (1996 schweikh2)
- Best Utility (1996 schweikh3)
- CPP Abuse (1998 schweikh1)
- Most Erratic Behavior (1998 schweikh2)
- Most Space Efficient (1998 schweikh3)
- Best one-liner (2001 schweikh)
- Best Documented (2015 schweikhardt)
Andrew T. Shapiro
- Most Well Rounded Obfuscation (1994 shapiro)
Carl Shapiro
- Grand prize for most well-rounded in confusion (1985 shapiro)
NATORI Shin
- Best Small Program (2000 natori)
Col. G. L. Sicherman -- https://sicherman.net/
- Worst abuse of the C preprocessor (1985 sicherman)
Nathan Sidwell -- http://www.cs.bris.ac.uk/~nathan/
- Worst Abuse of the Rules (1992 nathan)
Cel Skeggs -- http://www.celskeggs.com
- Most dynamic (2014 skeggs)
Andy Sloane
- Homer's Favorite (2006 sloane)
Diomidis Spinellis -- http://www.spinellis.gr
- Best abuse of the rules (1988 spinellis)
- Best Language Tool (1990 dds)
- Most Well Rounded (1991 dds)
- Abusing The Rules (1995 spinellis)
Jan Stein
- Best one liner (1986 stein)
Thomas Stewart
- Best Computed Graphics (2006 stewart)
Dean Swift
- Best Layout (1996 gandalf)
Stephen Sykes -- http://www.stephensykes.com (via Internet Wayback Machine)
- Best Abuse of Indentation (2004 sds)
- Best Emulator (2005 sykes)
- Best Assembler (2006 sykes1)
- Best One-liner (2006 sykes2)

T is for tmpfile

Jon Thingvold
- Most Obfuscated X Program (1993 jonth)
- Best X11 Entry (1996 jonth)
Aidan Thornton
- Most ingenious puzzle solution (2005 aidan)
Oscar Toledo G. -- https://nanochess.org/
- Best Game (2005 toledo)
- Best Small Program (2006 toledo1)
- Best of Show (2006 toledo2)
- Most Portable Chess Set (2006 toledo3)
- Best non-chess game (2011 toledo)
Tom Torfs -- https://web.archive.org/web/20010520021948/http://members.nbci.com/tomtorfs/
- Best Self-Documenting (1998 tomtorfs)
John Tromp -- http://tromp.github.io/
- Best game (1989 tromp)
- Most functional (2012 tromp)
tsoj -- https://gitlab.com/tsoj
- Most misleading indentation (2020 tsoj)

U is for ungetc

V is for vfprintf

David Van Brackle -- http://east.isx.com/~vanb/
- Best one liner (1989 vanb)
- Most Irregular Expression (1993 vanb)
- Worst Abuse of the C Preprocessor/Most Likely to Amaze (1995 vanschnitz)
Albert van der Horst -- http://home.hccnet.nl/a.w.m.van.der.horst
- Most Useful Program (1992 albert)
Frans van Dorsselaer
- Obsolescent Feature (1998 dorssel)
Robbert van Renesse -- http://www.cs.cornell.edu/home/rvr
- Grand Prize (1984 mullender)
Daniel Vik -- http://danielvik.com/
- Best X11 Game (2004 vik1)
- Best Abuse of CPP (2004 vik2)
- Most circuitous walk (2005 vik)
- Most sound (2011 vik)
- Best use of cocoa - Bronze award (2012 vik)
- Best handling of beeps (2014 vik)
Scott Vokes
- Most connected (2018 vokes)
Oskar von der Luehe
- Most humorous output (1989 ovdluhe)
Jay Vosburgh
- Best self-modifying program (1989 fubar)

W is for while

Larry Wall -- http://www.wall.org/~larry/
- Grand prize in most well-rounded in confusion (1986 wall)
- Most Useful Obfuscation (1987 wall)
Vincent Weaver -- http://www.deater.net/weave/
- Most beauteous visuals (2005 vince)
Jeff Weisberg -- http://www.op.net/~jaw
- Best Short Program (1994 weisberg)
Brian Westley -- http://www.westley.org
- Best Layout (1987 westley)
- Best layout (1988 westley)
- Most algorithms in one program (1989 westley)
- Best Layout (1990 westley)
- Grand Prize (1991 westley)
- Best Small Program (1992 westley)
- Worst Abuse of the C Preprocessor (1994 westley)
- Best One Liner (1996 westley)
- Best position-independent code (2001 westley)
Freek Wiedijk
- Best game (1989 tromp)
- Most functional (2014 wiedijk)
John Williams
- Best Graphic Game (2001 williams)
James A. Woods
- Best Entropy-reducer (1990 jaw)

X is for xor

Y is for y0

Don Yang -- http://uguu.org/
- Best Layout (2000 dhyang)
- Best Utility (2004 omoikane)
- Best of Show - Most Shrinkable (2011 akari)
- Most surreptitious (2012 omoikane)
- Most catty (2013 misaka)
- Best choice of optimization (2014 sinon)
- Most Pointed Reaction (2015 yang)
- Most shifty (2018 yang)
- Most in need of transparency (2019 yang)
- Best abuse of CPP (2020 yang)

Z is for zlib

Lord Zarbon
- Best Abuse of User (2000 briddlebane)
Adar Zeitak
- Balanced use of obfuscation - Gold award (2012 zeitak)
Matt Zucker -- https://mzucker.github.io/swarthmore/
- Most shiny (2011 zucker)

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