Files
ioccc/2020
Landon Curt Noll 09750f8899 release winning entries of IOCCC28 under the year 2024
Congratulations to:

* 2024/anders - Prize in sound coding - layered music generator
* 2024/burton - Prize in pentagrammatology - wordle hard mode solver
* 2024/cable1 - Prize in bot talk - LLM inference engine
* 2024/cable2 - Prize in murky waters - salmon recipe
* 2024/carlini - Prize in perfect timing - Intel 4004 emulation
* 2024/codemeow - Prize in tray planting - bonsai generator
* 2024/endoh1 - Prize in patient pointillism - slow ray tracer in CPP
* 2024/endoh2 - Prize in solid body physics - rotating rigid body simulation
* 2024/ferguson1 - Prize in diabolical logistics - Oregon trail pact with the devil
* 2024/ferguson2 - Prize in yil-tas - Navajo code talker translator
* 2024/howe - Nice accent eh-ward - mini vi
* 2024/kramer - Prize in linguistic arithmetic - natural language numerical calculator
* 2024/kurdyukov1 - Prize in phased periodicity - phase of the Moon
* 2024/kurdyukov2 - Prize in art restoration - JPEG artifact removal
* 2024/kurdyukov3 - Prize in virtual quietus - gaming VM and doom
* 2024/kurdyukov4 - Prize in embiggening - encode without literals
* 2024/maffiodo - Prize in creative interpretation - Jav\*script interpreter
* 2024/mills - Prize in ℤ₃ - Infocom v3 story interpreter
* 2024/stedolan - Best one liner - icon from MD5
* 2024/straadt - Prize in imitative rebooting - OpenRISC CPU and Linux
* 2024/tmarrec - Prize in cyclonic coding - 3D tornado simulation
* 2024/tompng - Prize in quasi bijection - vortex encryptor decryptor
* 2024/weaver - Sur prize - rickroll

Ran `make update` to perform the above.
 	new file:   2024/burton/.entry.json
2025-08-02 14:43:07 -07:00
..
2025-07-12 10:41:06 -07:00
2020-12-30 16:57:03 -08:00
2020-12-30 16:57:03 -08:00
2024-06-07 02:10:24 -07:00

Twenty Seventh International Obfuscated C Code Contest

Standard IOCCC stuff

View the index.html web page for the given winning entry for information on how on how to compile it and how to run the winning program. Look at the winning source and try to figure how it does what it does! You may then wish to look at the Author's remarks for even more details.

Some C compilers are not quite as good as they should be. If yours is lacking, you may need to compile using clang or gcc instead of your local compiler.

The primary website can be found at www.ioccc.org.

Remarks on some of the winning entries

This year's Best of Show - abuse of libc - 2020/carlini is such a novel way of obfuscation that it would be worth of a special mention in the (future) Best of IOCCC list!

For some reason, this year's set of winning entries contains three nostalgic games, Asteroids - 2020/tsoj, Minesweeper - 2020/endoh1, and Snake - 2020/ferguson1.

An entry, kurdyukov1, pays homage to the previous entry 2015/hou.

...We'll stop spouting too many details now. Have fun exploring all the entries!

Remarks on some of submissions that did not win

As a rule, we try to compile the entries on a variety of platforms. Quite a few entries this year could not be built or executed on some of them due to reliance on library internals or the system runtime.

A few entries were violating the "2053 significant bytes" rule. If an entry could not be brought to compliance within a few seconds of looking at the source, it was disqualified.

One entry tried to get around the size limit by putting the code into Makefile variables and using -D. This is already called out as discouraged technique in the guidelines, but it is worth a reminder.

Several promising entries attempted to make use of the syscall function using literal syscall numbers. This is utterly non-portable.

A note to the authors: when submitting multiple entries, don't let us easily correlate them by coding style or documentation content, and definitely don't submit nearly identical versions of your program separately. As we try to judge the entries anonymously, the similarities will cause such entries to compete against one another, making each less likely to win.

We hope the authors of non-winning entries will refine their entries and perhaps re-submit them for the next IOCCC.

Final Comments

One more thing that feels dated is digraphs and trigraphs.

IMPORTANT NOTE: See contact.html for up to date contact details as well as details on how to provide fixes to any of the entries. See also the IOCCC FAQ for additional information on the IOCCC.