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The 29th International Obfuscated C Code Contest (IOCCC) 2025 Winners

A yearly reminder of programming as craft, puzzle, language abuse, and cultural tradition.

IOCCC

Entries

Winning entries

Winning authors

Location of authors

Bugs and (mis)features

Fixing entries

Updating author info

Status

News

Contest status

IOCCC rules

IOCCC guidelines

Markdown guidelines

Security policy

FAQ

Frequently asked questions

Enter the IOCCC

Compiling entries

Running entries

How to help

About

Home page

IOCCC social media

About the IOCCC

The judges

Thanks for the help

Contact us

Entries

Winning entries

Winning authors

Location of authors

Bugs and (mis)features

Fixing entries

Updating author info

Thanks for the help

Status

News

Contest status

IOCCC rules

IOCCC guidelines

Markdown guidelines

Security policy

FAQ

Frequently asked questions

Enter the IOCCC

Compiling entries

Running entries

How to help

About

Home page

IOCCC social media

About the IOCCC

The judges

Contact us

# The International Obfuscated C Code Contest