Welcome to Mārtiņa-CTF 2026!

Please register for the event to participate.

Important Information

By registering for Mārtiņa-CTF, you agree to abide by the Rules and Regulations of the event. Please read them carefully before participating.
When registering, please provide a valid email address. If you lose your password, you will need to use this email address to reset it.

First off, create or join a team. You can do this by going to the Teams page. If you are participating solo, you can create a team with just yourself in it.

If you wish to attend Mārtiņa-CTF in person, please indicate so in your survey, as there is an attendance limit. If you change your mind, you can update your response in the survey. See below for more information about the survey.

LLM Usage

Teams also have the option to opt-in to join the "No-LLM" group of teams. This is mostly just a promise to solve challenges without AI assistance, and is entirely optional, based on trust. Ask your team members if they agree to undertake this promise!
If your team decides to summon the machines after all, simply remove the "No-LLM" tag from your team settings page. You can also change your mind at any time, but please be honest!
This is not a separate track and has no special prizes. Using AI as an enhanced search engine to find documentation or resources is still allowed.

Full details are available here: LLM Rules

Communication and Survey

You can also join our Discord server to receive updates and communicate with other participants: discord.gg/pG6CjUnYkF.
The Discord server is the main channel for communication, but if you're opposed to using Discord, you can always reach out to us via email!

Please, consider filling out this survey: Log in to access the survey.
Note that the survey is optional, but it will help us improve next year's CTF. Your responses will be kept confidential and will not be shared publicly and, where possible, will be anonymized.

If you have any questions, feel free to reach out to us on Discord or via email at martina.ctf@datoriki.org.