1. What is a ‘Capture the flag’ competition?
    Participants solve various challenges with the aim of discovering a hidden chain - flag. Their task is to find this flag. In searching for the flag, participants use and expand their IT skills and knowledge.

  2. I don’t want to compete alone, I would like to be a part of a team, what shall I do?
    You can contact other potential participants in the slack platform and create a team; or you can search for vacancies in teams which are not yet complete.

  3. In case my team wins the on-site qualifier, am I obliged to travel to Japan?
    No. The participation in the international finals in Japan is voluntary. The nominated team may refuse to take part in the finals. The organiser reserves the right to nominate another team (another participant of the on-site qualifier).

  4. Whom shall I contact in case of questions or issues?
    For general issues, please contact thecatch@cesnet.cz. In case of technical issues relating to the CTF platform, you can also contact the CESNET’s service desk at https://www.cesnet.cz/kontakty/service-desk/.

  5. It’s my first time here and this is my first CTF, what shall I do once I have registered (and logged) in the CTF portal?
    The available challenges can be found under the Challenges bookmark. Detailed instructions shall be displayed by clicking at individual challenges. Typically, these contain a link or a file to download and process. Once you have found the ‘flag’ (a chain in a pre-defined format), you enter it to the given challenge. In case the flag is correct, the challenge is displayed in green and points are assigned in your scoreboard.

  6. How will the challenges be published?
    All challenges of the first round will be released on the first day, i.e. 2018-10-12 at midday (CEST).

  7. Is there some penalization for taking hints?
    Hint with no penalization is available under the "View hint" link, while the penalized hints are under the "Unlock hint for X points" label, where X is the number of points that will be substracted from your score. But do not worry, we are not going to offer hints - who wants to Japan must be able to win even without hints :-).

  8. How to get people to be in one team?
    The CTFd platform des not support assigning of the individuales to the team. The solutions is
    a) All members of the team use the same login.
    b) Every member has his / her account (likewise almost everybody has it when they come to the practical challenges) under which he / she likes to enter the assignment. The earned flag is then entered by the captain.

  9. How is ensured that the team has max 4 members?
    There are no technical limitations on the number of players. In fact:
    • The captain is able to count 1-2-3-4 when the team is created.
    • The organizers are able to count 1-2-3-4 during the on-site round and when the prizes will be administered.