> For the complete documentation index, see [llms.txt](https://0xten.gitbook.io/public/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://0xten.gitbook.io/public/clearsale-ctf/2021.md).

# 2021

![](/files/-MfJ-pBvu3-DTkAp_NPZ)

## Special Thanks

Huge thanks to the - team and special thanks to my friends celesian, waid and lynx for the amazing teamwork and effort and for the great time we had.

## Challanges

{% content-ref url="/pages/-MfI3kenIRcNuvpDbTtY" %}
[Secret Notes](/public/clearsale-ctf/2021/secret-notes.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MfU02qaQggRx\_pRpMOk" %}
[Esse Esse Erre Effe](/public/clearsale-ctf/2021/esse-esse-erre-effe.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MfJLA6mwgk5Wwo-1\_cI" %}
[Fresca Soda](/public/clearsale-ctf/2021/fresca-soda.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MfI3vXcIM8zU9cSBR-0" %}
[Healthchecker](/public/clearsale-ctf/2021/healthchecker.md)
{% endcontent-ref %}