# 2021 Writeups

- [Union CTF](/writeups/2021-writeups/union-ctf.md)
- [Antistatic](/writeups/2021-writeups/union-ctf/antistatic.md)
- [Cr0wn Air](/writeups/2021-writeups/union-ctf/cr0wn-air.md)
- [Human Server](/writeups/2021-writeups/union-ctf/human-server.md)
- [Mordell Primes](/writeups/2021-writeups/union-ctf/mordell-primes.md)
- [Neo-classical](/writeups/2021-writeups/union-ctf/neo-classical.md)
- [Nutty](/writeups/2021-writeups/union-ctf/nutty.md)
- [Why is a raven](/writeups/2021-writeups/union-ctf/why-is-a-raven.md)