> For the complete documentation index, see [llms.txt](https://gitbook-88.gitbook.io/ctf-writeup/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn.md).

# 2019 CISCN

- [\[华北赛区\]Hack World](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/hua-bei-sai-qu-hack-world.md)
- [\[华北赛区\]ikun](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/hua-bei-sai-qu-ikun.md)
- [\[华东南赛区\]Web11](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/hua-dong-nan-sai-qu-web11.md)
- [\[华北赛区\]Dropbox](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/hua-bei-sai-qu-dropbox.md)
- [\[总决赛\]Easyweb](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/zong-jue-sai-easyweb.md)
- [\[初赛\]Love Math](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/chu-sai-love-math.md)
- [\[华北赛区\]CyberPunk](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/hua-bei-sai-qu-cyberpunk.md)
- [\[华东南赛区\]Double Secret](https://gitbook-88.gitbook.io/ctf-writeup/2019/2019-ciscn/hua-dong-nan-sai-qu-double-secret.md)