As of right now, current Chicken Fortress 3 does not work with current HL or CS 1.6. So, I've made a package containing Chicken Fortress, using HL 2015 as a base.
If you would like to host a server (PLEASE DO), here is a batch file to run. Make sure to run it inside your Chicken Fortress folder where hlds.exe is located, otherwise it won't work!
DownloadThe server browser probably won't pick up the server (nor won't your steam status, it will default to Half-Life), so make sure to share the IP it shows on your server console to whoever you plan on playing with.