readme and attributions

README.md

@@ -1,3 +1,57 @@
 # TCP Connect 4
 
-type `nc cqql.site 1234` to start playing connect 4 against an ai in your terminal.
+*type `nc cqql.site 1234` to start playing connect 4 against an ai in your terminal*
+
+## Game
+
+I just really wanted to make [Connect 4](https://en.wikipedia.org/wiki/Connect_Four) playable in the terminal from anywhere in the world without any installations (assuming you have netcat installed and using a linux terminal because who else would be the target demographic for this :3).
+
+This is what you should see when you connect:
+```
+Connect 4
+Choose your difficulty [1-9]: 3
+Move 0:
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ 1 2 3 4 5 6 7
+
+Choose column: 5
+[AI thinking]
+
+Move 2:
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · ○ ● · · 
+ 1 2 3 4 5 6 7
+
+Choose column: 5
+[AI thinking]
+
+Move 4:
+ · · · · · · · 
+ · · · · · · · 
+ · · · · · · · 
+ · · · · ○ · · 
+ · · · · ● · · 
+ · · · ○ ● · · 
+ 1 2 3 4 5 6 7
+```
+
+(and so on)
+
+have fun! 🎉
+
+## Attributions
+
+The AI behind this was coded by [balkarjun](https://balkarjun.github.io), which I translated into Rust and got their permission to use it for this project, as long as it stays open source. I couldn't stop myself from using it after I saw how neatly it checks win conditions which I [posted about on fedi](https://tech.lgbt/@cqql/113330046815399664). 
+
+The logic is written up in great detail on balkarjun's blog in this article: [Exploring Board Game AI Algorithms: Minimax](https://balkarjun.github.io/blog/minimax-connect-four/). It's worth a read, especially to learn more about traditional AI.
+
+I coded the socket interface and then added a lot of logging just for coding practice. It you'd like a leaner version of the code, take a look at [this commit](https://moonlit.technology/cqql/tcp-connect4/commit/016b3aa6cfeeeb2e53b2cd4a132357b1e3ea1022).