added Connect Four Bot

Projects/3-Advanced/Connect-Four-Bot.md

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+# Connect Four Bot
+
+**Tier:** 3-Advanced
+
+Althought Connect Four seems like a simple game on par with Tic Tac Toe it is a lot more complicated. The purpose of this application is to provide practice on how to create complex bots.
+
+Create a Connect Four bot that the user can play against
+
+The game should follow the rules of a regular Connect Four game:
+-   Four in a row horizontally, vertically, or diagonally is a win.
+-   Each player gets to add one circle per turn.
+
+## User Stories
+
+-   [ ] User must be able to add circles to the board
+-   [ ] User should be able to fill the whole board
+-   [ ] User views the board at all times
+
+## Bonus features
+
+-   [ ] Create a simple Connect Four board to display moves.
+
+## Useful links and resources
+
+-   [Blog post for a Connect Four Bot using MiniMax](https://lukasvermeer.wordpress.com/2011/09/24/connect-four-and-minimax/)
+-   [Connect Four Bot using Game Tree Search](https://github.com/deloschang/Connect-4-AI)
+
+## Example projects
+-   [A video showing how to make a board in Python](https://www.youtube.com/watch?v=UYgyRArKDEs)
+-   [Long video showing the creation of the Bot](https://www.youtube.com/watch?v=MMLtza3CZFM)
+-   [Machine Learning Connect Four Bot](https://github.com/dandavies80/Connect4)