• Summary:

  • This is a command-line Chess game implemented with a multi-threaded AI player algorithm using Java.
  • The following Chess features are implemented:
    • all piece-specific rules including castling, en-passant, promotion
    • checkmate & stalemate detection
    • threefold repetition rule

• Demo Screenshots:

  • Player (white) move 1 selection:
    • 
  • AI (black) move 1 selection:
    • 
  • Player (white) move 2 selection:
    • 
  • AI (black) move 2 selection & Player (white) is in check:
    • 

• How to run the game:

  • alternative 1:
    • please have Java JDK 16.0.2 or newer installed on your system
    • in a terminal window, run the "chess.jar" file in the same directory as this README file using the following command: "java -jar chess.jar"
  • alternative 2:
    • using a Java IDE configured with Java 16.0.2, run the main function inside Main.java

• How to play the game:

  • the user is White and the AI player is Black
  • the user is prompted to make the first move by entering:
    • the start position of the move (a piece belonging to the user)
    • the destination position of the move (a desired destination square)
  • the AI player (Black) then makes its move and the updated state of the chess board is displayed
  • if an opponent is put in check after a move is made by either player, it will be announced in the console
  • the previous steps are repeated until one of the following situations occur:
    • stalemate is detected, in which case a message will be displayed and the program terminates
    • checkmate is detected, in which case the winner is announced and the program terminates
    • the game draws by the threefold repetition rule: the state of the Chess board remains unchanged after 3 turns

• Time complexity: Please see time_complexity.txt for detailed analysis