Requirements

1. User Interface:
   • The game should have a graphical user interface (GUI) that represents the chessboard and the pieces.
   • Players should be able to join as either "White" or "Black".
2. Game Logic:
   • The system must enforce the rules of chess, including legal moves for each piece, check, checkmate, and stalemate conditions.
   • Players should be able to take turns making moves.
3. Game State Management:
   • The game state should keep track of the current position of pieces, captured pieces, and whose turn it is.
   • The ability to save and resume games.
4. User Accounts:
   • Optionally, register and manage user accounts for tracking wins/losses.
5. Multiplayer Support:
   • The game should be able to support two players playing against each other, either locally or over a network.
6. Timer:
   • Optionally, implement a timer to limit the time each player can take for their moves.

Core Objects & Relationships

Define Core Objects

From the requirements, the core objects for the chess system are:

1. Game: Orchestrates the entire game lifecycle.
2. Player: Represents the two participants in the game.
3. Board: Represents the 8x8 grid with squares and pieces.
4. Cell: Represents each square.
5. Piece: Represents chess pieces (King, Queen, Rook, Bishop, Knight, Pawn).
6. Square: Represents individual squares on the chessboard.

Establish Hierarchy

To promote code reuse, the chess pieces will inherit from a common base class:

Piece (Abstract Class): Contains common attributes like position and color.

• King
• Queen
• Rook
• Bishop
• Knight
• Pawn

APIs & Class Members

For each class, define the attributes (data) it will hold and the methods (functions) that operate on the attributes. Ensure they align with the object's responsibilities and adhere to the principle of encapsulation. Write your code in the code editor below.

Deep Dive

SOLID Guidelines

• Single Responsibility: Each class has a single purpose (e.g., Game manages gameplay, Board manages the grid).
• Open/Closed: Classes can be extended for new functionality (e.g., adding AI) without modifying existing code.
• Liskov Substitution: Derived classes (King, Queen, etc.) can replace the base class (Piece) without breaking functionality.
• Interface Segregation: Methods are well-defined and specific to their roles.
• Dependency Inversion: High-level modules like Game depend on abstractions like Piece and not concrete implementations.