System Design

🏗️ Architecture Overview

The project is structured in a layered architecture to separate user interface, chess logic, and board logic.

Layers

• UI Layer: Handles input/output and game flow (application/Program.java)
• Chess Layer: Implements chess rules, moves, and validation (chess package)
• Board Layer: Manages board, pieces, positions, and exceptions (boardgame package)

🧩 Main OOP Concepts Used

• Classes and Objects
• Encapsulation
• Inheritance
• Polymorphism
• Abstraction (abstract classes, methods)
• Custom exception handling

📦 Package Structure

boardgame package

• Position: Board coordinates (row, column)
• Board: Board logic, pieces, and rules
• Piece: Generic chess piece superclass
• BoardException: For invalid board operations

chess package

• ChessMatch: Controls game logic and flow
• ChessPiece: Extends Piece for chess-specific logic
• ChessPosition: Converts chess notation (e.g., e4) to matrix positions
• ChessException: Handles chess-specific errors

Implemented Pieces

• King (incl. castling)
• Queen
• Rook
• Bishop
• Knight
• Pawn (incl. promotion, en passant)

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