Requirements

Functional Requirements:

• Players place their mark (X or O) on an empty cell of the 3x3 grid. The system rejects placements on occupied cells.
• The system strictly alternates turns between the two players; X always moves first. A player cannot move out of turn.
• After each move, check all rows, columns, and both diagonals for three matching marks. If the board is full with no winner, declare a draw. Reject moves on occupied cells or out-of-turn moves.
• Players can start a new game at any time. The board clears, turn resets to X, and game status returns to active.

Non-Functional Requirements:

List the key non-functional requirements (eg thread safety, extensibility, maintainability, etc.)...

Core Objects & Relationships

Based on the requirements and use cases, identify the main objects of the system and analyze how they interact and relate to each other...

APIs & Class Members

Player: Stores identity.

Members: String name, PieceType piece.

Board: Manages the grid state.

Methods: initializeBoard(), isFull(), applyMove(int row, int col, PieceType p), getPieceAt(int row, int col).

Game: The controller.

Methods: startGame(), makeMove(int row, int col), switchTurn(), checkWinner().

Deep Dive

Explain design tradeoffs you considered. Check and explain whether your design adheres to SOLID principles. Explain how your design can handle changes in scale and whether it would be easy to extend with new functionalities. Identify areas for future improvement...