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This is a medium difficulty Software Engineering Fundamentals question, commonly asked during Technical Screen rounds at Zipline.

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This question is commonly asked for Software Engineer candidates at Zipline during technical interviews.

Design a Checkers Game Simulator | Zipline Interview Question

Q: Design a Checkers Game Simulator

This question evaluates object-oriented design skills, state modeling, rule-based algorithm development for move validation and game-state transitions, API specification, and robust error and edge-case handling.

Design and partially implement an object-oriented simulator for a two-player checkers-like board game.

Requirements:

The game is played on an 8 x 8 board.
Two players take turns moving pieces diagonally.
Regular pieces move one step diagonally forward into an empty square.
A piece may capture an opponent piece by jumping diagonally over it into an empty square immediately beyond it.
If a piece reaches the opposite end of the board, it is promoted to a king.
Kings may move diagonally both forward and backward.
The simulator should validate moves, apply legal moves, reject illegal moves with clear errors, and track whose turn it is.
The simulator should detect basic game-ending conditions, such as a player having no pieces or no legal moves.

Your task:

Propose a clean object-oriented design, including classes, interfaces, and responsibilities.
Define the public APIs clearly enough that another engineer could use your simulator.
Implement or describe the key algorithms for move validation, move execution, captures, promotion, and game-over detection.
Discuss important edge cases and error handling, especially for invalid board coordinates, invalid turns, illegal moves, and inconsistent game state.

Design and partially implement an object-oriented simulator for a two-player checkers-like board game.

Requirements:

The game is played on an 8 x 8 board.
Two players take turns moving pieces diagonally.
Regular pieces move one step diagonally forward into an empty square.
A piece may capture an opponent piece by jumping diagonally over it into an empty square immediately beyond it.
If a piece reaches the opposite end of the board, it is promoted to a king.
Kings may move diagonally both forward and backward.
The simulator should validate moves, apply legal moves, reject illegal moves with clear errors, and track whose turn it is.
The simulator should detect basic game-ending conditions, such as a player having no pieces or no legal moves.

Your task:

Propose a clean object-oriented design, including classes, interfaces, and responsibilities.
Define the public APIs clearly enough that another engineer could use your simulator.
Implement or describe the key algorithms for move validation, move execution, captures, promotion, and game-over detection.
Discuss important edge cases and error handling, especially for invalid board coordinates, invalid turns, illegal moves, and inconsistent game state.

Design a Checkers Game Simulator

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Design a Checkers Game Simulator

Quick Overview

Solution

Submit Your Answer