Developer Builds Multiplayer Tic-Tac-Toe Backend in Go Without AI Coding Assistants

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A software developer intentionally built a multiplayer Tic-Tac-Toe backend in Go without the help of AI coding agents, choosing instead to design and debug every component manually. The project used HTTP endpoints and WebSocket connections to handle game creation, player turns, move validation, and real-time state broadcasting. The developer structured the codebase in layered responsibilities — HTTP handler, GameManager, Game, and Board — to keep logic cleanly separated and easier to reason about. A GameManager layer was introduced to handle multiple concurrent games without burdening the HTTP layer with state management. The author's stated goal was to use a simple, well-understood problem domain to focus on backend architecture decisions rather than complex business logic.

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