Running a million-board chess MMO in a single process · eieio.games

A detailed technical breakdown of building One Million Chessboards, a real-time multiplayer chess game running on a single Go process. The author explains the architecture decisions, including using a dense 8000x8000 array for the board state, implementing rollback netcode for instant moves, optimizing bandwidth with protobuf compression, and handling concurrent access with mutexes. The post covers distribution strategies using snapshots and move batches, profiling techniques, and lessons learned about game design versus technical showcasing.