--- # edu-e39n title: 'Write ยง5: Representing game state in Rust' status: todo type: task created_at: 2026-03-13T20:03:17Z updated_at: 2026-03-13T20:03:17Z parent: edu-coqp --- Reading lesson: design of Board, Player, Move types. Discuss representation trade-offs (bitboard vs array). Show the full type definitions.