---
# edu-e39n
title: 'Write §5: Representing game state in Rust'
status: completed
type: task
priority: normal
created_at: 2026-03-13T20:03:17Z
updated_at: 2026-03-13T22:56:30Z
parent: edu-coqp
---

Reading lesson: design of Board, Player, Move types. Discuss representation trade-offs (bitboard vs array). Show the full type definitions.

## Summary of Changes

Wrote full content for §5 covering Rust game state representation: Player enum, GameState struct, board indexing, Display impl, move generation, winner checking, and immutable apply_move design.