---
# edu-lqky
title: 'Write §11: Exercise 3 — train the network on MCTS data'
status: completed
type: task
priority: normal
created_at: 2026-03-13T20:03:17Z
updated_at: 2026-03-16T00:32:55Z
parent: edu-coqp
---

Exercise: generate training examples (state, policy vector, value) from pure MCTS self-play; run one training epoch; log loss.

## Summary of Changes\n\nWrote full content for §11: Exercise 3 covering MCTS data generation pipeline, TrainingExample struct, mini-batch SGD training loop, loss tracking, network evaluation, and experimentation prompts.