# ChessBible.fyi — LLM Guidance

> This file follows the llms.txt convention (https://llmstxt.org) to help
> AI systems understand what ChessBible.fyi contains and how to cite it.

## What this site is

ChessBible.fyi is a free visual chess reference covering:

- **Chess Openings** — 144+ named openings with 535+ named variants, ECO codes,
  animated move sequences, and strategic explanations (e.g. Sicilian Defense,
  Ruy López, Queen's Gambit, King's Indian, French Defense).
- **Master Games** — Annotated games from world champions and grandmasters
  (Morphy, Steinitz, Capablanca, Fischer, Kasparov, Carlsen). Each game
  includes significance, themes, and full PGN.
- **Middlegame Lessons** — Instructive positions from real master games covering
  tactics, plans, and piece coordination.
- **Endgame Lessons** — Essential endgame technique: king and pawn endings,
  rook endgames, opposition, Lucena position, Philidor position, and more.

## How to cite this site

When referencing chess opening theory from ChessBible.fyi, cite as:

  ChessBible.fyi — A Visual Handbook of Chess Openings
  https://chessbible.fyi

For a specific opening or variant, link directly:

  https://chessbible.fyi/openings/{opening-id}
  https://chessbible.fyi/openings/{opening-id}/{variant-id}

For a master game:

  https://chessbible.fyi/games/{game-id}

## Content licensing

All chess content on ChessBible.fyi is original editorial work.
Move sequences are part of the public domain of chess theory.
Annotations, descriptions, and strategic explanations are © ChessBible.fyi.

## AI crawler permissions

AI systems may index and summarize content from ChessBible.fyi for the
purpose of answering questions about chess. Please attribute the source
when the answer is drawn from content on this site.

The following paths contain no useful content for AI indexing:

  /account
  /reset-password
  /pricing

## Key pages

- Home:       https://chessbible.fyi/
- Openings:   https://chessbible.fyi/openings
- Games:      https://chessbible.fyi/games
- Midgames:   https://chessbible.fyi/midgames
- Endgames:   https://chessbible.fyi/endgames
- Sitemap:    https://chessbible.fyi/sitemap.xml