Chess Coach for ChatGPT

Chess Coach for ChatGPT reviews your finished Chess.com and Lichess games with Stockfish, then helps ChatGPT explain the key moments on an interactive board. It is the Chess Coach plugin developed by Chals AI, available from OpenAI’s plugin directory. Give it your chess username, a game link or a completed PGN and start with the game you just played.

How to install Chess Coach for ChatGPT

1. Open Chess Coach in OpenAI’s plugin directory. Check that the developer is Chals AI.
2. Click Install plugin, then Connect Chess Coach. Sign in with email or Google to connect your Chess Coach account.
3. Start a Work chat and select @Chess Coach. Send: “Analyze my last finished game. I'm your_username on Chess.com. Explain the key moments for a beginner.”

You do not need to copy a server address or enable developer mode. OpenAI explains plugin installation and mentions in its plugin guide. If installation is unavailable in your account or workspace, check its permissions and the Chess Coach setup documentation.

What happens when you analyze a game

Chess Coach finds your public, finished games and runs Stockfish on its own server. The engine returns evaluations and candidate moves; ChatGPT turns those results into explanations you can discuss. This separates calculation from the conversation: you can ask why a move mattered and follow the position on the board.

The review shows the moves you played, the better alternatives and numbered key moments. Red arrows mark the move played and green arrows mark the better move. Step through the game, follow the evaluation graph and try an idea on the board. Practice mistakes lets you revisit the positions where you went wrong and find a better move yourself.

Explore the real review board

This is the existing Chess Coach demo with a finished game. It shows the board’s controls and analysis; the surrounding ChatGPT conversation depends on your chat.

For more detail on the review, read how Chess Coach analyzes games. For the limits of a chatbot without an engine, see Can ChatGPT analyze chess games?.

Prompts for your first coaching session

Start with a finished game and one clear question. Replace the username with your own:

• “@Chess Coach, show my last five finished Lichess games. My username is your_username. Let me choose one to review.”
• “Review this completed PGN. Show the two or three moments I should learn from, using simple words.”
• “Show the position from the second key moment. What did my move leave undefended?”
• “Let me practice the mistakes from this game. Give me time to find the better move.”
• “Look at my openings with black. Which lines should I study next?”

Chess Coach can also build a five-area player profile and training drills during the full trial or with Pro. For broader study plans and ways to question an engine line, use our ChatGPT chess coach prompts.

A plugin with Stockfish, developed by Chals AI

Several products use the name “Chess Coach.” This page describes Chess Coach by Chals AI, installed through the public plugin listing above. It connects ChatGPT to the analysis service used by this website and by Chess Coach for Claude.

A prompt can guide a conversation, but it does not connect an engine by itself. Here the plugin supplies the Stockfish analysis and the board. If you want to understand the connection behind both assistants, read the chess MCP server overview.

Trial, plans and your games

Every new Chess Coach account starts with 7 days of full access, no card needed. After the trial it moves to Free unless you choose Pro. Free includes reviews of older games within fair-use limits and one recent game a day. Current limits and optional Pro pricing are on the plans page. Manage your subscription on the website; purchases are not offered inside the ChatGPT plugin.

Chess Coach reads public, finished games and never asks for your Chess.com or Lichess password. It does not assist during games in progress. See the privacy policy for data handling. Chess Coach is an independent Chals AI product and is not affiliated with OpenAI, Anthropic, Chess.com or Lichess.