Scorevian: Analyze this game

Scorevian analyses your chess games with Stockfish and tells you what you actually did wrong. This extension is the one-click way to get an online game into it. Open any game on Chess.com or Lichess, click the Scorevian button, and the game opens in Scorevian with the analysis already running. WHAT YOU GET Every move graded: Brilliant, Great, Best, Excellent, Good, Book, Inaccuracy, Miss, Mistake, Blunder. An accuracy score for both players, and an estimated rating band. An evaluation graph across the whole game, from a deep engine search. A written review of the game in plain language. The opening named, and followed as far as theory goes. HOW IT WORKS The extension is a courier and nothing more. When you click the button it reads the game id out of the address of the tab you are on, and opens the matching Scorevian page. Scorevian then fetches that game from the public Chess.com or Lichess API and analyses it. That design is why the permissions are so small: One permission, activeTab, used only on the tab you clicked, only when you click it. No content script. Nothing is injected into Chess.com or Lichess pages, and nothing those sites show you is changed. No network requests from the extension, and nothing stored by it. Your Scorevian sign-in stays in the browser with the website. The extension never sees it and cannot act on your account. WHAT YOU NEED A Scorevian account, signed in at scorevian.com. The extension does not sign you in and never asks for a password. Scorevian also reads paper scoresheets. Photograph the scoresheet from an over-the-board game and it transcribes the moves and analyses that game the same way.