Chrome Extension
Reads your board live on any chess platform. Auto-syncs with your game — lightweight and private.
What It Does
- Live board reading — automatically detects the position on any chess site
- Side panel analysis — Stockfish 18 runs in the side panel, never touches the site
- Human Mode — natural-looking move suggestions for realistic practice
- AI Coach commentary — explains every move in plain language
- Lightweight — runs in a separate side panel, independent from the page
Installation
- Download the .zip file below and unzip it
- Open Chrome and go to
chrome://extensions - Enable Developer mode in the top-right corner
- Click "Load unpacked" and select the unzipped extension folder
- Sign in through the extension popup with your Premium account
- Open any chess platform and the side panel reads your board live
Free download · Premium account required to activate
How the Chrome Extension Works
The Chrome extension runs in a side panel next to your chess board. It reads the board position and hands it to Stockfish 18 for analysis. All processing happens inside the extension's own sandboxed context — lightweight and independent.
All analysis and AI Coach commentary happen in the side panel next to your chess tab. Clean, fast, and built for studying positions in real time.
Platform Compatibility
Works on every major chess platform. The board reader auto-detects the layout on each site:
- Any site that renders a chess board in HTML/SVG/Canvas
- Works during live games, puzzles, analysis boards, and tournament broadcasts
- Supports both white and black perspectives automatically
- Handles board flips, move takebacks, and engine moves in real time
Installation is side-loaded (not from the Chrome Web Store) so there's no risk of store removal. You can also install it on Brave, Edge, Opera, or any other Chromium-based browser — the same .zip works everywhere.
Common Questions
How does it work?
The extension runs in a separate side panel and reads the board position visually. Human Mode adds natural variation to move timing and selection for realistic practice.
Do I need a Premium account?
Yes — the extension reads the Stockfish-18 analysis depth tied to your Premium license. Premium starts at $9.99 for 30 days.
Does it work offline?
Partial — Stockfish in the side panel works after the extension loads once, but the AI Coach commentary needs internet to reach the GPT backend. For fully offline analysis, grab the desktop app.
Can I use it on multiple computers?
Yes — one Premium account can sign into the extension on multiple devices. Each install is lightweight (under 5 MB).