Two useful continuations.
Compare the engine’s best and second-best moves, follow their replies, and see arrows on a verified source board. Flip the board without losing the position.
YOUR BOARD. A LITTLE MORE INSIGHT.
A better look
at every move.
Bring Knight Club to your browser. Explore your games with local Stockfish analysis, useful move grades, and the next two moves worth considering.
Get the extensionFree with sign-in · v1.3.1 · Chrome 116+ · ZIP
First time installing? Follow the three steps below.♞ KNIGHT CLUB LOCAL ENGINE
A POSITION WORTH REVISITING
2. g4?? Blunder
Example: g4 allows Qh4# — checkmate in one.
Best move Qh4#Next move See the replies →
Analysis on your device Chrome side panel PGN import & export
MAKE THE NEXT REVIEW COUNT
Less guesswork. More understanding.
A grade with context.
Best, Good, Inaccuracy, Mistake and Blunder compare the position before and after a move. Great and Brilliant use additional heuristics; labels are estimates, not guarantees.
The complete game, revisited.
Run a whole-game report, select moves in the timeline, or step with Left/Right. Import PGN when a page hides moves, and export your game before closing the panel.
THREE STEPS. YOUR NEXT REVIEW.
Settle in. Set it up.
- 01
Download & extract
Save the ZIP and extract it into a folder you can keep. Chrome loads the extracted folder, not the ZIP.
- 02
Load it in Chrome
Open chrome://extensions, turn on Developer mode, choose Load unpacked, and select the folder containing manifest.json.
- 03
Allow Chess.com access
Open the extension’s Details → Site access and allow Chess.com. Open a game or analysis page, click the Knight Club icon, then Reconnect.
This is an unpacked developer release, not a Chrome Web Store listing. Review its requested permissions before loading it. The ZIP includes extension source and license information.
A SHORT GUIDE TO ENGINE REVIEW
Read the position, then the number.
What does +2 mean?
Evaluations are shown from White’s perspective. A positive score favors White, a negative score favors Black. A score near +2 is roughly a two-pawn evaluation advantage; it does not mean White has captured two extra pawns. A mate score means the engine has found a forced mating line.
Why did my grade change?
The engine compares its preferred move with the position after the move played. Short searches can miss a defense or tactic, so Bullet fast favors speed and deeper searches give the engine more time. Use the actual replies to understand a mistake rather than relying on the label alone.
How should I study a game?
Start with the first large evaluation swing. Before turning on arrows, look for checks, captures and threats yourself. Then compare your candidate with both engine suggestions. Try the replies in Knight Club’s play-both-sides mode, return to the original game, and finish with one idea to practice.
A FEW THINGS TO KNOW
Questions, answered.
The panel cannot access Chess.com.
In chrome://extensions, open Knight Club → Details → Site access and allow Chess.com. Refresh the game page and click Reconnect. Reload the extension after replacing its files with a new version.
The board or some moves are missing.
Wait for the board animation to finish and select a main-line move. If Chess.com does not expose the whole notation, export its PGN and use Import complete PGN. The reader checks the legal history against the displayed pieces before showing arrows.
Does it run in the browser shown inside this website?
The extension must be installed in Chrome. The web app is a separate way to play and review. Native Chrome behavior can differ from the development preview; page updates may require reader fixes.
What about speed and automatic moves?
Bullet fast uses short searches. Optional automatic controls are off until enabled and are experimental; some page builds reject synthetic input. They stop on rejected input, and promotions require a manual move. Use engine assistance only in contexts where the game’s rules allow it. Knight Club does not promise undetectable assistance.
What information leaves my computer?
Stockfish analysis runs in a local worker. The extension requests Chess.com access to read board notation and draw annotations; its package includes its source. Panel analysis is kept in memory, so export PGN to retain the game. The website has separate privacy information covering accounts and advertising.
Bring your next game to the club.
Download the companion, or start a game right here.