Everything it does
Not just arrows. A full engine overlay.
Candidate arrows
Color-coded moves, ranked by strength
Up to 5 candidate moves drawn as arrows on your board. Each one is colored by quality: best move bright green, weaker options fading toward red. You see the whole picture, not just one answer.
Evaluation bar
See who's winning in real time
A live bar tracks the engine evaluation as every move plays out. Watch it shift when a blunder lands or a win slips away. White or black advantage, always visible at a glance.
Move classifications
Brilliant, best, blunder. As it happens.
Every move gets a badge the moment it's played: Brilliant (!!) · Great (!) · Best · Excellent · Good · Inaccuracy · Mistake · Blunder. Post-game review quality, running live.
Full coverage
Both sides. Both platforms. Every game.
Analysis runs on every position change, for your moves and your opponent's. Works on Chess.com and Lichess. Every finished game auto-syncs to ChessSolve for later replay.
Bonus: Puzzle Trainer
Train your eye. Spot the move yourself next time.
3,100+ ELO-rated puzzles that get harder as you improve. Seeing the arrows in your games is one thing. Knowing why they're right is what actually makes you better.
Adaptive difficulty
Your rating adjusts after every puzzle using the ELO formula. Harder as you improve, easier when you struggle.
Timed solving
Race the clock. Timer length scales with puzzle rating to keep every challenge fair.
Daily streaks
Solve at least one puzzle a day to keep your streak alive. Miss a day and it resets.
Global leaderboard
Compete on the puzzle rating leaderboard. Top 3 players get a podium.
Free: 20 puzzles/day · Premium: unlimited
Bonus: Analysis Board
Analyze any position, any time.
Paste a FEN or PGN into the free analysis board and explore any position with Stockfish. Step through moves, see the evaluation bar shift, and find exactly where it went wrong.
Evaluation bar
A live bar shows white's advantage as positions change. Spot swings at a glance, no numbers required.
Up to 5 best-move arrows
Green arrows ranked by engine preference. See all candidate moves at once, not just the top choice.
Full move navigation
Step forward and back through every move. Use arrow keys or click any move in the list to jump instantly.
Free exploration
Drag pieces to explore variations off the mainline. Navigate back and the recorded game resumes.
Free to use, no account required
How it works
Up and running before your next game
Two minutes to install. Then just play. The extension does the rest.
Install the extension
Add from the Chrome Web Store. One click, no developer mode needed.
Create a free account
Sign in directly from the extension popup. No credit card required.
Open a game
Start or join a game on Chess.com or Lichess exactly as you normally would.
Click Start
Hit Start in the popup. Arrows, eval bar, and classifications appear instantly.
Comparison
Your opponents study with engines. Now you can too.
Just not in rated games. That's cheating. But in training? It's the fastest way to get better.
ChessSolve
- Color-coded candidate arrows, up to 5, ranked by move strength
- Live evaluation bar that updates on every single move
- Real-time move classifications: brilliant, best, inaccuracy, blunder
- Analysis on both sides: your moves and your opponent's
- One extension for Chess.com and Lichess, powered by Stockfish
Built-in platform analysis
- Post-game review only, no analysis while the game is live
- One suggested move, no ranking or candidates
- No evaluation bar
- No move classifications during play
- Separate tools per platform, requires leaving the board
For training only. Using engine assistance in rated games violates platform terms of service.
Our ethics guide →What players say
Real players. Real improvement.
“My rating went up like 150 points and I think a big part of it is I just see the board differently now. The arrows show you stuff you'd never notice on your own.”
James W.
1490 Rapid
“The eval bar is wild. You think you're totally fine and then one move later it's +2 for your opponent. Never really got how fast positions change until I watched it live.”
Priya M.
1720 Blitz
“I blunder less. That's honestly it. Used to drop pieces for nothing all the time, now I at least see the threat before I walk into it. Most of the time.”
Tom H.
1150 Rapid
“Me and a friend use it during practice games. We pause and talk through the arrows together. Probably the most useful thing I've done for my chess in years.”
Lucas B.
2100 Classical
“Good for prep in lines I don't know well. When everything turns red I know I messed up somewhere. Wish there were more depth options in premium but overall solid.”
Nikolai V.
1950 Rapid
“Downloaded it on a whim. Honestly didn't expect much. But my games feel less random now. Like I actually understand what's happening instead of just moving pieces.”
Claire D.
900 Rapid
Pricing
Free to start. Upgrade anytime.
Free
Everything you need to get started.
- 100 positions per day
- 1 best moves per position
- 3 puzzle hints per day
- Chess.com & Lichess
- Real-time board arrows
Plus
Cancel anytime. No contracts.
- Everything in Free
- 500 positions per day
- 3 best moves per position
- Unlimited puzzle hints
Premium
Cancel anytime. No contracts.
- Everything in Plus
- Unlimited positions per day
- Up to 3 best moves per position
- Higher engine depth
FAQ
Common
questions
Everything you want to know about ChessSolve. Honest answers, no fluff.