Chess, solved
in real time.
Browser extension powered by server-side Komodo & Stockfish engines. Real-time analysis, human-like suggestions, 12,000+ openings — zero load on your device.
Works on Chess.com and Lichess — the two platforms serving over 160 million players worldwide. Powered by the same engines trusted by FIDE-titled players and top chess coaches.
Everything you need to
master chess
Powered by the strongest chess engine. Analyze, learn, and improve with real-time guidance.
Real-Time Analysis
Server-side Komodo & Stockfish — zero load on your device
Engine Power
Opening Mastery
8 Personalities
Unique play styles
Advanced
Chess.com
LichessChoose your plan
Start free, upgrade when ready. No hidden fees.
Early Access: Get 15% off for life. Lock in your discount now.
Free
Start learning for free
- Move suggestions + arrows
- ELO 300-2000
- 2 PersonalitiesEngine: Plays like an engine with minimal errorsAggressive: Attacks relentlessly, prefers active pieces
- Live game analysis
- Live Evaluation bar
- 8 Openings
- Chess.com & Lichess
Premium
Best value - 2 months free
3-day free trial • No card requiredSign up and start your free trial instantly
Everything in Free, plus:
- Full ELO range (300-3500)
- All 8 PersonalitiesEngine: Plays like an engine with minimal errorsAggressive: Attacks relentlessly, prefers active piecesDefensive: Emphasizes king safety above allActive: Open positions and well-placed piecesPositional: Solid play and maneuveringEndgame: Prefers promoting pawnsBeginner: Basic mistakes and capturesHuman: Plays like strong human players
- Per-phase game analysis
- Armageddon mode
- +12k Openings with deviation detection & smart suggestions
- Puzzle support
- Priority support
Lifetime
Pay once, own forever
Everything in Premium, plus:
- One-time payment
- Lifetime access
- All future updates
Questions? Answers.
Everything you need to know about Chessr — trusted by players on Chess.com, Lichess, and WorldChess.
What is Chessr and how does it work?
Chessr is a browser extension that acts as your personal chess coach. It uses two powerful server-side engines — Komodo for human-like move suggestions and Stockfish for deep analysis — so there's zero load on your device. It suggests moves adapted to your skill level and helps you understand why certain moves are strong. It works directly on Chess.com, Lichess, and more platforms coming soon.
What platforms and devices are supported?
Chessr works on Chess.com, Lichess, and WorldChess, with more platforms coming soon. It's available as a browser extension for Chrome on desktop, and also works on mobile devices through compatible browsers. Play and learn anywhere!
What ELO levels does Chessr support?
Chessr covers the full spectrum from beginner to master level. Free users can access ELO 300-2000, while Premium unlocks the full 300-3500 range. The engine auto-detects your rating and adapts suggestions to help you improve naturally.
What are the 8 Personalities?
Personalities change how the engine plays: Engine (minimal errors), Aggressive (attacks and Queen play), Defensive (king safety focus), Active (open positions), Positional (solid maneuvering), Endgame (pawn promotion focus), Beginner (basic play), and Human (plays like strong humans). Free users get 2, Premium unlocks all 8.
Is Chessr free?
Yes! Chessr offers a generous free tier with move suggestions, live evaluation bar, 2 personalities, 8 openings, and ELO up to 2000. Premium unlocks all 8 personalities, full ELO range (300-3500), +12k openings with deviation detection & smart suggestions, Armageddon mode, and more. Early access users get 15% off for life!
Is there a free trial?
Yes! Premium includes a 3-day free trial — just link your Discord account to get started, no credit card required. Each user gets one free trial. You can cancel anytime, and we offer a 14-day money-back guarantee on all paid plans.
What is Armageddon mode?
Armageddon mode is a Premium feature that creates high-stakes situations where you must win. It's perfect for practicing under pressure and improving your winning technique in critical positions.
Does Chessr include an opening repertoire?
Premium includes a massive library of +12,000 openings with real-time deviation detection and smart suggestions. When your opponent deviates from known theory, Chessr instantly detects it and suggests the best response. Free users get access to 8 openings to get started, while Premium unlocks the full library with deviation alerts and personalized opening recommendations.
Still have questions?
Ask on Discord