Understand your games,
not just the eval.
Upload your PGN and get plain‑English explanations of critical moments, best moves, and the lessons that actually stick.
Free to start • No credit card required • Sign in with Google
Stop guessing. Start learning.
❌ The Problem
- →Engine evaluations tell you what, not why
- →Missed tactical themes go unnoticed
- →No context for critical turning points
- →Overwhelming data, no actionable lessons
✓ The Solution
- →Plain-language explanations for every critical moment
- →Compare best moves vs what you played
- →Highlighted turning points with eval deltas
- →Key takeaways you can apply immediately
What You Get
Everything you need to understand and improve your chess
Critical Moments Detection
Automatically identifies turning points where the game shifted significantly
Best vs Played Comparison
See the best move alongside what you played, with eval deltas explained
Plain-Language Explanations
No chess jargon. Clear, conversational insights you can actually understand
Key Takeaways
Actionable lessons summarized at the end of each analysis
Keyboard Navigation
Fast, efficient review with arrow keys and shortcuts
Privacy First
Your PGNs are never shared. Analysis happens securely and privately
How It Works
Three simple steps to better chess understanding
Upload Your PGN
Drop your game file from Chess.com, Lichess, or any standard PGN format
Get Annotated Analysis
See your game timeline with critical moments highlighted and coach insights
Learn Key Takeaways
Review actionable lessons and patterns to improve your next game
Simple, Transparent Pricing
Start free forever. Upgrade when you need more.
Free
Perfect for learning the basics
- ✓Plain-English mistake explanations
- ✓5 AI deep-dives per day
- ✓Critical moments auto-detected
- ✓Interactive game replay
- ✓Full engine analysis
Premium
For serious improvement
- ✓Everything in Free
- ✓Unlimited AI deep-dives
- ✓Opening repertoire insights
- ✓Weekly progress reports
- ✓Pattern recognition training
- ✓Export annotated PGNs
Frequently Asked Questions
What file types are supported?
We support standard PGN files from Chess.com, Lichess, and any platform that exports PGN format. You can upload single games or multiple games at once.
Is my data private?
Absolutely. Your PGNs are processed securely and never shared with anyone. We don't sell or distribute your game data. Your privacy is our priority.
Will it stay free?
Yes! We offer a generous free tier with 5 AI position analyses per day. Premium subscribers get unlimited analyses with deeper tactical analysis and advanced AI explanations.
How is this different from engine analysis?
Traditional engines show numbers and best moves. Chessplain explains why moves matter, highlights critical moments, and gives you actionable lessons in plain English.
What chess level is this for?
Chessplain works for everyone from beginners to advanced players. The explanations adapt to focus on the concepts most relevant to your level.
Stop guessing. Start improving.
Transform how you learn from every game you play
Get Started FreeSign in with Google • Takes less than 30 seconds