About FireChess
The all-in-one chess improvement platform
What is FireChess?
FireChess is a free chess analysis and training platform that connects to your Lichess or Chess.com account and scans hundreds of your games to find patterns in your play. Instead of reviewing one game at a time, FireChess aggregates data across your entire game history to surface the mistakes you keep repeating — then helps you fix them with targeted training, puzzles, and interactive drills.
How It Works
- Enter your chess username — we fetch your publicly available games from the Lichess or Chess.com API.
- Browser-side analysis — Stockfish 18 runs entirely in your browser via WebAssembly (WASM). Your games never leave your device.
- Pattern detection — we group positions you've reached multiple times and flag where you consistently play suboptimal moves.
- Train your weaknesses — drill your opening leaks, solve personalized puzzles, play through GM games, or dive into the Puzzle Dungeon.
Core Features
Game Scanner
Scan up to 5,000 games for opening leaks, missed tactics, endgame mistakes, and time management issues. Strengths radar, motif patterns, and interactive drill mode included.
📋PGN Analyzer
Paste any PGN for full move-by-move analysis with move classification (brilliant, best, good, inaccuracy, mistake, blunder), eval bar, and positional explanations.
🏋️Weakness Trainer
Six training modes including Weakness Puzzles, Speed Drills, Blunder Spotter, Opening Trainer, Endgame Gym, and Time Pressure — all drawn from your real games.
🏰Puzzle Dungeon
A roguelike puzzle adventure. Fight through dungeon nodes, solve increasingly difficult tactics, earn perks, battle bosses, and see how deep you can go.
🤔Guess the Move
Play through famous grandmaster games and try to guess each move. Score points for matching the GM's choices and learn from the best.
🔥Guess the Elo
Watch real games with hilarious Gotham-style roast commentary, then guess the players' Elo rating. Features 600+ unique roast lines and text-to-speech.
📖Opening Explorer
Browse opening guides with win-rate statistics, key variations, and interactive boards. Filter by difficulty level and category.
🏆Leaderboard
Compete with other players on the FireChess Score leaderboard. Compare accuracy, tactical skill, and endgame precision.
What the Scanner Detects
Opening Leaks
Repeated positions where you consistently play the wrong move.
Missed Tactics
Forks, pins, combinations, and wins you missed across your games.
Endgame Mistakes
Rook, pawn, and minor piece endgames where you lost winning positions.
Time Management
Wasted time, rushed moves, and time pressure patterns.
Dashboard & Progress Tracking
Your personal Dashboard tracks your improvement over time with:
Cosmetics & Coin Shop
Earn coins by completing analyses, training sessions, daily challenges, and login streaks. Spend them in the Coin Shop on custom board themes, piece sets, eval bar skins, profile titles, and avatar frames. All cosmetic — no pay-to-win.
Privacy First
Your games are analyzed entirely in your browser. Stockfish 18 runs as a WebAssembly module — no game data is sent to our servers. The only data we store is analysis reports you explicitly choose to save to your Dashboard. Read our full Privacy Policy.
Technology
Stockfish 18
WASM engine
Next.js 15
React framework
Lichess API
Game data
Chess.com API
Game data
Free vs Pro
Free
300 games/scan, depth 12, 10 tactics & endgames per scan, all scan modes, strengths radar, opening explorer, Guess the Move, Puzzle Dungeon, Guess the Elo, save reports.
Pro — $5/mo
5,000 games/scan, depth up to 24, unlimited tactics & endgames, motif pattern analysis, time pressure detection, all 6 drill modes, deep study plans, and full mental game breakdown.
Lifetime — $59
Everything in Pro, forever. One-time founding member price — no recurring fees.
Frequently Asked Questions
Is FireChess free?
Yes. The free tier lets you scan up to 300 games at depth 12, play Guess the Move, try the Puzzle Dungeon, and more. Pro unlocks higher limits, deeper analysis, and extra training modes.
Does FireChess store my games?
No. All analysis runs in your browser via Stockfish 18 WASM. We only store reports you explicitly choose to save to your Dashboard.
What is an "opening leak"?
A position you've reached multiple times and consistently played a suboptimal move. FireChess detects these patterns across your game history so you can fix them.
Can I use this for cheating?
No. FireChess analyzes past games for learning, not live games. Our Terms of Service prohibit using the tool to cheat.
Which time controls are supported?
All time controls — bullet, blitz, rapid, and classical. You can filter by time control in the scanner.
What platforms are supported?
FireChess works with both Lichess and Chess.com. Just enter your username and we'll fetch your games via their public APIs.
Is there a lifetime option?
Yes. We offer a Lifetime plan for a one-time payment that gives you Pro features forever. Check the Pricing page for details.
Ready to find your chess weaknesses?