Weakness Scan
Scan your game history to discover systematic weaknesses
Platform
Time Control
Number of Games: 200
Chess Weakness Scanner — Find Your Recurring Mistakes
Stop repeating the same chess mistakes. Our cross-game weakness scanner analyzes your Lichess and Chess.com game history to uncover patterns of errors you make across many games — tactical oversights, endgame blunders, opening deviations, and more. Get a personalized weakness report with actionable improvement suggestions.
Cross-Game Pattern Detection
Scan up to 200 games from Lichess or Chess.com to identify recurring mistakes and weakness patterns that single-game analysis misses.
5 Weakness Categories
Weaknesses are classified into Tactical Oversight, Positional Misjudgment, Endgame Technique, Time Pressure Error, and Opening Deviation.
Real-Time Progressive Results
See weakness patterns appear in real time as your games are analyzed — no need to wait for the full scan to finish.
Actionable Practice Suggestions
Each weakness comes with improvement tips and a one-click link to practice the position in the analysis board or on Lichess.
Chess Weakness Patterns We Detect
The scanner clusters your errors by game phase, category, and sub-type to surface the most impactful recurring weaknesses:
Middlegame tactical oversights
Recurring positional misjudgments
Endgame technique errors by material type
Time pressure mistakes
Opening deviations from book lines
Blunders in specific pawn structures
Missed tactical opportunities
Errors in rook endgames
Knight vs bishop imbalance mistakes
Weak square exploitation failures
King safety neglect patterns
Piece activity misjudgments
How the Chess Weakness Scanner Works
Enter Your Username
Type your Lichess or Chess.com username, choose time controls, and set how many recent games to scan (up to 200).
Automatic Game Analysis
The scanner imports your games and analyzes every move with Stockfish, detecting inaccuracies, mistakes, and blunders.
Review Your Weakness Report
Browse a visual report with category distribution charts, pattern lists sorted by recurrence, and detailed position breakdowns.
Practice & Improve
Click any weakness pattern to see the exact positions where you went wrong, then practice them directly in the analysis board.
Chess Weakness Scanner FAQ
What platforms are supported?
The weakness scanner supports both Lichess and Chess.com. Enter your username from either platform to get started.
How many games can I scan?
You can scan up to 200 of your most recent games per scan. The scanner filters by time control (bullet, blitz, rapid, classical) so you can focus on the formats you play most.
What types of chess weaknesses does it detect?
The scanner identifies five categories: Tactical Oversight (missed tactics in the middlegame), Positional Misjudgment (strategic errors), Endgame Technique (endgame mistakes grouped by material type), Time Pressure Errors (mistakes in time trouble), and Opening Deviations (recurring errors in your opening repertoire).
Is the weakness scan free?
The scan uses Stockfish engine analysis running in your browser — no server costs, no credits required. It is completely free to use.
How long does a scan take?
Scanning 200 games typically takes 2–5 minutes depending on your device. You can see progress and discovered weaknesses in real time while the scan runs.
Can I resume an interrupted scan?
Yes. If a scan is interrupted (e.g., you close the tab), progress is saved locally. You can resume from where you left off next time.