Opponent risk overlay for Chess.com & Lichess. Win rates, accuracy analysis and account age, all from public data.
Users
459
+108 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
6
0 in 30 days
Store rank
#41K
#37K among extensions
Version
1.8.0
updated 6 Nov 2026
Users
monthly, 8 months
Latest, 12 Nov 2026:459 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 12 Nov 2026:6 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Chess Risk Score
♟ CHESS RISK SCORE - Know who you're playing.
Chess Risk Score gives you an automatic risk assessment of any opponent on Chess.com and Lichess, right inside the game page - plus optional W/L/D stats and risk scores next to player usernames.
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NEW IN 1.8.0
📈 My stats: look up any Chess.com or Lichess player and see Insights, Form, Skills and Cheaters
♞ Skills: every game checked by a chess engine (Stockfish) running in your browser: opening, tactics, endgames and clock, each against typical players at your rating
💡 Insights: what is and isn't holding you back, in plain words, always compared with a benchmark
⚖ Fairer scores on Chess.com: long-time accounts are scored by a model trained on accounts closed for fair play, with cut-offs per rating group, so strong players are flagged less
⚡ Faster: a Lichess player you have looked up before loads in under a second
🔔 Sound alerts (off by default): Harp, Low bell or a Russian GM voice when a risky opponent loads
🚩 Report button: opens Chess.com's report window, or reports on Lichess in one click
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HOW IT WORKS
When you start, spectate, or review a game, Chess Risk Score automatically:
Detects the players in the game
Fetches their public stats from the Chess.com or Lichess API
Calculates a risk score from 0-100
Displays everything in a clean, draggable overlay
Optionally embeds W/L/D stats and risk scores next to usernames on both sides of the board
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WHAT'S MEASURED
📊 Overall Win Rate - All-time win percentage. Win rates above 50% begin contributing to risk.
📈 Recent Win Rate - Last 2 months only. Highlights a recent jump in results compared with a player's all-time record.
🎯 Accuracy Analysis - Accuracy thresholds calibrated per rating band and time format. Flags players consistently performing above the expected accuracy for their rating level.
⏰ Account Age Factor - Accounts under a year old get a risk multiplier. Brand-new accounts (under 7 days) score up to 5x higher.
🏅 Title Factor (Lichess) - Verified GM and IM titles receive reduced risk scores on Lichess. Chess.com needs no discount: the formula judges every player against others of the same rating.
🧩 Behaviour Signals (Chess.com) - Lifetime games played, account age, share of games at 90%+ accuracy and best single-game accuracy (both against what is normal for the rating), results against opponents' ratings, clock left at the end of games, and share of very short games. Their weights come from 11,298 accounts closed for fair play compared with 37,807 normal accounts.
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AT-A-GLANCE RISK CHIPS
Small tags surface the biggest drivers of a player's score without reading the breakdown - for example New account, Win streak, Hyper-accurate, High win rate, Few games, 90%+ games, Clock to spare, Short games, and Beating ratings. Toggle them on or off in Settings.
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PLAY YOUR WAY
📋 Normal Mode - Full risk profile shown automatically when a game starts: score, stats, accuracy, insights table, and score breakdown all visible.
🧘 Semi-Zen Mode - Shows only the risk score circle during the game. Expand to the full profile with one click when you want more detail.
🧘 Full Zen Mode - Hides the overlay until the game is over. Data is fetched in the background but stays hidden, so you can play without bias and review afterward.
📊 Embedded Only - Turn off auto-show overlay and enable embedded stats and/or embedded risk score for a minimal, overlay-free experience with stats right next to usernames.
📐 Three sizes - Small, Normal or Large overlay.
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MY STATS
Open the extension and tap the chart icon. Pick Chess.com or Lichess, type any username, choose a range (from the last 50 games to the last year) and press Search.
💡 Insights - The findings that matter, each compared with a benchmark (typical players at your rating, your opponents, or your own other games). Normal results are folded into one "Not holding you back" line.
📅 Form - Score, rating change and recent results.
♞ Skills - Stockfish checks each game in your browser. Opening, tactics, endgames, saving lost positions, converting wins and clock use, each against typical players at your rating. The analysis keeps going when the popup is closed.
🚫 Cheaters - How many of your opponents had their accounts closed for fair play, and what those games cost you.
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EMBEDDED STATS & RISK SCORE
📌 Embedded Stats - Shows rated W/L/D records next to player usernames on both sides of the board, for the time window you choose. Auto-filters by the current game format (playing blitz = blitz stats only). When the format can't be detected, it uses the format the player has played most in that window.
📌 Embedded Risk Score - Shows the risk score circle next to opponent and self usernames. Works alongside any mode.
⚙ Embedded Settings (cog icon) - Customize your embedded experience:
- Time interval: 1 hour, 6 hours, 12 hours, 24 hours, 3 days, or 1 week
- Hide own stats: only show the opponent's stats
- Color highlighting: toggle green/red/grey W/L/D numbers on or off
Changes apply straight away, with no need to wait for the next game.
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FEATURES
✅ Works on Chess.com AND Lichess - overlay and embedded features on both platforms
✅ Works in live games, while spectating, and in game analysis/review
✅ Auto-detects the players when a game starts
✅ At-a-glance risk chips for the top risk drivers (toggle on/off)
✅ Draggable overlay - position it wherever you like
✅ Toggle between opponent and your own stats
✅ Format-specific scoring and embedded stats (bullet, blitz, rapid, daily)
✅ Per-format insights table with W/L/D, accuracy, ratings, and 7-day trends
✅ Embedded W/L/D stats and risk-score circles next to usernames
✅ Configurable time interval, color highlighting, and hide-own-stats for embeds
✅ Semi-Zen and Full Zen modes for distraction-free play
✅ Embedded-only mode - disable over…
Growth
Window
Users
Change
Ratings
Rating
7 days
+38
+9.0%
0
0.00
30 days
+108
+30.8%
0
0.00
6 months
+261
+131.8%
+3
0.00
Chrome Web Store search rankings
Where Chess Risk Score appears when people search the store, with the 30 day change