Chess Risk Score

Opponent risk overlay for Chess.com & Lichess. Win rates, accuracy analysis, account age — all from public data.

♟ CHESS RISK SCORE — Know who you're playing. Tired of suspicious opponents? Chess Risk Score gives you an instant risk assessment of any opponent on Chess.com and Lichess, right inside the game page. ━━━━━━━━━━━━━━━━━━━━━━━━ HOW IT WORKS When you start or spectate a game, Chess Risk Score automatically: • Detects your opponent • Fetches their public stats from the Chess.com or Lichess API • Calculates a composite risk score from 0–100 • Displays everything in a clean, draggable overlay ━━━━━━━━━━━━━━━━━━━━━━━━ WHAT'S MEASURED 📊 Overall Win Rate — All-time win percentage. Win rates above 60% begin contributing to risk. 📈 Recent Win Rate — Last 2 months only. Catches players who recently started using assistance. 🎯 Accuracy Analysis — Research-calibrated accuracy thresholds per rating band and time format. Flags players consistently performing above expected accuracy for their rating level. ⏰ Account Age Factor — New accounts (under 90 days) get a risk multiplier. Brand new accounts (under 7 days) score up to 5× higher. ━━━━━━━━━━━━━━━━━━━━━━━━ FEATURES ✅ Works on Chess.com AND Lichess ✅ Auto-detects opponent when a game starts ✅ Draggable overlay — position it wherever you like ✅ Toggle between opponent and your own stats ✅ Format-specific scoring (bullet, blitz, rapid) ✅ Per-format insights table with W/L/D, accuracy, ratings, and 7-day trends ✅ "How risk is calculated" transparency panel ✅ Dark and light theme support ✅ Keyboard shortcut (Alt+C) to manually trigger ✅ All analysis happens locally — zero data collection ━━━━━━━━━━━━━━━━━━━━━━━━ RISK LEVELS 🟢 0–25: Low Risk — Normal player patterns 🟡 26–50: Moderate Risk — Some elevated signals 🟠 51–75: High Risk — Multiple concerning indicators 🔴 76–100: Extreme Risk — Strongly unusual patterns ━━━━━━━━━━━━━━━━━━━━━━━━ IMPORTANT DISCLAIMER This extension provides risk indicators, not proof of cheating. A high risk score suggests unusual patterns worth attention — players deserve the benefit of the doubt. Use this tool responsibly and report suspected cheaters through official Chess.com or Lichess channels. ━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY No data collection. No tracking. No analytics. All analysis happens in your browser using only publicly available API data. Open source — audit the code yourself. ━━━━━━━━━━━━━━━━━━━━━━━━ Created by az_93