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Lu Dan
Lu Dan
LuDan121
Beijing Chaoyang TT Club πŸ“ θ₯ΏεŸŽεŒΊ πŸ‡¨πŸ‡³ CN
1404
Rating iBayesian conservative rating = ΞΌ βˆ’ 2Οƒ. The system is 95% confident this player's skill is at least this value. More matches lower Οƒ and raise this number.
1527
ΞΌ (mean) iΞΌ (Mu) is the best estimate of this player's skill level. Wins raise it, losses lower it. Beating a stronger player earns more than beating a weaker one.
61.6
σ (uncertainty) iσ (Sigma) = how confident the system is in the rating. Lower is better. New players start at σ=200 — it falls with every match played.
56%
Win Rate iWins Γ· (wins + losses). Requires at least 1 match.
5
Wins
4
Losses
Skill Confidence Intervals iBased on ΞΌ and Οƒ, the system estimates this player's skill range at different confidence levels. The smaller Οƒ is, the narrower the band.
68%  (1Οƒ)1465 β€” 1589
95%  (2Οƒ)1404 β€” 1650
99.7% (3Οƒ)1342 β€” 1712
Trust Level iHow reliably this player submits match results. Formula: rejections per 10 submissions. Fewer rejections = higher trust. No data
No submissions yet

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Recent Matches

Date Player A Player B Δμ iChange in ΞΌ after this match. Positive = won. The size depends on the skill gap between both players and their Οƒ values.
5/19/2026 JiaYue119 πŸ† LuDan121 +11.0
4/25/2026 πŸ† HeBo118 LuDan121 -12.0
4/14/2026 QiLong120 πŸ† LuDan121 +10.0
4/14/2026 πŸ† LuDan121 ShaoYong122 -3.0
4/11/2026 LuDan121 πŸ† YuHui124 -6.0
4/11/2026 πŸ† WeiJie116 LuDan121 -38.0
3/14/2026 LuDan121 πŸ† ZhangMin63 -40.0
2/24/2026 πŸ† LuDan121 HuLan75 β€”
12/26/2025 πŸ† LuDan121 XieTing123 +105.0