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Bi Yan
Bi Yan
BiYan125
Beijing Chaoyang TT Club πŸ“ ζ΅·ζ·€εŒΊ πŸ‡¨πŸ‡³ CN
1206
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.
1473
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.
133.6
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.
38%
Win Rate iWins Γ· (wins + losses). Requires at least 1 match.
3
Wins
5
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)1339 β€” 1607
95%  (2Οƒ)1206 β€” 1740
99.7% (3Οƒ)1072 β€” 1874
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.
5/20/2026 πŸ† BiYan125 HuLan75 +13.0
5/14/2026 πŸ† XieTing123 BiYan125 +6.0
5/14/2026 BiYan125 πŸ† ZhaiWei128 -2.0
5/2/2026 πŸ† BiYan125 MoQiang126 +17.0
4/11/2026 ShaoYong122 πŸ† BiYan125 +17.0
4/8/2026 BiYan125 πŸ† ChenMing5 +14.0
2/11/2026 BiYan125 πŸ† NieXue127 -28.0
1/18/2026 πŸ† YuHui124 BiYan125 -27.0