Wu Yan
WuYan290
Beijing Haidian TT Club
π ζ΅·ζ·εΊ
π¨π³ CN
1547
Rating
Bayesian conservative rating = ΞΌ β 2Ο. The system is 95% confident this player's skill is at least this value. More matches lower Ο and raise this number.
1614
ΞΌ (mean)
ΞΌ (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.
33.6
Ο (uncertainty)
Ο (Sigma) = how confident the system is in the rating. Lower is better. New players start at Ο=200 β it falls with every match played.
69%
Win Rate
Wins Γ· (wins + losses). Requires at least 1 match.
9
Wins
4
Losses
Skill Confidence Intervals
Based on ΞΌ and Ο, the system estimates this player's skill range at different confidence levels. The smaller Ο is, the narrower the band.
68% (1Ο)1580 β 1648
95% (2Ο)1547 β 1681
99.7% (3Ο)1513 β 1715
Trust Level
How reliably this player submits match results. Formula: rejections per 10 submissions. Fewer rejections = higher trust.
No data
No submissions yet
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Login / RegisterRecent Matches
| Date | Player A | Player B | ΞΞΌ Change in ΞΌ after this match. Positive = won. The size depends on the skill gap between both players and their Ο values. | ||
|---|---|---|---|---|---|
| 5/30/2026 | π SunFei52 | WuYan290 | +88.0 | ||
| 5/30/2026 | WuYan290 | π NieXue127 | -8.0 | ||
| 5/30/2026 | WuYan290 | π SunXin92 | -10.0 | ||
| 5/30/2026 | π WuYan290 | LuoTing99 | +6.0 | ||
| 5/25/2026 | π WuYan290 | LiNa82 | +4.0 | ||
| 4/30/2026 | ZhaoJuan87 | π WuYan290 | +6.0 | ||
| 4/6/2026 | π WuYan290 | WangFang81 | +3.0 | ||
| 3/23/2026 | HuangXia88 | π WuYan290 | +7.0 | ||
| 2/11/2026 | YangYan86 | π WuYan290 | +12.0 | ||
| 1/31/2026 | WuYan290 | π ZhangMin83 | -50.0 |