Xu Bo
XuBo31
Beijing Xicheng TT Club
π θ₯ΏεεΊ
π¨π³ CN
1426
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.
1529
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.
51.5
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.
55%
Win Rate
Wins Γ· (wins + losses). Requires at least 1 match.
6
Wins
5
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)1478 β 1581
95% (2Ο)1426 β 1632
99.7% (3Ο)1375 β 1684
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. | ||
|---|---|---|---|---|---|
| 5/13/2026 |  |
π LuoHui39 | |
XuBo31 | β |
| 4/30/2026 |  |
SongQiang40 | |
π XuBo31 | β |
| 4/13/2026 | |
XuBo31 |  |
π HuZhi35 | -15.0 |
| 3/29/2026 | |
XuBo31 |  |
π MaDong33 | -12.0 |
| 3/21/2026 |  |
FuXin109 | |
π XuBo31 | +5.0 |
| 3/19/2026 | |
π XuBo31 |  |
ZhouLing89 | +3.0 |
| 3/16/2026 | |
XuBo31 |  |
π ZhuKai34 | -22.0 |
| 2/16/2026 | |
π XuBo31 |  |
SunFei32 | +27.0 |
| 1/11/2026 | |
π XuBo31 |  |
LiuJing64 | +38.0 |
| 12/18/2025 |  |
GaoYong38 | |
π XuBo31 | +49.0 |