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Song Qiang
Song Qiang
SongQiang40
Beijing Xicheng TT Club πŸ“ ζ΅·ζ·€εŒΊ πŸ‡¨πŸ‡³ CN
1280
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.
1458
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.
88.9
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)1369 β€” 1547
95%  (2Οƒ)1280 β€” 1636
99.7% (3Οƒ)1191 β€” 1725
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.
5/24/2026 πŸ† SongQiang40 ZhuKai34 +11.0
5/16/2026 πŸ† LuoHui39 SongQiang40 +5.0
5/13/2026 GaoYong38 πŸ† SongQiang40 +17.0
4/30/2026 SongQiang40 πŸ† XuBo31 β€”
3/12/2026 SongQiang40 πŸ† MaDong33 +2.0
2/3/2026 πŸ† LinLong37 SongQiang40 -6.0
12/31/2025 GuoRui36 πŸ† SongQiang40 +31.0
12/28/2025 SongQiang40 πŸ† SunFei32 -73.0