France Open 2026 - Puzzle R1 (13thth - 17thth June) Discuss
France Open 2026 - Puzzle R2 (13thth - 17thth June) Discuss
France Open 2026 - Sudoku R1 (13thth - 17thth June) starts in 45 hours 5 minutes Discuss
World Sudoku & Puzzle Championship 2026

Jiacheng Song

Send this user a private message
Real name Jiacheng Song
Puzzle Blog
Country China
Date registered2026-02-28 3:00 AM
Last logon2026-02-28 4:32 AM
Total posts
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Sudoku Ratings 287 446.7832 287 446.7832 History

Sudoku Testjcsong's Rankjcsong's ScoreTest Max ScorePSRSNSW
2026R2 (Math & Outside) 75 86.5 141.283 727 835 754 1

PS = Prorated Score (Score based on players's score, median score and top score in the test)
RS = Rank Score (Score based on player's rank in the test)
NS = Normalized Score (.75 * PS + .25 * RS)
W = Weight of the test
Click here for detailed logic of LMI Player Rating System v2.0