PLAYER PAGE
Jiajia Weng
2140315707Buffalo City (EBC)Personal
Main rating
| Rating | 1419.3 |
| K-factor | 32 |
| Floor | 949.6 |
| Highest | 1507.3 (2025-11-01) |
| Min/Max +/- allowed | 107 |
| Rating Change () | |
| Games | 4 |
| Score | 3 |
| We | 2.23 |
| SWe | 0.64 |
| Temp +/- | 20.3 |
| Penalties | 0 |
| Weight perform | 1430.1 |
| Final +/- | 20.3 |
| New Rating () | |
| Rating | 1439.6 |
| K-factor | 32 |
| Floor | 949.6 |
| Highest | 1507.3 (2025-11-01) |
| Min/Max +/- allowed | 107 |
Standard rating
| Rating | 1412.8 |
| K-factor | 32 |
| Floor | 952.8 |
| Highest | 1516.3 (2025-11-01) |
| Min/Max +/- allowed | 105.7 |
| Rating Change () | |
| Games | 4 |
| Score | 3 |
| We | 2.23 |
| SWe | 0.77 |
| Temp +/- | 24.7 |
| Penalties | 0 |
| Weight perform | 1414.3 |
| Final +/- | 24.7 |
| New Rating () | |
| Rating | 1437.5 |
| K-factor | 32 |
| Floor | 952.8 |
| Highest | 1516.3 (2025-11-01) |
| Min/Max +/- allowed | 105.7 |
Rapid rating
| Rating | 1328.4 |
| K-factor | 36 |
| Floor | 828.4 |
| Highest | 1328.4 (2025-11-01) |
| Min/Max +/- allowed | 138.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1328.4 |
| K-factor | 36 |
| Floor | 828.4 |
| Highest | 1328.4 (2025-11-01) |
| Min/Max +/- allowed | 138.1 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2025-03-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2025-03-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Buffalo City Chess Trials 2 (U14 Girls) | Standard | 2026-02-28 | 2026-02-28 | Buffalo City | 5 | 1419.3 | 4 | 3 | 1581.3 | 20.3 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Buffalo City Chess Trials 1 (U14) | Standard | 2026-02-07 | 2026-02-07 | Buffalo City (EBC) | 5 | 1459.2 | 5 | 3 | 1312.1 | 0 | Details |
| 2 | Chess Vikings Trials 2 2025 (C) | Standard | 2025-10-18 | 2025-10-18 | Buffalo City (EBC) | 5 | 1492.6 | 5 | 3.5 | 1565.7 | 0 | Details |
| 3 | BC Open 2025 (U10-U14) | Rapid | 2025-10-04 | 2025-10-04 | Buffalo City (EBC) | 7 | 1492.6 | 7 | 5 | 1527 | 0 | Details |
| 4 | Buffalo City Chess Clubs League 2025 (B) | Standard | 2025-09-20 | 2025-09-20 | Buffalo City (EBC) | 6 | 1454 | 4 | 1 | 1100 | 0 | Details |
| 5 | EC Closed 2025 (U12 Girls) | Standard | 2025-09-06 | 2025-09-07 | Nelson Mandela Bay (ENM) | 6 | 1454 | 6 | 4.5 | 1570.6 | 0 | Details |
| 6 | Buffalo City Chess Junior Closed 2025 (U12 Girls) | Standard | 2025-08-16 | 2025-08-16 | Buffalo City (EBC) | 5 | 1416.7 | 5 | 4 | 1638 | 0 | Details |
| 7 | 3rd Chess Vikings Open Championship 2025 (C) | Standard | 2025-08-02 | 2025-08-02 | Buffalo City (EBC) | 6 | 1416.7 | 6 | 3 | 1298.8 | 0 | Details |
| 8 | BC Schools Chess Festival 2025 (U11 Girls) | Standard | 2025-07-26 | 2025-07-26 | Buffalo City (EBC) | 5 | 1416.7 | 5 | 4 | 1544.2 | 0 | Details |
| 9 | Beacon Bay Winter Cup 2025 (B) | Rapid | 2025-07-09 | 2025-07-09 | Buffalo City (EBC) | 6 | 1414.9 | 6 | 4 | 1428 | 0 | Details |
| 10 | 2nd Vikings Classical 2025 (C) | Standard | 2025-05-24 | 2025-05-24 | Buffalo City (EBC) | 5 | 1431.1 | 5 | 3 | 1332.7 | 0 | Details |
| 11 | 2025 Buffalo City Chess Trials 3 (U12) | Standard | 2025-05-10 | 2025-05-10 | Buffalo City (EBC) | 5 | 1358.2 | 5 | 4 | 1645.3 | 0 | Details |
| 12 | EC Open 2025 (U8-U14 Girls) | Standard | 2025-05-02 | 2025-05-02 | Buffalo City (EBC) | 7 | 1358.2 | 7 | 3.5 | 1288.2 | 0 | Details |
| 13 | Vikings Holiday 2025 (C) | Standard | 2025-04-05 | 2025-04-05 | Buffalo City (EBC) | 5 | 1270.2 | 4 | 3.5 | 1477.6 | 0 | Details |
| 14 | 2025 Buffalo City Chess Trials 2 (U12) | Standard | 2025-04-12 | 2025-04-12 | Buffalo City (EBC) | 5 | 1270.2 | 5 | 3 | 1353.3 | 0 | Details |
| 15 | 2025 Buffalo City Chess Trials 1 (U12) | Standard | 2025-03-22 | 2025-03-22 | Buffalo City (EBC) | 5 | 1270.2 | 5 | 3 | 1346.1 | 0 | Details |
| 16 | Vikings Classical March 2025 (U12) | Standard | 2025-03-15 | 2025-03-15 | Buffalo City (EBC) | 5 | 1255.1 | 5 | 3 | 1333.9 | 0 | Details |
| 17 | Hudson League 1 2025 | Standard | 2025-02-10 | 2025-02-13 | Buffalo City (EBC) | 6 | 1200 | 6 | 3 | 1267.4 | 0 | Details |
| 18 | Rapid Feb 2nd Leg 2025 (U12) | Rapid | 2025-02-22 | 2025-02-22 | Buffalo City (EBC) | 7 | 1200 | 7 | 4 | 1307 | 0 | Details |
| 19 | Rapid Feb Leg 1 2025 (U12) | Rapid | 2025-02-15 | 2025-02-15 | Buffalo City (EBC) | 7 | 1200 | 7 | 4 | 1302.3 | 0 | Details |
| 20 | Hudson League 1 2023 | Standard | 2025-02-10 | 2025-02-13 | Buffalo City (EBC) | 6 | 1200 | 6 | 3 | 1267.4 | 0 | Details |
Game statistics ( )
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
Game statistics ()
| Games | 9 |
| Wins | 6 |
| Draws | 0 |
| Losses | 3 |
| White | 5 |
| Black | 4 |
| White wins | 3 |
| Black wins | 3 |
| Score | 6 |
| Percent | 66.7 |
| Dp | 141.7 |
| AOR | 1290.1 |
| Performance | 1431.7 |
Game statistics (History)
| Games | 115 |
| Wins | 69 |
| Draws | 6 |
| Losses | 40 |
| White | 57 |
| Black | 58 |
| White wins | 31 |
| Black wins | 38 |
| Score | 72 |
| Percent | 62.6 |
| Dp | 107.2 |
| AOR | 1292.5 |
| Performance | 1399.6 |
Rankings (Main)
| National | |
| Overall | 2933 |
| Gender | 432 |
| Age group | 310 |
| Gender/Age | 87 |
| Provincial | |
| Overall | 326 |
| Gender | 46 |
| Age group | 45 |
| Gender/Age | 17 |
| Regional | |
| Overall | 107 |
| Gender | 18 |
| Age group | 13 |
| Gender/Age | 5 |
Rankings (Standard)
| National | |
| Overall | 2762 |
| Gender | 422 |
| Age group | 292 |
| Gender/Age | 85 |
| Provincial | |
| Overall | 309 |
| Gender | 44 |
| Age group | 43 |
| Gender/Age | 15 |
| Regional | |
| Overall | 104 |
| Gender | 18 |
| Age group | 12 |
| Gender/Age | 5 |
Rankings (Rapid)
| National | |
| Overall | 1515 |
| Gender | 244 |
| Age group | 255 |
| Gender/Age | 64 |
| Provincial | |
| Overall | 138 |
| Gender | 17 |
| Age group | 18 |
| Gender/Age | 5 |
| Regional | |
| Overall | 35 |
| Gender | 6 |
| Age group | 5 |
| Gender/Age | 1 |
Rankings (Blitz)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 9 |
| Score | 6 |
| Percent | 66.7 |
| Aor | 1290.1 |
| Dp | 141.7 |
| Prat | 1431.7 |
Performance (12 months)
| Games | 89 |
| Score | 58 |
| Percent | 65.2 |
| Aor | 1303.5 |
| Dp | 128.9 |
| Prat | 1432.4 |
Performance (History)
| Games | 115 |
| Score | 72 |
| Percent | 62.6 |
| Aor | 1292.5 |
| Dp | 107.2 |
| Prat | 1399.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Lin, Y (Yihang) | 4 | 3 | 1 | Hudson League 1 2023 | 3rd Chess Vikings Open Championship 2025 (C) | Details |
| Overall | 2 | Balura, T (Tumi) | 3 | 2 | 1 | BC Schools Chess Festival 2025 (U11 Girls) | EC Closed 2025 (U12 Girls) | Details |
| Overall | 3 | Kuo, C (Chih-Hsun) | 3 | 3 | 0 | Rapid Feb Leg 1 2025 (U12) | Vikings Holiday 2025 (C) | Details |
| Overall | 4 | Christensen, M (Mia) | 3 | 1 | 2 | EC Open 2025 (U8-U14 Girls) | 2026 Buffalo City Chess Trials 2 (U14 Girls) | Details |
| Overall | 5 | Tayi, M (Milani) | 3 | 0 | 3 | Rapid Feb 2nd Leg 2025 (U12) | 2026 Buffalo City Chess Trials 1 (U14) | Details |
| Standard | 1 | Balura, T (Tumi) | 3 | 2 | 1 | BC Schools Chess Festival 2025 (U11 Girls) | EC Closed 2025 (U12 Girls) | Details |
| Standard | 2 | Lin, Y (Yihang) | 3 | 2 | 1 | Hudson League 1 2023 | 3rd Chess Vikings Open Championship 2025 (C) | Details |
| Standard | 3 | Christensen, M (Mia) | 3 | 1 | 2 | EC Open 2025 (U8-U14 Girls) | 2026 Buffalo City Chess Trials 2 (U14 Girls) | Details |
| Standard | 4 | Maciki, I (Ibenathi) | 3 | 1 | 2 | Vikings Classical March 2025 (U12) | EC Closed 2025 (U12 Girls) | Details |
| Standard | 5 | Tumbare, N (Nicole) | 3 | 2 | 1 | 2025 Buffalo City Chess Trials 3 (U12) | EC Closed 2025 (U12 Girls) | Details |
| Rapid | 1 | Lin, Y (Yifan) | 2 | 1 | 1 | Rapid Feb Leg 1 2025 (U12) | Rapid Feb 2nd Leg 2025 (U12) | Details |
| Rapid | 2 | Tayi, M (Milani) | 2 | 0 | 2 | Rapid Feb 2nd Leg 2025 (U12) | Beacon Bay Winter Cup 2025 (B) | Details |
| Rapid | 3 | Matabata, O (Othawe) | 2 | 0 | 2 | Rapid Feb Leg 1 2025 (U12) | Rapid Feb 2nd Leg 2025 (U12) | Details |