PLAYER PAGE
Personal
Chiang, CJ (Chia-Yi Joy)
Chess SA id
2090105666FIDE id
?Date of birth
2009-05-01 (U18)Gender
FemaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-05-10Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1302.1 | 1321.2 | 1200 | 1200 |
| Raw rating | 1302.1 | 1321.2 | 1200 | 1200 |
| Weighted rating | 1288.9 | 1307.9 | 1200 | 1200 |
| Weighted performance | 1150.4 | 1151.5 | 0 | 0 |
| Floor | 802.1 | 821.2 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 143.4 | 139.5 | 165.8 | 165.8 |
| Highest rating | 1302.12025-06-01 | 1321.22025-06-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 1302.12025-06-01 | 1321.22025-06-01 | 12002024-03-01 | 12002024-03-01 |
| Highest weighted rating | 1282.42025-08-01 | 1300.62025-08-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 1301.22024-05-01 | 1301.92024-05-01 | 12002024-03-01 | 12002024-03-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1302.1 | 1321.2 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1302.1 | 1321.2 | 1200 | 1200 |
| Raw rating | 1302.1 | 1321.2 | 1200 | 1200 |
| Weighted rating | 1288.9 | 1307.9 | 1200 | |
| Weighted performance | 1150.4 | 1151.5 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 802.1 | 821.2 | 700 | 700 |
| Max/Min rating change allowed | 143.4 | 139.5 | 165.8 | 165.8 |
| Games | 0 | 0 | 0 | 0 |
| Score | 0 | 0 | 0 | 0 |
| Expected score | 0 | 0 | 0 | 0 |
| Score-Expected | 0 | 0 | 0 | 0 |
| Temp raw +/- | 0 | 0 | 0 | 0 |
| Final raw +/- | 0 | 0 | 0 | 0 |
| New raw rating | 1302.1 | 1321.2 | 1200 | 1200 |
| New weighted rating | 1291.6 | 1310.9 | 1200 | 1200 |
| New weighted performance | 1149.9 | 1151 | 0 | 0 |
| Temp new rating | 1302.1 | 1321.2 | 1200 | 1200 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1302.1 | 1321.2 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 802.1 | 821.2 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| 10 | 10 | 0 | 0 | |
| 14 | 14 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 53 | 53 | 0 | 0 |
| Games since | |||||||||||||||||
| Main15 | Standard15 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Female | ||||||||||||||||
| Age group | U18 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Female | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Female | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Female | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Female | -1 | -1 | -1 | ||||||||||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 5 | 3 | 60 | 85 | 1252.4 | 1337.4 |
| Standard | 5 | 3 | 60 | 85 | 1252.4 | 1337.4 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 53 | 28.5 | 53.77 | 32.1 | 1219.5 | 1251.6 |
| Standard | 53 | 28.5 | 53.77 | 32.1 | 1219.5 | 1251.6 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-09-30 | 1302.1 | 1321.2 | 1200 | 1200 |
| 2025-09-01 | 1302.1 | 1321.2 | 1200 | 1200 |
| 2025-08-01 | 1302.1 | 1321.2 | 1200 | 1200 |
| 2025-07-01 | 1302.1 | 1321.2 | 1200 | 1200 |
| 2025-06-01 | 1302.1 | 1321.2 | 1200 | 1200 |
| 2025-05-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2025-04-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2025-03-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2025-02-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2025-01-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-12-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-11-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-10-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-09-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-08-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-07-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-06-01 | 1296 | 1318.1 | 1200 | 1200 |
| 2024-08-01 | 1195.9 | 1196.8 | 1200 | 1200 |
| 2024-04-01 | 1195.9 | 1196.8 | 1200 | 1200 |
| 2024-03-01 | 1195.9 | 1196.8 | 1200 | 1200 |
| 2024-02-01 | 1195.9 | 1196.8 | 1200 | 1200 |
| 2024-01-01 | 1195.9 | 1196.8 | 1200 | 1200 |
| 2023-12-01 | 1195.9 | 1196.8 | 1200 | 1200 |
| 2023-11-01 | 1195.9 | 1196.8 | 1200 | 1200 |
Comming soon.
Tournaments
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U18 Girls) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U18 Girls) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 2 | 2024 Tshwane North School District CLOSED Individual Champioships (U15 Girls) | 2024-05-11 | 2024-05-11 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 3 | District 3 Cluster 4 and 5 Individuals 2024 (U15 Girls) | 2024-05-04 | 2024-05-04 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 4 | 2023 Tshwane North School District CLOSED League Championships (D3) | 2023-08-12 | 2023-08-12 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
| 5 | 2023 Tshwane North School District CLOSED Individual Championships (D3) | 2023-05-13 | 2023-05-13 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 6 | Gauteng Schools Individual Finals 2023 (U15 Girls) | 2023-05-27 | 2023-05-27 | Standard | Ekurhuleni (GE) | 5 | 5 | 2 | Yes | Analysis |
| 7 | 2019 D3 Team League (U11) | 2019-07-20 | 2019-07-20 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 8 | D3 Primary School League Cluster 4 2019 (U11) | 2019-05-11 | 2019-05-11 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 9 | 2019 Gauteng Primary Schools Individual Chess Championships (U11 Girls) | 2019-05-25 | 2019-05-25 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
| 10 | 2019 D3 Individuals (U11 Girls) | 2019-04-13 | 2019-04-13 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
| 11 | 2018 Gauteng League Final (U9) | 2018-08-24 | 2018-08-24 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | Tournament2024 Tshwane North School District CLOSED Individual Champioships | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDe Lange, Z (Zoè) | OpponentGwenzi, A (Ashley) | ||||||||
| 2 | 5 | Tournament2023 Tshwane North School District CLOSED Individual Championships | TournamentGauteng Schools Individual Finals 2023 | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-27 | rnd1 | typeStandard | result1 | ||
| OpponentSithole, K (Kagiso) | OpponentMatunywa, Z (Zandile) | ||||||||
| 3 | 4 | Tournament2019 D3 Individuals | TournamentD3 Primary School League Cluster 4 2019 | ||||||
| date2019-04-13 | rnd4 | typeStandard | result1 | date2019-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentMabasa, K (Kelebogile) | OpponentBrand, A (Annemie) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | Tournament2024 Tshwane North School District CLOSED Individual Champioships | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDe Lange, Z (Zoè) | OpponentGwenzi, A (Ashley) | ||||||||
| 2 | 5 | Tournament2023 Tshwane North School District CLOSED Individual Championships | TournamentGauteng Schools Individual Finals 2023 | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-27 | rnd1 | typeStandard | result1 | ||
| OpponentSithole, K (Kagiso) | OpponentMatunywa, Z (Zandile) | ||||||||
| 3 | 4 | Tournament2019 D3 Individuals | TournamentD3 Primary School League Cluster 4 2019 | ||||||
| date2019-04-13 | rnd4 | typeStandard | result1 | date2019-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentMabasa, K (Kelebogile) | OpponentBrand, A (Annemie) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | Tournament2024 Tshwane North School District CLOSED Individual Champioships | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDe Lange, Z (Zoè) | OpponentGwenzi, A (Ashley) | ||||||||
| 2 | 5 | Tournament2023 Tshwane North School District CLOSED Individual Championships | TournamentGauteng Schools Individual Finals 2023 | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-27 | rnd1 | typeStandard | result1 | ||
| OpponentSithole, K (Kagiso) | OpponentMatunywa, Z (Zandile) | ||||||||
| 3 | 4 | Tournament2019 D3 Individuals | TournamentD3 Primary School League Cluster 4 2019 | ||||||
| date2019-04-13 | rnd4 | typeStandard | result1 | date2019-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentMabasa, K (Kelebogile) | OpponentBrand, A (Annemie) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | Tournament2024 Tshwane North School District CLOSED Individual Champioships | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDe Lange, Z (Zoè) | OpponentGwenzi, A (Ashley) | ||||||||
| 2 | 5 | Tournament2023 Tshwane North School District CLOSED Individual Championships | TournamentGauteng Schools Individual Finals 2023 | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-27 | rnd1 | typeStandard | result1 | ||
| OpponentSithole, K (Kagiso) | OpponentMatunywa, Z (Zandile) | ||||||||
| 3 | 4 | Tournament2019 D3 Individuals | TournamentD3 Primary School League Cluster 4 2019 | ||||||
| date2019-04-13 | rnd4 | typeStandard | result1 | date2019-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentMabasa, K (Kelebogile) | OpponentBrand, A (Annemie) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
Top 10 opponents most often played
| # | Opponent | Main | Standard | Rapid | Blitz | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
| Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
| 1 | Raubenheimer ,C (Charne) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1255.6 | 1255.6 | 1263.4 | 1255.6 | 0 | 0 | 0 | 0 | ||||||
| 2 | Lekgetho ,O (Onalerona) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 3 | Mabasa ,K (Kelebogile) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 4 | Van Der Berg ,M (Mia) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 5 | De Bruin ,M (Morne) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 6 | Mashankane ,K (Kelebogile) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 7 | Huruva ,T (Thabiso) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 8 | Malan ,H (Henco) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1274.4 | 849.4 | 1273.3 | 849.4 | 0 | 0 | 0 | 0 | ||||||
| 9 | Helder ,L (Lynette) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 10 | Jansen ,S (Seante) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|