PLAYER PAGE
Personal
Nguba, O (Olivier)
Chess SA id
1090155613FIDE id
?Date of birth
2009-06-09 (U18)Gender
MaleRegion
Johannesburg Metro (GJM)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-08-30Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1183.4 | 1193.2 | 1184.4 | 1200 |
| Raw rating | 1147.6 | 1148.5 | 1184.4 | 1200 |
| Weighted rating | 1183.4 | 1193.2 | 1184.3 | 1200 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 700 | 700 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 178.7 | 178.4 | 169.6 | 165.8 |
| Highest rating | 12002018-10-01 | 12002018-10-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 12002019-12-01 | 12002024-02-01 | 12002019-12-01 | 12002024-02-01 |
| Highest weighted rating | 12002018-10-01 | 12002018-10-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 12002019-12-01 | 12002024-02-01 | 12002019-12-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -3.1 | -3.8 | 0 | 0 |
| New rating | 1180.4 | 1189.4 | 1184.4 | 1200 |
| Analysis | ||||
| Rating | 1183.4 | 1193.2 | 1184.4 | 1200 |
| Raw rating | 1147.6 | 1148.5 | 1184.4 | 1200 |
| Weighted rating | 1183.4 | 1193.2 | 1184.3 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 700 | 700 | 700 | 700 |
| Max/Min rating change allowed | 178.7 | 178.4 | 169.6 | 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 | 1147.6 | 1148.5 | 1184.4 | 1200 |
| New weighted rating | 1180.4 | 1189.4 | 1184.3 | 1200 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1180.4 | 1189.4 | 1184.4 | 1200 |
| Temp new rating +/- | -3.1 | -3.8 | 0 | 0 |
| Final new rating +/- | -3.1 | -3.8 | 0 | 0 |
| New rating | 1180.4 | 1189.4 | 1184.4 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 700 | 700 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 7 | 7 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 5 | 0 | 5 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 12 | 7 | 5 | 0 |
| Games since | |||||||||||||||||
| Main7 | Standard7 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U18 | ||||||||||||||||
| Region | Johannesburg Metro (GJM) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U18 | -1 | -1 | -1 | ||||||||||||||
| U18 Male | -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 | 7 | 1.5 | 21.43 | -242.9 | 1268.6 | 1025.7 |
| Standard | 7 | 1.5 | 21.43 | -242.9 | 1268.6 | 1025.7 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 12 | 3.5 | 29.17 | -177.1 | 1241.3 | 1064.2 |
| Standard | 7 | 1.5 | 21.43 | -242.9 | 1268.6 | 1025.7 |
| Rapid | 5 | 2 | 40 | -85 | 1203.1 | 1118.1 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1147.6 | 1148.5 | 1184.4 | 1200 |
| 2025-09-30 | 1174.7 | 1182 | 1184.4 | 1200 |
| 2025-09-01 | 1174.7 | 1182 | 1184.4 | 1200 |
| 2025-08-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-07-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-06-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-05-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-04-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-03-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-02-01 | 1188.9 | 1200 | 1184.4 | 1200 |
| 2025-01-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-12-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-11-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-10-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-09-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-08-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-07-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-09-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-05-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-04-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-03-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-02-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2024-01-01 | 1188.8 | 1200 | 1184.2 | 1200 |
| 2023-12-01 | 1188.8 | 1200 | 1184.2 | 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 Gauteng Top Schools Teams (U19) | 2025-08-30 | 2025-08-30 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 2 | D5 Teams 2025 (U19 Open) | 2025-08-16 | 2025-08-16 | Standard | Ekurhuleni (GE) | 3 | 2 | 0.5 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Gauteng Top Schools Teams (U19) | 2025-08-30 | 2025-08-30 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 2 | D5 Teams 2025 (U19 Open) | 2025-08-16 | 2025-08-16 | Standard | Ekurhuleni (GE) | 3 | 2 | 0.5 | Yes | Analysis |
| 3 | Gauteng Open Arnold Classic 2023 (U16) | 2023-05-19 | 2023-05-19 | Rapid | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Tournament2025 Gauteng Top Schools Teams | Tournament2025 Gauteng Top Schools Teams | ||||||
| date2025-08-30 | rnd5 | typeStandard | result1 | date2025-08-30 | rnd5 | typeStandard | result1 | ||
| OpponentDadi, J (Joshua) | OpponentDadi, J (Joshua) | ||||||||
| 2 | 1 | TournamentD5 Teams 2025 | TournamentD5 Teams 2025 | ||||||
| date2025-08-16 | rnd2 | typeStandard | result0.5 | date2025-08-16 | rnd2 | typeStandard | result0.5 | ||
| OpponentMsibiringi, U (Unarine) | OpponentMsibiringi, U (Unarine) | ||||||||
| 3 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd3 | typeRapid | result1 | date2023-05-19 | rnd3 | typeRapid | result1 | ||
| OpponentMarallich, E (Eli) | OpponentMarallich, E (Eli) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | TournamentD5 Teams 2025 | TournamentD5 Teams 2025 | ||||||
| date2025-08-16 | rnd2 | typeStandard | result0.5 | date2025-08-16 | rnd2 | typeStandard | result0.5 | ||
| OpponentMsibiringi, U (Unarine) | OpponentMsibiringi, U (Unarine) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd3 | typeRapid | result1 | date2023-05-19 | rnd3 | typeRapid | result1 | ||
| OpponentMarallich, E (Eli) | OpponentMarallich, E (Eli) | ||||||||
| 2 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd1 | typeRapid | result1 | date2023-05-19 | rnd1 | typeRapid | result1 | ||
| OpponentSmith, H (Henre) | OpponentSmith, H (Henre) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd3 | typeRapid | result1 | date2023-05-19 | rnd3 | typeRapid | result1 | ||
| OpponentMarallich, E (Eli) | OpponentMarallich, E (Eli) | ||||||||
| 2 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd1 | typeRapid | result1 | date2023-05-19 | rnd1 | typeRapid | result1 | ||
| OpponentSmith, H (Henre) | OpponentSmith, H (Henre) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd3 | typeRapid | result1 | date2023-05-19 | rnd3 | typeRapid | result1 | ||
| OpponentMarallich, E (Eli) | OpponentMarallich, E (Eli) | ||||||||
| 2 | 1 | TournamentGauteng Open Arnold Classic 2023 | TournamentGauteng Open Arnold Classic 2023 | ||||||
| date2023-05-19 | rnd1 | typeRapid | result1 | date2023-05-19 | rnd1 | typeRapid | result1 | ||
| OpponentSmith, H (Henre) | OpponentSmith, H (Henre) | ||||||||
| # | 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 | Mtimkulu ,L (Lerato) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1552.8 | 1127.8 | 1561.4 | 1127.8 | 0 | 0 | 0 | 0 | ||||||
| 2 | Shabalala ,S (Siyabonga) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 3 | Meyer ,C (Cayden) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1327.2 | 902.2 | 1341.7 | 902.2 | 0 | 0 | 0 | 0 | ||||||
| 4 | Sendowooza ,R (Roland) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 5 | Msibiringi ,U (Unarine) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1200 | 1200 | 1200 | 0 | 0 | 0 | 0 | ||||||
| 6 | Dadi ,J (Joshua) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 7 | Amukelani ,M (Mathebula) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 8 | Marallich ,E (Eli) | 1 | 1 | 425 | 0 | 0 | 0 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1098.2 | 1523.2 | 0 | 0 | 1200 | 1523.2 | 0 | 0 | ||||||
| 9 | Kriel ,D (Devin) | 1 | 0 | -425 | 0 | 0 | 0 | 1 | 0 | -425 | 0 | 0 | 0 |
| 1258.5 | 833.5 | 0 | 0 | 1179.6 | 833.5 | 0 | 0 | ||||||
| 10 | Smith ,H (Henre) | 1 | 1 | 425 | 0 | 0 | 0 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1184.3 | 1609.3 | 0 | 0 | 1320 | 1609.3 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|

