PLAYER PAGE
Personal
Oosthuizen, R (Roscher)
Chess SA id
1150308908FIDE id
?Date of birth
2015-01-08 (U12)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-08-29Personal details last changed
1900-01-01Junior GPX Games
20Junior GPX Points
1344.7| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1305.9 | 1307.5 | 1200 | 1200 |
| Raw rating | 1292 | 1307.5 | 1200 | 1200 |
| Weighted rating | 1229.5 | 1235.6 | 1200 | 1200 |
| Weighted performance | 1305.9 | 1306 | 0 | 0 |
| Floor | 792.9 | 811.8 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 145.4 | 142.3 | 165.8 | 165.8 |
| Highest rating | 1305.92025-11-01 | 1311.82025-09-01 | 12002024-08-01 | 12002024-08-01 |
| Highest raw rating | 1292.92025-09-01 | 1311.82025-09-01 | 12002024-08-01 | 12002024-08-01 |
| Highest weighted rating | 1229.52025-11-01 | 1235.62025-11-01 | 12002024-08-01 | 12002024-08-01 |
| Highest weighted performance | 1305.92025-11-01 | 13062025-11-01 | 12002024-08-01 | 12002024-08-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -7.9 | 0 | 0 | 0 |
| New rating | 1298 | 1307.5 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1305.9 | 1307.5 | 1200 | 1200 |
| Raw rating | 1292 | 1307.5 | 1200 | 1200 |
| Weighted rating | 1229.5 | 1235.6 | 1200 | |
| Weighted performance | 1305.9 | 1306 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 792.9 | 811.8 | 700 | 700 |
| Max/Min rating change allowed | 145.4 | 142.3 | 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 | 1292 | 1307.5 | 1200 | 1200 |
| New weighted rating | 1235.3 | 1242.5 | 1200 | 1200 |
| New weighted performance | 1298 | 1298.1 | 0 | 0 |
| Temp new rating | 1298 | 1307.5 | 1200 | 1200 |
| Temp new rating +/- | -7.9 | 0 | 0 | 0 |
| Final new rating +/- | -7.9 | 0 | 0 | 0 |
| New rating | 1298 | 1307.5 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 792.9 | 811.8 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 20 | 20 | 0 | 0 | |
| 4 | 4 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 24 | 24 | 0 | 0 |
| Games since | |||||||||||||||||
| Main24 | Standard24 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U12 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 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 | 20 | 13 | 65 | 127.5 | 1221.2 | 1348.7 |
| Standard | 20 | 13 | 65 | 127.5 | 1221.2 | 1348.7 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 24 | 15 | 62.5 | 106.2 | 1233.8 | 1340 |
| Standard | 24 | 15 | 62.5 | 106.2 | 1233.8 | 1340 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1292 | 1307.5 | 1200 | 1200 |
| 2025-09-30 | 1292.9 | 1311.8 | 1200 | 1200 |
| 2025-09-01 | 1292.9 | 1311.8 | 1200 | 1200 |
| 2025-08-01 | 1209.8 | 1212.3 | 1200 | 1200 |
| 2025-07-01 | 1209.5 | 1211.9 | 1200 | 1200 |
| 2025-06-01 | 1209.2 | 1211.4 | 1200 | 1200 |
| 2025-05-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2025-04-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2025-03-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2025-02-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2025-01-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2024-12-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2024-11-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2024-10-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2024-09-01 | 1214.9 | 1218.8 | 1200 | 1200 |
| 2024-08-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-07-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-09-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-05-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-04-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-03-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-02-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-01-01 | 1200 | 1200 | 1200 | 1200 |
| 2023-12-01 | 1200 | 1200 | 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 Gauteng Top Schools Teams (U11) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 2 | 2025 Tshwane North District CLOSED Team Championships (D3) (U11) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 5 | Yes | Analysis |
| 3 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U11 Open) | 2025-05-24 | 2025-05-24 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 4 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U11 Open) | 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 Gauteng Top Schools Teams (U11) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 2 | 2025 Tshwane North District CLOSED Team Championships (D3) (U11) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 5 | Yes | Analysis |
| 3 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U11 Open) | 2025-05-24 | 2025-05-24 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 4 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U11 Open) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 5 | 2024 Tshwane North School District Team League Finals (U9) | 2024-08-03 | 2024-08-03 | Standard | Tshwane (GTP) | 5 | 4 | 2 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 9 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Gauteng Top Schools Teams | ||||||
| date2025-05-24 | rnd5 | typeStandard | result1 | date2025-08-29 | rnd3 | typeStandard | result1 | ||
| OpponentRaphiri, P (Poelano) | OpponentSmith, E (Enya) | ||||||||
| 2 | 3 | Tournament2024 Tshwane North School District Team League Finals | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDire, Q (Queen) | OpponentMthanti, K (Khulekani) | ||||||||
| 3 | 2 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-10 | rnd4 | typeStandard | result1 | ||
| OpponentVan Zyl, M (Marcel) | OpponentBotha, N (Nihan) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-05-24 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentRaphiri, P (Poelano) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 3 | Tournament2024 Tshwane North School District Team League Finals | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDire, Q (Queen) | OpponentMthanti, K (Khulekani) | ||||||||
| 3 | 2 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-10 | rnd4 | typeStandard | result1 | ||
| OpponentVan Zyl, M (Marcel) | OpponentBotha, N (Nihan) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-05-24 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentRaphiri, P (Poelano) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 3 | Tournament2024 Tshwane North School District Team League Finals | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDire, Q (Queen) | OpponentMthanti, K (Khulekani) | ||||||||
| 3 | 2 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-10 | rnd4 | typeStandard | result1 | ||
| OpponentVan Zyl, M (Marcel) | OpponentBotha, N (Nihan) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-05-24 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentRaphiri, P (Poelano) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 3 | Tournament2024 Tshwane North School District Team League Finals | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2025-05-10 | rnd1 | typeStandard | result1 | ||
| OpponentDire, Q (Queen) | OpponentMthanti, K (Khulekani) | ||||||||
| 3 | 2 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-10 | rnd4 | typeStandard | result1 | ||
| OpponentVan Zyl, M (Marcel) | OpponentBotha, N (Nihan) | ||||||||
| # | 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 | Nyakalo ,L (Lubanzi) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1252.2 | 1252.2 | 1256.3 | 1252.2 | 0 | 0 | 0 | 0 | ||||||
| 2 | Krog ,G (Gerhard) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1261.9 | 1261.9 | 1260.5 | 1261.9 | 0 | 0 | 0 | 0 | ||||||
| 3 | Raphiri ,P (Poelano) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1130.2 | 1555.2 | 1119.4 | 1555.2 | 0 | 0 | 0 | 0 | ||||||
| 4 | Jordaan ,K (Keanu) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 5 | Dire ,Q (Queen) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 6 | Mokombo ,S (Sabelo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1178.9 | 1603.9 | 1174.4 | 1603.9 | 0 | 0 | 0 | 0 | ||||||
| 7 | Motsepe ,O (Ofentse) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 8 | Mthanti ,K (Khulekani) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 9 | Smith ,E (Enya) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1197.6 | 1622.6 | 1197.2 | 1622.6 | 0 | 0 | 0 | 0 | ||||||
| 10 | Khumalo ,L (Lesedi) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1204.3 | 779.3 | 1205.1 | 779.3 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|