PLAYER PAGE
Personal
Nkosi, S (Sibahlesonke)
Chess SA id
2110118136FIDE id
?Date of birth
2011-09-16 (U16)Gender
FemaleRegion
Johannesburg Metro (GJM)Citizen
RSATitles
Chess SA registered
NoLast active game
2024-10-04Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1342.8 | 1322.5 | 1200 | 1200 |
| Raw rating | 1342.8 | 1318.4 | 1200 | 1200 |
| Weighted rating | 1341.6 | 1322.5 | 1200 | 1200 |
| Weighted performance | 1052.9 | 1054.3 | 0 | 0 |
| Floor | 982 | 981.6 | 700 | 700 |
| K-factor | 32 | 32 | 36 | 36 |
| Min/Max rating change allowed | 135.3 | 140.1 | 165.8 | 165.8 |
| Highest rating | 1498.12024-07-01 | 1497.72024-07-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 14822024-08-01 | 1481.62024-08-01 | 12002024-03-01 | 12002024-03-01 |
| Highest weighted rating | 13342025-08-01 | 1316.72025-08-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 1498.12024-07-01 | 1497.72024-07-01 | 12002024-03-01 | 12002024-03-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 1.5 | 2 | 0 | 0 |
| New rating | 1344.3 | 1324.5 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1342.8 | 1322.5 | 1200 | 1200 |
| Raw rating | 1342.8 | 1318.4 | 1200 | 1200 |
| Weighted rating | 1341.6 | 1322.5 | 1200 | |
| Weighted performance | 1052.9 | 1054.3 | 0 | |
| K-factor | 32 | 32 | 36 | 36 |
| Floor | 982 | 981.6 | 700 | 700 |
| Max/Min rating change allowed | 135.3 | 140.1 | 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 | 1342.8 | 1318.4 | 1200 | 1200 |
| New weighted rating | 1344.3 | 1324.5 | 1200 | 1200 |
| New weighted performance | 1052.5 | 1053.8 | 0 | 0 |
| Temp new rating | 1344.3 | 1324.5 | 1200 | 1200 |
| Temp new rating +/- | 1.5 | 2 | 0 | 0 |
| Final new rating +/- | 1.5 | 2 | 0 | 0 |
| New rating | 1344.3 | 1324.5 | 1200 | 1200 |
| New K-factor | 32 | 32 | 36 | 36 |
| New floor | 982 | 981.6 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 30 | 30 | 0 | 0 | |
| 9 | 9 | 0 | 0 | |
| 14 | 14 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 58 | 58 | 0 | 0 |
| Games since | |||||||||||||||||
| Main30 | Standard30 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Female | ||||||||||||||||
| Age group | U16 | ||||||||||||||||
| Region | Johannesburg Metro (GJM) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Female | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 2857 | 1034 | 283 | ||||||||||||||
| Female | 564 | 199 | 46 | ||||||||||||||
| U16 | 456 | 161 | 43 | ||||||||||||||
| U16 Female | 113 | 43 | 10 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Female | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 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 | 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 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 58 | 31.5 | 54.31 | 36.6 | 1213.3 | 1250 |
| Standard | 58 | 31.5 | 54.31 | 36.6 | 1213.3 | 1250 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-09-30 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-09-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-08-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-07-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-06-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-05-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-04-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-03-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-02-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2025-01-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2024-12-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2024-11-01 | 1342.8 | 1318.4 | 1200 | 1200 |
| 2024-10-01 | 1397.5 | 1381.1 | 1200 | 1200 |
| 2024-09-01 | 1482 | 1481.6 | 1200 | 1200 |
| 2024-08-01 | 1482 | 1481.6 | 1200 | 1200 |
| 2024-07-01 | 1394.3 | 1394.5 | 1200 | 1200 |
| 2024-06-01 | 1394.3 | 1394.5 | 1200 | 1200 |
| 2024-08-01 | 1236.6 | 1247.2 | 1200 | 1200 |
| 2024-04-01 | 1148.3 | 1140 | 1200 | 1200 |
| 2024-03-01 | 1148.3 | 1140 | 1200 | 1200 |
| 2024-02-01 | 1148.3 | 1140 | 1200 | 1200 |
| 2024-01-01 | 1148.3 | 1140 | 1200 | 1200 |
| 2023-12-01 | 1148.3 | 1140 | 1200 | 1200 |
| 2023-11-01 | 1148.3 | 1140 | 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 |
|---|
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gauteng Top Schools 2024 (U13 Open) | 2024-10-04 | 2024-10-04 | Standard | Ekurhuleni (GE) | 5 | 5 | 1 | Yes | Analysis |
| 2 | Gauteng Schools Individuals Finals 2024 (U13 Girls) | 2024-08-16 | 2024-08-16 | Standard | Ekurhuleni (GE) | 5 | 5 | 1 | Yes | Analysis |
| 3 | Mojazo Cluster School League 2024 (High Schools) | 2024-07-26 | 2024-07-26 | Standard | West Rand (GWR) | 5 | 5 | 5 | Yes | Analysis |
| 4 | Siyavuma Primary Open 2024 (Junior) | 2024-05-18 | 2024-05-18 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 5 | Yes | Analysis |
| 5 | D14 Schools Individuals 2024 (U13 Girls) | 2024-05-11 | 2024-05-11 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
| 6 | Mojazo Schools Cluster 2024 (U13) | 2024-04-12 | 2024-04-12 | Standard | West Rand (GWR) | 5 | 5 | 5 | Yes | Analysis |
| 7 | 2023 Gauteng Top Schools (U13 Mixed) | 2023-08-18 | 2023-08-18 | Standard | West Rand (GWR) | 5 | 5 | 1 | Yes | Analysis |
| 8 | Mojazo Cluster Schools Individuals 2023 (U13 Girls) | 2023-04-21 | 2023-04-21 | Standard | Johannesburg Metro (GJM) | 5 | 4 | 2 | Yes | Analysis |
| 9 | 2022 Gauteng Schools Team Championships (U13 Girls) | 2022-08-27 | 2022-08-27 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 10 | 2022 Gauteng Schools Individual Chess Championship (U11 Girls) | 2022-06-18 | 2022-06-18 | Standard | Ekurhuleni (GE) | 5 | 4 | 1 | Yes | Analysis |
| 11 | 2022 Gauteng Schools Individual Chess Championship (U11 Girls) | 2022-06-18 | 2022-06-18 | Standard | Ekurhuleni (GE) | 5 | 5 | 2.5 | Yes | Analysis |
| 12 | 2019 Gauteng School League Finals (U9 Open) | 2019-08-23 | 2019-08-23 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 10 | TournamentSiyavuma Primary Open 2024 | TournamentMojazo Cluster School League 2024 | ||||||
| date2024-05-18 | rnd1 | typeStandard | result1 | date2024-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentMkhize, S (Sibongimpilo) | OpponentKhumalo, S (Sihle) | ||||||||
| 2 | 5 | TournamentMojazo Schools Cluster 2024 | TournamentMojazo Schools Cluster 2024 | ||||||
| date2024-04-12 | rnd1 | typeStandard | result1 | date2024-04-12 | rnd5 | typeStandard | result1 | ||
| OpponentMajola, Z (Zamokuhle) | OpponentNcube, K (Konkokuhle) | ||||||||
| 3 | 3 | TournamentD14 Schools Individuals 2024 | TournamentD14 Schools Individuals 2024 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2024-05-11 | rnd4 | typeStandard | result1 | ||
| OpponentMagoro, H (Hope) | OpponentMatela, R (Reitumetse) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 10 | TournamentSiyavuma Primary Open 2024 | TournamentMojazo Cluster School League 2024 | ||||||
| date2024-05-18 | rnd1 | typeStandard | result1 | date2024-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentMkhize, S (Sibongimpilo) | OpponentKhumalo, S (Sihle) | ||||||||
| 2 | 5 | TournamentMojazo Schools Cluster 2024 | TournamentMojazo Schools Cluster 2024 | ||||||
| date2024-04-12 | rnd1 | typeStandard | result1 | date2024-04-12 | rnd5 | typeStandard | result1 | ||
| OpponentMajola, Z (Zamokuhle) | OpponentNcube, K (Konkokuhle) | ||||||||
| 3 | 3 | TournamentD14 Schools Individuals 2024 | TournamentD14 Schools Individuals 2024 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2024-05-11 | rnd4 | typeStandard | result1 | ||
| OpponentMagoro, H (Hope) | OpponentMatela, R (Reitumetse) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 10 | TournamentSiyavuma Primary Open 2024 | TournamentMojazo Cluster School League 2024 | ||||||
| date2024-05-18 | rnd1 | typeStandard | result1 | date2024-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentMkhize, S (Sibongimpilo) | OpponentKhumalo, S (Sihle) | ||||||||
| 2 | 5 | TournamentMojazo Schools Cluster 2024 | TournamentMojazo Schools Cluster 2024 | ||||||
| date2024-04-12 | rnd1 | typeStandard | result1 | date2024-04-12 | rnd5 | typeStandard | result1 | ||
| OpponentMajola, Z (Zamokuhle) | OpponentNcube, K (Konkokuhle) | ||||||||
| 3 | 3 | TournamentD14 Schools Individuals 2024 | TournamentD14 Schools Individuals 2024 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2024-05-11 | rnd4 | typeStandard | result1 | ||
| OpponentMagoro, H (Hope) | OpponentMatela, R (Reitumetse) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 10 | TournamentSiyavuma Primary Open 2024 | TournamentMojazo Cluster School League 2024 | ||||||
| date2024-05-18 | rnd1 | typeStandard | result1 | date2024-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentMkhize, S (Sibongimpilo) | OpponentKhumalo, S (Sihle) | ||||||||
| 2 | 5 | TournamentMojazo Schools Cluster 2024 | TournamentMojazo Schools Cluster 2024 | ||||||
| date2024-04-12 | rnd1 | typeStandard | result1 | date2024-04-12 | rnd5 | typeStandard | result1 | ||
| OpponentMajola, Z (Zamokuhle) | OpponentNcube, K (Konkokuhle) | ||||||||
| 3 | 3 | TournamentD14 Schools Individuals 2024 | TournamentD14 Schools Individuals 2024 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2024-05-11 | rnd4 | typeStandard | result1 | ||
| OpponentMagoro, H (Hope) | OpponentMatela, R (Reitumetse) | ||||||||
| # | 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 | Chadoka ,A (Angela) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1193.4 | 768.4 | 1221.2 | 768.4 | 0 | 0 | 0 | 0 | ||||||
| 2 | Kovuzela ,J (Jabulile) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1145.9 | 720.9 | 1134 | 720.9 | 0 | 0 | 0 | 0 | ||||||
| 3 | Khumalo ,S (Sihle) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1245 | 1670 | 1250.4 | 1670 | 0 | 0 | 0 | 0 | ||||||
| 4 | Gouws ,Z (Zanco) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1296.9 | 871.9 | 1291.2 | 871.9 | 0 | 0 | 0 | 0 | ||||||
| 5 | Matela ,R (Reitumetse) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 6 | Nzama ,N (Nomthandazo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1116.4 | 1541.4 | 1100.3 | 1541.4 | 0 | 0 | 0 | 0 | ||||||
| 7 | Motsoeneng ,T (Teboho) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1169.8 | 744.8 | 1163.2 | 744.8 | 0 | 0 | 0 | 0 | ||||||
| 8 | Viljoen ,C (Chene) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1011.8 | 586.8 | 1001.7 | 586.8 | 0 | 0 | 0 | 0 | ||||||
| 9 | Nene ,O (Owami) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1181.7 | 1606.7 | 1178.4 | 1606.7 | 0 | 0 | 0 | 0 | ||||||
| 10 | Mthembu ,C (Celimpilo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1163.6 | 1588.6 | 1158.2 | 1588.6 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|