PLAYER PAGE
Personal
Jonker, K (Keola)
Chess SA id
203014307FIDE id
?Date of birth
2003-06-17 (Adult)Gender
FemaleRegion
Johannesburg Metro (GJM)Citizen
RSATitles
Chess SA registered
NoLast active game
2021-10-30Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| Raw rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| Weighted rating | 1458.8 | 1435.6 | 1169.1 | 1169.1 |
| Weighted performance | 473.4 | 462.8 | 0 | 0 |
| Floor | 1014.1 | 1022.1 | 669.1 | 669.1 |
| K-factor | 32 | 32 | 40 | 40 |
| Min/Max rating change allowed | 114.6 | 118.5 | 173.3 | 173.3 |
| Highest rating | 1530.42019-07-01 | 1538.52019-07-01 | 12002024-02-01 | 12002024-02-01 |
| Highest raw rating | 1514.12019-08-01 | 1522.12019-08-01 | 1169.12024-02-01 | 1169.12024-02-01 |
| Highest weighted rating | 1456.52025-08-01 | 1433.42025-08-01 | 1169.12024-11-01 | 1169.12024-11-01 |
| Highest weighted performance | 1530.42019-07-01 | 1538.52019-07-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| Analysis | ||||
| Rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| Raw rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| Weighted rating | 1458.8 | 1435.6 | 1169.1 | |
| Weighted performance | 473.4 | 462.8 | 0 | |
| K-factor | 32 | 32 | 40 | 40 |
| Floor | 1014.1 | 1022.1 | 669.1 | 669.1 |
| Max/Min rating change allowed | 114.6 | 118.5 | 173.3 | 173.3 |
| 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 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| New weighted rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| New weighted performance | 465.8 | 455.4 | 0 | 0 |
| Temp new rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1459 | 1435.9 | 1169.1 | 1169.1 |
| New K-factor | 32 | 32 | 40 | 40 |
| New floor | 1014.1 | 1022.1 | 669.1 | 669.1 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| History | 527 | 501 | 26 | 0 |
| Games since | |||||||||||||||||
| Main0 | Standard0 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Female | ||||||||||||||||
| Age group | Adult | ||||||||||||||||
| Region | Johannesburg Metro (GJM) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Female | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Female | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Female | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult 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 | 130 | 63.5 | 48.85 | -9.8 | 1331.2 | 1321.4 |
| Standard | 130 | 63.5 | 48.85 | -9.8 | 1331.2 | 1321.4 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-09-30 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-09-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-08-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-07-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-06-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-05-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-04-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-03-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-02-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2025-01-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-12-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-11-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-10-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-09-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-08-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-07-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-09-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-05-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-04-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-03-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-02-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2024-01-01 | 1459 | 1435.9 | 1169.1 | 1169.1 |
| 2023-12-01 | 1384.2 | 1360.2 | 1169.1 | 1169.1 |
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 | JMC Everest 2021 (B) | 2021-10-30 | 2021-10-30 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3.5 | Yes | Analysis |
| 2 | JNW Club - Trinityhouse Randpark Ridge Open 2020 (A) | 2020-02-22 | 2020-02-22 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 1 | Yes | Analysis |
| 3 | JNW Club - Bryanston Open1 2020 (A) | 2020-02-01 | 2020-02-01 | Standard | Johannesburg Metro (GJM) | 5 | 4 | 0 | Yes | Analysis |
| 4 | 2019 South African Junior Team Championships (U18A) | 2020-01-04 | 2020-01-08 | Standard | 4 Knights (4K) | 7 | 7 | 3 | Yes | Analysis |
| 5 | JNW Chess Club - Muldersdrif 2019 (A) | 2019-10-18 | 2019-10-18 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 0 | Yes | Analysis |
| 6 | JNW Club - Helpmekaar Kollege Open 2019 (B) | 2019-07-06 | 2019-07-06 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 5 | Yes | Analysis |
| 7 | JHB Metro Closed 2019 (Open) | 2019-07-27 | 2019-07-28 | Standard | Johannesburg Metro (GJM) | 6 | 6 | 3.5 | Yes | Analysis |
| 8 | JNW Club - Hoerskool Linden 2019 (B) | 2019-06-15 | 2019-06-15 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3.5 | Yes | Analysis |
| 9 | 2019 South African Junior Closed Chess Championship (U16 Girls) | 2019-03-17 | 2019-03-22 | Standard | Chess South Africa (CSA) | 9 | 9 | 5 | Yes | Analysis |
| 10 | 2019 Constantia Park Open (A) | 2019-02-09 | 2019-02-09 | Standard | Tshwane (GTP) | 5 | 5 | 1.5 | Yes | Analysis |
| 11 | JNW Club - Trinityhouse Little Falls Open 2019 (A) | 2019-02-23 | 2019-02-23 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 0.5 | Yes | Analysis |
| 12 | JNW Club - Bryanston Open 1 2019 (B) | 2019-01-26 | 2019-01-26 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 4 | Yes | Analysis |
| 13 | Boksburg Open 2019 (A) | 2019-01-19 | 2019-01-19 | Standard | Ekurhuleni (GE) | 5 | 5 | 0.5 | Yes | Analysis |
| 14 | South African Junior Team Championships 2018 (U16B) | 2018-12-16 | 2018-12-20 | Standard | 4 Knights (4K) | 7 | 7 | 6 | Yes | Analysis |
| 15 | JNW Club - Helpmekaar Open 2018 (B) | 2018-09-15 | 2018-09-15 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3.5 | Yes | Analysis |
| 16 | JNW Club - Muldersdrif Open 2018 (B) | 2018-08-18 | 2018-08-18 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
| 17 | JNW Club - Maragon Open 2018 (B) | 2018-08-04 | 2018-08-04 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3.5 | Yes | Analysis |
| 18 | JHB Metro Junior Closed 2018 (U16) | 2018-07-28 | 2018-07-29 | Standard | Johannesburg Metro (GJM) | 6 | 6 | 3.5 | Yes | Analysis |
| 19 | 2018 South African Junior Closed Chess Championships (U16 Girls) | 2018-04-01 | 2018-04-07 | Standard | Chess South Africa (CSA) | 11 | 10 | 5 | Yes | Analysis |
| 20 | Carels Open 2018 (B) | 2018-03-03 | 2018-03-03 | Standard | Sedibeng (GSV) | 5 | 3 | 1 | Yes | Analysis |
| 21 | JNW Club - Northriding College Open 2018 (A) | 2018-03-09 | 2018-03-10 | Standard | Johannesburg Metro (GJM) | 6 | 6 | 1.5 | Yes | Analysis |
| 22 | JNW Club - Trinityhouse Little Falls Open 2018 (B) | 2018-02-16 | 2018-02-17 | Standard | Johannesburg Metro (GJM) | 6 | 6 | 4 | Yes | Analysis |
| 23 | South African Junior Team Championships 2017 (U16A) | 2018-01-04 | 2018-01-08 | Standard | 4 Knights (4K) | 7 | 6 | 1.5 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentJNW Club - Helpmekaar Kollege Open 2019 | TournamentJHB Metro Closed 2019 | ||||||
| date2019-07-06 | rnd1 | typeStandard | result1 | date2019-07-27 | rnd2 | typeStandard | result1 | ||
| OpponentRamlall, S (Sanjana) | OpponentMpya, TM (Tshediso) | ||||||||
| 2 | 6 | TournamentSouth African Junior Team Championships 2018 | TournamentSouth African Junior Team Championships 2018 | ||||||
| date2018-12-16 | rnd2 | typeStandard | result1 | date2018-12-20 | rnd7 | typeStandard | result1 | ||
| OpponentVan Rooy, HF (Herculaas) | OpponentOu, J-Q (Jing-Qian) | ||||||||
| 3 | 5 | Tournament2019 South African Junior Closed Chess Championship | TournamentJNW Club - Hoerskool Linden 2019 | ||||||
| date2019-03-22 | rnd9 | typeStandard | result1 | date2019-06-15 | rnd4 | typeStandard | result0.5 | ||
| OpponentWallace, A (Amy) | OpponentAllison, LM (Liam) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentJNW Club - Helpmekaar Kollege Open 2019 | TournamentJHB Metro Closed 2019 | ||||||
| date2019-07-06 | rnd1 | typeStandard | result1 | date2019-07-27 | rnd2 | typeStandard | result1 | ||
| OpponentRamlall, S (Sanjana) | OpponentMpya, TM (Tshediso) | ||||||||
| 2 | 6 | TournamentSouth African Junior Team Championships 2018 | TournamentSouth African Junior Team Championships 2018 | ||||||
| date2018-12-16 | rnd2 | typeStandard | result1 | date2018-12-20 | rnd7 | typeStandard | result1 | ||
| OpponentVan Rooy, HF (Herculaas) | OpponentOu, J-Q (Jing-Qian) | ||||||||
| 3 | 5 | Tournament2019 South African Junior Closed Chess Championship | TournamentJNW Club - Hoerskool Linden 2019 | ||||||
| date2019-03-22 | rnd9 | typeStandard | result1 | date2019-06-15 | rnd4 | typeStandard | result0.5 | ||
| OpponentWallace, A (Amy) | OpponentAllison, LM (Liam) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentJNW Club - Helpmekaar Kollege Open 2019 | TournamentJHB Metro Closed 2019 | ||||||
| date2019-07-06 | rnd1 | typeStandard | result1 | date2019-07-27 | rnd2 | typeStandard | result1 | ||
| OpponentRamlall, S (Sanjana) | OpponentMpya, TM (Tshediso) | ||||||||
| 2 | 6 | TournamentSouth African Junior Team Championships 2018 | TournamentSouth African Junior Team Championships 2018 | ||||||
| date2018-12-16 | rnd2 | typeStandard | result1 | date2018-12-20 | rnd7 | typeStandard | result1 | ||
| OpponentVan Rooy, HF (Herculaas) | OpponentOu, J-Q (Jing-Qian) | ||||||||
| 3 | 4 | Tournament2019 South African Junior Closed Chess Championship | TournamentJNW Club - Hoerskool Linden 2019 | ||||||
| date2019-03-22 | rnd9 | typeStandard | result1 | date2019-06-15 | rnd3 | typeStandard | result1 | ||
| OpponentWallace, A (Amy) | OpponentCollet, M (Manzungu) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentJNW Club - Helpmekaar Kollege Open 2019 | TournamentJHB Metro Closed 2019 | ||||||
| date2019-07-06 | rnd1 | typeStandard | result1 | date2019-07-27 | rnd2 | typeStandard | result1 | ||
| OpponentRamlall, S (Sanjana) | OpponentMpya, TM (Tshediso) | ||||||||
| 2 | 6 | TournamentSouth African Junior Team Championships 2018 | TournamentSouth African Junior Team Championships 2018 | ||||||
| date2018-12-16 | rnd2 | typeStandard | result1 | date2018-12-20 | rnd7 | typeStandard | result1 | ||
| OpponentVan Rooy, HF (Herculaas) | OpponentOu, J-Q (Jing-Qian) | ||||||||
| 3 | 4 | Tournament2019 South African Junior Closed Chess Championship | TournamentJNW Club - Hoerskool Linden 2019 | ||||||
| date2019-03-22 | rnd9 | typeStandard | result1 | date2019-06-15 | rnd3 | typeStandard | result1 | ||
| OpponentWallace, A (Amy) | OpponentCollet, M (Manzungu) | ||||||||
| # | 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 | Shaw ,LA (Laurie Ann) | 4 | 1.5 | -106.2 | 4 | 1.5 | -106.2 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1503.2 | 1396.9 | 1498.2 | 1396.9 | 0 | 0 | 0 | 0 | ||||||
| 2 | Laureles ,R (Raymundo) | 3 | 1 | -141.7 | 3 | 1 | -141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1532.4 | 1390.7 | 1561.7 | 1390.7 | 0 | 0 | 0 | 0 | ||||||
| 3 | Weisz ,B (Benjamin) | 3 | 1.5 | 0 | 3 | 1.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1390.6 | 1390.6 | 1393.9 | 1390.6 | 0 | 0 | 0 | 0 | ||||||
| 4 | Gardiner ,N (Noa) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1420.8 | 995.8 | 1420.2 | 995.8 | 0 | 0 | 0 | 0 | ||||||
| 5 | Potgieter ,E (Edward) | 3 | 1 | -141.7 | 3 | 1 | -141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1311.8 | 1170.2 | 1308.5 | 1170.2 | 0 | 0 | 0 | 0 | ||||||
| 6 | Ramlall ,S (Sanjana) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1205.2 | 1630.2 | 1247.7 | 1630.2 | 0 | 0 | 0 | 0 | ||||||
| 7 | Rust ,A (Alrich) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1092.9 | 1517.9 | 1088.7 | 1517.9 | 0 | 0 | 0 | 0 | ||||||
| 8 | Govender ,S (Shevern) | 2 | 0.5 | -212.5 | 2 | 0.5 | -212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1506.1 | 1293.6 | 1504.6 | 1293.6 | 0 | 0 | 0 | 0 | ||||||
| 9 | Bester ,E (Ethan) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1383.3 | 958.3 | 1383.1 | 958.3 | 0 | 0 | 0 | 0 | ||||||
| 10 | Carlinsky ,R (Ruan) | 2 | 0.5 | -212.5 | 2 | 0.5 | -212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1296.4 | 1083.9 | 1303.2 | 1083.9 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|