PLAYER PAGE
Personal
Jonker, C (Christiaan)
Chess SA id
1110117926FIDE id
?Date of birth
2011-07-21 (U16)Gender
MaleRegion
Dr Kenneth Kaunda (NWP)Citizen
RSATitles
Chess SA registered
NoLast active game
2023-09-02Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1204.6 | 1209 | 1200 | 1200 |
| Raw rating | 1204.6 | 1209 | 1200 | 1200 |
| Weighted rating | 1204.5 | 1208.9 | 1200 | 1200 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 730.2 | 742 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 164.7 | 163.7 | 165.8 | 165.8 |
| Highest rating | 1230.22023-09-01 | 12422023-09-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 1230.22023-09-01 | 12422023-09-01 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted rating | 1230.22025-07-01 | 12422025-07-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 12002018-02-01 | 12002018-02-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1204.6 | 1209 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1204.6 | 1209 | 1200 | 1200 |
| Raw rating | 1204.6 | 1209 | 1200 | 1200 |
| Weighted rating | 1204.5 | 1208.9 | 1200 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 730.2 | 742 | 700 | 700 |
| Max/Min rating change allowed | 164.7 | 163.7 | 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 | 1204.6 | 1209 | 1200 | 1200 |
| New weighted rating | 1204.5 | 1209 | 1200 | 1200 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1204.6 | 1209 | 1200 | 1200 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1204.6 | 1209 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 730.2 | 742 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 12 | 12 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 16 | 16 | 0 | 0 |
| Games since | |||||||||||||||||
| Main0 | Standard0 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U16 | ||||||||||||||||
| Region | Dr Kenneth Kaunda (NWP) | ||||||||||||||||
| Province | Northwest (NW) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 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 | 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 | 16 | 8 | 50 | 0 | 1195.8 | 1195.8 |
| Standard | 16 | 8 | 50 | 0 | 1195.8 | 1195.8 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1204.6 | 1209 | 1200 | 1200 |
| 2025-09-30 | 1204.6 | 1209 | 1200 | 1200 |
| 2025-09-01 | 1204.6 | 1209 | 1200 | 1200 |
| 2025-08-01 | 1204.6 | 1209 | 1200 | 1200 |
| 2025-07-01 | 1204.6 | 1209 | 1200 | 1200 |
| 2025-06-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2025-05-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2025-04-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2025-03-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2025-02-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2025-01-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-12-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-11-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-10-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-09-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-08-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-07-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-09-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-05-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-04-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-03-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-02-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2024-01-01 | 1204.5 | 1208.9 | 1200 | 1200 |
| 2023-12-01 | 1204.5 | 1208.9 | 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 | DR KKD Trials 2023 (U14) | 2023-09-02 | 2023-09-02 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 2 | Yes | Analysis |
| 2 | DR KKD Meiringspark 2023 (Senior Beginners) | 2023-08-19 | 2023-08-19 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 4.5 | Yes | Analysis |
| 3 | Dr KKD NG Goudkop 2023 (D Senior) | 2023-03-18 | 2023-03-18 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 2 | 0.5 | Yes | Analysis |
| 4 | Boys + Girls Tournament 2019 (U8) | 2019-08-17 | 2019-08-17 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 4 | 1 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | TournamentDr KKD NG Goudkop 2023 | TournamentDR KKD Meiringspark 2023 | ||||||
| date2023-03-18 | rnd2 | typeStandard | result0.5 | date2023-08-19 | rnd5 | typeStandard | result1 | ||
| OpponentManyobe, L (Lesego) | OpponentThiart, J (Joe) | ||||||||
| 2 | 3 | TournamentDR KKD Trials 2023 | TournamentDR KKD Trials 2023 | ||||||
| date2023-09-02 | rnd2 | typeStandard | result0.5 | date2023-09-02 | rnd4 | typeStandard | result0.5 | ||
| OpponentMkhwanazi, R (Reabetswe) | OpponentGrobbelaar, H (Hannes) | ||||||||
| 3 | 1 | TournamentBoys + Girls Tournament 2019 | TournamentBoys + Girls Tournament 2019 | ||||||
| date2019-08-17 | rnd2 | typeStandard | result1 | date2019-08-17 | rnd2 | typeStandard | result1 | ||
| OpponentFernandes, A (Alrichko) | OpponentFernandes, A (Alrichko) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | TournamentDr KKD NG Goudkop 2023 | TournamentDR KKD Meiringspark 2023 | ||||||
| date2023-03-18 | rnd2 | typeStandard | result0.5 | date2023-08-19 | rnd5 | typeStandard | result1 | ||
| OpponentManyobe, L (Lesego) | OpponentThiart, J (Joe) | ||||||||
| 2 | 3 | TournamentDR KKD Trials 2023 | TournamentDR KKD Trials 2023 | ||||||
| date2023-09-02 | rnd2 | typeStandard | result0.5 | date2023-09-02 | rnd4 | typeStandard | result0.5 | ||
| OpponentMkhwanazi, R (Reabetswe) | OpponentGrobbelaar, H (Hannes) | ||||||||
| 3 | 1 | TournamentBoys + Girls Tournament 2019 | TournamentBoys + Girls Tournament 2019 | ||||||
| date2019-08-17 | rnd2 | typeStandard | result1 | date2019-08-17 | rnd2 | typeStandard | result1 | ||
| OpponentFernandes, A (Alrichko) | OpponentFernandes, A (Alrichko) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentDR KKD Meiringspark 2023 | TournamentDR KKD Meiringspark 2023 | ||||||
| date2023-08-19 | rnd4 | typeStandard | result1 | date2023-08-19 | rnd5 | typeStandard | result1 | ||
| OpponentGreyling, J (Jeandre) | OpponentThiart, J (Joe) | ||||||||
| 2 | 2 | TournamentDR KKD Meiringspark 2023 | TournamentDR KKD Meiringspark 2023 | ||||||
| date2023-08-19 | rnd1 | typeStandard | result1 | date2023-08-19 | rnd2 | typeStandard | result1 | ||
| OpponentBroodryk, P (Paula) | OpponentDe Klerk, I (Ivan) | ||||||||
| 3 | 1 | TournamentDR KKD Trials 2023 | TournamentDR KKD Trials 2023 | ||||||
| date2023-09-02 | rnd3 | typeStandard | result1 | date2023-09-02 | rnd3 | typeStandard | result1 | ||
| OpponentVan Wyk, A (Anthonie) | OpponentVan Wyk, A (Anthonie) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentDR KKD Meiringspark 2023 | TournamentDR KKD Meiringspark 2023 | ||||||
| date2023-08-19 | rnd4 | typeStandard | result1 | date2023-08-19 | rnd5 | typeStandard | result1 | ||
| OpponentGreyling, J (Jeandre) | OpponentThiart, J (Joe) | ||||||||
| 2 | 2 | TournamentDR KKD Meiringspark 2023 | TournamentDR KKD Meiringspark 2023 | ||||||
| date2023-08-19 | rnd1 | typeStandard | result1 | date2023-08-19 | rnd2 | typeStandard | result1 | ||
| OpponentBroodryk, P (Paula) | OpponentDe Klerk, I (Ivan) | ||||||||
| 3 | 1 | TournamentDR KKD Trials 2023 | TournamentDR KKD Trials 2023 | ||||||
| date2023-09-02 | rnd3 | typeStandard | result1 | date2023-09-02 | rnd3 | typeStandard | result1 | ||
| OpponentVan Wyk, A (Anthonie) | OpponentVan Wyk, A (Anthonie) | ||||||||
| # | 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 | Fouche ,D (Daru) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1174.8 | 1174.8 | 1200 | 1174.8 | 0 | 0 | 0 | 0 | ||||||
| 2 | Goldschagg ,R (Rudolf) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1315.8 | 890.8 | 1311.7 | 890.8 | 0 | 0 | 0 | 0 | ||||||
| 3 | Van Wyk ,A (Anthonie) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1153.4 | 1578.4 | 1169.8 | 1578.4 | 0 | 0 | 0 | 0 | ||||||
| 4 | Thiart ,J (Joe) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1187.3 | 1612.3 | 1200 | 1612.3 | 0 | 0 | 0 | 0 | ||||||
| 5 | Fernandes ,A (Alrichko) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1120 | 1545 | 1108 | 1545 | 0 | 0 | 0 | 0 | ||||||
| 6 | Mqakelana ,K (Kitso) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 7 | Manyobe ,L (Lesego) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1200 | 1200 | 1200 | 0 | 0 | 0 | 0 | ||||||
| 8 | Mostert ,DE (Dawid Erich) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1302.4 | 877.4 | 1315.2 | 877.4 | 0 | 0 | 0 | 0 | ||||||
| 9 | Esterhuizen ,K (Kiegan) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1190.8 | 765.8 | 1192.1 | 765.8 | 0 | 0 | 0 | 0 | ||||||
| 10 | Mkhwanazi ,R (Reabetswe) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1110.4 | 1110.4 | 1091.7 | 1110.4 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|

