PLAYER PAGE
Personal
Du Preez, J (Joah)
Chess SA id
1110117066FIDE id
?Date of birth
2011-01-24 (U16)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
NoLast active game
2024-07-13Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1313.9 | 1310 | 1207.6 | 1200 |
| Raw rating | 1313.1 | 1308.9 | 1207.6 | 1200 |
| Weighted rating | 1313.9 | 1310 | 1207.6 | 1200 |
| Weighted performance | 1070.5 | 1071.1 | 0 | 0 |
| Floor | 837.3 | 838.8 | 707.6 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 141.1 | 142 | 164 | 165.8 |
| Highest rating | 1342.12024-01-01 | 1338.82024-06-01 | 1236.62022-04-01 | 12002018-10-01 |
| Highest raw rating | 1337.32024-06-01 | 1338.82024-06-01 | 1207.62024-02-01 | 12002024-02-01 |
| Highest weighted rating | 1309.72025-08-01 | 13062025-08-01 | 1207.62024-04-01 | 12002018-10-01 |
| Highest weighted performance | 1342.12024-01-01 | 1338.82024-01-01 | 1236.62022-04-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0.5 | 0.5 | 0 | 0 |
| New rating | 1314.4 | 1310.5 | 1207.6 | 1200 |
| Analysis | ||||
| Rating | 1313.9 | 1310 | 1207.6 | 1200 |
| Raw rating | 1313.1 | 1308.9 | 1207.6 | 1200 |
| Weighted rating | 1313.9 | 1310 | 1207.6 | |
| Weighted performance | 1070.5 | 1071.1 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 837.3 | 838.8 | 707.6 | 700 |
| Max/Min rating change allowed | 141.1 | 142 | 164 | 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 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| New weighted rating | 1314.4 | 1310.5 | 1207.6 | 1200 |
| New weighted performance | 1062.7 | 1063.4 | 0 | 0 |
| Temp new rating | 1314.4 | 1310.5 | 1207.6 | 1200 |
| Temp new rating +/- | 0.5 | 0.5 | 0 | 0 |
| Final new rating +/- | 0.5 | 0.5 | 0 | 0 |
| New rating | 1314.4 | 1310.5 | 1207.6 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 837.3 | 838.8 | 707.6 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 19 | 19 | 0 | 0 | |
| 27 | 27 | 0 | 0 | |
| 12 | 5 | 7 | 0 | |
| 15 | 15 | 0 | 0 | |
| History | 77 | 70 | 7 | 0 |
| Games since | |||||||||||||||||
| Main19 | Standard19 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U16 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| 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 | 77 | 36.5 | 47.4 | -22.1 | 1228.5 | 1206.4 |
| Standard | 70 | 32.5 | 46.43 | -30.4 | 1229.3 | 1199 |
| Rapid | 7 | 4 | 57.14 | 60.7 | 1220.3 | 1281 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-09-30 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-09-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-08-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-07-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-06-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-05-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-04-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-03-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-02-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2025-01-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2024-12-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2024-11-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2024-10-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2024-09-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2024-08-01 | 1313.1 | 1308.9 | 1207.6 | 1200 |
| 2024-07-01 | 1337.3 | 1338.8 | 1207.6 | 1200 |
| 2024-09-01 | 1337.3 | 1338.8 | 1207.6 | 1200 |
| 2024-05-01 | 1327.7 | 1324.4 | 1207.6 | 1200 |
| 2024-04-01 | 1327.7 | 1324.4 | 1207.6 | 1200 |
| 2024-03-01 | 1327.7 | 1324.4 | 1207.6 | 1200 |
| 2024-02-01 | 1327.7 | 1324.4 | 1207.6 | 1200 |
| 2024-01-01 | 1182.8 | 1177.1 | 1207.6 | 1200 |
| 2023-12-01 | 1182.8 | 1177.1 | 1207.6 | 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 | Menlopark Open Chess Tournament 2024 (B) | 2024-07-13 | 2024-07-13 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 2 | 2024 Tshwane South School District CLOSED Individual Championships (U13 Mixed) | 2024-05-11 | 2024-05-11 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 3 | 2024 Tshwane Chess OPEN Registration Tournament (D2) | 2024-01-27 | 2024-01-27 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 4 | 2024 Gauteng Inter-Region Chess Championship (U14C) | 2024-01-13 | 2024-01-14 | Standard | Tshwane (GTP) | 5 | 4 | 3 | Yes | Analysis |
| 5 | 2023 Alekhine Open Tournament (D) | 2023-09-09 | 2023-09-09 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 6 | 2023 Jacaranda Round Robin (J) | 2023-08-12 | 2023-08-12 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 7 | 2023 Etienne Lewis Closed Tournament (U14) | 2023-08-25 | 2023-08-27 | Standard | Tshwane (GTP) | 7 | 7 | 2.5 | Yes | Analysis |
| 8 | 2023 Menlo Open Tournament (D) | 2023-07-22 | 2023-07-22 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 9 | 2023 Tshwane South School District CLOSED Individual Championships (U13 Open) | 2023-04-22 | 2023-04-22 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 10 | 2022 Menlo Open Tournament (D) | 2022-07-23 | 2022-07-23 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 11 | D4 Individuals 2022 (U11 Open) | 2022-04-23 | 2022-04-23 | Rapid | Tshwane (GTP) | 7 | 7 | 4 | Yes | Analysis |
| 12 | 2021 Lardies Ope (D) | 2021-10-30 | 2021-10-30 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 13 | 2021 Chris Greyling Open Tournament (D) | 2021-05-08 | 2021-05-08 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 14 | 2021 Registration Tournament (D) | 2021-03-13 | 2021-03-13 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 15 | 2019 Menlo Open (E) | 2019-07-13 | 2019-07-13 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2024 Tshwane Chess OPEN Registration Tournament | Tournament2024 Tshwane South School District CLOSED Individual Championships | ||||||
| date2024-01-27 | rnd4 | typeStandard | result1 | date2024-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentGoosen, M (Mieke) | OpponentNgoepe, P (Phuti) | ||||||||
| 2 | 3 | Tournament2024 Gauteng Inter-Region Chess Championship | Tournament2024 Tshwane Chess OPEN Registration Tournament | ||||||
| date2024-01-14 | rnd5 | typeStandard | result1 | date2024-01-27 | rnd2 | typeStandard | result1 | ||
| OpponentJansen Van Vuuren, J (Joshua) | OpponentDu Toit, C (Colenso) | ||||||||
| 3 | 3 | Tournament2023 Jacaranda Round Robin | Tournament2023 Jacaranda Round Robin | ||||||
| date2023-08-12 | rnd1 | typeStandard | result1 | date2023-08-12 | rnd3 | typeStandard | result1 | ||
| OpponentKeyter, A (Alissa) | OpponentRahlaga, K (Kaelo Alupheli) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2024 Tshwane Chess OPEN Registration Tournament | Tournament2024 Tshwane South School District CLOSED Individual Championships | ||||||
| date2024-01-27 | rnd4 | typeStandard | result1 | date2024-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentGoosen, M (Mieke) | OpponentNgoepe, P (Phuti) | ||||||||
| 2 | 3 | Tournament2024 Gauteng Inter-Region Chess Championship | Tournament2024 Tshwane Chess OPEN Registration Tournament | ||||||
| date2024-01-14 | rnd5 | typeStandard | result1 | date2024-01-27 | rnd2 | typeStandard | result1 | ||
| OpponentJansen Van Vuuren, J (Joshua) | OpponentDu Toit, C (Colenso) | ||||||||
| 3 | 3 | Tournament2023 Jacaranda Round Robin | Tournament2023 Jacaranda Round Robin | ||||||
| date2023-08-12 | rnd1 | typeStandard | result1 | date2023-08-12 | rnd3 | typeStandard | result1 | ||
| OpponentKeyter, A (Alissa) | OpponentRahlaga, K (Kaelo Alupheli) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | TournamentD4 Individuals 2022 | TournamentD4 Individuals 2022 | ||||||
| date2022-04-23 | rnd4 | typeRapid | result1 | date2022-04-23 | rnd6 | typeRapid | result1 | ||
| OpponentKotze, J (Joshua) | OpponentWagener, K (Keegan) | ||||||||
| 2 | 1 | TournamentD4 Individuals 2022 | TournamentD4 Individuals 2022 | ||||||
| date2022-04-23 | rnd2 | typeRapid | result1 | date2022-04-23 | rnd2 | typeRapid | result1 | ||
| OpponentSibiya, V (Vutomi) | OpponentSibiya, V (Vutomi) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2024 Tshwane Chess OPEN Registration Tournament | Tournament2024 Tshwane South School District CLOSED Individual Championships | ||||||
| date2024-01-27 | rnd4 | typeStandard | result1 | date2024-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentGoosen, M (Mieke) | OpponentNgoepe, P (Phuti) | ||||||||
| 2 | 3 | Tournament2024 Gauteng Inter-Region Chess Championship | Tournament2024 Tshwane Chess OPEN Registration Tournament | ||||||
| date2024-01-14 | rnd5 | typeStandard | result1 | date2024-01-27 | rnd2 | typeStandard | result1 | ||
| OpponentJansen Van Vuuren, J (Joshua) | OpponentDu Toit, C (Colenso) | ||||||||
| 3 | 3 | Tournament2023 Jacaranda Round Robin | Tournament2023 Jacaranda Round Robin | ||||||
| date2023-08-12 | rnd1 | typeStandard | result1 | date2023-08-12 | rnd3 | typeStandard | result1 | ||
| OpponentKeyter, A (Alissa) | OpponentRahlaga, K (Kaelo Alupheli) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2024 Tshwane Chess OPEN Registration Tournament | Tournament2024 Tshwane South School District CLOSED Individual Championships | ||||||
| date2024-01-27 | rnd4 | typeStandard | result1 | date2024-05-11 | rnd2 | typeStandard | result1 | ||
| OpponentGoosen, M (Mieke) | OpponentNgoepe, P (Phuti) | ||||||||
| 2 | 3 | Tournament2024 Gauteng Inter-Region Chess Championship | Tournament2024 Tshwane Chess OPEN Registration Tournament | ||||||
| date2024-01-14 | rnd5 | typeStandard | result1 | date2024-01-27 | rnd2 | typeStandard | result1 | ||
| OpponentJansen Van Vuuren, J (Joshua) | OpponentDu Toit, C (Colenso) | ||||||||
| 3 | 3 | Tournament2023 Jacaranda Round Robin | Tournament2023 Jacaranda Round Robin | ||||||
| date2023-08-12 | rnd1 | typeStandard | result1 | date2023-08-12 | rnd3 | typeStandard | result1 | ||
| OpponentKeyter, A (Alissa) | OpponentRahlaga, K (Kaelo Alupheli) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | TournamentD4 Individuals 2022 | TournamentD4 Individuals 2022 | ||||||
| date2022-04-23 | rnd4 | typeRapid | result1 | date2022-04-23 | rnd6 | typeRapid | result1 | ||
| OpponentKotze, J (Joshua) | OpponentWagener, K (Keegan) | ||||||||
| 2 | 1 | TournamentD4 Individuals 2022 | TournamentD4 Individuals 2022 | ||||||
| date2022-04-23 | rnd2 | typeRapid | result1 | date2022-04-23 | rnd2 | typeRapid | result1 | ||
| OpponentSibiya, V (Vutomi) | OpponentSibiya, V (Vutomi) | ||||||||
| # | 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 | Bienedell ,R (Robin) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1489.1 | 1489.1 | 1486.3 | 1489.1 | 0 | 0 | 0 | 0 | ||||||
| 2 | Mcphail ,M (Matthew) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1195.6 | 770.6 | 1176.7 | 770.6 | 0 | 0 | 0 | 0 | ||||||
| 3 | Bogaard ,A (Anneke) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1171.2 | 1171.2 | 1162.4 | 1171.2 | 0 | 0 | 0 | 0 | ||||||
| 4 | Ottermann ,E (Erik) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1145.7 | 720.7 | 1155.9 | 720.7 | 0 | 0 | 0 | 0 | ||||||
| 5 | Van Der Walt ,H (Henrico) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1250.3 | 1675.3 | 1247.5 | 1675.3 | 0 | 0 | 0 | 0 | ||||||
| 6 | Dixon ,G (Genevieve) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1072.9 | 1497.9 | 1059.8 | 1497.9 | 0 | 0 | 0 | 0 | ||||||
| 7 | Van Niekerk ,RM (Reuben Mentz) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1359.7 | 934.7 | 1355.3 | 934.7 | 0 | 0 | 0 | 0 | ||||||
| 8 | Brenner ,B (Bennett) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1278.6 | 1703.6 | 1288.6 | 1703.6 | 0 | 0 | 0 | 0 | ||||||
| 9 | Van Wyk ,C (Christo) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 10 | Oosthuizen ,L (Ludrick) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1162.6 | 737.6 | 1150.8 | 737.6 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|