PLAYER PAGE
Personal
Du Preez, JWL (Jan)
Chess SA id
178008054FIDE id
?Date of birth
1978-01-05 (Adult)Gender
MaleRegion
Sedibeng (GSV)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-08-02Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1405.8 | 1406 | 1407 | 1407 |
| Raw rating | 1404.7 | 1405.5 | 1407 | 1407 |
| Weighted rating | 1405.8 | 1406 | 1406.3 | 1406.3 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 907 | 907 | 907 | 907 |
| K-factor | 32 | 32 | 32 | 32 |
| Min/Max rating change allowed | 123.9 | 123.7 | 123.5 | 123.5 |
| Highest rating | 14072024-02-01 | 14072024-02-01 | 14072024-02-01 | 14072024-02-01 |
| Highest raw rating | 14072024-02-01 | 14072024-02-01 | 14072024-02-01 | 14072024-02-01 |
| Highest weighted rating | 1402.72025-09-01 | 1402.72025-09-01 | 1400.12025-08-01 | 1400.12025-08-01 |
| Highest weighted performance | 12002024-02-01 | 12002024-02-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0.5 | 0.6 | 0 | 0 |
| New rating | 1406.3 | 1406.6 | 1407 | 1407 |
| Analysis | ||||
| Rating | 1405.8 | 1406 | 1407 | 1407 |
| Raw rating | 1404.7 | 1405.5 | 1407 | 1407 |
| Weighted rating | 1405.8 | 1406 | 1406.3 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 32 | 32 | 32 | 32 |
| Floor | 907 | 907 | 907 | 907 |
| Max/Min rating change allowed | 123.9 | 123.7 | 123.5 | 123.5 |
| 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 | 1404.7 | 1405.5 | 1407 | 1407 |
| New weighted rating | 1406.3 | 1406.6 | 1407 | 1407 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1406.3 | 1406.6 | 1407 | 1407 |
| Temp new rating +/- | 0.5 | 0.6 | 0 | 0 |
| Final new rating +/- | 0.5 | 0.6 | 0 | 0 |
| New rating | 1406.3 | 1406.6 | 1407 | 1407 |
| New K-factor | 32 | 32 | 32 | 32 |
| New floor | 907 | 907 | 907 | 907 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 5 | 5 | 0 | 0 |
| Games since | |||||||||||||||||
| Main5 | Standard5 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | Adult | ||||||||||||||||
| Region | Sedibeng (GSV) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| Adult | -1 | -1 | -1 | ||||||||||||||
| Adult 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 | 5 | 2.5 | 50 | 0 | 1385 | 1385 |
| Standard | 5 | 2.5 | 50 | 0 | 1385 | 1385 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 5 | 2.5 | 50 | 0 | 1385 | 1385 |
| Standard | 5 | 2.5 | 50 | 0 | 1385 | 1385 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1404.7 | 1405.5 | 1407 | 1407 |
| 2025-09-30 | 1404.7 | 1405.5 | 1407 | 1407 |
| 2025-09-01 | 1404.7 | 1405.5 | 1407 | 1407 |
| 2025-08-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-07-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-06-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-05-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-04-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-03-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-02-01 | 1407 | 1407 | 1407 | 1407 |
| 2025-01-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-12-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-11-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-10-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-09-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-08-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-07-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-09-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-05-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-04-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-03-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-02-01 | 1407 | 1407 | 1407 | 1407 |
| 2024-01-01 | 1407 | 1407 | 1407 | 1407 |
| 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 | Knight Shift Open Chess Tournament 2025 (Open) | 2025-08-02 | 2025-08-02 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 2.5 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Knight Shift Open Chess Tournament 2025 (Open) | 2025-08-02 | 2025-08-02 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 2.5 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd4 | typeStandard | result1 | date2025-08-02 | rnd5 | typeStandard | result0.5 | ||
| OpponentMokhatsi, P (Phemelo) | OpponentMakhoane, S (Samuel) | ||||||||
| 2 | 1 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd1 | typeStandard | result1 | date2025-08-02 | rnd1 | typeStandard | result1 | ||
| OpponentPhakoe, KE (Kgwadi Ernest) | OpponentPhakoe, KE (Kgwadi Ernest) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd4 | typeStandard | result1 | date2025-08-02 | rnd5 | typeStandard | result0.5 | ||
| OpponentMokhatsi, P (Phemelo) | OpponentMakhoane, S (Samuel) | ||||||||
| 2 | 1 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd1 | typeStandard | result1 | date2025-08-02 | rnd1 | typeStandard | result1 | ||
| OpponentPhakoe, KE (Kgwadi Ernest) | OpponentPhakoe, KE (Kgwadi Ernest) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd4 | typeStandard | result1 | date2025-08-02 | rnd4 | typeStandard | result1 | ||
| OpponentMokhatsi, P (Phemelo) | OpponentMokhatsi, P (Phemelo) | ||||||||
| 2 | 1 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd1 | typeStandard | result1 | date2025-08-02 | rnd1 | typeStandard | result1 | ||
| OpponentPhakoe, KE (Kgwadi Ernest) | OpponentPhakoe, KE (Kgwadi Ernest) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd4 | typeStandard | result1 | date2025-08-02 | rnd4 | typeStandard | result1 | ||
| OpponentMokhatsi, P (Phemelo) | OpponentMokhatsi, P (Phemelo) | ||||||||
| 2 | 1 | TournamentKnight Shift Open Chess Tournament 2025 | TournamentKnight Shift Open Chess Tournament 2025 | ||||||
| date2025-08-02 | rnd1 | typeStandard | result1 | date2025-08-02 | rnd1 | typeStandard | result1 | ||
| OpponentPhakoe, KE (Kgwadi Ernest) | OpponentPhakoe, KE (Kgwadi Ernest) | ||||||||
| # | 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 | Mokhatsi ,P (Phemelo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 2 | Botes ,D (Daniel) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1286.7 | 861.7 | 1287.9 | 861.7 | 0 | 0 | 0 | 0 | ||||||
| 3 | Ngubeni ,JM (Jackie) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1539.4 | 1114.4 | 1529.8 | 1114.4 | 0 | 0 | 0 | 0 | ||||||
| 4 | Phakoe ,KE (Kgwadi Ernest) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1640.4 | 2065.4 | 1677.9 | 2065.4 | 0 | 0 | 0 | 0 | ||||||
| 5 | Makhoane ,S (Samuel) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1258.4 | 1258.4 | 1263.5 | 1258.4 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|