PLAYER PAGE
Personal
Van Der Merwe, D (Dewald)
Chess SA id
1780130310FIDE id
?Date of birth
1978-03-21 (Adult)Gender
MaleRegion
Dr Kenneth Kaunda (NWP)Citizen
RSATitles
Chess SA registered
NoLast active game
2020-02-15Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1260 | 1231.8 | 1300 | 1300 |
| Raw rating | 1260 | 1231.8 | 1300 | 1300 |
| Weighted rating | 1259.6 | 1231.7 | 1299 | 1299 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 760 | 731.8 | 800 | 800 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 152.2 | 158.5 | 143.8 | 143.8 |
| Highest rating | 1306.62020-02-01 | 1293.62020-02-01 | 13002024-02-01 | 13002024-02-01 |
| Highest raw rating | 12602024-02-01 | 1231.82024-02-01 | 13002024-02-01 | 13002024-02-01 |
| Highest weighted rating | 1258.72025-08-01 | 1231.42025-08-01 | 1296.72025-08-01 | 1296.72025-08-01 |
| Highest weighted performance | 1306.62020-02-01 | 1293.62020-02-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1260 | 1231.8 | 1300 | 1300 |
| Analysis | ||||
| Rating | 1260 | 1231.8 | 1300 | 1300 |
| Raw rating | 1260 | 1231.8 | 1300 | 1300 |
| Weighted rating | 1259.6 | 1231.7 | 1299 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 760 | 731.8 | 800 | 800 |
| Max/Min rating change allowed | 152.2 | 158.5 | 143.8 | 143.8 |
| 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 | 1260 | 1231.8 | 1300 | 1300 |
| New weighted rating | 1259.9 | 1231.7 | 1299.7 | 1299.7 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1260 | 1231.8 | 1300 | 1300 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1260 | 1231.8 | 1300 | 1300 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 760 | 731.8 | 800 | 800 |
| 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 | |
| 0 | 0 | 0 | 0 | |
| History | 8 | 8 | 0 | 0 |
| Games since | |||||||||||||||||
| Main0 | Standard0 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | Adult | ||||||||||||||||
| Region | Dr Kenneth Kaunda (NWP) | ||||||||||||||||
| Province | Northwest (NW) | ||||||||||||||||
| 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 | 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 | 8 | 5 | 62.5 | 106.2 | 1168 | 1274.2 |
| Standard | 8 | 5 | 62.5 | 106.2 | 1168 | 1274.2 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-09-30 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-09-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-08-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-07-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-06-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-05-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-04-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-03-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-02-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2025-01-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-12-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-11-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-10-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-09-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-08-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-07-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-06-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-08-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-04-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-03-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-02-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2024-01-01 | 1260 | 1231.8 | 1300 | 1300 |
| 2023-12-01 | 1220.6 | 1220 | 1200 | 1200 |
| 2023-11-01 | 1220.6 | 1220 | 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 | Wesvalia 2020 (D) | 2020-02-15 | 2020-02-15 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 5 | Yes | Analysis |
| 2 | Gimnasium 2020 (U20) | 2020-02-01 | 2020-02-01 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 3 | 0 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | TournamentWesvalia 2020 | TournamentWesvalia 2020 | ||||||
| date2020-02-15 | rnd1 | typeStandard | result1 | date2020-02-15 | rnd5 | typeStandard | result1 | ||
| OpponentBailey, JM (Joshua) | OpponentOllewagen, J (Jp) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | TournamentWesvalia 2020 | TournamentWesvalia 2020 | ||||||
| date2020-02-15 | rnd1 | typeStandard | result1 | date2020-02-15 | rnd5 | typeStandard | result1 | ||
| OpponentBailey, JM (Joshua) | OpponentOllewagen, J (Jp) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | TournamentWesvalia 2020 | TournamentWesvalia 2020 | ||||||
| date2020-02-15 | rnd1 | typeStandard | result1 | date2020-02-15 | rnd5 | typeStandard | result1 | ||
| OpponentBailey, JM (Joshua) | OpponentOllewagen, J (Jp) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 5 | TournamentWesvalia 2020 | TournamentWesvalia 2020 | ||||||
| date2020-02-15 | rnd1 | typeStandard | result1 | date2020-02-15 | rnd5 | typeStandard | result1 | ||
| OpponentBailey, JM (Joshua) | OpponentOllewagen, J (Jp) | ||||||||
| # | 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 | Ollewagen ,J (Jp) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 2 | Dhlamini ,B (Brian) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1412.8 | 987.8 | 1408.2 | 987.8 | 0 | 0 | 0 | 0 | ||||||
| 3 | Wessels ,L (Lydia) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1007 | 1432 | 970.4 | 1432 | 0 | 0 | 0 | 0 | ||||||
| 4 | Human ,D (Dewald) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1216.6 | 791.6 | 1216.4 | 791.6 | 0 | 0 | 0 | 0 | ||||||
| 5 | Bailey ,JM (Joshua) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1126.6 | 1551.6 | 1111.2 | 1551.6 | 0 | 0 | 0 | 0 | ||||||
| 6 | Ngene ,C (Chiediebube) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 949 | 1374 | 908.4 | 1374 | 0 | 0 | 0 | 0 | ||||||
| 7 | Muller ,B (Brendon) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 8 | Hattingh ,GN (Gerhardus) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1231.9 | 806.9 | 1231.7 | 806.9 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|