PLAYER PAGE
Personal
Barnes, D (Derek)
Chess SA id
1150304358FIDE id
?Date of birth
2015-10-26 (U12)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-10-18Personal details last changed
1900-01-01Junior GPX Games
53Junior GPX Points
1147| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1305.7 | 1306.8 | 1200 | 1200 |
| Raw rating | 1264 | 1279.3 | 1200 | 1200 |
| Weighted rating | 1223.5 | 1226.8 | 1200 | 1200 |
| Weighted performance | 1305.7 | 1306.8 | 0 | 0 |
| Floor | 764 | 779.3 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 151.4 | 148.1 | 165.8 | 165.8 |
| Highest rating | 1396.92024-05-01 | 13962024-05-01 | 12002024-06-01 | 12002024-06-01 |
| Highest raw rating | 12642025-11-01 | 1279.32025-11-01 | 12002024-06-01 | 12002024-06-01 |
| Highest weighted rating | 1261.22024-10-01 | 1271.62024-10-01 | 12002024-06-01 | 12002024-06-01 |
| Highest weighted performance | 1396.92024-05-01 | 13962024-05-01 | 12002024-06-01 | 12002024-06-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -7.7 | -7.8 | 0 | 0 |
| New rating | 1297.9 | 1299.1 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1305.7 | 1306.8 | 1200 | 1200 |
| Raw rating | 1264 | 1279.3 | 1200 | 1200 |
| Weighted rating | 1223.5 | 1226.8 | 1200 | |
| Weighted performance | 1305.7 | 1306.8 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 764 | 779.3 | 700 | 700 |
| Max/Min rating change allowed | 151.4 | 148.1 | 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 | 1264 | 1279.3 | 1200 | 1200 |
| New weighted rating | 1227 | 1231.3 | 1200 | 1200 |
| New weighted performance | 1297.9 | 1299.1 | 0 | 0 |
| Temp new rating | 1297.9 | 1299.1 | 1200 | 1200 |
| Temp new rating +/- | -7.7 | -7.8 | 0 | 0 |
| Final new rating +/- | -7.7 | -7.8 | 0 | 0 |
| New rating | 1297.9 | 1299.1 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 764 | 779.3 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 44 | 44 | 0 | 0 | |
| 19 | 19 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 63 | 63 | 0 | 0 |
| Games since | |||||||||||||||||
| Main63 | Standard63 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U12 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 3213 | 1078 | 386 | ||||||||||||||
| Male | 2511 | 836 | 296 | ||||||||||||||
| U12 | 483 | 162 | 61 | ||||||||||||||
| U12 Male | 343 | 115 | 38 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 3112 | 1121 | 424 | ||||||||||||||
| Male | 2448 | 883 | 328 | ||||||||||||||
| U12 | 452 | 171 | 64 | ||||||||||||||
| U12 Male | 329 | 123 | 41 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 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 | 44 | 15.5 | 35.23 | -125.6 | 1287.6 | 1162.1 |
| Standard | 44 | 15.5 | 35.23 | -125.6 | 1287.6 | 1162.1 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 63 | 25 | 39.68 | -87.7 | 1267.1 | 1179.4 |
| Standard | 63 | 25 | 39.68 | -87.7 | 1267.1 | 1179.4 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1264 | 1279.3 | 1200 | 1200 |
| 2025-09-30 | 1209 | 1213.4 | 1200 | 1200 |
| 2025-09-01 | 1209 | 1213.4 | 1200 | 1200 |
| 2025-08-01 | 1236.2 | 1240 | 1200 | 1200 |
| 2025-07-01 | 1219.4 | 1221 | 1200 | 1200 |
| 2025-06-01 | 1218.8 | 1220.4 | 1200 | 1200 |
| 2025-05-01 | 1218.3 | 1219.9 | 1200 | 1200 |
| 2025-04-01 | 1213.9 | 1215.2 | 1200 | 1200 |
| 2025-03-01 | 1214.1 | 1214.8 | 1200 | 1200 |
| 2025-02-01 | 1212.8 | 1213.1 | 1200 | 1200 |
| 2025-01-01 | 1194 | 1185.2 | 1200 | 1200 |
| 2024-12-01 | 1194 | 1185.2 | 1200 | 1200 |
| 2024-11-01 | 1246.6 | 1250.7 | 1200 | 1200 |
| 2024-10-01 | 1261.2 | 1271.6 | 1200 | 1200 |
| 2024-09-01 | 1261.2 | 1271.6 | 1200 | 1200 |
| 2024-08-01 | 1238.8 | 1246.8 | 1200 | 1200 |
| 2024-07-01 | 1238.8 | 1246.8 | 1200 | 1200 |
| 2024-09-01 | 1238.8 | 1246.8 | 1200 | 1200 |
| 2024-05-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-04-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-03-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-02-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-01-01 | 1200 | 1200 | 1200 | 1200 |
| 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 | Lardies Open 2025 (U12) | 2025-10-18 | 2025-10-18 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 2 | 2025 Gauteng Top Schools Teams (U11) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 3 | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
| 4 | 2025 Etienne Lewis Closed Chess Tournament (U12) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 1 | Yes | Analysis |
| 5 | 2025 Menlo Open (U12) | 2025-07-26 | 2025-07-26 | Standard | Tshwane (GTP) | 5 | 5 | 2.5 | Yes | Analysis |
| 6 | 2025 Gauteng North School Individual Championships D1 (U11 Open) | 2025-05-17 | 2025-05-17 | Standard | Tshwane (GTP) | 5 | 4 | 2 | Yes | Analysis |
| 7 | Lubowski Open 2025 (D2) | 2025-03-21 | 2025-03-22 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
| 8 | Constantiapark Open 2025 (U12) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
| 9 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 0.5 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Lardies Open 2025 (U12) | 2025-10-18 | 2025-10-18 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 2 | 2025 Gauteng Top Schools Teams (U11) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 3 | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
| 4 | 2025 Etienne Lewis Closed Chess Tournament (U12) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 1 | Yes | Analysis |
| 5 | 2025 Menlo Open (U12) | 2025-07-26 | 2025-07-26 | Standard | Tshwane (GTP) | 5 | 5 | 2.5 | Yes | Analysis |
| 6 | 2025 Gauteng North School Individual Championships D1 (U11 Open) | 2025-05-17 | 2025-05-17 | Standard | Tshwane (GTP) | 5 | 4 | 2 | Yes | Analysis |
| 7 | Lubowski Open 2025 (D2) | 2025-03-21 | 2025-03-22 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
| 8 | Constantiapark Open 2025 (U12) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
| 9 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 0.5 | Yes | Analysis |
| 10 | Lardies Ope 2024 (U10) | 2024-10-26 | 2024-10-26 | Standard | Tshwane (GTP) | 5 | 4 | 0.5 | Yes | Analysis |
| 11 | Gauteng Top Schools 2024 (U9 Open) | 2024-10-04 | 2024-10-04 | Standard | Ekurhuleni (GE) | 5 | 5 | 2 | Yes | Analysis |
| 12 | D1 Gauteng North District School Closed 2024 (U9) | 2024-08-03 | 2024-08-03 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
| 13 | 2024 Gauteng North School District Individual Championships - D1 (U9 Boys) | 2024-05-11 | 2024-05-11 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Gauteng North School District CLOSED League Finals - D1 | Tournament2025 Gauteng Top Schools Teams | ||||||
| date2025-08-16 | rnd4 | typeStandard | result1 | date2025-08-29 | rnd2 | typeStandard | result1 | ||
| OpponentPhoku, H (Happen) | OpponentRosslee, S (Stephanus Johannes) | ||||||||
| 2 | 4 | Tournament2025 Menlo Open | Tournament2025 Menlo Open | ||||||
| date2025-07-26 | rnd2 | typeStandard | result0.5 | date2025-07-26 | rnd5 | typeStandard | result0.5 | ||
| OpponentBettesworth, J (Joshua) | OpponentTukker, J (Jakus) | ||||||||
| 3 | 3 | TournamentD1 Gauteng North District School Closed 2024 | TournamentGauteng Top Schools 2024 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2024-10-04 | rnd1 | typeStandard | result1 | ||
| OpponentSlabbert, A (Ava) | OpponentCordier, L (Leandre) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Menlo Open | Tournament2025 Menlo Open | ||||||
| date2025-07-26 | rnd2 | typeStandard | result0.5 | date2025-07-26 | rnd5 | typeStandard | result0.5 | ||
| OpponentBettesworth, J (Joshua) | OpponentTukker, J (Jakus) | ||||||||
| 2 | 3 | TournamentD1 Gauteng North District School Closed 2024 | TournamentGauteng Top Schools 2024 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2024-10-04 | rnd1 | typeStandard | result1 | ||
| OpponentSlabbert, A (Ava) | OpponentCordier, L (Leandre) | ||||||||
| 3 | 3 | Tournament2024 Gauteng North School District Individual Championships - D1 | TournamentD1 Gauteng North District School Closed 2024 | ||||||
| date2024-05-11 | rnd5 | typeStandard | result1 | date2024-08-03 | rnd2 | typeStandard | result1 | ||
| OpponentPretorius, C (Caleb) | OpponentKhanye, M (Minenhle) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | TournamentD1 Gauteng North District School Closed 2024 | TournamentGauteng Top Schools 2024 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2024-10-04 | rnd1 | typeStandard | result1 | ||
| OpponentSlabbert, A (Ava) | OpponentCordier, L (Leandre) | ||||||||
| 2 | 2 | Tournament2025 Gauteng North School District CLOSED League Finals - D1 | Tournament2025 Gauteng North School District CLOSED League Finals - D1 | ||||||
| date2025-08-16 | rnd4 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentPhoku, H (Happen) | OpponentRampersadh, M (Micah) | ||||||||
| 3 | 2 | Tournament2024 Gauteng North School District Individual Championships - D1 | Tournament2024 Gauteng North School District Individual Championships - D1 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2024-05-11 | rnd3 | typeStandard | result1 | ||
| OpponentMc Gill, J (Jonathan) | OpponentSpies, D (Duard) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | TournamentD1 Gauteng North District School Closed 2024 | TournamentGauteng Top Schools 2024 | ||||||
| date2024-08-03 | rnd4 | typeStandard | result1 | date2024-10-04 | rnd1 | typeStandard | result1 | ||
| OpponentSlabbert, A (Ava) | OpponentCordier, L (Leandre) | ||||||||
| 2 | 2 | Tournament2025 Gauteng North School District CLOSED League Finals - D1 | Tournament2025 Gauteng North School District CLOSED League Finals - D1 | ||||||
| date2025-08-16 | rnd4 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentPhoku, H (Happen) | OpponentRampersadh, M (Micah) | ||||||||
| 3 | 2 | Tournament2024 Gauteng North School District Individual Championships - D1 | Tournament2024 Gauteng North School District Individual Championships - D1 | ||||||
| date2024-05-11 | rnd2 | typeStandard | result1 | date2024-05-11 | rnd3 | typeStandard | result1 | ||
| OpponentMc Gill, J (Jonathan) | OpponentSpies, D (Duard) | ||||||||
| # | 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 | Motumi ,T (Tsepe) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1278.6 | 853.6 | 1271.6 | 853.6 | 0 | 0 | 0 | 0 | ||||||
| 2 | Venter ,D (Daniel) | 2 | 0.5 | -212.5 | 2 | 0.5 | -212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1127.1 | 914.6 | 1118.2 | 914.6 | 0 | 0 | 0 | 0 | ||||||
| 3 | Mendonca ,N (Nelita) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1360.2 | 935.2 | 1361.9 | 935.2 | 0 | 0 | 0 | 0 | ||||||
| 4 | Bettesworth ,J (Joshua) | 2 | 0.5 | -212.5 | 2 | 0.5 | -212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1257.3 | 1044.8 | 1264.8 | 1044.8 | 0 | 0 | 0 | 0 | ||||||
| 5 | Kgwale ,O (Obotegile) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1453.7 | 1028.7 | 1450.3 | 1028.7 | 0 | 0 | 0 | 0 | ||||||
| 6 | Meijer ,CM (Carlo Marius) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1319.9 | 894.9 | 1316.9 | 894.9 | 0 | 0 | 0 | 0 | ||||||
| 7 | Vosloo ,L (Leja) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1314.9 | 889.9 | 1301.8 | 889.9 | 0 | 0 | 0 | 0 | ||||||
| 8 | Naude ,D (Dylan) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 9 | Pretorius ,C (Caleb) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 10 | Van Der Merwe ,ZC (Zander Christiaan) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1509.7 | 1084.7 | 1503.9 | 1084.7 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|