PLAYER PAGE
Personal
Krog, G (Gerhard)
Chess SA id
1130144857FIDE id
?Date of birth
2013-07-13 (U14)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-08-29Personal details last changed
2025-05-10Junior GPX Games
54Junior GPX Points
1261.8| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1299.8 | 1293.6 | 1200 | 1200 |
| Raw rating | 1284 | 1287.5 | 1200 | 1200 |
| Weighted rating | 1235.5 | 1235 | 1200 | 1200 |
| Weighted performance | 1299.8 | 1293.6 | 0 | 0 |
| Floor | 784 | 787.5 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 147.1 | 146.4 | 165.8 | 165.8 |
| Highest rating | 1349.52024-10-01 | 1347.22024-10-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 12842025-11-01 | 1287.52025-11-01 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted rating | 1268.92023-09-01 | 12662023-09-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 1349.52024-10-01 | 1347.22024-10-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -7.8 | -6.1 | 0 | 0 |
| New rating | 1292.1 | 1287.5 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1299.8 | 1293.6 | 1200 | 1200 |
| Raw rating | 1284 | 1287.5 | 1200 | 1200 |
| Weighted rating | 1235.5 | 1235 | 1200 | |
| Weighted performance | 1299.8 | 1293.6 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 784 | 787.5 | 700 | 700 |
| Max/Min rating change allowed | 147.1 | 146.4 | 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 | 1284 | 1287.5 | 1200 | 1200 |
| New weighted rating | 1241.7 | 1241.6 | 1200 | 1200 |
| New weighted performance | 1292.1 | 1285.8 | 0 | 0 |
| Temp new rating | 1292.1 | 1287.5 | 1200 | 1200 |
| Temp new rating +/- | -7.8 | -6.1 | 0 | 0 |
| Final new rating +/- | -7.8 | -6.1 | 0 | 0 |
| New rating | 1292.1 | 1287.5 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 784 | 787.5 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 47 | 47 | 0 | 0 | |
| 41 | 41 | 0 | 0 | |
| 20 | 20 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 113 | 113 | 0 | 0 |
| Games since | |||||||||||||||||
| Main88 | Standard88 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U14 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 3274 | 1096 | 393 | ||||||||||||||
| Male | 2560 | 852 | 301 | ||||||||||||||
| U14 | 616 | 199 | 66 | ||||||||||||||
| U14 Male | 445 | 140 | 48 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 3241 | 1170 | 443 | ||||||||||||||
| Male | 2536 | 918 | 341 | ||||||||||||||
| U14 | 607 | 212 | 77 | ||||||||||||||
| U14 Male | 430 | 149 | 52 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U14 | -1 | -1 | -1 | ||||||||||||||
| U14 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U14 | -1 | -1 | -1 | ||||||||||||||
| U14 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 | 47 | 25.5 | 54.26 | 36.2 | 1238.7 | 1274.9 |
| Standard | 47 | 25.5 | 54.26 | 36.2 | 1238.7 | 1274.9 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 113 | 55.5 | 49.12 | -7.5 | 1229.6 | 1222 |
| Standard | 113 | 55.5 | 49.12 | -7.5 | 1229.6 | 1222 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1284 | 1287.5 | 1200 | 1200 |
| 2025-09-30 | 1277.7 | 1282.8 | 1200 | 1200 |
| 2025-09-01 | 1277.7 | 1282.8 | 1200 | 1200 |
| 2025-08-01 | 1270.5 | 1271.4 | 1200 | 1200 |
| 2025-07-01 | 1263.5 | 1262.6 | 1200 | 1200 |
| 2025-06-01 | 1263.5 | 1262.6 | 1200 | 1200 |
| 2025-05-01 | 1253.3 | 1249.6 | 1200 | 1200 |
| 2025-04-01 | 1253.3 | 1249.6 | 1200 | 1200 |
| 2025-03-01 | 1253.3 | 1249.6 | 1200 | 1200 |
| 2025-02-01 | 1268.9 | 1266 | 1200 | 1200 |
| 2025-01-01 | 1215.6 | 1218.9 | 1200 | 1200 |
| 2024-12-01 | 1212.6 | 1218.2 | 1200 | 1200 |
| 2024-11-01 | 1212.6 | 1218.2 | 1200 | 1200 |
| 2024-10-01 | 1181.5 | 1180.8 | 1200 | 1200 |
| 2024-09-01 | 1180.8 | 1183 | 1200 | 1200 |
| 2024-08-01 | 1146.7 | 1140.5 | 1200 | 1200 |
| 2024-07-01 | 1118.6 | 1105.2 | 1200 | 1200 |
| 2024-09-01 | 1158.6 | 1154.2 | 1200 | 1200 |
| 2024-05-01 | 1132.9 | 1121.4 | 1200 | 1200 |
| 2024-04-01 | 1132.9 | 1121.4 | 1200 | 1200 |
| 2024-03-01 | 1132.9 | 1121.4 | 1200 | 1200 |
| 2024-02-01 | 1128.8 | 1114.9 | 1200 | 1200 |
| 2024-01-01 | 1180.5 | 1178.6 | 1200 | 1200 |
| 2023-12-01 | 1180.5 | 1178.6 | 1200 | 1200 |
Comming soon.
Tournaments
| # | 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 | 2025 Gauteng Top Schools Teams (U11) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 2 | 2025 Tshwane North District CLOSED Team Championships (D3) (U11) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 3 | 2025 Etienne Lewis Closed Chess Tournament (U12) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 2.5 | Yes | Analysis |
| 4 | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U11) | 2025-07-26 | 2025-07-26 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 5 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U11 Open) | 2025-05-24 | 2025-05-24 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 6 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U11 Open) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 7 | 2025 Silver Lakes Chess Club Open Chess Tournament (D) | 2025-05-03 | 2025-05-03 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 8 | 2025 Piet Robbertse Fide Rated Open Chess Tournament (D) | 2025-02-01 | 2025-02-02 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 9 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 10 | Gauteng Inter-Region at UJ 2024 (U12 Candidates) | 2024-12-07 | 2024-12-08 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
| 11 | Gauteng Top Schools 2024 (Primary Reserves) | 2024-10-04 | 2024-10-04 | Standard | Ekurhuleni (GE) | 5 | 2 | 2 | Yes | Analysis |
| 12 | 2024 Etienne Lewis (U12) | 2024-08-30 | 2024-09-01 | Standard | Tshwane (GTP) | 7 | 7 | 2.5 | Yes | Analysis |
| 13 | 2024 Tshwane North School District Team League Finals (U11) | 2024-08-03 | 2024-08-03 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 14 | 2024 Tshwane North School District Cluster 4 & 5 Team League (U11) | 2024-07-20 | 2024-07-20 | Standard | Tshwane (GTP) | 3 | 3 | 1.5 | Yes | Analysis |
| 15 | 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D) | 2024-06-01 | 2024-06-01 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
| 16 | District 3 Cluster 4 and 5 Individuals 2024 (U11 Boys) | 2024-05-04 | 2024-05-04 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 17 | 2024 Piet Robbertse Open Chess Tournament (D2) | 2024-02-03 | 2024-02-04 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 18 | 2024 Tshwane Chess OPEN Registration Tournament (D1) | 2024-01-27 | 2024-01-27 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 19 | 2023 Centurion Chess Open (E) | 2023-09-23 | 2023-09-23 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 20 | 2023 Alekhine Open Tournament (E+F) | 2023-09-09 | 2023-09-09 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 21 | 2023 Tshwane North School District CLOSED League Championships (D3) | 2023-08-12 | 2023-08-12 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 22 | 2023 Tshwane North School District CLOSED Individual Championships (D3) | 2023-05-13 | 2023-05-13 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 23 | Tuks Junior Developmental Tournament 2022 (Yellow) | 2022-08-06 | 2022-08-06 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2023 Tshwane North School District CLOSED Individual Championships | Tournament2023 Tshwane North School District CLOSED League Championships | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-08-12 | rnd2 | typeStandard | result1 | ||
| OpponentMaphiri, J (Jan) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 4 | Tournament2025 Silver Lakes Chess Club Open Chess Tournament | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-03 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd3 | typeStandard | result1 | ||
| OpponentMatjila, N (Neo) | OpponentRakotonarivo, F (Fanomezantsoa Raphae) | ||||||||
| 3 | 3 | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | Tournament2025 Gauteng Top Schools Teams | ||||||
| date2025-08-16 | rnd4 | typeStandard | result1 | date2025-08-29 | rnd1 | typeStandard | result1 | ||
| OpponentRaphiri, P (Poelano) | OpponentCrous, R (Ruvan) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2023 Tshwane North School District CLOSED Individual Championships | Tournament2023 Tshwane North School District CLOSED League Championships | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-08-12 | rnd2 | typeStandard | result1 | ||
| OpponentMaphiri, J (Jan) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 4 | Tournament2025 Silver Lakes Chess Club Open Chess Tournament | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-03 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd3 | typeStandard | result1 | ||
| OpponentMatjila, N (Neo) | OpponentRakotonarivo, F (Fanomezantsoa Raphae) | ||||||||
| 3 | 3 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd2 | typeStandard | result1 | ||
| OpponentLeshabane, L (Lesego) | OpponentMostert, M (Matthew) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2023 Tshwane North School District CLOSED Individual Championships | Tournament2023 Tshwane North School District CLOSED League Championships | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-08-12 | rnd2 | typeStandard | result1 | ||
| OpponentMaphiri, J (Jan) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 4 | Tournament2025 Silver Lakes Chess Club Open Chess Tournament | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-03 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd3 | typeStandard | result1 | ||
| OpponentMatjila, N (Neo) | OpponentRakotonarivo, F (Fanomezantsoa Raphae) | ||||||||
| 3 | 3 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd2 | typeStandard | result1 | ||
| OpponentLeshabane, L (Lesego) | OpponentMostert, M (Matthew) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 6 | Tournament2023 Tshwane North School District CLOSED Individual Championships | Tournament2023 Tshwane North School District CLOSED League Championships | ||||||
| date2023-05-13 | rnd2 | typeStandard | result1 | date2023-08-12 | rnd2 | typeStandard | result1 | ||
| OpponentMaphiri, J (Jan) | OpponentRaphiri, P (Poelano) | ||||||||
| 2 | 4 | Tournament2025 Silver Lakes Chess Club Open Chess Tournament | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | ||||||
| date2025-05-03 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd3 | typeStandard | result1 | ||
| OpponentMatjila, N (Neo) | OpponentRakotonarivo, F (Fanomezantsoa Raphae) | ||||||||
| 3 | 3 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd2 | typeStandard | result1 | ||
| OpponentLeshabane, L (Lesego) | OpponentMostert, M (Matthew) | ||||||||
| # | 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 | Marais ,L (Luke) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1270.7 | 845.7 | 1275.3 | 845.7 | 0 | 0 | 0 | 0 | ||||||
| 2 | Grobbelaar ,M (Mienje) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1340 | 915 | 1344 | 915 | 0 | 0 | 0 | 0 | ||||||
| 3 | Oosthuizen ,R (Roscher) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1212.4 | 1212.4 | 1215.6 | 1212.4 | 0 | 0 | 0 | 0 | ||||||
| 4 | Mamphweli ,T (Tshedza) | 2 | 1.5 | 212.5 | 2 | 1.5 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1179.3 | 1391.8 | 1161.4 | 1391.8 | 0 | 0 | 0 | 0 | ||||||
| 5 | Raphiri ,P (Poelano) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1141.1 | 1566.1 | 1130.7 | 1566.1 | 0 | 0 | 0 | 0 | ||||||
| 6 | Roux ,N (Noah) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1136.4 | 1561.4 | 1133.2 | 1561.4 | 0 | 0 | 0 | 0 | ||||||
| 7 | Ebersohn ,G (Gerhard) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1458.9 | 1033.9 | 1457.4 | 1033.9 | 0 | 0 | 0 | 0 | ||||||
| 8 | Haupt ,A (Abigail) | 2 | 1.5 | 212.5 | 2 | 1.5 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1281.3 | 1493.8 | 1280.8 | 1493.8 | 0 | 0 | 0 | 0 | ||||||
| 9 | Peenz ,M (Marnus) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1198.3 | 773.3 | 1197.6 | 773.3 | 0 | 0 | 0 | 0 | ||||||
| 10 | Venter ,A (Amile) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1170.7 | 1595.7 | 1172.8 | 1595.7 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|