PLAYER PAGE
Personal
Krog, R (Ruan)
Chess SA id
1170161725FIDE id
?Date of birth
2017-09-26 (U10)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-08-16Personal details last changed
1900-01-01Junior GPX Games
46Junior GPX Points
1238.3| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1379.8 | 1382.7 | 1166.5 | 1200 |
| Raw rating | 1337.2 | 1347.5 | 1166.5 | 1200 |
| Weighted rating | 1204.6 | 1214.1 | 1165.5 | 1200 |
| Weighted performance | 1379.8 | 1382.7 | 0 | 0 |
| Floor | 837.2 | 847.5 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 136.4 | 134.4 | 173.9 | 165.8 |
| Highest rating | 1393.92025-09-01 | 1396.72025-09-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 1337.22025-09-01 | 1347.52025-09-01 | 12002019-12-01 | 12002024-03-01 |
| Highest weighted rating | 1208.82018-10-01 | 12092018-10-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 1393.92025-09-01 | 1396.72025-09-01 | 12002019-12-01 | 12002024-03-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -0.5 | -0.5 | 0 | 0 |
| New rating | 1379.3 | 1382.2 | 1166.5 | 1200 |
| Analysis | ||||
| Rating | 1379.8 | 1382.7 | 1166.5 | 1200 |
| Raw rating | 1337.2 | 1347.5 | 1166.5 | 1200 |
| Weighted rating | 1204.6 | 1214.1 | 1165.5 | |
| Weighted performance | 1379.8 | 1382.7 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 837.2 | 847.5 | 700 | 700 |
| Max/Min rating change allowed | 136.4 | 134.4 | 173.9 | 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 | 1337.2 | 1347.5 | 1166.5 | 1200 |
| New weighted rating | 1216.6 | 1226 | 1165.6 | 1200 |
| New weighted performance | 1379.3 | 1382.2 | 0 | 0 |
| Temp new rating | 1379.3 | 1382.2 | 1166.5 | 1200 |
| Temp new rating +/- | -0.5 | -0.5 | 0 | 0 |
| Final new rating +/- | -0.5 | -0.5 | 0 | 0 |
| New rating | 1379.3 | 1382.2 | 1166.5 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 837.2 | 847.5 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 41 | 41 | 0 | 0 | |
| 20 | 20 | 0 | 0 | |
| 4 | 0 | 4 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 65 | 61 | 4 | 0 |
| Games since | |||||||||||||||||
| Main61 | Standard61 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U10 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 2379 | 826 | 294 | ||||||||||||||
| Male | 1943 | 673 | 232 | ||||||||||||||
| U10 | 172 | 74 | 29 | ||||||||||||||
| U10 Male | 146 | 66 | 25 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 2235 | 834 | 318 | ||||||||||||||
| Male | 1826 | 679 | 250 | ||||||||||||||
| U10 | 158 | 74 | 29 | ||||||||||||||
| U10 Male | 138 | 67 | 25 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U10 | -1 | -1 | -1 | ||||||||||||||
| U10 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U10 | -1 | -1 | -1 | ||||||||||||||
| U10 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 | 41 | 21 | 51.22 | 10.4 | 1255.3 | 1265.6 |
| Standard | 41 | 21 | 51.22 | 10.4 | 1255.3 | 1265.6 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 65 | 29.5 | 45.38 | -39.2 | 1240.7 | 1201.5 |
| Standard | 61 | 28.5 | 46.72 | -27.9 | 1244.3 | 1216.4 |
| Rapid | 4 | 1 | 25 | -212.5 | 1185.7 | 973.2 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-09-30 | 1337.2 | 1347.5 | 1166.5 | 1200 |
| 2025-09-01 | 1337.2 | 1347.5 | 1166.5 | 1200 |
| 2025-08-01 | 1288.6 | 1288.5 | 1166.5 | 1200 |
| 2025-07-01 | 1208.8 | 1209 | 1166.5 | 1200 |
| 2025-06-01 | 1208.8 | 1209 | 1166.5 | 1200 |
| 2025-05-01 | 1163.7 | 1176.6 | 1166.5 | 1200 |
| 2025-04-01 | 1163.7 | 1176.6 | 1166.5 | 1200 |
| 2025-03-01 | 1163.7 | 1176.5 | 1166.5 | 1200 |
| 2025-02-01 | 1160.9 | 1172.9 | 1166.5 | 1200 |
| 2025-01-01 | 1138.2 | 1145 | 1164 | 1200 |
| 2024-12-01 | 1169.3 | 1178.8 | 1164 | 1200 |
| 2024-11-01 | 1169.3 | 1178.8 | 1164 | 1200 |
| 2024-10-01 | 1169.3 | 1178.8 | 1164 | 1200 |
| 2024-09-01 | 1154.1 | 1165.8 | 1164 | 1200 |
| 2024-08-01 | 1154.1 | 1165.8 | 1164 | 1200 |
| 2024-07-01 | 1159.5 | 1175.5 | 1164 | 1200 |
| 2024-06-01 | 1159.5 | 1175.5 | 1164 | 1200 |
| 2024-08-01 | 1159.5 | 1175.5 | 1164 | 1200 |
| 2024-04-01 | 1159.5 | 1175.5 | 1164 | 1200 |
| 2024-03-01 | 1159.5 | 1175.5 | 1164 | 1200 |
| 2024-02-01 | 1159.5 | 1175.5 | 1164 | 1200 |
| 2024-01-01 | 1177.1 | 1200 | 1164 | 1200 |
| 2023-12-01 | 1177.1 | 1200 | 1164 | 1200 |
| 2023-11-01 | 1177.1 | 1200 | 1164 | 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 Tshwane North District CLOSED Team Championships (D3) (U9) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 2 | 2025 Etienne Lewis Closed Chess Tournament (U10) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 6 | 3 | Yes | Analysis |
| 3 | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U9) | 2025-07-26 | 2025-07-26 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 4 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U9 Open) | 2025-05-24 | 2025-05-24 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 5 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 6 | 2025 Silver Lakes Chess Club Open Chess Tournament (U10) | 2025-05-03 | 2025-05-03 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 7 | 2025 Piet Robbertse Fide Rated Open Chess Tournament (E) | 2025-02-01 | 2025-02-01 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 8 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 9 | Gauteng Inter-Region at UJ 2024 (U8 Mixed) | 2024-12-06 | 2024-12-07 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 1 | Yes | Analysis |
| 10 | 2024 Etienne Lewis (U8) | 2024-08-31 | 2024-08-31 | Standard | Tshwane (GTP) | 5 | 5 | 2.5 | Yes | Analysis |
| 11 | 2024 Tshwane North School District Cluster 4 & 5 Team League (U9) | 2024-07-20 | 2024-07-20 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 12 | 2024 Tshwane Chess OPEN Registration Tournament (F) | 2024-01-27 | 2024-01-27 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 13 | 2023 U8 Open Chess Tournament | 2023-09-02 | 2023-09-02 | Rapid | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-16 | rnd2 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentJoubert, D (Deon) | OpponentTjela, K (Karabo) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-05-24 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
| OpponentTjela, K (Karabo) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 3 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Etienne Lewis Closed Chess Tournament | ||||||
| date2025-07-26 | rnd4 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentJansen Van Vuuren, C (Clana) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-16 | rnd2 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentJoubert, D (Deon) | OpponentTjela, K (Karabo) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-05-24 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
| OpponentTjela, K (Karabo) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 3 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Etienne Lewis Closed Chess Tournament | ||||||
| date2025-07-26 | rnd4 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentJansen Van Vuuren, C (Clana) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | Tournament2023 U8 Open Chess Tournament | Tournament2023 U8 Open Chess Tournament | ||||||
| date2023-09-02 | rnd3 | typeRapid | result0.5 | date2023-09-02 | rnd4 | typeRapid | result0.5 | ||
| OpponentMalan, K (Karli) | OpponentBotha, M (Marloux) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-16 | rnd2 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentJoubert, D (Deon) | OpponentTjela, K (Karabo) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-05-24 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
| OpponentTjela, K (Karabo) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 3 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Etienne Lewis Closed Chess Tournament | ||||||
| date2025-07-26 | rnd4 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentJansen Van Vuuren, C (Clana) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-16 | rnd2 | typeStandard | result1 | date2025-08-16 | rnd5 | typeStandard | result1 | ||
| OpponentJoubert, D (Deon) | OpponentTjela, K (Karabo) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-05-24 | rnd4 | typeStandard | result1 | date2025-07-26 | rnd2 | typeStandard | result1 | ||
| OpponentTjela, K (Karabo) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 3 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Etienne Lewis Closed Chess Tournament | ||||||
| date2025-07-26 | rnd4 | typeStandard | result1 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentJansen Van Vuuren, C (Clana) | ||||||||
| # | 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 | Botha ,Z (Zander) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1279.8 | 854.8 | 1285.8 | 854.8 | 0 | 0 | 0 | 0 | ||||||
| 2 | Erasmus ,J (Jacobus) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1349.7 | 1349.7 | 1352 | 1349.7 | 0 | 0 | 0 | 0 | ||||||
| 3 | Jansen Van Vuuren ,C (Clana) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1186.1 | 1611.1 | 1203.1 | 1611.1 | 0 | 0 | 0 | 0 | ||||||
| 4 | Kgwale ,K (Keratilwe) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1368.6 | 943.6 | 1376.9 | 943.6 | 0 | 0 | 0 | 0 | ||||||
| 5 | Mendonca ,M (Mark) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1331.5 | 906.5 | 1322.1 | 906.5 | 0 | 0 | 0 | 0 | ||||||
| 6 | Kwint ,S (Samuel) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1130.6 | 1555.6 | 1125.9 | 1555.6 | 0 | 0 | 0 | 0 | ||||||
| 7 | Erasmus ,A (Alea Marie) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 8 | Combrinck ,J (Jan Hendrik) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1222.4 | 797.4 | 1224.8 | 797.4 | 0 | 0 | 0 | 0 | ||||||
| 9 | Henning ,L (Laubcher) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1200 | 1200 | 1200 | 0 | 0 | 0 | 0 | ||||||
| 10 | Yahiaoui ,A (Arezki) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1101.7 | 1526.7 | 1089.7 | 1526.7 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|