PLAYER PAGE
Ethan Oberholzer
102094361Ekurhuleni (GE)Personal
Main rating
| Rating | 1284.3 |
| K-factor | 36 |
| Floor | 835.3 |
| Highest | 1335.3 (2026-01-01) |
| Min/Max +/- allowed | 137 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1218.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1284.3 |
| K-factor | 36 |
| Floor | 835.3 |
| Highest | 1335.3 (2026-01-01) |
| Min/Max +/- allowed | 136.7 |
Standard rating
| Rating | 1288.4 |
| K-factor | 36 |
| Floor | 836.3 |
| Highest | 1336.3 (2026-01-01) |
| Min/Max +/- allowed | 136.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1210.8 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1288.4 |
| K-factor | 36 |
| Floor | 836.3 |
| Highest | 1336.3 (2026-01-01) |
| Min/Max +/- allowed | 136.6 |
Rapid rating
| Rating | 1179 |
| K-factor | 36 |
| Floor | 706.5 |
| Highest | 1231 (2024-08-01) |
| Min/Max +/- allowed | 158.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1058 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1179 |
| K-factor | 36 |
| Floor | 706.5 |
| Highest | 1231 (2024-08-01) |
| Min/Max +/- allowed | 158.6 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Chess Power House February Open 2026 (A) | Standard | 2026-02-21 | 2026-02-21 | Ekurhuleni (GE) | 5 | 1335.5 | 4 | 0.5 | 1187.7 | 0 | Details |
| 2 | Ekurhuleni 1st Standard Tournament 2026 (B) | Standard | 2026-02-14 | 2026-02-14 | Ekurhuleni (GE) | 5 | 1335.5 | 5 | 2 | 1126.4 | 0 | Details |
| 3 | USSA Chess Championships 2025 (Open) | Classical | 2025-12-01 | 2025-12-05 | Johannesburg Metro (GJM) | 9 | 1290.7 | 9 | 4.5 | 1413.6 | 0 | Details |
| 4 | UJ @20 Years Chess Championship 2025 (Open) | Standard | 2025-08-02 | 2025-08-02 | Johannesburg Metro (GJM) | 5 | 1268.8 | 5 | 2.5 | 1401.4 | 0 | Details |
| 5 | Wits 1st Trials 2025 (Open) | Rapid | 2025-03-27 | 2025-03-27 | Johannesburg Metro (GJM) | 5 | 1268.2 | 5 | 2 | 1281.1 | 0 | Details |
| 6 | WITS 6th Trials 2024 | Rapid | 2024-09-21 | 2024-09-21 | Johannesburg Metro (GJM) | 5 | 1291.5 | 4 | 0.5 | 933.8 | 0 | Details |
| 7 | Wits 5th Trials 2024 | Rapid | 2024-08-17 | 2024-08-17 | Johannesburg Metro (GJM) | 5 | 1259.3 | 5 | 3.5 | 1507.7 | 0 | Details |
| 8 | Wits 4th Trials 2024 | Rapid | 2024-07-27 | 2024-07-27 | Johannesburg Metro (GJM) | 5 | 1260.4 | 5 | 2.5 | 1260.5 | 0 | Details |
| 9 | Wits 1st Trials 2024 | Rapid | 2024-03-16 | 2024-03-16 | Johannesburg Metro (GJM) | 5 | 1274.7 | 5 | 2 | 1170.5 | 0 | Details |
| 10 | JMC Kick Off Tournament 2024 (B) | Standard | 2024-01-28 | 2024-01-28 | Johannesburg Metro (GJM) | 5 | 1281 | 5 | 2 | 1256.2 | 0 | Details |
| 11 | JMC Trinity Little Falls 2023 (B) | Standard | 2023-07-02 | 2023-07-02 | Johannesburg Metro (GJM) | 5 | 1241.6 | 5 | 2.5 | 1459.8 | 0 | Details |
| 12 | Alberton Chess Club Tournament 1 2023 (B) | Standard | 2023-04-15 | 2023-04-15 | Ekurhuleni (GE) | 5 | 1243.4 | 5 | 2 | 1228.5 | 0 | Details |
| 13 | Laerkool Midvaal Chess Open 2023 (A) | Standard | 2023-01-28 | 2023-01-28 | Sedibeng (GSV) | 5 | 1247.6 | 5 | 2 | 1230.3 | 0 | Details |
| 14 | Ekurhuleni Chess Springs Club Open 2022 (B) | Standard | 2022-09-03 | 2022-09-03 | Ekurhuleni (GE) | 5 | 1274.2 | 5 | 2.5 | 1113.5 | 0 | Details |
| 15 | South African Open 2022 (B) | Classical | 2022-07-09 | 2022-07-17 | Cape Town (WCT) | 11 | 1277.1 | 10 | 4 | 1271.1 | 0 | Details |
| 16 | 2022 Gauteng Interregion (U20 Open) | Standard | 2022-02-26 | 2022-02-26 | Tshwane (GTP) | 5 | 1261.9 | 5 | 2 | 1342.8 | 0 | Details |
| 17 | Ekurhuleni Chess Open 2022 (B) | Standard | 2022-01-08 | 2022-01-09 | Ekurhuleni (GE) | 5 | 1273 | 5 | 2 | 1218 | 0 | Details |
| 18 | Ekurhuleni Trials (3) | Standard | 2021-11-06 | 2021-11-06 | Ekurhuleni (GE) | 5 | 1319 | 5 | 1 | 1054.2 | 0 | Details |
| 19 | Pinnacle College Waterfall Open (Pinnacle) | Standard | 2021-10-02 | 2021-10-03 | Johannesburg Metro (GJM) | 6 | 1293.3 | 6 | 3.5 | 1399.3 | 0 | Details |
| 20 | Ekurhuleni Chess Chessa Open 2021 (B) | Standard | 2021-03-27 | 2021-03-27 | Ekurhuleni (GE) | 5 | 1265.5 | 5 | 3 | 1431.7 | 0 | Details |
| 21 | 2019 Wild Card Chess Championship (U18 Open) | Classical | 2020-01-09 | 2020-01-12 | 4 Knights (4K) | 7 | 1255.1 | 7 | 2 | 1181.5 | 0 | Details |
| 22 | 2019 South African Junior Team Championships (U18C) | Classical | 2020-01-04 | 2020-01-08 | 4 Knights (4K) | 7 | 1255.1 | 6 | 4 | 1374.2 | 0 | Details |
| 23 | GE vs GSV Inter Regional 2019 (U18A) | Standard | 2019-10-26 | 2019-10-26 | Ekurhuleni (GE) | 5 | 1283.8 | 5 | 1 | 1112.6 | 0 | Details |
| 24 | Ekurhuleni Grand Prix 2019 (B) | Standard | 2019-09-14 | 2019-09-14 | Ekurhuleni (GE) | 5 | 1247.6 | 5 | 2 | 1212.6 | 0 | Details |
| 25 | 2019 Boksburg Chess Club Round Robin (H) | Standard | 2019-09-28 | 2019-09-28 | Ekurhuleni (GE) | 5 | 1247.6 | 5 | 2.5 | 1365.3 | 0 | Details |
| 26 | Springs Open 2019 (B) | Standard | 2019-08-31 | 2019-08-31 | Ekurhuleni (GE) | 5 | 1164.2 | 5 | 3 | 1310.3 | 0 | Details |
| 27 | Bishop Bavin Open 2019 (B) | Standard | 2019-08-17 | 2019-08-17 | Ekurhuleni (GE) | 5 | 1164.2 | 5 | 3 | 1342.4 | 0 | Details |
| 28 | Ekurhuleni Trials (3) | Standard | 2019-06-08 | 2019-06-08 | Ekurhuleni (GE) | 5 | 1176.8 | 5 | 2 | 1127.8 | 0 | Details |
| 29 | Ekurhuleni Trials 2 2019 (U18+U20) | Standard | 2019-04-27 | 2019-04-27 | Ekurhuleni (GE) | 5 | 1167.2 | 5 | 2.5 | 1225 | 0 | Details |
| 30 | Ekurhuleni Trials 1 2019 (U18+U20) | Standard | 2019-03-09 | 2019-03-09 | Ekurhuleni (GE) | 5 | 1144.3 | 5 | 3 | 1270.2 | 0 | Details |
| 31 | Boksburg Open 2019 (B) | Standard | 2019-01-19 | 2019-01-19 | Ekurhuleni (GE) | 5 | 1142.3 | 5 | 2 | 1146.4 | 0 | Details |
| 32 | JNW Club - Maragon Open 2018 (C) | Standard | 2018-08-04 | 2018-08-04 | Johannesburg Metro (GJM) | 5 | 1166.5 | 5 | 2 | 1049 | 0 | Details |
| 33 | Witfield Open 2018 (B) | Standard | 2018-07-21 | 2018-07-21 | Ekurhuleni (GE) | 5 | 1181.1 | 5 | 2 | 1100.1 | 0 | Details |
| 34 | Ekurhuleni Trials 3 2018 (U18+U20) | Standard | 2018-06-16 | 2018-06-16 | Ekurhuleni (GE) | 5 | 1200 | 5 | 2 | 1096.7 | 0 | Details |
| 35 | Jcc Wits 2017 (Junior) | Standard | 2017-09-10 | 2017-09-10 | Johannesburg Metro (GJM) | 5 | 0 | 5 | 3 | 759 | 0 | Details |
Game statistics ( )
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
Game statistics ()
| Games | 9 |
| Wins | 2 |
| Draws | 1 |
| Losses | 6 |
| White | 5 |
| Black | 4 |
| White wins | 2 |
| Black wins | 0 |
| Score | 2.5 |
| Percent | 27.8 |
| Dp | -188.9 |
| AOR | 1342.6 |
| Performance | 1153.7 |
Game statistics (History)
| Games | 181 |
| Wins | 70 |
| Draws | 19 |
| Losses | 92 |
| White | 92 |
| Black | 89 |
| White wins | 41 |
| Black wins | 29 |
| Score | 79.5 |
| Percent | 43.9 |
| Dp | -51.7 |
| AOR | 1300.5 |
| Performance | 1248.8 |
Rankings (Main)
| National | |
| Overall | 6597 |
| Gender | 5430 |
| Age group | 1530 |
| Gender/Age | 1385 |
| Provincial | |
| Overall | 2231 |
| Gender | 1835 |
| Age group | 470 |
| Gender/Age | 425 |
| Regional | |
| Overall | 461 |
| Gender | 358 |
| Age group | 78 |
| Gender/Age | 71 |
Rankings (Standard)
| National | |
| Overall | 5721 |
| Gender | 4674 |
| Age group | 1277 |
| Gender/Age | 1156 |
| Provincial | |
| Overall | 2060 |
| Gender | 1683 |
| Age group | 406 |
| Gender/Age | 366 |
| Regional | |
| Overall | 389 |
| Gender | 301 |
| Age group | 65 |
| Gender/Age | 59 |
Rankings (Rapid)
| National | |
| Overall | 5225 |
| Gender | 3975 |
| Age group | 642 |
| Gender/Age | 579 |
| Provincial | |
| Overall | 991 |
| Gender | 757 |
| Age group | 137 |
| Gender/Age | 127 |
| Regional | |
| Overall | 352 |
| Gender | 237 |
| Age group | 18 |
| Gender/Age | 14 |
Rankings (Blitz)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 9 |
| Score | 2.5 |
| Percent | 27.8 |
| Aor | 1342.6 |
| Dp | -188.9 |
| Prat | 1153.7 |
Performance (12 months)
| Games | 28 |
| Score | 11.5 |
| Percent | 41.1 |
| Aor | 1380.1 |
| Dp | -75.9 |
| Prat | 1304.2 |
Performance (History)
| Games | 181 |
| Score | 79.5 |
| Percent | 43.9 |
| Aor | 1300.5 |
| Dp | -51.7 |
| Prat | 1248.8 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Nkomo, B (Ben) | 4 | 2 | 2 | Ekurhuleni Trials 1 2019 (U18+U20) | Springs Open 2019 (B) | Details |
| Overall | 2 | Slawson, G (Gregory) | 3 | 1 | 2 | Ekurhuleni Trials 3 2018 (U18+U20) | Ekurhuleni Trials (3) | Details |
| Overall | 3 | Fortuin, J (Jeraldo) | 3 | 1 | 2 | Ekurhuleni Trials 2 2019 (U18+U20) | 2019 Wild Card Chess Championship (U18 Open) | Details |
| Overall | 4 | Maritz, C (Christelle) | 2 | 1 | 1 | 2019 South African Junior Team Championships (U18C) | Ekurhuleni Trials (3) | Details |
| Overall | 5 | Hlonolofatso, M (Mailula) | 2 | 2 | 0 | Wits 1st Trials 2024 | Wits 5th Trials 2024 | Details |
| Standard | 1 | Nkomo, B (Ben) | 4 | 2 | 2 | Ekurhuleni Trials 1 2019 (U18+U20) | Springs Open 2019 (B) | Details |
| Standard | 2 | Slawson, G (Gregory) | 3 | 1 | 2 | Ekurhuleni Trials 3 2018 (U18+U20) | Ekurhuleni Trials (3) | Details |
| Standard | 3 | Fortuin, J (Jeraldo) | 3 | 1 | 2 | Ekurhuleni Trials 2 2019 (U18+U20) | 2019 Wild Card Chess Championship (U18 Open) | Details |
| Standard | 4 | Chikwava, R (Ronald) | 2 | 1 | 1 | Pinnacle College Waterfall Open (Pinnacle) | South African Open 2022 (B) | Details |
| Standard | 5 | Bezuidenhout, LP (Lian Pierre) | 2 | 0 | 2 | Ekurhuleni Trials 2 2019 (U18+U20) | Bishop Bavin Open 2019 (B) | Details |
| Rapid | 1 | Hlonolofatso, M (Mailula) | 2 | 2 | 0 | Wits 1st Trials 2024 | Wits 5th Trials 2024 | Details |
| Rapid | 2 | Mkhuma, S (Smangaliso Mbekezeli) | 2 | 1 | 1 | Wits 1st Trials 2024 | WITS 6th Trials 2024 | Details |
| Rapid | 3 | Kadiaka, L (Lerato) | 2 | 2 | 0 | Wits 4th Trials 2024 | WITS 6th Trials 2024 | Details |