PLAYER PAGE
Johan Bosman
1120116463Ekurhuleni (GE)Personal
Main rating
| Rating | 1294 |
| K-factor | 32 |
| Floor | 934.9 |
| Highest | 1477.6 (2022-05-01) |
| Min/Max +/- allowed | 112 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1198.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1294 |
| K-factor | 32 |
| Floor | 934.9 |
| Highest | 1477.6 (2022-05-01) |
| Min/Max +/- allowed | 111.6 |
Standard rating
| Rating | 1260.1 |
| K-factor | 36 |
| Floor | 890.1 |
| Highest | 1405.1 (2022-05-01) |
| Min/Max +/- allowed | 123.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1126.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1260.1 |
| K-factor | 36 |
| Floor | 890.1 |
| Highest | 1405.1 (2022-05-01) |
| Min/Max +/- allowed | 123.8 |
Rapid rating
| Rating | 1375.8 |
| K-factor | 32 |
| Floor | 917 |
| Highest | 1640 (2022-05-01) |
| Min/Max +/- allowed | 88.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1256 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1375.8 |
| K-factor | 32 |
| Floor | 917 |
| Highest | 1640 (2022-05-01) |
| Min/Max +/- allowed | 88.6 |
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 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1309 | 5 | 2 | 1220.8 | 0 | Details |
| 2 | Ekurhuleni North Schools Teams 2025 (U13 Open) | Standard | 2025-08-16 | 2025-08-16 | Ekurhuleni (GE) | 5 | 1321.5 | 5 | 3 | 1293.8 | 0 | Details |
| 3 | Benoni Primary School Cluster Teams 2025 (U13A) | Rapid | 2025-08-02 | 2025-08-02 | Ekurhuleni (GE) | 7 | 1321.5 | 6 | 3 | 1251.9 | 0 | Details |
| 4 | RMS Rapid Chess Open 31 May 2025 (U13) | Rapid | 2025-05-31 | 2025-05-31 | Sedibeng (GSV) | 6 | 1296.5 | 6 | 5 | 1478.5 | 0 | Details |
| 5 | Benoni Primary School Cluster 12 April 2025 (U13 Open) | Standard | 2025-04-12 | 2025-04-12 | Ekurhuleni (GE) | 5 | 1294.2 | 5 | 3 | 1300.7 | 0 | Details |
| 6 | LS Northmead Trials 2025 (U13) | Rapid | 2025-01-25 | 2025-01-25 | Ekurhuleni (GE) | 5 | 1149.4 | 5 | 4 | 1546.1 | 0 | Details |
| 7 | Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open A) | Classical | 2024-12-16 | 2024-12-19 | Capricorn (LCP) | 7 | 1261.2 | 6 | 0.5 | 912.1 | 0 | Details |
| 8 | Gauteng Inter-Region at UJ 2024 (U14 Candidates) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1261.2 | 4 | 0.5 | 1027.1 | 0 | Details |
| 9 | Ekurhuleni Trails 2 2024 (U14) | Standard | 2024-07-27 | 2024-07-27 | Ekurhuleni (GE) | 5 | 1301.6 | 5 | 1.5 | 1049.3 | 0 | Details |
| 10 | Ekurhuleni North Primary Schools District Individual Finals 2024 (U13 Boys) | Standard | 2024-05-11 | 2024-05-11 | Ekurhuleni (GE) | 5 | 1326.8 | 5 | 2 | 1159.3 | 0 | Details |
| 11 | Benoni Primary School Cluster Individuals 2024 (U13 Boys) | Rapid | 2024-03-09 | 2024-03-09 | Ekurhuleni (GE) | 5 | 1308.2 | 5 | 4 | 1463.5 | 0 | Details |
| 12 | Laerskool Northmead Proewe 2024 (U13) | Rapid | 2024-02-10 | 2024-02-10 | Ekurhuleni (GE) | 5 | 1311.7 | 5 | 3 | 1287.4 | 0 | Details |
| 13 | 2024 Gauteng Inter-Region Chess Championship (U12A) | Standard | 2024-01-13 | 2024-01-14 | Tshwane (GTP) | 5 | 1381.5 | 5 | 0 | 981.5 | 0 | Details |
| 14 | 2023 Ekurhuleni North District Schools Finals (U11) | Standard | 2023-07-29 | 2023-07-29 | Ekurhuleni (GE) | 5 | 1365.3 | 4 | 3 | 1495 | 0 | Details |
| 15 | Ekurhuleni Trials 2 2023 (U12) | Standard | 2023-04-22 | 2023-04-22 | Ekurhuleni (GE) | 5 | 1346.7 | 5 | 4 | 1456.8 | 0 | Details |
| 16 | Ekhuruleni Chess Trials 1 2023 (U12) | Standard | 2023-03-25 | 2023-03-25 | Ekurhuleni (GE) | 5 | 1321.2 | 5 | 4 | 1476.1 | 0 | Details |
| 17 | ACB Tournament 2022 (A) | Standard | 2022-10-07 | 2022-10-08 | Ekurhuleni (GE) | 5 | 1340.1 | 0 | 0 | 0 | 0 | Details |
| 18 | ACB Tournament 2022 (B) | Standard | 2022-10-08 | 2022-10-08 | Ekurhuleni (GE) | 5 | 1340.1 | 5 | 2 | 1223.8 | 0 | Details |
| 19 | Ekurhuleni Chess Springs Club Open 2022 (D) | Standard | 2022-09-03 | 2022-09-03 | Ekurhuleni (GE) | 5 | 1371.4 | 5 | 2 | 1162.7 | 0 | Details |
| 20 | Ekurhuleni-North Schools Teams 2022 (U11) | Standard | 2022-08-06 | 2022-08-06 | Ekurhuleni (GE) | 5 | 1417.1 | 5 | 2 | 1129.2 | 0 | Details |
| 21 | 2022 Gauteng Schools Individual Chess Championship (U11 Boys) | Standard | 2022-06-18 | 2022-06-18 | Ekurhuleni (GE) | 5 | 1434.9 | 5 | 3 | 1327.5 | 0 | Details |
| 22 | RMS Swiss For Rating of Players 2022 (U11) | Rapid | 2022-05-28 | 2022-05-28 | Ekurhuleni (GE) | 7 | 1331.8 | 6 | 6 | 1625 | 0 | Details |
| 23 | Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys) | Standard | 2022-05-13 | 2022-05-13 | Ekurhuleni (GE) | 5 | 1331.8 | 5 | 4 | 1496.5 | 0 | Details |
| 24 | Ekurhuleni Trials 1 2022 (U12) | Standard | 2022-04-23 | 2022-04-23 | Ekurhuleni (GE) | 5 | 1215.5 | 5 | 4 | 1532.4 | 0 | Details |
| 25 | South African Junior Closed Chess Championships 2022 (U10 Open) | Classical | 2022-03-28 | 2022-04-02 | Chess South Africa (CSA) | 11 | 1215.5 | 11 | 5 | 1211.1 | 0 | Details |
| 26 | 2022 Gauteng Interregion (U10 Open) | Standard | 2022-02-26 | 2022-02-26 | Tshwane (GTP) | 5 | 1172.2 | 5 | 3.5 | 1412.2 | 0 | Details |
| 27 | Ekurhuleni Chess Open 2022 (D) | Standard | 2022-01-08 | 2022-01-09 | Ekurhuleni (GE) | 7 | 1179.4 | 7 | 3 | 1156.2 | 0 | Details |
| 28 | Ekurhuleni Trials (3) | Standard | 2021-11-06 | 2021-11-06 | Ekurhuleni (GE) | 5 | 1166.1 | 5 | 3 | 1248 | 0 | Details |
| 29 | Ekurhuleni Chess Chessa Open 2021 (C) | Standard | 2021-03-27 | 2021-03-27 | Ekurhuleni (GE) | 5 | 1213 | 5 | 1 | 952.8 | 0 | Details |
| 30 | Alberton Chess Club Open 2020 (E) | Standard | 2020-02-22 | 2020-02-22 | Ekurhuleni (GE) | 5 | 1204.6 | 5 | 3 | 1259.3 | 0 | Details |
| 31 | 2019 RMS Laerskole (U9) | Standard | 2019-06-01 | 2019-06-01 | Tshwane (GTP) | 5 | 1200 | 5 | 3 | 1230.6 | 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 | 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 (History)
| Games | 160 |
| Wins | 83 |
| Draws | 8 |
| Losses | 69 |
| White | 80 |
| Black | 80 |
| White wins | 43 |
| Black wins | 40 |
| Score | 87 |
| Percent | 54.4 |
| Dp | 37.2 |
| AOR | 1238.8 |
| Performance | 1276 |
Rankings (Main)
| National | |
| Overall | 6216 |
| Gender | 5132 |
| Age group | 1066 |
| Gender/Age | 826 |
| Provincial | |
| Overall | 2099 |
| Gender | 1736 |
| Age group | 365 |
| Gender/Age | 278 |
| Regional | |
| Overall | 423 |
| Gender | 333 |
| Age group | 90 |
| Gender/Age | 61 |
Rankings (Standard)
| National | |
| Overall | 6795 |
| Gender | 5493 |
| Age group | 1199 |
| Gender/Age | 913 |
| Provincial | |
| Overall | 2461 |
| Gender | 1978 |
| Age group | 453 |
| Gender/Age | 331 |
| Regional | |
| Overall | 492 |
| Gender | 370 |
| Age group | 104 |
| Gender/Age | 67 |
Rankings (Rapid)
| National | |
| Overall | 992 |
| Gender | 847 |
| Age group | 190 |
| Gender/Age | 147 |
| Provincial | |
| Overall | 154 |
| Gender | 131 |
| Age group | 22 |
| Gender/Age | 15 |
| Regional | |
| Overall | 39 |
| Gender | 27 |
| Age group | 10 |
| Gender/Age | 5 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 27 |
| Score | 16 |
| Percent | 59.3 |
| Aor | 1234.6 |
| Dp | 78.7 |
| Prat | 1313.3 |
Performance (History)
| Games | 160 |
| Score | 87 |
| Percent | 54.4 |
| Aor | 1238.8 |
| Dp | 37.2 |
| Prat | 1276 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Fick, L (Logan Nicolas) | 4 | 3 | 1 | Ekurhuleni Trials (3) | Ekurhuleni Trails 2 2024 (U14) | Details |
| Overall | 2 | Buitendag, D (Darius) | 3 | 2 | 1 | Ekurhuleni Chess Springs Club Open 2022 (D) | Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open A) | Details |
| Overall | 3 | Pretorius, W (Wihan) | 3 | 1 | 2 | RMS Swiss For Rating of Players 2022 (U11) | RMS Rapid Chess Open 31 May 2025 (U13) | Details |
| Overall | 4 | Van Loggerenberg, E (Elandre) | 3 | 2 | 1 | Ekurhuleni Trials (3) | LS Northmead Trials 2025 (U13) | Details |
| Overall | 5 | Myburgh, L (Liam) | 2 | 1 | 1 | Ekurhuleni Trials 1 2022 (U12) | 2023 Ekurhuleni North District Schools Finals (U11) | Details |
| Standard | 1 | Fick, L (Logan Nicolas) | 4 | 3 | 1 | Ekurhuleni Trials (3) | Ekurhuleni Trails 2 2024 (U14) | Details |
| Standard | 2 | Buitendag, D (Darius) | 3 | 2 | 1 | Ekurhuleni Chess Springs Club Open 2022 (D) | Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open A) | Details |
| Standard | 3 | Billing, A (Aidin) | 2 | 0 | 2 | Ekurhuleni North Primary Schools District Individual Finals 2024 (U13 Boys) | Ekurhuleni Trails 2 2024 (U14) | Details |
| Standard | 4 | Kheswa, S (Spholami) | 2 | 2 | 0 | Ekurhuleni Trials 1 2022 (U12) | 2022 Gauteng Schools Individual Chess Championship (U11 Boys) | Details |
| Standard | 5 | Retief, A (Antonie) | 2 | 1 | 1 | South African Junior Closed Chess Championships 2022 (U10 Open) | Gauteng Inter-Region at UJ 2024 (U14 Candidates) | Details |
| Rapid | 1 | Pretorius, W (Wihan) | 3 | 1 | 2 | RMS Swiss For Rating of Players 2022 (U11) | RMS Rapid Chess Open 31 May 2025 (U13) | Details |
| Rapid | 2 | van der Berg, Z (Zane) | 2 | 1 | 1 | RMS Rapid Chess Open 31 May 2025 (U13) | RMS Rapid Chess Open 31 May 2025 (U13) | Details |
| Rapid | 3 | Joubert, C (Christopher) | 2 | 1 | 1 | RMS Rapid Chess Open 31 May 2025 (U13) | RMS Rapid Chess Open 31 May 2025 (U13) | Details |