PLAYER PAGE
Erasmus Albertus Botha
1170145156Bojanala Platina (NBR)Personal
Main rating
| Rating | 1244.2 |
| K-factor | 32 |
| Floor | 917.6 |
| Highest | 1417.6 (2023-07-01) |
| Min/Max +/- allowed | 122 |
| Rating Change () | |
| Games | 4 |
| Score | 2 |
| We | 0.99 |
| SWe | 0.84 |
| Temp +/- | 26.9 |
| Penalties | 0 |
| Weight perform | 1265.2 |
| Final +/- | +26.9 |
| New Rating () | |
| Rating | 1271.1 |
| K-factor | 32 |
| Floor | 917.6 |
| Highest | 1417.6 (2023-07-01) |
| Min/Max +/- allowed | 121.6 |
Standard rating
| Rating | 1236.8 |
| K-factor | 32 |
| Floor | 913.4 |
| Highest | 1413.4 (2023-07-01) |
| Min/Max +/- allowed | 122.3 |
| Rating Change () | |
| Games | 4 |
| Score | 2 |
| We | 0.96 |
| SWe | 1.04 |
| Temp +/- | 33.3 |
| Penalties | 0 |
| Weight perform | 1256 |
| Final +/- | +33.3 |
| New Rating () | |
| Rating | 1270.1 |
| K-factor | 32 |
| Floor | 913.4 |
| Highest | 1413.4 (2023-07-01) |
| Min/Max +/- allowed | 122.3 |
Rapid rating
| Rating | 1187.2 |
| 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 | 1187.2 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
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 |
| 1 | Bojanala's Circuit Championships 1 of 4 2026 (U8+U10) | Standard | 2026-05-30 | 2026-05-30 | Bojanala Platina (NBR) | 5 | 1244.2 | 4 | 2 | 1462.5 | 26.9 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Bojanala's Battle Of Mount Cambridge 2026 (Center Pawns) | Standard | 2026-03-21 | 2026-03-21 | Bojanala Platina (NBR) | 5 | 1213.3 | 5 | 3 | 1405 | 30.9 | Details |
| 2 | Bojanala's Circuit Championships 3 of 4 2025 (U10) | Standard | 2025-08-09 | 2025-08-09 | Bojanala Platina (NBR) | 5 | 1231.9 | 5 | 1 | 1062.5 | -15.9 | Details |
| 3 | Bojanala's Clash Of Schools -Primary Schools 2025 (U9) | Rapid | 2025-07-26 | 2025-07-26 | Bojanala Platina (NBR) | 5 | 1215.9 | 5 | 3 | 1330.2 | 10 | Details |
| 4 | South African Junior Closed Chess Championships 2025 (U8 Open) | Classical | 2025-03-31 | 2025-04-05 | Cape Winelands (WCW) | 9 | 1250.8 | 9 | 2 | 1087.3 | -35.6 | Details |
| 5 | Bojanala's Waterkloof - The Superior One 2025 (Center Pawns) | Standard | 2025-03-15 | 2025-03-15 | Bojanala Platina (NBR) | 5 | 1214.7 | 5 | 3 | 1380.8 | 16.8 | Details |
| 6 | Bojanala Circuit Championships 1 of 4 2025 (U10) | Standard | 2025-03-01 | 2025-03-01 | Bojanala Platina (NBR) | 5 | 1214.7 | 5 | 3 | 1265.8 | 5.6 | Details |
| 7 | Bojanala's Battle In The Kloof 2025 (Center Pawns) | Standard | 2025-02-15 | 2025-02-15 | Bojanala Platina (NBR) | 5 | 1226.2 | 4 | 1 | 1102.7 | -9.8 | Details |
| 8 | Bojanala Closed Chess Championships 2025 (U8) | Classical | 2025-01-31 | 2025-02-02 | Bojanala Platina (NBR) | 5 | 1226.2 | 5 | 1 | 1024.1 | -24.6 | Details |
| 9 | Mzansi Interprovincial Youth Chess Championships 2024 (U8 Open Championship) | Classical | 2024-12-16 | 2024-12-19 | Capricorn (LCP) | 7 | 1233 | 7 | 3 | 1194.9 | -5.4 | Details |
| 10 | Bojanala's Merry Chess-Mas 2024 (Big Pawns) | Standard | 2024-12-07 | 2024-12-07 | Bojanala Platina (NBR) | 6 | 1233 | 6 | 3 | 1244.8 | 1.3 | Details |
| 11 | Bojanala's Circuit Championships 4 of 4 204 (U8) | Standard | 2024-10-12 | 2024-10-12 | Bojanala Platina (NBR) | 5 | 1229.5 | 5 | 3 | 1243.9 | 2.2 | Details |
| 12 | Bojanala's Battle In The Kloof 2024 (Big Pawns) | Standard | 2024-09-21 | 2024-09-21 | Bojanala Platina (NBR) | 5 | 1188 | 5 | 2 | 1193.8 | 1.3 | Details |
| 13 | Bojanala Circuit Championships 3 of 4 2024 (U8) | Standard | 2024-09-14 | 2024-09-14 | Bojanala Platina (NBR) | 5 | 1188 | 5 | 3.5 | 1327.1 | 14.4 | Details |
| 14 | Bojanala's FIDE In The Sparkling Waters 2024 (Young Junior Champs) | Classical | 2024-08-17 | 2024-08-17 | Bojanala Platina (NBR) | 5 | 1148.6 | 5 | 3 | 1311.1 | 20 | Details |
| 15 | Bojanala's Kings & Queens Rapid and Doubles 2024 (Center Pawns) | Rapid | 2024-08-10 | 2024-08-10 | Bojanala Platina (NBR) | 5 | 1148.6 | 5 | 2 | 1242.9 | 4.6 | Details |
| 16 | Incognito Invitational 2024 (B) | Standard | 2024-07-21 | 2024-07-21 | Bojanala Platina (NBR) | 5 | 1188.7 | 5 | 2 | 1174.7 | -2.3 | Details |
| 17 | Bojanala's Clash Of Schools 2024 (U9) | Standard | 2024-07-20 | 2024-07-20 | Bojanala Platina (NBR) | 5 | 1188.7 | 5 | 1 | 964 | -22.7 | Details |
| 18 | Bojanala Circuit Championship 2 of 4 2024 (U8) | Standard | 2024-06-15 | 2024-06-15 | Bojanala Platina (NBR) | 5 | 1159.2 | 5 | 3 | 1281.9 | 11.1 | Details |
| 19 | South African Junior Closed Chess Championship 2024 (U8 Open) | Classical | 2024-04-27 | 2024-05-01 | Ekurhuleni (GE) | 9 | 1283.2 | 9 | 0 | 893.5 | -83.4 | Details |
| 20 | Bojanala Olienpark's One For The Ages 2024 (Big Pawns) | Standard | 2024-04-20 | 2024-04-20 | Bojanala Platina (NBR) | 5 | 1168.8 | 5 | 3.5 | 1453.8 | 28.4 | Details |
| 21 | Bojanala's Rating Express 2024 (Big Pawns) | Standard | 2024-04-06 | 2024-04-06 | Bojanala Platina (NBR) | 7 | 1168.8 | 6 | 4 | 1376 | 24.2 | Details |
| 22 | Bojanala Silwerrand's Rating Implosion 2024 (Center Pawns) | Standard | 2024-03-16 | 2024-03-16 | Bojanala Platina (NBR) | 5 | 1188.2 | 5 | 2 | 1070.5 | -12.1 | Details |
| 23 | Bojanala Closed Chess Championships Finals 2024 (U8) | Classical | 2024-02-09 | 2024-02-11 | Bojanala Platina (NBR) | 5 | 1199.1 | 5 | 2 | 1146.9 | -7 | Details |
| 24 | Bojanala Closed Chess Championships Stage 1 2024 (U8) | Standard | 2024-01-27 | 2024-01-27 | Bojanala Platina (NBR) | 5 | 1198 | 5 | 3 | 1195.9 | 0.7 | Details |
| 25 | 2023 Cross Border Chess Championships Gaborone vs Bojanala | Standard | 2023-12-14 | 2023-12-14 | Botswana (BOT) | 9 | 1265.5 | 8 | 2 | 950.1 | -52.7 | Details |
| 26 | Bojanala's Merry ChessMas 2023 (Little Pawns) | Standard | 2023-12-09 | 2023-12-09 | Bojanala Platina (NBR) | 5 | 1265.5 | 4 | 3 | 1374.4 | 8.6 | Details |
| 27 | West Rand vs Bojanala Inter-Regional Championships 2023 (U8) | Standard | 2023-10-12 | 2023-10-12 | West Rand (GWR) | 8 | 1271.6 | 8 | 4.5 | 1246.1 | -3.8 | Details |
| 28 | Bojanala's Battle Of Mount Cambridge 2023 (Little Pawns) | Standard | 2023-09-16 | 2023-09-16 | Bojanala Platina (NBR) | 5 | 1238.9 | 5 | 4 | 1439.4 | 20.3 | Details |
| 29 | Bojanala's Spring Cleaning 2023 (Litle Pawns) | Standard | 2023-08-26 | 2023-08-26 | Bojanala Platina (NBR) | 5 | 1367.7 | 5 | 4 | 1450.4 | 9 | Details |
| 30 | Bojanala's Rosewood 2023 (Big Pawns) | Standard | 2023-08-12 | 2023-08-12 | Bojanala Platina (NBR) | 7 | 1367.7 | 6 | 0 | 864 | -57.6 | Details |
| 31 | Bojanala School League 2023 (U7) | Rapid | 2023-07-18 | 2023-08-14 | Bojanala Platina (NBR) | 6 | 1367.7 | 6 | 2 | 1039.2 | -32.4 | Details |
| 32 | Bojanala's FIDE in the Sparkling Waters 2023 (Junior) | Classical | 2023-07-29 | 2023-07-29 | Bojanala Platina (NBR) | 6 | 1417.6 | 6 | 2.5 | 1194 | -31.4 | Details |
| 33 | Bojanala's Post-Exams 2023 (U6) | Standard | 2023-07-24 | 2023-07-24 | Bojanala Platina (NBR) | 5 | 1329.3 | 5 | 5 | 1553.2 | 21.4 | Details |
| 34 | Grenswag's Community Battle 2023 (U8) | Standard | 2023-04-22 | 2023-04-22 | Bojanala Platina (NBR) | 5 | 1259.5 | 5 | 4 | 1426.8 | 15.8 | Details |
| 35 | Silver Lakes Open Chess Tournament (F) | Standard | 2023-04-15 | 2023-04-15 | Tshwane (GTP) | 5 | 1259.5 | 5 | 2 | 1139 | -12.4 | Details |
| 36 | Nories Make It Happen 2023 (U6) | Standard | 2023-03-04 | 2023-03-04 | Bojanala Platina (NBR) | 6 | 1140.2 | 6 | 6 | 1642.3 | 59.5 | Details |
| 37 | One For The Ages 2023 (U6) | Standard | 2023-02-18 | 2023-02-18 | Bojanala Platina (NBR) | 5 | 1062.5 | 5 | 4 | 1455 | 38.8 | Details |
| 38 | Harties Wolf Pack 2023 (U8) | Standard | 2023-01-21 | 2023-01-21 | Bojanala Platina (NBR) | 5 | 1165.3 | 5 | 0 | 650.9 | -51.4 | Details |
| 39 | Lebone II - Day of The Blue Army 2022 (U8) | Standard | 2022-09-03 | 2022-09-03 | Bojanala Platina (NBR) | 5 | 1130.4 | 5 | 3 | 1302 | 17.6 | Details |
| 40 | Bojanala Chess Federation Wildcards 2022 (U8) | Standard | 2022-08-20 | 2022-08-20 | Bojanala Platina (NBR) | 5 | 1200 | 4 | 0 | 758.9 | -34.8 | 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 | 5 |
| Draws | 0 |
| Losses | 4 |
| White | 4 |
| Black | 5 |
| White wins | 1 |
| Black wins | 4 |
| Score | 5 |
| Percent | 55.6 |
| Dp | 47.2 |
| AOR | 1383.4 |
| Performance | 1430.6 |
Game statistics (History)
| Games | 223 |
| Wins | 99 |
| Draws | 12 |
| Losses | 112 |
| White | 109 |
| Black | 114 |
| White wins | 51 |
| Black wins | 48 |
| Score | 105 |
| Percent | 47.1 |
| Dp | -24.8 |
| AOR | 1231.8 |
| Performance | 1207.1 |
Rankings (Main)
| National | |
| Overall | 9339 |
| Gender | 7506 |
| Age group | 447 |
| Gender/Age | 331 |
| Provincial | |
| Overall | 572 |
| Gender | 477 |
| Age group | 28 |
| Gender/Age | 26 |
| Regional | |
| Overall | 339 |
| Gender | 279 |
| Age group | 23 |
| Gender/Age | 21 |
Rankings (Standard)
| National | |
| Overall | 8298 |
| Gender | 6534 |
| Age group | 444 |
| Gender/Age | 317 |
| Provincial | |
| Overall | 552 |
| Gender | 455 |
| Age group | 31 |
| Gender/Age | 28 |
| Regional | |
| Overall | 308 |
| Gender | 254 |
| Age group | 26 |
| Gender/Age | 23 |
Rankings (Rapid)
| National | |
| Overall | 4993 |
| Gender | 3861 |
| Age group | 336 |
| Gender/Age | 250 |
| Provincial | |
| Overall | 202 |
| Gender | 153 |
| Age group | 15 |
| Gender/Age | 12 |
| Regional | |
| Overall | 199 |
| Gender | 150 |
| Age group | 15 |
| Gender/Age | 12 |
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 | 5 |
| Percent | 55.6 |
| Aor | 1383.4 |
| Dp | 47.2 |
| Prat | 1430.6 |
Performance (12 months)
| Games | 19 |
| Score | 9 |
| Percent | 47.4 |
| Aor | 1329.7 |
| Dp | -22.4 |
| Prat | 1307.3 |
Performance (History)
| Games | 223 |
| Score | 105 |
| Percent | 47.1 |
| Aor | 1231.8 |
| Dp | -24.8 |
| Prat | 1207.1 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Mabugu, R (Refilwe) | 13 | 7 | 6 | One For The Ages 2023 (U6) | Bojanala Closed Chess Championships 2025 (U8) | Details |
| Overall | 2 | Kgame, K (Kgosi Otshepeng) | 8 | 5 | 3 | One For The Ages 2023 (U6) | Bojanala Circuit Championships 1 of 4 2025 (U10) | Details |
| Overall | 3 | Diphoko, P (Pelonomi) | 7 | 3 | 4 | Bojanala's Merry ChessMas 2023 (Little Pawns) | Bojanala's Waterkloof - The Superior One 2025 (Center Pawns) | Details |
| Overall | 4 | Kotsokoane, R (Reatlegile) | 7 | 2 | 5 | One For The Ages 2023 (U6) | Bojanala's Circuit Championships 4 of 4 204 (U8) | Details |
| Overall | 5 | Xhalabile, L (Lonwabo) | 7 | 4 | 3 | Bojanala's Merry ChessMas 2023 (Little Pawns) | Bojanala's Battle Of Mount Cambridge 2026 (Center Pawns) | Details |
| Standard | 1 | Mabugu, R (Refilwe) | 13 | 7 | 6 | One For The Ages 2023 (U6) | Bojanala Closed Chess Championships 2025 (U8) | Details |
| Standard | 2 | Kgame, K (Kgosi Otshepeng) | 8 | 5 | 3 | One For The Ages 2023 (U6) | Bojanala Circuit Championships 1 of 4 2025 (U10) | Details |
| Standard | 3 | Kotsokoane, R (Reatlegile) | 7 | 2 | 5 | One For The Ages 2023 (U6) | Bojanala's Circuit Championships 4 of 4 204 (U8) | Details |
| Standard | 4 | Diphoko, P (Pelonomi) | 7 | 3 | 4 | Bojanala's Merry ChessMas 2023 (Little Pawns) | Bojanala's Waterkloof - The Superior One 2025 (Center Pawns) | Details |
| Standard | 5 | Xhalabile, L (Lonwabo) | 7 | 4 | 3 | Bojanala's Merry ChessMas 2023 (Little Pawns) | Bojanala's Battle Of Mount Cambridge 2026 (Center Pawns) | Details |
| Rapid | 1 | Hough, A (Andreas Johannes) | 2 | 1 | 1 | Bojanala School League 2023 (U7) | Bojanala School League 2023 (U7) | Details |
| Rapid | 2 | Langa, T (Thatego) | 2 | 1 | 1 | Bojanala School League 2023 (U7) | Bojanala School League 2023 (U7) | Details |
| Rapid | 3 | Jonas, M (Minenhle) | 2 | 1 | 1 | Bojanala School League 2023 (U7) | Bojanala School League 2023 (U7) | Details |