PLAYER PAGE
Jonah Sher
1120137368Cape Town (WCT)Personal
Main rating
| Rating | 1324.8 |
| K-factor | 36 |
| Floor | 879 |
| Highest | 1393 (2024-03-01) |
| Min/Max +/- allowed | 126 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1020.8 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1324.8 |
| K-factor | 36 |
| Floor | 879 |
| Highest | 1393 (2024-03-01) |
| Min/Max +/- allowed | 125.9 |
Standard rating
| Rating | 1288.9 |
| K-factor | 36 |
| Floor | 869.6 |
| Highest | 1384.1 (2024-06-01) |
| Min/Max +/- allowed | 127.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1033.9 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1288.9 |
| K-factor | 36 |
| Floor | 869.6 |
| Highest | 1384.1 (2024-06-01) |
| Min/Max +/- allowed | 127.6 |
Rapid rating
| Rating | 1341.2 |
| K-factor | 36 |
| Floor | 864.6 |
| Highest | 1379.3 (2023-05-01) |
| Min/Max +/- allowed | 128.4 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1087.5 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1341.2 |
| K-factor | 36 |
| Floor | 864.6 |
| Highest | 1379.3 (2023-05-01) |
| Min/Max +/- allowed | 128.4 |
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 | Laerskool Welgemoed Rapid 2024 (U14) | Rapid | 2024-10-19 | 2024-10-19 | Cape Town (WCT) | 6 | 1337 | 6 | 3 | 1379.1 | 0 | Details |
| 2 | Chess Elevation Series - October 2024 (Level 3B) | Standard | 2024-10-25 | 2024-10-26 | Cape Town (WCT) | 5 | 1337 | 5 | 1 | 1047.9 | 0 | Details |
| 3 | 2nd Young Minds Classic 2024 (Intermediate) | Standard | 2024-08-10 | 2024-08-11 | Cape Town (WCT) | 5 | 1379 | 5 | 2 | 1160.6 | 0 | Details |
| 4 | Cape Town Chess Federation Closed Chess Championships 2024 (U14) | Standard | 2024-06-15 | 2024-06-16 | Cape Town (WCT) | 6 | 1374.6 | 6 | 3 | 1407.8 | 0 | Details |
| 5 | Steinitz Chess Festival 2024 (U14) | Rapid | 2024-05-11 | 2024-05-11 | Cape Town (WCT) | 5 | 1369.1 | 5 | 2.5 | 1285.2 | 0 | Details |
| 6 | Western Cape PS Individuals Championship 2024 (U13 Boys) | Standard | 2024-05-04 | 2024-05-05 | West Coast (WCU) | 6 | 1369.1 | 6 | 3 | 1432.6 | 0 | Details |
| 7 | Cape Town Metro Schools Chess Closed Individuals 2024 (U13 Boys) | Standard | 2024-03-02 | 2024-03-03 | Cape Town (WCT) | 6 | 1315.5 | 6 | 4 | 1540 | 0 | Details |
| 8 | CT Metro Central District Schools Chess Individuals Trials 2024 (U13 Boys) | Standard | 2024-02-03 | 2024-02-03 | Cape Town (WCT) | 5 | 1291.8 | 5 | 3 | 1349.9 | 0 | Details |
| 9 | Cape of Good Hope Open Chess Tournament 2024 (Intermediate) | Standard | 2024-02-17 | 2024-02-17 | Cape Town (WCT) | 6 | 1291.8 | 6 | 3 | 1361.3 | 0 | Details |
| 10 | Western Cape Closed Championship 2023 (U12) | Rapid | 2023-09-23 | 2023-09-23 | Cape Town (WCT) | 6 | 1268.3 | 6 | 4 | 1439.8 | 0 | Details |
| 11 | CW Top Schools 2023 (Intermediate) | Standard | 2023-08-12 | 2023-08-12 | West Coast (WCU) | 5 | 1269.5 | 4 | 2 | 1258.6 | 0 | Details |
| 12 | WP Closed 2023 (U12) | Standard | 2023-06-16 | 2023-06-17 | Cape Town (WCT) | 6 | 1268 | 6 | 3 | 1307.1 | 0 | Details |
| 13 | GPCA Rapid 2023 (Advanced) | Rapid | 2023-06-24 | 2023-06-24 | Cape Town (WCT) | 7 | 1268 | 7 | 3 | 1218.3 | 0 | Details |
| 14 | Steinitz Open 2023 (U12) | Rapid | 2023-05-27 | 2023-05-27 | Cape Town (WCT) | 5 | 1237 | 5 | 4 | 1555.7 | 0 | Details |
| 15 | Casuarina International 2023 (Rapid) | Rapid | 2023-03-11 | 2023-03-12 | Cape Town (WCT) | 6 | 1249.3 | 6 | 2 | 1311.9 | 0 | Details |
| 16 | Cape Town Open 2023 (U12) | Rapid | 2023-03-25 | 2023-03-25 | Cape Town (WCT) | 6 | 1249.3 | 6 | 3.5 | 1316.6 | 0 | Details |
| 17 | Cape Town Metro Schools Chess Closed Individuals 2023 (U11 Boys) | Standard | 2023-03-03 | 2023-03-04 | Cape Town (WCT) | 6 | 1249.3 | 6 | 2 | 1100.4 | 0 | Details |
| 18 | Central District School Trials 2023 (U11 Boys) | Standard | 2023-02-03 | 2023-02-04 | Cape Town (WCT) | 6 | 1168.5 | 6 | 4 | 1369.5 | 0 | Details |
| 19 | Laerskool Welgemoed Rapid 2023 (U12) | Rapid | 2023-02-11 | 2023-02-11 | Cape Town (WCT) | 6 | 1168.5 | 6 | 4.5 | 1462.8 | 0 | Details |
| 20 | Cape of Good Hope Open 2023 (U12) | Rapid | 2023-01-28 | 2023-01-28 | Cape Town (WCT) | 6 | 1167.3 | 6 | 2 | 1179.1 | 0 | Details |
| 21 | Metro Rapid 2022 (U11 Boys) | Rapid | 2022-10-22 | 2022-10-22 | Cape Town (WCT) | 5 | 1180.5 | 5 | 3 | 1373.2 | 0 | Details |
| 22 | 2022 Western Province Club League (D) | Standard | 2022-08-27 | 2022-10-01 | Cape Town (WCT) | 7 | 1180.5 | 3 | 0 | 818 | 0 | Details |
| 23 | 2022 Western Province Club League (Junior) | Standard | 2022-08-27 | 2022-09-17 | Cape Town (WCT) | 7 | 1190.6 | 2 | 0.5 | 932.2 | 0 | Details |
| 24 | Western Cape Closed Championship 2022 (U12) | Standard | 2022-09-24 | 2022-09-24 | Cape Winelands (WCW) | 5 | 1190.6 | 5 | 2.5 | 1235.9 | 0 | Details |
| 25 | WP Closed 2022 (U12) | Standard | 2022-06-16 | 2022-06-16 | Cape Town (WCT) | 6 | 1188.2 | 6 | 2.5 | 1169.8 | 0 | Details |
| 26 | Stellenberg Chess Championship 2022 (U12) | Rapid | 2022-06-25 | 2022-06-25 | Cape Town (WCT) | 6 | 1188.2 | 6 | 3 | 1232.5 | 0 | Details |
| 27 | CTCA Rapid Masters @ Kraaifontein Library 2022 (Junior) | Rapid | 2022-05-14 | 2022-05-14 | Cape Town (WCT) | 6 | 1181.2 | 6 | 3 | 1253.3 | 0 | Details |
| 28 | Metro WP Schools Chess Trials 2022 (U11 Boys) | Standard | 2022-04-22 | 2022-04-23 | Cape Town (WCT) | 6 | 1202.4 | 6 | 2 | 1101.5 | 0 | Details |
| 29 | 2022 Central District Individual Trials (U11) | Rapid | 2022-03-05 | 2022-03-05 | Cape Town (WCT) | 5 | 1187.3 | 5 | 3 | 1286.4 | 0 | Details |
| 30 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U12) | Rapid | 2022-02-19 | 2022-02-19 | Cape Town (WCT) | 5 | 1200 | 5 | 2 | 1102.2 | 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 | 163 |
| Wins | 77 |
| Draws | 6 |
| Losses | 80 |
| White | 84 |
| Black | 79 |
| White wins | 38 |
| Black wins | 39 |
| Score | 80 |
| Percent | 49.1 |
| Dp | -7.8 |
| AOR | 1290.4 |
| Performance | 1282.6 |
Rankings (Main)
| National | |
| Overall | 5173 |
| Gender | 4305 |
| Age group | 831 |
| Gender/Age | 643 |
| Provincial | |
| Overall | 1573 |
| Gender | 1241 |
| Age group | 252 |
| Gender/Age | 181 |
| Regional | |
| Overall | 736 |
| Gender | 617 |
| Age group | 95 |
| Gender/Age | 69 |
Rankings (Standard)
| National | |
| Overall | 5701 |
| Gender | 4658 |
| Age group | 979 |
| Gender/Age | 753 |
| Provincial | |
| Overall | 1631 |
| Gender | 1255 |
| Age group | 270 |
| Gender/Age | 193 |
| Regional | |
| Overall | 758 |
| Gender | 614 |
| Age group | 99 |
| Gender/Age | 71 |
Rankings (Rapid)
| National | |
| Overall | 1342 |
| Gender | 1132 |
| Age group | 263 |
| Gender/Age | 199 |
| Provincial | |
| Overall | 643 |
| Gender | 528 |
| Age group | 123 |
| Gender/Age | 91 |
| Regional | |
| Overall | 301 |
| Gender | 266 |
| Age group | 52 |
| Gender/Age | 43 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (History)
| Games | 163 |
| Score | 80 |
| Percent | 49.1 |
| Aor | 1290.4 |
| Dp | -7.8 |
| Prat | 1282.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | He, Z (Zonghan) | 5 | 2 | 3 | Laerskool Welgemoed Rapid 2023 (U12) | Laerskool Welgemoed Rapid 2024 (U14) | Details |
| Overall | 2 | Priestley, L (Liam) | 3 | 2 | 1 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U12) | Cape Town Metro Schools Chess Closed Individuals 2024 (U13 Boys) | Details |
| Overall | 3 | Braaf, J (Jordan) | 3 | 2 | 1 | CTCA Rapid Masters @ Kraaifontein Library 2022 (Junior) | Laerskool Welgemoed Rapid 2024 (U14) | Details |
| Overall | 4 | Guo, A (Aleks) | 3 | 2 | 1 | Metro WP Schools Chess Trials 2022 (U11 Boys) | Cape of Good Hope Open 2023 (U12) | Details |
| Overall | 5 | Damane, L (Lukhanyo) | 3 | 3 | 0 | Central District School Trials 2023 (U11 Boys) | WP Closed 2023 (U12) | Details |
| Standard | 1 | Damane, L (Lukhanyo) | 3 | 3 | 0 | Central District School Trials 2023 (U11 Boys) | WP Closed 2023 (U12) | Details |
| Standard | 2 | Louis, C (Carl) | 2 | 0 | 2 | Central District School Trials 2023 (U11 Boys) | Cape Town Metro Schools Chess Closed Individuals 2023 (U11 Boys) | Details |
| Standard | 3 | Shapiro, M (Matthew) | 2 | 2 | 0 | CT Metro Central District Schools Chess Individuals Trials 2024 (U13 Boys) | Cape Town Metro Schools Chess Closed Individuals 2024 (U13 Boys) | Details |
| Standard | 4 | Roberts, E (Ethan) | 2 | 1 | 1 | WP Closed 2022 (U12) | Western Cape Closed Championship 2022 (U12) | Details |
| Standard | 5 | Rall, L (Lian) | 2 | 0 | 2 | Metro WP Schools Chess Trials 2022 (U11 Boys) | Western Cape Closed Championship 2022 (U12) | Details |
| Rapid | 1 | He, Z (Zonghan) | 4 | 1 | 3 | Laerskool Welgemoed Rapid 2023 (U12) | Laerskool Welgemoed Rapid 2024 (U14) | Details |
| Rapid | 2 | Braaf, J (Jordan) | 3 | 2 | 1 | CTCA Rapid Masters @ Kraaifontein Library 2022 (Junior) | Laerskool Welgemoed Rapid 2024 (U14) | Details |
| Rapid | 3 | Grove, T (Tyler) | 2 | 1 | 1 | Laerskool Welgemoed Rapid 2023 (U12) | Western Cape Closed Championship 2023 (U12) | Details |
| Rapid | 4 | Priestley, L (Liam) | 2 | 2 | 0 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U12) | Stellenberg Chess Championship 2022 (U12) | Details |
| Rapid | 5 | Fourie, R (Ruan) | 2 | 2 | 0 | Stellenberg Chess Championship 2022 (U12) | Steinitz Open 2023 (U12) | Details |