PLAYER PAGE
Janko Weideman
1120134372Cape Town (WCT)Personal
Main rating
| Rating | 1790.1 |
| K-factor | 24 |
| Floor | 1339.2 |
| Highest | 1842.7 (2025-11-01) |
| Min/Max +/- allowed | 66 |
| Rating Change () | |
| Games | 6 |
| Score | 4.5 |
| We | 4.81 |
| SWe | -0.25 |
| Temp +/- | -6.1 |
| Penalties | 0 |
| Weight perform | 1738.9 |
| Final +/- | -6.1 |
| New Rating () | |
| Rating | 1784 |
| K-factor | 24 |
| Floor | 1339.2 |
| Highest | 1842.7 (2025-11-01) |
| Min/Max +/- allowed | 66.4 |
Standard rating
| Rating | 1774.6 |
| K-factor | 24 |
| Floor | 1307 |
| Highest | 1830.9 (2025-11-01) |
| Min/Max +/- allowed | 67.5 |
| Rating Change () | |
| Games | 6 |
| Score | 4.5 |
| We | 4.74 |
| SWe | -0.24 |
| Temp +/- | -5.7 |
| Penalties | 0 |
| Weight perform | 1722.2 |
| Final +/- | -5.7 |
| New Rating () | |
| Rating | 1768.9 |
| K-factor | 24 |
| Floor | 1307 |
| Highest | 1830.9 (2025-11-01) |
| Min/Max +/- allowed | 67.5 |
Rapid rating
| Rating | 1770.7 |
| K-factor | 28 |
| Floor | 1270.7 |
| Highest | 1770.7 (2026-01-01) |
| Min/Max +/- allowed | 73.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1809.8 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1770.7 |
| K-factor | 28 |
| Floor | 1270.7 |
| Highest | 1770.7 (2026-01-01) |
| Min/Max +/- allowed | 73.5 |
Blitz rating
| Rating | 1283.2 |
| K-factor | 36 |
| Floor | 783.2 |
| Highest | 1283.2 (2025-05-05) |
| Min/Max +/- allowed | 147.3 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1283.2 |
| K-factor | 36 |
| Floor | 783.2 |
| Highest | 1283.2 (2025-05-05) |
| Min/Max +/- allowed | 147.3 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | CT Metro North Schools Chess Individual Trials 2026 (U15 Boys) | Standard | 2026-02-14 | 2026-02-15 | Cape Town | 6 | 1790.1 | 6 | 4.5 | 1714.2 | -6.1 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | COGH 2026 (Championship) | Standard | 2026-01-31 | 2026-02-01 | Cape Town (WCT) | 6 | 1778 | 6 | 2.5 | 1794.7 | 0 | Details |
| 2 | Chess Elevation Series 2 2026 (Level 6) | Standard | 2026-01-23 | 2026-01-23 | Cape Town (WCT) | 5 | 1787.3 | 4 | 1 | 1686.7 | 0 | Details |
| 3 | Helderberg Chess Club Open 2026 (A) | Standard | 2026-01-17 | 2026-01-17 | Cape Town (WCT) | 5 | 1787.3 | 5 | 4 | 1869.8 | 0 | Details |
| 4 | Six Gun Grill Summer Sport Festival Chess Championships 2025 (Individual U15) | Rapid | 2025-12-09 | 2025-12-09 | Cape Winelands (WCW) | 5 | 1823.6 | 5 | 5 | 1888.4 | 0 | Details |
| 5 | Six Gun Grill Summer Sport Festival Chess Championships 2025 (Team U15+U18) | Rapid | 2025-12-08 | 2025-12-08 | Cape Winelands (WCW) | 5 | 1823.6 | 5 | 5 | 1866.7 | 0 | Details |
| 6 | Kraaifontein Open 2025 (Championship) | Standard | 2025-12-06 | 2025-12-07 | Cape Town (WCT) | 5 | 1823.6 | 5 | 1.5 | 1538.6 | 0 | Details |
| 7 | Cape Town Chess Federation Club League 2025 (A) | Classical | 2025-07-26 | 2025-09-27 | Cape Town (WCT) | 11 | 1839.2 | 10 | 3 | 1534.5 | 0 | Details |
| 8 | Paarl Boys' High School Chess Festival 2025 (Primary Schools) | Standard | 2025-10-17 | 2025-10-18 | Cape Winelands (WCW) | 6 | 1839.2 | 6 | 5.5 | 1934.7 | 0 | Details |
| 9 | UCT Open Chess Championship 2025 (Championship) | Standard | 2025-10-10 | 2025-10-12 | Cape Town (WCT) | 6 | 1839.2 | 6 | 3.5 | 2083.5 | 0 | Details |
| 10 | Cape Town Metro North Top Schools 2025 (U13) | Standard | 2025-08-01 | 2025-08-02 | Cape Town (WCT) | 5 | 1834.4 | 5 | 5 | 1750.7 | 0 | Details |
| 11 | 4th Curro Durbanville Rapid Open 2025 (Championship) | Rapid | 2025-07-19 | 2025-07-19 | Cape Town (WCT) | 7 | 1821 | 7 | 3.5 | 1961.4 | 0 | Details |
| 12 | Western Cape Schools Individual Championship 2025 (U13 Boys) | Standard | 2025-05-17 | 2025-05-18 | Cape Winelands (WCW) | 6 | 1818.5 | 6 | 5 | 1833.8 | 0 | Details |
| 13 | Hermanus Chess Club Open 2025 (Championship) | Rapid | 2025-04-12 | 2025-04-12 | Overberg (WOS) | 7 | 1778.4 | 7 | 3.5 | 1939.8 | 0 | Details |
| 14 | Hermanus Chess Club Open 2025 (Blitz) | Blitz | 2025-04-11 | 2025-04-11 | Overberg (WOS) | 9 | 1778.4 | 9 | 6.5 | 1934.5 | 0 | Details |
| 15 | South African Junior Closed Chess Championships 2025 (U14 Open) | Classical | 2025-03-31 | 2025-04-05 | Cape Winelands (WCW) | 9 | 1778.4 | 9 | 6 | 1827.4 | 0 | Details |
| 16 | Cape Town Open Chess Festival 2025 (A) | Standard | 2025-03-22 | 2025-03-23 | Cape Town (WCT) | 6 | 1737.6 | 6 | 3 | 1784.1 | 0 | Details |
| 17 | Western Cape Closed 2025 (A) | Standard | 2025-03-08 | 2025-03-09 | Cape Town (WCT) | 6 | 1737.6 | 6 | 2.5 | 1824.9 | 0 | Details |
| 18 | CT Metro Schools Individual Closed 2025 (U13 Open) | Standard | 2025-03-01 | 2025-03-02 | Cape Town (WCT) | 6 | 1737.6 | 6 | 5 | 1830.2 | 0 | Details |
| 19 | Cape of Good Hope Open 2025 (Championship) | Standard | 2025-02-22 | 2025-02-23 | Cape Town (WCT) | 6 | 1710.3 | 5 | 1.5 | 1700.1 | 0 | Details |
| 20 | Laerskool Welgemoed Rapid 2025 (U14) | Rapid | 2025-02-15 | 2025-02-15 | Cape Town (WCT) | 6 | 1710.3 | 6 | 6 | 1786.4 | 0 | Details |
| 21 | CT Metro North Schools Chess Individual Trials 2025 (U13 Open) | Standard | 2025-02-08 | 2025-02-09 | Cape Town (WCT) | 6 | 1710.3 | 6 | 5.5 | 1806.8 | 0 | Details |
| 22 | Cape Town Masters Challenge 2025 (Advanced) | Classical | 2025-01-06 | 2025-01-11 | Cape Town (WCT) | 9 | 1670.4 | 9 | 7 | 1808 | 0 | Details |
| 23 | 2nd Strategize To Win Round-Robin Tournament ACL 2024 (A) | Standard | 2024-12-07 | 2024-12-07 | Cape Town (WCT) | 5 | 1673.6 | 5 | 2 | 1644.6 | 0 | Details |
| 24 | Paarl Boys' High Chess Festival 2024 (Elite) | Standard | 2024-10-04 | 2024-10-05 | Cape Winelands (WCW) | 6 | 1622 | 6 | 6 | 1935.1 | 0 | Details |
| 25 | Laerskool Welgemoed Rapid 2024 (U14) | Rapid | 2024-10-19 | 2024-10-19 | Cape Town (WCT) | 6 | 1597.2 | 6 | 4 | 1638.2 | 0 | Details |
| 26 | Western Cape Club Championship 2024 (Tier 2) | Standard | 2024-10-25 | 2024-10-27 | Cape Town (WCT) | 5 | 1597.2 | 5 | 3 | 1636.8 | 0 | Details |
| 27 | UCT Open Chess Championship 2024 (Advanced) | Standard | 2024-10-12 | 2024-10-13 | Cape Town (WCT) | 5 | 1597.2 | 5 | 4 | 1691.1 | 0 | Details |
| 28 | CT League 2024 (A) | Classical | 2024-07-20 | 2024-09-07 | Cape Town (WCT) | 11 | 1578.8 | 7 | 3.5 | 1572 | 0 | Details |
| 29 | CT League 2024 (D-Playoffs) | Standard | 2024-09-07 | 2024-09-08 | Cape Town (WCT) | 5 | 1578.8 | 3 | 1 | 1492.5 | 0 | Details |
| 30 | Western Cape Top Schools Championship 2024 (U13 Mixed) | Standard | 2024-08-30 | 2024-09-01 | Eden (WEG) | 6 | 1578.8 | 6 | 4.5 | 1715.8 | 0 | Details |
| 31 | 2nd Young Minds Classic 2024 (Intermediate) | Standard | 2024-08-10 | 2024-08-11 | Cape Town (WCT) | 5 | 1617.2 | 5 | 3 | 1363.1 | 0 | Details |
| 32 | CT District North Top Schools 2024 (U13 Mixed) | Rapid | 2024-07-27 | 2024-07-27 | Cape Town (WCT) | 5 | 1611 | 5 | 5 | 1681.7 | 0 | Details |
| 33 | Curro Durbanville Chess Rapid Open 2024 (Championship) | Rapid | 2024-07-13 | 2024-07-13 | Cape Town (WCT) | 6 | 1611 | 6 | 3 | 1596.4 | 0 | Details |
| 34 | 2024 African Youth Chess Championship | Classical | 2024-06-16 | 2024-06-22 | Tshwane (GTP) | 9 | 1521.1 | 9 | 6 | 1796.5 | 0 | Details |
| 35 | Steinitz Chess Festival 2024 (Open) | Standard | 2024-05-10 | 2024-05-12 | Cape Town (WCT) | 6 | 1426 | 6 | 3.5 | 1494.5 | 0 | Details |
| 36 | South African Junior Closed Chess Championship 2024 (U12 Open) | Classical | 2024-04-27 | 2024-05-01 | Ekurhuleni (GE) | 9 | 1426 | 9 | 6 | 1670.9 | 0 | Details |
| 37 | Cape Town Open Rapid Chess Championship 2024 (Open) | Rapid | 2024-03-17 | 2024-03-17 | Cape Town (WCT) | 6 | 1428.4 | 6 | 3.5 | 1407.1 | 0 | Details |
| 38 | Cape Town Masters Challenge 2024 (Advanced) | Classical | 2024-01-03 | 2024-01-07 | Cape Town (WCT) | 7 | 1436.7 | 7 | 2.5 | 1400.7 | 0 | Details |
| 39 | Kraaifontein Open 2023 (Adanced) | Standard | 2023-12-09 | 2023-12-10 | Cape Town (WCT) | 6 | 1423.9 | 6 | 3 | 1490.9 | 0 | Details |
| 40 | Chas Everitt and MHI Attorneys Rapid 2023 (B) | Rapid | 2023-11-04 | 2023-11-04 | Cape Town (WCT) | 6 | 1403.5 | 6 | 4.5 | 1581.9 | 0 | Details |
| 41 | Bonnievale Open Rapid 2023 (Advanced) | Rapid | 2023-10-21 | 2023-10-21 | Cape Winelands (WCW) | 6 | 1405.9 | 6 | 2 | 1385.7 | 0 | Details |
| 42 | Western Cape Closed Championship 2023 (C) | Standard | 2023-09-24 | 2023-09-25 | Cape Town (WCT) | 6 | 1433.2 | 6 | 3 | 1338.5 | 0 | Details |
| 43 | Western Cape Closed Championship 2023 (Blitz) | Blitz | 2023-09-23 | 2023-09-25 | Cape Town (WCT) | 7 | 1433.2 | 7 | 2 | 1361.8 | 0 | Details |
| 44 | WP Club League 2023 (D1) | Standard | 2023-07-29 | 2023-08-19 | Cape Town (WCT) | 6 | 1440.2 | 3 | 2 | 1353.1 | 0 | Details |
| 45 | Curro Durbanville Chess Open Rapid 2023 (Advanced) | Rapid | 2023-07-15 | 2023-07-15 | Cape Town (WCT) | 6 | 1497.9 | 6 | 2 | 1361.4 | 0 | Details |
| 46 | CT Metro District North Top Schools Chess 2023 (U11 Mixed) | Rapid | 2023-07-29 | 2023-07-29 | Cape Town (WCT) | 5 | 1497.9 | 3 | 2 | 1450 | 0 | Details |
| 47 | Cape Winelands Open 2023 (Advanced) | Standard | 2023-07-22 | 2023-07-23 | Cape Winelands (WCW) | 6 | 1497.9 | 6 | 2 | 1327.1 | 0 | Details |
| 48 | WP Closed 2023 (U12) | Standard | 2023-06-16 | 2023-06-17 | Cape Town (WCT) | 6 | 1457.3 | 6 | 5 | 1663 | 0 | Details |
| 49 | Western Cape PS Individuals 2023 (U11 Boys) | Standard | 2023-05-05 | 2023-05-06 | Cape Town (WCT) | 6 | 1401.8 | 6 | 5.5 | 1734.8 | 0 | Details |
| 50 | Steinitz Open 2023 (A+B) | Standard | 2023-05-26 | 2023-05-28 | Cape Town (WCT) | 6 | 1401.8 | 6 | 2 | 1356.9 | 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 | 21 |
| Wins | 10 |
| Draws | 4 |
| Losses | 7 |
| White | 10 |
| Black | 11 |
| White wins | 5 |
| Black wins | 5 |
| Score | 12 |
| Percent | 57.1 |
| Dp | 60.7 |
| AOR | 1708.3 |
| Performance | 1769 |
Game statistics (History)
| Games | 489 |
| Wins | 277 |
| Draws | 62 |
| Losses | 150 |
| White | 247 |
| Black | 242 |
| White wins | 138 |
| Black wins | 139 |
| Score | 308 |
| Percent | 63 |
| Dp | 110.4 |
| AOR | 1473.1 |
| Performance | 1583.5 |
Rankings (Main)
| National | |
| Overall | 254 |
| Gender | 243 |
| Age group | 14 |
| Gender/Age | 13 |
| Provincial | |
| Overall | 82 |
| Gender | 81 |
| Age group | 4 |
| Gender/Age | 4 |
| Regional | |
| Overall | 68 |
| Gender | 67 |
| Age group | 4 |
| Gender/Age | 4 |
Rankings (Standard)
| National | |
| Overall | 266 |
| Gender | 255 |
| Age group | 15 |
| Gender/Age | 14 |
| Provincial | |
| Overall | 82 |
| Gender | 80 |
| Age group | 5 |
| Gender/Age | 5 |
| Regional | |
| Overall | 69 |
| Gender | 68 |
| Age group | 5 |
| Gender/Age | 5 |
Rankings (Rapid)
| National | |
| Overall | 58 |
| Gender | 57 |
| Age group | 2 |
| Gender/Age | 2 |
| Provincial | |
| Overall | 28 |
| Gender | 27 |
| Age group | 2 |
| Gender/Age | 2 |
| Regional | |
| Overall | 26 |
| Gender | 25 |
| Age group | 2 |
| Gender/Age | 2 |
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 | 21 |
| Score | 12 |
| Percent | 57.1 |
| Aor | 1708.3 |
| Dp | 60.7 |
| Prat | 1769 |
Performance (12 months)
| Games | 113 |
| Score | 70.5 |
| Percent | 62.4 |
| Aor | 1714.6 |
| Dp | 105.3 |
| Prat | 1819.9 |
Performance (History)
| Games | 489 |
| Score | 308 |
| Percent | 63 |
| Aor | 1473.1 |
| Dp | 110.4 |
| Prat | 1583.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Singh, S (Shaurya) | 17 | 11 | 6 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U12) | CT Metro North Schools Chess Individual Trials 2026 (U15 Boys) | Details |
| Overall | 2 | Shapiro, M (Matthew) | 8 | 4 | 4 | 2022 Cape Of Good Hope Open (U12) | Helderberg Chess Club Open 2026 (A) | Details |
| Overall | 3 | Salimu, C (Chase) | 6 | 2 | 4 | District North 2022 (U11) | 4th Curro Durbanville Rapid Open 2025 (Championship) | Details |
| Overall | 4 | Maruma, KB (Kamogelo) | 6 | 4 | 2 | Western Cape Schools 2022 (U11 Boys) | Western Cape Top Schools Championship 2024 (U13 Mixed) | Details |
| Overall | 5 | Strydom, H (Henroux) | 5 | 3 | 2 | 2022 Cape Of Good Hope Open (U12) | CT Metro North Schools Chess Individual Trials 2026 (U15 Boys) | Details |
| Standard | 1 | Singh, S (Shaurya) | 14 | 9 | 5 | South African Open 2022 (U12) | CT Metro North Schools Chess Individual Trials 2026 (U15 Boys) | Details |
| Standard | 2 | Shapiro, M (Matthew) | 7 | 4 | 3 | 2022 Cape Of Good Hope Open (U12) | Helderberg Chess Club Open 2026 (A) | Details |
| Standard | 3 | Hagen, S (Sophia) | 4 | 1 | 3 | 2022 Cape Of Good Hope Open (U12) | Paarl Boys' High School Chess Festival 2025 (Primary Schools) | Details |
| Standard | 4 | Wilson, EM (Emlyn Marissa) | 3 | 2 | 1 | Kraaifontein Open 2022 (U10) | Kraaifontein Open 2022 (Intermediate) | Details |
| Standard | 5 | Muller, H (Helgard) | 3 | 2 | 1 | Western Cape Schools 2022 (U11 Boys) | CT Metro North Schools Chess Individual Trials 2026 (U15 Boys) | Details |
| Rapid | 1 | Salimu, C (Chase) | 3 | 0 | 3 | District North 2022 (U11) | 4th Curro Durbanville Rapid Open 2025 (Championship) | Details |
| Rapid | 2 | Maruma, KB (Kamogelo) | 3 | 2 | 1 | Curro Durbanville Chess Open Rapid 2022 (U12) | Curro Durbanville Chess Rapid Open 2024 (Championship) | Details |
| Rapid | 3 | Singh, S (Shaurya) | 2 | 2 | 0 | Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U12) | 4th Curro Durbanville Rapid Open 2025 (Championship) | Details |
| Rapid | 4 | Rogov, T (Timofey) | 2 | 0 | 2 | Curro Durbanville Chess Rapid Open 2024 (Championship) | 4th Curro Durbanville Rapid Open 2025 (Championship) | Details |
| Rapid | 5 | Mnyasta, T (Tezihano) | 2 | 2 | 0 | Casuarina International 2023 (Rapid) | Hermanus Chess Club Open 2025 (Championship) | Details |
| Blitz | 1 | Kleinsmidt, CC (Cherwin Chanson) | 2 | 2 | 0 | Casuarina International 2023 (Blitz) | Hermanus Chess Club Open 2025 (Blitz) | Details |