PLAYER PAGE
Aiden Sedeman
1100192698West Coast (WCU)Personal
Main rating
| Rating | 1591 |
| K-factor | 32 |
| Floor | 1091 |
| Highest | 1591 (2026-07-01) |
| Min/Max +/- allowed | 95 |
| Rating Change () | |
| Games | 7 |
| Score | 4.5 |
| We | 4.21 |
| SWe | 0.29 |
| Temp +/- | 9.4 |
| Penalties | 0 |
| Weight perform | 1562 |
| Final +/- | +9.4 |
| New Rating () | |
| Rating | 1600.4 |
| K-factor | 28 |
| Floor | 1100.4 |
| Highest | 1600.4 (2026-07-01) |
| Min/Max +/- allowed | 93.7 |
Standard rating
| Rating | 1560.9 |
| K-factor | 32 |
| Floor | 1060.9 |
| Highest | 1560.9 (2026-06-01) |
| Min/Max +/- allowed | 99.2 |
| Rating Change () | |
| Games | 7 |
| Score | 4.5 |
| We | 4.03 |
| SWe | 0.47 |
| Temp +/- | 15.1 |
| Penalties | 0 |
| Weight perform | 1563.3 |
| Final +/- | +15.1 |
| New Rating () | |
| Rating | 1575.9 |
| K-factor | 32 |
| Floor | 1075.9 |
| Highest | 1575.9 (2026-07-01) |
| Min/Max +/- allowed | 97.1 |
Rapid rating
| Rating | 1598.9 |
| K-factor | 32 |
| Floor | 1028.5 |
| Highest | 1618.9 (2024-04-01) |
| Min/Max +/- allowed | 91.3 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1578.5 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1598.9 |
| K-factor | 32 |
| Floor | 1028.5 |
| Highest | 1618.9 (2024-04-01) |
| Min/Max +/- allowed | 91.3 |
Blitz rating
| Rating | 1356.8 |
| K-factor | 36 |
| Floor | 856.8 |
| Highest | 1446 (2024-05-01) |
| Min/Max +/- allowed | 116.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1356.8 |
| K-factor | 36 |
| Floor | 856.8 |
| Highest | 1446 (2024-05-01) |
| Min/Max +/- allowed | 116.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | South African Open Championship 2026 (U17 Boys) | Classical | 2026-07-02 | 2026-07-05 | Cape Town (WCT) | 7 | 1591 | 7 | 4.5 | 1573.4 | 9.4 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Lower West Coast Top Schools 2026 (U17) | Rapid | 2026-05-30 | 2026-05-30 | West Coast (WCU) | 5 | 1588.2 | 5 | 4 | 1603.2 | 2.8 | Details |
| 2 | 2026 WCSC HS Individual Championship (U18 Boys) | Standard | 2026-05-02 | 2026-05-03 | Eden (WEG) | 6 | 1576.2 | 6 | 4 | 1639.2 | 12 | Details |
| 3 | Freedom Day Rapid 2026 (General) | Rapid | 2026-04-26 | 2026-04-26 | West Coast (WCU) | 5 | 1556.5 | 5 | 5 | 1755.9 | 19.7 | Details |
| 4 | West Coast Schools Prestige Individuals Championships 2026 (U18 Boys) | Standard | 2026-02-28 | 2026-03-07 | West Coast (WCU) | 6 | 1540.6 | 6 | 4.5 | 1623.8 | 15.8 | Details |
| 5 | Lower West Coast Schools Prestige Individuals Championship 2026 (U18 Open) | Rapid | 2026-02-14 | 2026-02-14 | West Coast (WCU) | 5 | 1532.5 | 5 | 4 | 1527.7 | 0.2 | Details |
| 6 | West Coast League 2026 (B) | Rapid | 2026-02-07 | 2026-02-07 | West Coast (WCU) | 5 | 1532.5 | 4 | 2.5 | 1618.3 | 3.1 | Details |
| 7 | Basil Ellman Annual Rapid 2025 (Seniors) | Rapid | 2025-09-20 | 2025-09-20 | West Coast (WCU) | 5 | 1445.2 | 5 | 4 | 1614.6 | 13.1 | Details |
| 8 | Western Cape Schools - Top Schools 2025 (U15) | Standard | 2025-09-06 | 2025-09-07 | Overberg (WOS) | 6 | 1445.2 | 6 | 6 | 1743 | 35 | Details |
| 9 | Rooibos Open 2025 (Elite) | Standard | 2025-08-30 | 2025-08-30 | West Coast (WCU) | 5 | 1445.2 | 5 | 3 | 1502.8 | 6.3 | Details |
| 10 | Pedro Booyse Top Schools 2025 (U15) | Rapid | 2025-08-23 | 2025-08-23 | West Coast (WCU) | 6 | 1411.6 | 6 | 4.5 | 1514.3 | 8.8 | Details |
| 11 | Western Cape Women’s Championship 2025 (Advanced) | Standard | 2025-08-08 | 2025-08-10 | West Coast (WCU) | 6 | 1411.6 | 0 | 0 | 0 | 0 | Details |
| 12 | West Coast College Inter Campus 2025 | Rapid | 2025-07-26 | 2025-07-26 | West Coast (WCU) | 5 | 1411.6 | 5 | 5 | 1622.5 | 12.3 | Details |
| 13 | Lower West Coast Top Schools 2025 (U15) | Rapid | 2025-06-14 | 2025-06-14 | West Coast (WCU) | 5 | 1405.7 | 4 | 3 | 1426 | 0.2 | Details |
| 14 | Deep Blue Open 2025 (A) | Standard | 2025-06-21 | 2025-06-21 | West Coast (WCU) | 5 | 1405.7 | 4 | 1 | 1451.2 | 3.4 | Details |
| 15 | West Coast And Mykonos Open 2025 (Open) | Standard | 2025-05-02 | 2025-05-04 | West Coast (WCU) | 6 | 1416.9 | 6 | 3 | 1363.6 | -6.9 | Details |
| 16 | Western Cape Schools Individual Championship 2025 (U15 Boys) | Standard | 2025-04-26 | 2025-04-27 | West Coast (WCU) | 6 | 1424.1 | 6 | 3 | 1385.6 | -4.5 | Details |
| 17 | West Coast Schools Chess Prestige 2025 (U15 Boys) | Standard | 2025-03-08 | 2025-03-08 | West Coast (WCU) | 6 | 1405.2 | 6 | 4 | 1517.4 | 11.8 | Details |
| 18 | Lower West Coast Prestige 2025 (U15 Boys) | Rapid | 2025-02-22 | 2025-02-22 | West Coast (WCU) | 5 | 1396.1 | 5 | 4 | 1472.2 | 5.1 | Details |
| 19 | Lambertsbay Chess Club Crayfish Classic 2024 | Standard | 2024-12-16 | 2024-12-16 | West Coast (WCU) | 5 | 1353.5 | 5 | 4 | 1587.9 | 23.9 | Details |
| 20 | The Rooibos Open 2024 (Elite) | Rapid | 2024-08-24 | 2024-08-24 | West Coast (WCU) | 5 | 1349.5 | 5 | 3 | 1370.2 | 2.2 | Details |
| 21 | Pedro Booyse Top Schools Championships 2024 (U15) | Standard | 2024-07-20 | 2024-07-20 | West Coast (WCU) | 5 | 1340.8 | 3 | 2 | 1414 | 4.8 | Details |
| 22 | Vredendal North CC Open 2024 (Elite) | Rapid | 2024-07-27 | 2024-07-27 | West Coast (WCU) | 5 | 1357.5 | 4 | 1 | 1189 | -9.3 | Details |
| 23 | Lambertsbay Youth Open 2024 (Elite) | Rapid | 2024-06-17 | 2024-06-17 | West Coast (WCU) | 5 | 1366.2 | 5 | 2.5 | 1330.2 | -3.2 | Details |
| 24 | Basil Ellman Annual Rapid 2024 (Elite) | Rapid | 2024-06-08 | 2024-06-08 | West Coast (WCU) | 5 | 1366.2 | 5 | 2 | 1352 | -1.6 | Details |
| 25 | Deep Blue CC May Blitz 2024 | Blitz | 2024-05-22 | 2024-05-22 | West Coast (WCU) | 7 | 1345.6 | 7 | 6 | 1583.5 | 7.2 | Details |
| 26 | Lower West Top Schools 2024 (U15) | Rapid | 2024-05-11 | 2024-05-11 | West Coast (WCU) | 5 | 1345.6 | 2 | 1.5 | 1460.1 | 4.2 | Details |
| 27 | Deep Blue Chess Club April Blitz 2024 | Blitz | 2024-04-24 | 2024-04-24 | West Coast (WCU) | 7 | 1260.6 | 7 | 5 | 1483.3 | 6.7 | Details |
| 28 | Deep Blue Open 2024 (Advanced) | Rapid | 2024-04-13 | 2024-04-13 | West Coast (WCU) | 5 | 1260.6 | 5 | 5 | 1760.6 | 39.1 | Details |
| 29 | Deep Blue March Blitz 2024 | Blitz | 2024-03-27 | 2024-03-27 | West Coast (WCU) | 5 | 1260.6 | 5 | 2.5 | 1311.1 | 1.2 | Details |
| 30 | Western Cape HS Individuals Championship 2024 (U15 Boys) | Standard | 2024-03-21 | 2024-03-22 | Overberg (WOS) | 6 | 1281.8 | 6 | 1.5 | 1181.7 | -11.8 | Details |
| 31 | West Coast Schools Chess Prestige Championships 2024 (U15 Boys) | Rapid | 2024-02-24 | 2024-02-24 | West Coast (WCU) | 5 | 1200 | 5 | 3 | 1396.1 | 14.4 | Details |
| 32 | Lower West Coast Schools Chess Prestige 2024 (U15 Boys) | Rapid | 2024-02-17 | 2024-02-17 | West Coast (WCU) | 5 | 1200 | 5 | 4 | 1573.4 | 26.9 | Details |
Game statistics ( )
| Games | 7 |
| Wins | 4 |
| Draws | 1 |
| Losses | 2 |
| White | 3 |
| Black | 4 |
| White wins | 2 |
| Black wins | 2 |
| Score | 4.5 |
| Percent | 64.3 |
| Dp | 121.4 |
| AOR | 1452 |
| Performance | 1573.4 |
Game statistics ()
| Games | 38 |
| Wins | 26 |
| Draws | 5 |
| Losses | 7 |
| White | 17 |
| Black | 21 |
| White wins | 10 |
| Black wins | 16 |
| Score | 28.5 |
| Percent | 75 |
| Dp | 212.5 |
| AOR | 1405.9 |
| Performance | 1618.4 |
Game statistics (History)
| Games | 165 |
| Wins | 107 |
| Draws | 10 |
| Losses | 48 |
| White | 77 |
| Black | 88 |
| White wins | 47 |
| Black wins | 60 |
| Score | 112 |
| Percent | 67.9 |
| Dp | 152 |
| AOR | 1351.6 |
| Performance | 1503.6 |
Rankings (Main)
| National | |
| Overall | 1144 |
| Gender | 1046 |
| Age group | 122 |
| Gender/Age | 107 |
| Provincial | |
| Overall | 341 |
| Gender | 308 |
| Age group | 36 |
| Gender/Age | 31 |
| Regional | |
| Overall | 13 |
| Gender | 13 |
| Age group | 6 |
| Gender/Age | 6 |
Rankings (Standard)
| National | |
| Overall | 1264 |
| Gender | 1134 |
| Age group | 142 |
| Gender/Age | 123 |
| Provincial | |
| Overall | 372 |
| Gender | 329 |
| Age group | 38 |
| Gender/Age | 32 |
| Regional | |
| Overall | 13 |
| Gender | 12 |
| Age group | 5 |
| Gender/Age | 5 |
Rankings (Rapid)
| National | |
| Overall | 171 |
| Gender | 167 |
| Age group | 18 |
| Gender/Age | 18 |
| Provincial | |
| Overall | 82 |
| Gender | 80 |
| Age group | 11 |
| Gender/Age | 11 |
| Regional | |
| Overall | 9 |
| Gender | 9 |
| Age group | 4 |
| Gender/Age | 4 |
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 | 7 |
| Score | 4.5 |
| Percent | 64.3 |
| Aor | 1452 |
| Dp | 121.4 |
| Prat | 1573.4 |
Performance ()
| Games | 38 |
| Score | 28.5 |
| Percent | 75 |
| Aor | 1405.9 |
| Dp | 212.5 |
| Prat | 1618.4 |
Performance (12 months)
| Games | 60 |
| Score | 46 |
| Percent | 76.7 |
| Aor | 1383.8 |
| Dp | 226.7 |
| Prat | 1610.5 |
Performance (History)
| Games | 165 |
| Score | 112 |
| Percent | 67.9 |
| Aor | 1351.6 |
| Dp | 152 |
| Prat | 1503.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Ellman, A (Anne-Belle) | 6 | 2 | 4 | Deep Blue March Blitz 2024 | Basil Ellman Annual Rapid 2025 (Seniors) | Details |
| Overall | 2 | Elliott, M (Matayo) | 4 | 3 | 1 | Lower West Coast Top Schools 2025 (U15) | Western Cape Schools - Top Schools 2025 (U15) | Details |
| Overall | 3 | Swarts, R (Rudigar) | 4 | 2 | 2 | Lower West Top Schools 2024 (U15) | Lower West Coast Top Schools 2026 (U17) | Details |
| Overall | 4 | Siebritz, N (Noelle) | 4 | 2 | 2 | Deep Blue March Blitz 2024 | Basil Ellman Annual Rapid 2025 (Seniors) | Details |
| Overall | 5 | Siebritz, Y (Yul) | 4 | 0 | 4 | Deep Blue March Blitz 2024 | Basil Ellman Annual Rapid 2024 (Elite) | Details |
| Standard | 1 | Lu, DTX (Daniel Ting Xu) | 2 | 1 | 1 | West Coast And Mykonos Open 2025 (Open) | West Coast Schools Prestige Individuals Championships 2026 (U18 Boys) | Details |
| Standard | 2 | Swarts, R (Rudigar) | 2 | 1 | 1 | Pedro Booyse Top Schools Championships 2024 (U15) | West Coast Schools Prestige Individuals Championships 2026 (U18 Boys) | Details |
| Standard | 3 | Schroeder, L (Liam) | 2 | 0 | 2 | Rooibos Open 2025 (Elite) | 2026 WCSC HS Individual Championship (U18 Boys) | Details |
| Standard | 4 | Basson, JE (Jacques Elbert) | 2 | 2 | 0 | Lambertsbay Chess Club Crayfish Classic 2024 | Deep Blue Open 2025 (A) | Details |
| Rapid | 1 | Elliott, M (Matayo) | 3 | 2 | 1 | Lower West Coast Top Schools 2025 (U15) | Pedro Booyse Top Schools 2025 (U15) | Details |
| Rapid | 2 | Meyer, D (Dewanio) | 3 | 0 | 3 | Lower West Coast Schools Chess Prestige 2024 (U15 Boys) | Deep Blue Open 2024 (Advanced) | Details |
| Rapid | 3 | Cardinal, J (Jacelynn) | 2 | 1 | 1 | Pedro Booyse Top Schools 2025 (U15) | Pedro Booyse Top Schools 2025 (U15) | Details |
| Rapid | 4 | Cloete, S (Stan Lee) | 2 | 1 | 1 | Pedro Booyse Top Schools 2025 (U15) | Pedro Booyse Top Schools 2025 (U15) | Details |
| Rapid | 5 | Willemse, S (Schalk) | 2 | 2 | 0 | Deep Blue Open 2024 (Advanced) | Basil Ellman Annual Rapid 2024 (Elite) | Details |
| Blitz | 1 | Siebritz, Y (Yul) | 3 | 0 | 3 | Deep Blue March Blitz 2024 | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 2 | Ellman, A (Anne-Belle) | 3 | 2 | 1 | Deep Blue March Blitz 2024 | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 3 | Siebritz, N (Noelle) | 3 | 1 | 2 | Deep Blue March Blitz 2024 | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 4 | Plint, G (Gordon) | 2 | 2 | 0 | Deep Blue March Blitz 2024 | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 5 | Stoffberg, M (Mikaeel) | 2 | 0 | 2 | Deep Blue Chess Club April Blitz 2024 | Deep Blue CC May Blitz 2024 | Details |