PLAYER PAGE
Stefan van der Merwe
1120316252Cape Winelands (WCW)Personal
Main rating
| Rating | 1481.7 |
| K-factor | 32 |
| Floor | 981.7 |
| Highest | 1481.7 (2026-09-01) |
| Min/Max +/- allowed | 111 |
| Rating Change () | |
| Games | 6 |
| Score | 2.5 |
| We | 2.98 |
| SWe | -0.4 |
| Temp +/- | -12.7 |
| Penalties | 0 |
| Weight perform | 1462 |
| Final +/- | -12.7 |
| New Rating () | |
| Rating | 1469 |
| K-factor | 32 |
| Floor | 981.7 |
| Highest | 1481.7 (2026-09-01) |
| Min/Max +/- allowed | 111 |
Standard rating
| Rating | 1409.1 |
| K-factor | 32 |
| Floor | 909.1 |
| Highest | 1409.1 (2026-03-01) |
| Min/Max +/- allowed | 123.1 |
| Rating Change () | |
| Games | 6 |
| Score | 2.5 |
| We | 2.51 |
| SWe | -0.01 |
| Temp +/- | -0.2 |
| Penalties | 0 |
| Weight perform | 1372.9 |
| Final +/- | -0.2 |
| New Rating () | |
| Rating | 1408.9 |
| K-factor | 32 |
| Floor | 909.1 |
| Highest | 1409.1 (2026-03-01) |
| Min/Max +/- allowed | 123.1 |
Rapid rating
| Rating | 1442.4 |
| K-factor | 32 |
| Floor | 942.4 |
| Highest | 1442.4 (2026-09-01) |
| Min/Max +/- allowed | 117.4 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1442.4 |
| K-factor | 32 |
| Floor | 942.4 |
| Highest | 1442.4 (2026-09-01) |
| Min/Max +/- allowed | 117.4 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2025-03-01) |
| 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 (2025-03-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Western Cape Schools - Top Schools 2026 (U19 Mix) | Standard | 2026-08-29 | 2026-08-30 | Cape Town (WCT) | 6 | 1481.7 | 6 | 2.5 | 1414.1 | -12.7 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Western Cape Schools - Brian Raubenheimer Development 2026 (U15+U17 Boys) | Rapid | 2026-08-15 | 2026-08-15 | Cape Winelands (WCW) | 6 | 1481.7 | 6 | 6 | 1701.7 | 36.5 | Details |
| 2 | Cape Winelands - Top Schools 2026 (U15 Mix) | Rapid | 2026-07-25 | 2026-07-25 | Cape Winelands (WCW) | 5 | 1427.3 | 5 | 4 | 1569.9 | 17.8 | Details |
| 3 | Cape Winelands Schools - Prestige 2026 (U15 Boys) | Standard | 2026-03-21 | 2026-03-21 | Cape Winelands (WCW) | 5 | 1348.5 | 5 | 3 | 1409.3 | 12 | Details |
| 4 | Cape Winelands Open Rapid 2026 (Intermediate) | Rapid | 2026-03-14 | 2026-03-14 | Cape Winelands (WCW) | 6 | 1348.5 | 6 | 5 | 1531.8 | 22.1 | Details |
| 5 | Cape Winelands Schools - High School Trials 1 2026 (U15 Boys) | Standard | 2026-02-28 | 2026-02-28 | Cape Winelands | 5 | 1348.5 | 5 | 3 | 1407.3 | 9.1 | Details |
| 6 | Marie Delport Memorial 2026 (Open) | Standard | 2026-01-31 | 2026-01-31 | Cape Winelands (WCW) | 6 | 1303.5 | 6 | 4 | 1504.5 | 13.6 | Details |
| 7 | Paarl Boys' High School Chess Festival 2025 (Primary Schools) | Standard | 2025-10-17 | 2025-10-18 | Cape Winelands (WCW) | 6 | 1248.5 | 6 | 4 | 1510.7 | 30.5 | Details |
| 8 | Kleinmond Chess Club Open 2025 (U14) | Rapid | 2025-08-30 | 2025-08-30 | Overberg (WOS) | 6 | 1216.3 | 6 | 4 | 1451.6 | 17.8 | Details |
| 9 | Cape Winelands Open 2025 (U14) | Standard | 2025-07-19 | 2025-07-19 | Cape Winelands (WCW) | 5 | 1200 | 5 | 2 | 1292.5 | 8.1 | Details |
| 10 | Cape Winelands Schools - Trials 1 2025 (U13 Boys) | Standard | 2025-02-22 | 2025-02-22 | Cape Winelands (WCW) | 5 | 1200 | 2 | 1 | 1191.6 | -0.3 | 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 | 39 |
| Wins | 26 |
| Draws | 3 |
| Losses | 10 |
| White | 19 |
| Black | 20 |
| White wins | 9 |
| Black wins | 17 |
| Score | 27.5 |
| Percent | 70.5 |
| Dp | 174.4 |
| AOR | 1334.5 |
| Performance | 1508.8 |
Game statistics (History)
| Games | 58 |
| Wins | 37 |
| Draws | 3 |
| Losses | 18 |
| White | 29 |
| Black | 29 |
| White wins | 17 |
| Black wins | 20 |
| Score | 38.5 |
| Percent | 66.4 |
| Dp | 139.2 |
| AOR | 1334.3 |
| Performance | 1473.5 |
Rankings (Main)
| National | |
| Overall | 2219 |
| Gender | 1932 |
| Age group | 263 |
| Gender/Age | 212 |
| Provincial | |
| Overall | 659 |
| Gender | 551 |
| Age group | 84 |
| Gender/Age | 67 |
| Regional | |
| Overall | 90 |
| Gender | 67 |
| Age group | 16 |
| Gender/Age | 12 |
Rankings (Standard)
| National | |
| Overall | 3028 |
| Gender | 2533 |
| Age group | 435 |
| Gender/Age | 348 |
| Provincial | |
| Overall | 865 |
| Gender | 674 |
| Age group | 123 |
| Gender/Age | 91 |
| Regional | |
| Overall | 124 |
| Gender | 92 |
| Age group | 25 |
| Gender/Age | 18 |
Rankings (Rapid)
| National | |
| Overall | 682 |
| Gender | 608 |
| Age group | 102 |
| Gender/Age | 85 |
| Provincial | |
| Overall | 315 |
| Gender | 275 |
| Age group | 46 |
| Gender/Age | 38 |
| Regional | |
| Overall | 51 |
| Gender | 39 |
| Age group | 10 |
| Gender/Age | 6 |
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 | 39 |
| Score | 27.5 |
| Percent | 70.5 |
| Aor | 1334.5 |
| Dp | 174.4 |
| Prat | 1508.8 |
Performance (12 months)
| Games | 45 |
| Score | 31.5 |
| Percent | 70 |
| Aor | 1339.1 |
| Dp | 170 |
| Prat | 1509.1 |
Performance (History)
| Games | 58 |
| Score | 38.5 |
| Percent | 66.4 |
| Aor | 1334.3 |
| Dp | 139.2 |
| Prat | 1473.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Holmes, M (Matthew) | 2 | 2 | 0 | Cape Winelands Schools - High School Trials 1 2026 (U15 Boys) | Cape Winelands Schools - Prestige 2026 (U15 Boys) | Details |
| Standard | 1 | Holmes, M (Matthew) | 2 | 2 | 0 | Cape Winelands Schools - High School Trials 1 2026 (U15 Boys) | Cape Winelands Schools - Prestige 2026 (U15 Boys) | Details |