Surname or Chess SA id..
Chess SA Region AOC Mzansi 2026

PLAYER PAGE

Stefan van der Merwe

1120316252
Cape Winelands (WCW)
Personal
Main rating
Rating 1469
K-factor 32
Floor 981.7
Highest 1481.7 (2026-09-01)
Min/Max +/- allowed 111
Rating Change
()
Games 6
Score 4.5
We 4.26
SWe 0.13
Temp +/- 4.2
Penalties 0
Weight perform 1428.8
Final +/- +4.2
New Rating
()
Rating 1473.2
K-factor 32
Floor 981.7
Highest 1481.7 (2026-09-01)
Min/Max +/- allowed 111
Standard rating
Rating 1408.9
K-factor 32
Floor 909.1
Highest 1409.1 (2026-03-01)
Min/Max +/- allowed 123.1
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1355.3
Final +/- 0
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 6
Score 4.5
We 4.45
SWe 0.05
Temp +/- 1.7
Penalties 0
Weight perform 1510.7
Final +/- +68.3
New Rating
()
Rating 1510.7
K-factor 32
Floor 1010.7
Highest 1510.7 (2026-10-01)
Min/Max +/- allowed 106.5
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 The Nautilus Chess Tournament 2026 (U15 Boys) Rapid 2026-09-19 2026-09-19 Cape Winelands (WCW) 6 1469 6 4.5 1466.9 4.2 Details
# 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
2 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
3 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
4 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
5 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
6 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
7 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
8 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
9 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
10 Cape Winelands Open 2025 (U14) Standard 2025-07-19 2025-07-19 Cape Winelands (WCW) 5 1200 5 2 1292.5 8.1 Details
11 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 45
Wins 30
Draws 4
Losses 11
White 23
Black 22
White wins 12
Black wins 18
Score 32
Percent 71.1
Dp 179.4
AOR 1323.8
Performance 1503.2
Game statistics (History)
Games 64
Wins 41
Draws 4
Losses 19
White 33
Black 31
White wins 20
Black wins 21
Score 43
Percent 67.2
Dp 146.1
AOR 1326.8
Performance 1472.9
Rankings (Main)
National
Overall 2398
Gender 2080
Age group 296
Gender/Age 234
Provincial
Overall 728
Gender 604
Age group 96
Gender/Age 73
Regional
Overall 97
Gender 74
Age group 19
Gender/Age 14
Rankings (Standard)
National
Overall 3017
Gender 2520
Age group 436
Gender/Age 346
Provincial
Overall 879
Gender 679
Age group 126
Gender/Age 92
Regional
Overall 125
Gender 92
Age group 25
Gender/Age 18
Rankings (Rapid)
National
Overall 695
Gender 620
Age group 100
Gender/Age 82
Provincial
Overall 326
Gender 286
Age group 46
Gender/Age 38
Regional
Overall 53
Gender 41
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 45
Score 32
Percent 71.1
Aor 1323.8
Dp 179.4
Prat 1503.2
Performance (12 months)
Games 45
Score 32
Percent 71.1
Aor 1323.8
Dp 179.4
Prat 1503.2
Performance (History)
Games 64
Score 43
Percent 67.2
Aor 1326.8
Dp 146.1
Prat 1472.9
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