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

PLAYER PAGE

Rosco Willemse

1170331116
Overberg (WOS)
Personal
Main rating
Rating 1159.5
K-factor 36
Floor 706.9
Highest 1206.9 (2026-03-01)
Min/Max +/- allowed 164
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1159.5
K-factor 36
Floor 706.9
Highest 1206.9 (2026-03-01)
Min/Max +/- allowed 164.2
Standard rating
Rating 1107.5
K-factor 40
Floor 700
Highest 1199 (2026-02-06)
Min/Max +/- allowed 166.1
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1107.5
K-factor 40
Floor 700
Highest 1199 (2026-02-06)
Min/Max +/- allowed 166.1
Rapid rating
Rating 1254.8
K-factor 36
Floor 754.8
Highest 1254.8 (2026-03-01)
Min/Max +/- allowed 153.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1254.8
K-factor 36
Floor 754.8
Highest 1254.8 (2026-03-01)
Min/Max +/- allowed 153.4
Blitz rating
Rating 1200
K-factor 40
Floor 700
Highest 1199 (2026-02-06)
Min/Max +/- allowed 166.1
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 40
Floor 700
Highest 1199 (2026-02-06)
Min/Max +/- allowed 166.1
Rating Graph
Tournaments
No tournaments found.
# 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 Overberg Top Schools 2026 (U11) Standard 2026-08-01 2026-08-01 Overberg (WOS) 5 1159.5 5 1.5 943.7 -47.3 Details
2 Overberg Schools Primary School Closed 2026 (U9 Boys) Standard 2026-03-21 2026-03-21 Overberg (WOS) 5 1197.4 5 1.5 1075.8 -25.2 Details
3 Overberg Schools Primary School Trials (Region 1) 2026 (U9 Boys) Rapid 2026-02-28 2026-02-28 Overberg 6 1197.4 6 4 1401.5 34.7 Details
4 Overberg Schools Open Championship 2026 (U9) Rapid 2026-01-31 2026-01-31 Overberg (WOS) 6 1200 5 1 964.4 -16.1 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 7
Draws 2
Losses 12
White 11
Black 10
White wins 4
Black wins 3
Score 8
Percent 38.1
Dp -101.2
AOR 1212.1
Performance 1110.9
Game statistics (History)
Games 21
Wins 7
Draws 2
Losses 12
White 11
Black 10
White wins 4
Black wins 3
Score 8
Percent 38.1
Dp -101.2
AOR 1212.1
Performance 1110.9
Rankings (Main)
National
Overall 15863
Gender 12056
Age group 1186
Gender/Age 830
Provincial
Overall 4698
Gender 3498
Age group 420
Gender/Age 299
Regional
Overall 416
Gender 276
Age group 42
Gender/Age 28
Rankings (Standard)
National
Overall 13229
Gender 9753
Age group 1069
Gender/Age 746
Provincial
Overall 4053
Gender 2853
Age group 397
Gender/Age 269
Regional
Overall 305
Gender 177
Age group 40
Gender/Age 24
Rankings (Rapid)
National
Overall 2989
Gender 2416
Age group 200
Gender/Age 163
Provincial
Overall 1196
Gender 938
Age group 98
Gender/Age 81
Regional
Overall 159
Gender 110
Age group 15
Gender/Age 13
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 8
Percent 38.1
Aor 1212.1
Dp -101.2
Prat 1110.9
Performance (12 months)
Games 21
Score 8
Percent 38.1
Aor 1212.1
Dp -101.2
Prat 1110.9
Performance (History)
Games 21
Score 8
Percent 38.1
Aor 1212.1
Dp -101.2
Prat 1110.9
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Sander, M (Malakai) 2 0 2 Overberg Schools Primary School Trials (Region 1) 2026 (U9 Boys) Overberg Schools Primary School Closed 2026 (U9 Boys) Details
Overall 2 Mackenzie, T (Tylo) 2 2 0 Overberg Schools Primary School Trials (Region 1) 2026 (U9 Boys) Overberg Schools Primary School Closed 2026 (U9 Boys) Details