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

PLAYER PAGE

Pieter Bosman

1140321401
Sedibeng (GSV)
Personal
Main rating
Rating 1237.7
K-factor 36
Floor 858.6
Highest 1417.5 (2025-09-30)
Min/Max +/- allowed 122
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1123.4
Final +/- 0
New Rating
()
Rating 1237.7
K-factor 36
Floor 858.6
Highest 1417.5 (2025-09-30)
Min/Max +/- allowed 121.6
Standard rating
Rating 1259.8
K-factor 36
Floor 878.6
Highest 1424.4 (2025-09-30)
Min/Max +/- allowed 120.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1119.9
Final +/- 0
New Rating
()
Rating 1259.8
K-factor 36
Floor 878.6
Highest 1424.4 (2025-09-30)
Min/Max +/- allowed 120.4
Rapid rating
Rating 1202.3
K-factor 36
Floor 702.3
Highest 1202.3 (2026-09-01)
Min/Max +/- allowed 165.3
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1202.3
K-factor 36
Floor 702.3
Highest 1202.3 (2026-09-01)
Min/Max +/- allowed 165.3
Blitz rating
Rating 1255.5
K-factor 36
Floor 755.5
Highest 1255.5 (2025-07-01)
Min/Max +/- allowed 153.2
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1255.5
K-factor 36
Floor 755.5
Highest 1255.5 (2025-07-01)
Min/Max +/- allowed 153.2
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 D7 (Sedibeng East) Schools Team Championships 2026 (U13) Rapid 2026-08-15 2026-08-15 Sedibeng (GSV) 5 1237.7 5 2.5 1219.7 -4.6 Details
2 D7 Sedibeng East Individuals League 2026 (U12+U13 Boys) Standard 2026-05-23 2026-05-23 Sedibeng (GSV) 5 1249.7 4 2 1196.3 -7.4 Details
3 Chess-in-the-Vaal Open 18 April 2026 (E) Standard 2026-04-18 2026-04-18 Sedibeng (GSV) 5 1261.4 5 2 1187.9 -11.7 Details
4 Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 1298 4 1 1046.2 -20.7 Details
5 2025 Gauteng Schools Provincial Individual Chess Championship (U11 Boys) Standard 2025-09-27 2025-09-27 Tshwane (GTP) 5 1417 5 2 1238.6 -16.6 Details
6 2025 Super 8 (Senior) Rapid 2025-09-26 2025-09-26 Ekurhuleni (GE) 7 1417 7 3.5 1238.8 -16.7 Details
7 Sedibeng Chess Open 06 Sept 2025 (E) Standard 2025-09-06 2025-09-06 Sedibeng (GSV) 5 1404.4 5 3 1459.8 4.8 Details
8 GDE (D7) Sedibeng East Schools 2025 (U13) Standard 2025-08-02 2025-08-02 Sedibeng (GSV) 5 1289.7 5 5 1624.2 33.5 Details
9 Eureka Chess Open 26 July 2025 (G) Standard 2025-07-26 2025-07-26 Sedibeng (GSV) 5 1293.1 5 2 1267.2 -1.8 Details
10 HS Driehoek Chess Open 2025 (E) Standard 2025-06-14 2025-06-14 Sedibeng (GSV) 5 1254.5 5 3 1402.6 13.8 Details
11 Vaal Chess Club Blitz Open 31 May 2025 (B) Blitz 2025-05-31 2025-05-31 Sedibeng (GSV) 7 1254.5 7 5 1439.2 7.7 Details
12 GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys) Standard 2025-05-24 2025-05-24 Sedibeng (GSV) 5 1200 5 4 1472.3 27.2 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 14
Wins 6
Draws 1
Losses 7
White 7
Black 7
White wins 1
Black wins 5
Score 6.5
Percent 46.4
Dp -30.4
AOR 1232
Performance 1201.7
Game statistics (History)
Games 62
Wins 33
Draws 4
Losses 25
White 28
Black 34
White wins 14
Black wins 19
Score 35
Percent 56.5
Dp 54.8
AOR 1269
Performance 1323.8
Rankings (Main)
National
Overall 9400
Gender 7507
Age group 1636
Gender/Age 1201
Provincial
Overall 3241
Gender 2552
Age group 559
Gender/Age 407
Regional
Overall 404
Gender 329
Age group 88
Gender/Age 67
Rankings (Standard)
National
Overall 6935
Gender 5524
Age group 1166
Gender/Age 835
Provincial
Overall 2512
Gender 1988
Age group 424
Gender/Age 309
Regional
Overall 300
Gender 242
Age group 62
Gender/Age 48
Rankings (Rapid)
National
Overall 4366
Gender 3413
Age group 981
Gender/Age 713
Provincial
Overall 1044
Gender 810
Age group 234
Gender/Age 170
Regional
Overall 208
Gender 169
Age group 52
Gender/Age 42
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 14
Score 6.5
Percent 46.4
Aor 1232
Dp -30.4
Prat 1201.7
Performance (12 months)
Games 30
Score 13
Percent 43.3
Aor 1252.4
Dp -56.7
Prat 1195.8
Performance (History)
Games 62
Score 35
Percent 56.5
Aor 1269
Dp 54.8
Prat 1323.8
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Nobete, G (Gomolemo) 3 2 1 HS Driehoek Chess Open 2025 (E) Sedibeng Chess Open 06 Sept 2025 (E) Details
Overall 2 Du Toit, M (Monika) 2 1 1 HS Driehoek Chess Open 2025 (E) Eureka Chess Open 26 July 2025 (G) Details
Overall 3 Conradie, LP (Lianro Pierre) 2 1 1 Eureka Chess Open 26 July 2025 (G) Sedibeng Chess Open 06 Sept 2025 (E) Details
Overall 4 Rosslee, SJ (Stephanus Johannes (Hanu)) 2 0 2 GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys) D7 Sedibeng East Individuals League 2026 (U12+U13 Boys) Details
Overall 5 Mehlomakulu, MT (Mpendulo) 2 1 1 GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys) Eureka Chess Open 26 July 2025 (G) Details
Standard 1 Nobete, G (Gomolemo) 3 2 1 HS Driehoek Chess Open 2025 (E) Sedibeng Chess Open 06 Sept 2025 (E) Details
Standard 2 Du Toit, M (Monika) 2 1 1 HS Driehoek Chess Open 2025 (E) Eureka Chess Open 26 July 2025 (G) Details
Standard 3 Rosslee, SJ (Stephanus Johannes (Hanu)) 2 0 2 GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys) D7 Sedibeng East Individuals League 2026 (U12+U13 Boys) Details
Standard 4 Conradie, LP (Lianro Pierre) 2 1 1 Eureka Chess Open 26 July 2025 (G) Sedibeng Chess Open 06 Sept 2025 (E) Details
Standard 5 Mehlomakulu, MT (Mpendulo) 2 1 1 GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys) Eureka Chess Open 26 July 2025 (G) Details