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

PLAYER PAGE

John Mostert

1200328612
Tshwane (GTP)
Personal
Main rating
Rating 1015.3
K-factor 40
Floor 699
Highest 1199 (2025-09-30)
Min/Max +/- allowed 166
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 846.9
Final +/- 0
New Rating
()
Rating 1015.3
K-factor 40
Floor 699
Highest 1199 (2025-09-30)
Min/Max +/- allowed 166.1
Standard rating
Rating 997.6
K-factor 40
Floor 699
Highest 1199 (2025-09-30)
Min/Max +/- allowed 166.1
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 846.9
Final +/- 0
New Rating
()
Rating 997.6
K-factor 40
Floor 699
Highest 1199 (2025-09-30)
Min/Max +/- allowed 166.1
Rapid rating
Rating 1200
K-factor 40
Floor 700
Highest 1199 (2025-09-30)
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 (2025-09-30)
Min/Max +/- allowed 166.1
Blitz rating
Rating 1200
K-factor 40
Floor 700
Highest 1199 (2025-09-30)
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 (2025-09-30)
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 Elise Steenkamp 2026 (Pawn) Standard 2026-06-13 2026-06-13 Tshwane (GTP) 5 1079.9 4 0 696.8 -64.6 Details
2 2026 KSNG Open Chess Tournament (U8+U10) Standard 2026-04-18 2026-04-18 Tshwane (GTP) 5 1122.7 4 0 850.7 -42.7 Details
3 2026 Lubowski Open Chess Tournament (E+F) Standard 2026-03-21 2026-03-21 Tshwane (GTP) 5 1168.4 5 1.5 1033.8 -31.4 Details
4 2026 Silver Lakes Open Chess Tournament (U8) Standard 2026-03-07 2026-03-07 Tshwane (GTP) 4 1168.4 3 1 1058.3 -14.3 Details
5 2026 Tshwane Chess Registration Tournament (U8) Standard 2026-01-31 2026-01-31 Tshwane (GTP) 5 1175.6 5 1 971.8 -19.3 Details
6 2025 Centurion Chess Open Tournament (U8) Standard 2025-09-27 2025-09-27 Tshwane (GTP) 5 1200 5 0 853.2 -33.2 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 21
Wins 3
Draws 1
Losses 17
White 10
Black 11
White wins 3
Black wins 0
Score 3.5
Percent 16.7
Dp -283.3
AOR 1206.8
Performance 923.5
Game statistics (History)
Games 26
Wins 3
Draws 1
Losses 22
White 12
Black 14
White wins 3
Black wins 0
Score 3.5
Percent 13.5
Dp -310.6
AOR 1220.6
Performance 910
Rankings (Main)
National
Overall 19483
Gender 14360
Age group 224
Gender/Age 150
Provincial
Overall 6297
Gender 4602
Age group 52
Gender/Age 32
Regional
Overall 1860
Gender 1372
Age group 9
Gender/Age 5
Rankings (Standard)
National
Overall 14618
Gender 10648
Age group 174
Gender/Age 115
Provincial
Overall 5008
Gender 3622
Age group 39
Gender/Age 25
Regional
Overall 1765
Gender 1297
Age group 10
Gender/Age 5
Rankings (Rapid)
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
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 3.5
Percent 16.7
Aor 1206.8
Dp -283.3
Prat 923.5
Performance (12 months)
Games 26
Score 3.5
Percent 13.5
Aor 1220.6
Dp -310.6
Prat 910
Performance (History)
Games 26
Score 3.5
Percent 13.5
Aor 1220.6
Dp -310.6
Prat 910
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Jansen Van Vuuren, J (Jaelyn) 3 2 1 2026 Silver Lakes Open Chess Tournament (U8) Elise Steenkamp 2026 (Pawn) Details
Overall 2 Rampersadh, A (Ayaan) 2 0 2 2026 Tshwane Chess Registration Tournament (U8) Elise Steenkamp 2026 (Pawn) Details
Overall 3 Maswabela, L (Lethabo) 2 1 1 2026 Lubowski Open Chess Tournament (E+F) Elise Steenkamp 2026 (Pawn) Details
Overall 4 Roelofse, G (Gizelle) 2 2 0 2026 Lubowski Open Chess Tournament (E+F) 2026 KSNG Open Chess Tournament (U8+U10) Details
Overall 5 Sekgobela, A (Adil) 2 1 1 2026 Tshwane Chess Registration Tournament (U8) 2026 KSNG Open Chess Tournament (U8+U10) Details
Standard 1 Jansen Van Vuuren, J (Jaelyn) 3 2 1 2026 Silver Lakes Open Chess Tournament (U8) Elise Steenkamp 2026 (Pawn) Details
Standard 2 Rampersadh, A (Ayaan) 2 0 2 2026 Tshwane Chess Registration Tournament (U8) Elise Steenkamp 2026 (Pawn) Details
Standard 3 Maswabela, L (Lethabo) 2 1 1 2026 Lubowski Open Chess Tournament (E+F) Elise Steenkamp 2026 (Pawn) Details
Standard 4 Roelofse, G (Gizelle) 2 2 0 2026 Lubowski Open Chess Tournament (E+F) 2026 KSNG Open Chess Tournament (U8+U10) Details
Standard 5 Sekgobela, A (Adil) 2 1 1 2026 Tshwane Chess Registration Tournament (U8) 2026 KSNG Open Chess Tournament (U8+U10) Details