Surname or Chess SA id..
Chess SA Region AOC

PLAYER PAGE

Gysbert Koen

1140334453
Sedibeng (GSV)
Personal
Main rating
Rating 1178.2
K-factor 40
Floor 700
Highest 1199.9 (2026-03-01)
Min/Max +/- allowed 166
Rating Change
()
Games 5
Score 2.5
We 2.28
SWe 0.19
Temp +/- 7.4
Penalties 0
Weight perform 0
Final +/- +7.4
New Rating
()
Rating 1185.6
K-factor 40
Floor 700
Highest 1199.9 (2026-03-01)
Min/Max +/- allowed 165.8
Standard rating
Rating 1173
K-factor 40
Floor 700
Highest 1199.9 (2026-03-01)
Min/Max +/- allowed 165.8
Rating Change
()
Games 5
Score 2.5
We 2.27
SWe 0.23
Temp +/- 9.3
Penalties 0
Weight perform 0
Final +/- +9.3
New Rating
()
Rating 1182.3
K-factor 40
Floor 700
Highest 1199.9 (2026-03-01)
Min/Max +/- allowed 165.8
Rapid rating
Rating 1200
K-factor 40
Floor 700
Highest 1199.9 (2026-03-01)
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 40
Floor 700
Highest 1199.9 (2026-03-01)
Min/Max +/- allowed 165.8
Blitz rating
Rating 1200
K-factor 40
Floor 700
Highest 1199.9 (2026-03-01)
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 40
Floor 700
Highest 1199.9 (2026-03-01)
Min/Max +/- allowed 165.8
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Chess-in-the-Vaal Open 18 April 2026 (E) Standard 2026-04-18 2026-04-18 Sedibeng (GSV) 5 1178.2 5 2.5 1209.3 7.4 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Laer Volkskool Chess Open 14 March 2026 (E) Standard 2026-03-14 2026-03-14 Sedibeng (GSV) 5 1200 5 2 1095.2 -21.8 Details
Game statistics ( )
Games 5
Wins 2
Draws 1
Losses 2
White 2
Black 3
White wins 0
Black wins 2
Score 2.5
Percent 50
Dp 0
AOR 1209.3
Performance 1209.3
Game statistics ()
Games 10
Wins 4
Draws 1
Losses 5
White 5
Black 5
White wins 1
Black wins 3
Score 4.5
Percent 45
Dp -42.5
AOR 1194.8
Performance 1152.3
Game statistics (History)
Games 10
Wins 4
Draws 1
Losses 5
White 5
Black 5
White wins 1
Black wins 3
Score 4.5
Percent 45
Dp -42.5
AOR 1194.8
Performance 1152.3
Rankings (Main)
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 (Standard)
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 (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 5
Score 2.5
Percent 50
Aor 1209.3
Dp 0
Prat 1209.3
Performance ()
Games 10
Score 4.5
Percent 45
Aor 1194.8
Dp -42.5
Prat 1152.3
Performance (12 months)
Games 10
Score 4.5
Percent 45
Aor 1194.8
Dp -42.5
Prat 1152.3
Performance (History)
Games 10
Score 4.5
Percent 45
Aor 1194.8
Dp -42.5
Prat 1152.3
Top 5 opponents most often played
Player not found.
Type # Opponent Games White Black First tournament Last tournament Details