Surname or Chess SA id..
Chess SA Region AOC

PLAYER PAGE

Joswin Bostander

1130316370
Central Karoo (WCK)
Personal
Main rating
Rating 1200
K-factor 36
Floor 701.4
Highest 1201.4 (2025-03-01)
Min/Max +/- allowed 165
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 701.4
Highest 1201.4 (2025-03-01)
Min/Max +/- allowed 165.5
Standard rating
Rating 1199.9
K-factor 36
Floor 701.7
Highest 1201.7 (2025-03-01)
Min/Max +/- allowed 165.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1199.9
K-factor 36
Floor 701.7
Highest 1201.7 (2025-03-01)
Min/Max +/- allowed 165.4
Rapid 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
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
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 Western Cape Schools Individual Championship 2025 (U13 Boys) Standard 2025-05-17 2025-05-18 Cape Winelands (WCW) 6 1201.4 5 0 942.8 0 Details
2 Central Karoo Schools Chess Trail 1 2025 (U13) Standard 2025-02-22 2025-02-22 Central Karoo (WCK) 5 1200 5 2.5 1200 0 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 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 (History)
Games 10
Wins 2
Draws 1
Losses 7
White 4
Black 6
White wins 1
Black wins 1
Score 2.5
Percent 25
Dp -212.5
AOR 1283.9
Performance 1071.4
Rankings (Main)
National
Overall 12745
Gender 10017
Age group 2274
Gender/Age 1646
Provincial
Overall 3658
Gender 2801
Age group 668
Gender/Age 466
Regional
Overall 20
Gender 18
Age group 6
Gender/Age 4
Rankings (Standard)
National
Overall 10010
Gender 7803
Age group 1774
Gender/Age 1265
Provincial
Overall 2830
Gender 2104
Age group 507
Gender/Age 337
Regional
Overall 18
Gender 16
Age group 6
Gender/Age 4
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 0
Score 0
Percent 0
Aor 0
Dp 0
Prat 0
Performance (12 months)
Games 5
Score 0
Percent 0
Aor 1367.8
Dp -425
Prat 942.8
Performance (History)
Games 10
Score 2.5
Percent 25
Aor 1283.9
Dp -212.5
Prat 1071.4
Top 5 opponents most often played
Player not found.
Type # Opponent Games White Black First tournament Last tournament Details