Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Du Preez, J (Johan)
Dob:
1966/09/14 (Adult)
Gender:
Male
Chess SA id:
1660143623
FIDE id:
Region:
Cape Town (WCT)
Citizen:
RSA
Title(s):
Last active:
2023/10/21 (404 days ago)
Ratings
The
Projected values
below are
NOT
the actual and official values as calculated by the Ratings Bureau.
Main
Standard
Rapid
Blitz
Raw rating
=Current rating,
Weighted rating (WR)
=Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Current Raw rating
1274.5
Current Weighted rating
1247.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1274.5
Current highest rating achieved
1274.5
Current floor (min rating allowed)
774.5
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±149.1
Current Raw change used (final)
0.0
Projected new Raw rating
1274.5
Projected new Weighed rating
1148.8
Projected new Weighted performance
478.1
Projected new final Raw rating (if new WP > new Raw)
1274.5
Projected new highest rating
1274.5
Projected new floor
774.5
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1274.5
Projected effective change (new Official - current Official)
=0.0
Raw rating
=Current rating,
Weighted rating (WR)
=Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Current Raw rating
1300.0
Current Weighted rating
1269.7
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1300.0
Current highest rating achieved
1300.0
Current floor (min rating allowed)
800.0
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±143.8
Current Raw change used (final)
0.0
Projected new Raw rating
1300.0
Projected new Weighed rating
1170.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1300.0
Projected new floor
800.0
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1300.0
Projected effective change (new Official - current Official)
=0.0
Raw rating
=Current rating,
Weighted rating (WR)
=Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Current Raw rating
1096.8
Current Weighted rating
1112.3
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1112.3
Current highest rating achieved
1181.6
Current floor (min rating allowed)
681.6
Current K-factor
40
s
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±192.1
Current Raw change used (final)
0.0
Projected new Raw rating
1096.8
Projected new Weighed rating
1021.8
Projected new Weighted performance
503.3
Projected new final Raw rating (if new WP > new Raw)
1096.8
Projected new highest rating
1181.6
Projected new floor
681.6
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1096.8
Projected effective change (new Official - current Official)
-15.5
Raw rating
=Current rating,
Weighted rating (WR)
=Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Current Raw rating
1300.0
Current Weighted rating
1269.7
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1300.0
Current highest rating achieved
1300.0
Current floor (min rating allowed)
800.0
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±143.8
Current Raw change used (final)
0.0
Projected new Raw rating
1300.0
Projected new Weighed rating
1170.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1300.0
Projected new floor
800.0
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1300.0
Projected effective change (new Official - current Official)
=0.0
Tournaments
History
Did not participate this month.
Did not participate this year.
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
2
Bonnievale Open Rapid 2023 (Intermediate)
2023/10/21
2023/10/21
Cape Winelands (WCW)
Rapid
25
0.54
6
6
1.0
1192.8
1181.6
Analysis
1
Curro Durbanville Chess Open Rapid 2022 (Parents)
2022/07/02
2022/07/02
Cape Town (WCT)
Rapid
15
0.39
5
5
2.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Standard
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Rapid
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
11
3
0
8
3.0
27.3
-193.2
1261.3
1068.2
White
4
1
0
3
1.0
25.0
-212.5
1247.3
1034.8
Black
7
2
0
5
2.0
28.6
-182.1
1269.3
1087.2
Standard
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Rapid
All
11
3
0
8
3.0
27.3
-193.2
1261.3
1068.2
White
4
1
0
3
1.0
25.0
-212.5
1247.3
1034.8
Black
7
2
0
5
2.0
28.6
-182.1
1269.3
1087.2
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1760143630
Noble, H (Helen)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
2
1780143635
Weideman, J (Jaco)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
3
1850147574
Van Niekerk, J (Johan)
1
1.0
1
0
0
100.0
1192.8
425.0
1617.8
View list
4
1760143634
Snyman, D (David)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
5
1780143632
Petersen, R (Randel)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
6
1750143631
Olivier, B (Barnard)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
7
1070115880
Naude, J (Jan-Daniel)
1
0.0
0
0
1
0.0
1192.8
-425.0
767.8
View list
8
206075236
Goeieman, J (Jody-Anne)
1
0.0
0
0
1
0.0
1192.8
-425.0
767.8
View list
9
105060444
Edwards, B (Brandon)
1
0.0
0
0
1
0.0
1192.8
-425.0
767.8
View list
10
206092089
Choli, T (Thimwa Angel)
1
0.0
0
0
1
0.0
1192.8
-425.0
767.8
View list
11
206049651
Augustyn, A (Anika)
1
0.0
0
0
1
0.0
1192.8
-425.0
767.8
View list
