Chess South Africa
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Chess South Africa
Zuidersma, JM (Jean)
Dob:
1964/06/01 (Adult)
Gender:
Male
Chess SA id:
164043578
FIDE id:
Region:
Sedibeng (GSV)
Citizen:
RSA
Title(s):
Last active:
2024/02/10 (288 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
1177.4
Current Weighted rating
1179.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1179.8
Current highest rating achieved
1186.0
Current floor (min rating allowed)
686.0
Current K-factor
40
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)
±171.2
Current Raw change used (final)
0.0
Projected new Raw rating
1177.4
Projected new Weighed rating
1085.0
Projected new Weighted performance
589.0
Projected new final Raw rating (if new WP > new Raw)
1177.4
Projected new highest rating
1186.0
Projected new floor
686.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1177.4
Projected effective change (new Official - current Official)
-2.4
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
1173.8
Current Weighted rating
1176.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1176.2
Current highest rating achieved
1186.0
Current floor (min rating allowed)
686.0
Current K-factor
40
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)
±172.1
Current Raw change used (final)
0.0
Projected new Raw rating
1173.8
Projected new Weighed rating
1081.7
Projected new Weighted performance
589.0
Projected new final Raw rating (if new WP > new Raw)
1173.8
Projected new highest rating
1186.0
Projected new floor
686.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1173.8
Projected effective change (new Official - current Official)
-2.4
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
1199.0
Current Weighted rating
1199.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1199.0
Current highest rating achieved
1199.0
Current floor (min rating allowed)
699.0
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)
±166.1
Current Raw change used (final)
0.0
Projected new Raw rating
1199.0
Projected new Weighed rating
1103.1
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1199.0
Projected new floor
699.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1199.0
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
1199.0
Current Weighted rating
1199.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1199.0
Current highest rating achieved
1199.0
Current floor (min rating allowed)
699.0
Current K-factor
40
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)
±166.1
Current Raw change used (final)
0.0
Projected new Raw rating
1199.0
Projected new Weighed rating
1103.1
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1199.0
Projected new floor
699.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1199.0
Projected effective change (new Official - current Official)
=0.0
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
1
Laerskool Midvaal Chess Open Section 2024 (A)
2024/02/10
2024/02/10
Sedibeng (GSV)
Standard
61
0.84
5
5
2.0
1178.4
1173.8
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
2
Laerskool Midvaal Chess Open Section 2024 (A)
2024/02/10
2024/02/10
Sedibeng (GSV)
Standard
61
0.84
5
5
2.0
1178.4
1173.8
Analysis
1
Eureka Open 2023 (C)
2023/07/29
2023/07/29
Sedibeng (GSV)
Standard
60
0.83
5
4
0.0
1199.0
1199.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
5
2
0
3
2.0
40.0
-85.0
1251.0
1166.0
White
2
1
0
1
1.0
50.0
0.0
1098.0
1098.0
Black
3
1
0
2
1.0
33.3
-141.7
1353.1
1211.4
Standard
All
5
2
0
3
2.0
40.0
-85.0
1251.0
1166.0
White
2
1
0
1
1.0
50.0
0.0
1098.0
1098.0
Black
3
1
0
2
1.0
33.3
-141.7
1353.1
1211.4
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
9
2
0
7
2.0
22.2
-236.1
1360.6
1124.5
White
4
1
0
3
1.0
25.0
-212.5
1332.8
1120.3
Black
5
1
0
4
1.0
20.0
-255.0
1382.9
1127.9
Standard
All
9
2
0
7
2.0
22.2
-236.1
1360.6
1124.5
White
4
1
0
3
1.0
25.0
-212.5
1332.8
1120.3
Black
5
1
0
4
1.0
20.0
-255.0
1382.9
1127.9
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
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
210075201
Williams, A (Anika)
1
1.0
1
0
0
100.0
1178.4
425.0
1603.4
View list
2
1980300118
Steyn, D (Donovan)
1
1.0
1
0
0
100.0
1178.4
425.0
1603.4
View list
3
100043580
Zuidersma, MJ (Marthinus)
1
0.0
0
0
1
0.0
1178.4
-425.0
753.4
View list
4
1050106647
Zimunya, T (Tumisho)
1
0.0
0
0
1
0.0
1199.0
-425.0
774.0
View list
5
187031806
Rantso, MP (Moiloa)
1
0.0
0
0
1
0.0
1178.4
-425.0
753.4
View list
6
1120146714
Mojapelo, D (Dakalo)
1
0.0
0
0
1
0.0
1199.0
-425.0
774.0
View list
7
1060112904
Mini, S (Siboniso)
1
0.0
0
0
1
0.0
1199.0
-425.0
774.0
View list
8
204086503
Kololo, L (Lindiwe)
1
0.0
0
0
1
0.0
1199.0
-425.0
774.0
View list
9
194011458
Grove, JJ (Jakobus)
1
0.0
0
0
1
0.0
1178.4
-425.0
753.4
View list
