Chess South Africa
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Chess South Africa
Van Der Merwe, J (Johannes)
Dob:
2010/11/30 (U16)
Gender:
Male
Chess SA id:
1100108274
FIDE id:
Region:
Ehlanzeni (MEN)
Citizen:
RSA
Title(s):
Last active:
2023/05/11 (504 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
1308.1
Current Weighted rating
1311.4
Current Weighted performance
1031.5
Current official/published rating (highest between Raw, WR and WP)
1311.4
Current highest rating achieved
1350.1
Current floor (min rating allowed)
850.1
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)
±142.1
Current Raw change used (final)
0.0
Projected new Raw rating
1308.1
Projected new Weighed rating
1206.0
Projected new Weighted performance
1031.5
Projected new final Raw rating (if new WP > new Raw)
1308.1
Projected new highest rating
1350.1
Projected new floor
850.1
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1308.1
Projected effective change (new Official - current Official)
-3.3
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
1300.5
Current Weighted rating
1304.3
Current Weighted performance
1031.5
Current official/published rating (highest between Raw, WR and WP)
1304.3
Current highest rating achieved
1350.2
Current floor (min rating allowed)
850.2
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)
±143.7
Current Raw change used (final)
0.0
Projected new Raw rating
1300.5
Projected new Weighed rating
1199.5
Projected new Weighted performance
1031.5
Projected new final Raw rating (if new WP > new Raw)
1300.5
Projected new highest rating
1350.2
Projected new floor
850.2
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1300.5
Projected effective change (new Official - current Official)
-3.8
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
1178.4
Current Weighted rating
1178.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1178.4
Current highest rating achieved
1178.4
Current floor (min rating allowed)
678.4
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)
±171.0
Current Raw change used (final)
0.0
Projected new Raw rating
1178.4
Projected new Weighed rating
1084.1
Projected new Weighted performance
150.7
Projected new final Raw rating (if new WP > new Raw)
1178.4
Projected new highest rating
1178.4
Projected new floor
678.4
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1178.4
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
1200.0
Current Weighted rating
1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current highest rating achieved
1200.0
Current floor (min rating allowed)
700.0
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)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1200.0
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
10
Robbies 2023 (U14)
2023/05/11
2023/05/11
Ehlanzeni (MEN)
Standard
63
0.84
5
5
2.0
1350.1
1350.2
Analysis
9
Uplands Chess Tournament 2023 (U14)
2023/02/25
2023/02/25
Ehlanzeni (MEN)
Standard
63
0.84
5
5
4.0
1330.7
1326.4
Analysis
8
Penryn Chess Tournament 2023 (U14)
2023/02/11
2023/02/11
Ehlanzeni (MEN)
Standard
63
0.84
5
5
3.0
1330.7
1326.4
Analysis
7
White River Primary 2022 (U14)
2022/07/30
2022/07/30
Ehlanzeni (MEN)
Standard
62
0.84
5
5
4.0
1268.2
1279.5
Analysis
6
Rob Ferreira Chess Tournament 2022 (U14)
2022/05/07
2022/05/07
Ehlanzeni (MEN)
Standard
62
0.84
5
5
4.0
1229.2
1234.5
Analysis
5
Lydenburg Chess Club 2022 (U14)
2022/04/09
2022/04/09
Ehlanzeni (MEN)
Standard
62
0.84
5
5
3.5
1203.8
1206.8
Analysis
4
Uplands Chess Tournament 2022 (U14)
2022/02/26
2022/02/26
Ehlanzeni (MEN)
Standard
62
0.84
5
5
3.0
1178.6
1178.8
Analysis
3
Bergvlam Tournament 2020 (U12)
2020/03/14
2020/03/14
Ehlanzeni (MEN)
Standard
63
0.84
5
5
3.0
1156.1
1152.0
Analysis
2
OCF Open 2020 (U12)
2020/01/25
2020/01/25
Overberg (WOS)
Rapid
15
0.39
5
5
2.0
1162.2
1200.0
Analysis
1
Chess Unlimited Open 2019 (D)
2019/01/26
2019/01/26
Ehlanzeni (MEN)
Standard
60
0.83
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
50
29
3
18
30.5
61.0
93.5
1174.6
1268.1
White
23
16
0
7
16.0
69.6
166.3
1147.4
1313.7
Black
27
13
3
11
14.5
53.7
31.5
1197.7
1229.2
Standard
All
45
27
3
15
28.5
63.3
113.3
1174.8
1288.2
White
21
16
0
5
16.0
76.2
222.6
1146.3
1369.0
Black
24
11
3
10
12.5
52.1
17.7
1199.8
1217.5
Rapid
All
5
2
0
3
2.0
40.0
-85.0
1172.1
1087.1
White
2
0
0
2
0.0
0.0
-425.0
1158.7
733.7
Black
3
2
0
1
2.0
66.7
141.7
1181.1
1322.8
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
1100108272
Joubert, P (Petrus)
3
2.0
1
2
0
66.7
1211.0
141.7
1352.7
View list
2
1100144375
Botha, M (Migael)
2
2.0
2
0
0
100.0
1299.5
425.0
1724.5
View list
3
2090132271
Malekane, R (Ronelle N)
2
2.0
2
0
0
100.0
1191.2
425.0
1616.2
View list
4
2100139891
Pretorius, M (Miandi)
2
2.0
2
0
0
100.0
1216.5
425.0
1641.5
View list
5
1110132283
Ngomane, B (Believe)
2
1.0
1
0
1
50.0
1340.4
0.0
1340.4
View list
6
1120104169
Eksteen, J (Jean)
2
0.0
0
0
2
0.0
1178.0
-425.0
753.0
View list
7
110087575
Ogunjiofor, CJ (Chinedu Jeremy)
2
0.0
0
0
2
0.0
1254.7
-425.0
829.7
View list
8
2100135335
Espag, V (Vanesh-Mari)
1
1.0
1
0
0
100.0
1268.2
425.0
1693.2
View list
9
2100149501
Macanja, U (Usia)
1
1.0
1
0
0
100.0
1330.7
425.0
1755.7
View list
10
1100152016
Mabuza, S (Sonke)
1
1.0
1
0
0
100.0
1330.7
425.0
1755.7
View list
11
1130151994
Malala, M (Melokunhle)
1
1.0
1
0
0
100.0
1330.7
425.0
1755.7
View list
12
108087985
Byleveldt, A (Andries)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
13
1110140513
Brits, J (Janco)
1
1.0
1
0
0
100.0
1350.1
425.0
1775.1
View list
14
1090139887
Breytenbach, J (Joshua)
1
1.0
1
0
0
100.0
1203.8
425.0
1628.8
View list
15
2100111755
Cawood, K (Kaylee)
1
1.0
1
0
0
100.0
1156.1
425.0
1581.1
View list
16
1000130183
Joseph, M (Maquin)
1
1.0
1
0
0
100.0
1162.2
425.0
1587.2
View list
17
1100149497
Jones, E (Ethan)
1
1.0
1
0
0
100.0
1330.7
425.0
1755.7
View list
18
1090132260
Hartzenberg, P (Pieter)
1
1.0
1
0
0
100.0
1156.1
425.0
1581.1
View list
19
2100132273
Mkhabela, A (Agile)
1
1.0
1
0
0
100.0
1350.1
425.0
1775.1
View list
20
109084374
Naidoo, J (Jasbir)
1
1.0
1
0
0
100.0
1229.2
425.0
1654.2
View list