Chess South Africa
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Chess South Africa
Williams, ZJ (Zachary John)
Dob:
2007/09/06 (U18)
Gender:
Male
Chess SA id:
1070118239
FIDE id:
Region:
Johannesburg Metro (GJM)
Citizen:
RSA
Title(s):
Last active:
2022/03/12 (829 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
1172.0
Current Weighted rating
1172.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1172.0
Current highest rating achieved
1172.0
Current floor (min rating allowed)
672.0
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)
±172.6
Current Raw change used (final)
0.0
Projected new Raw rating
1172.0
Projected new Weighed rating
1078.2
Projected new Weighted performance
610.0
Projected new final Raw rating (if new WP > new Raw)
1172.0
Projected new highest rating
1172.0
Projected new floor
672.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1172.0
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
1173.2
Current Weighted rating
1173.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1173.2
Current highest rating achieved
1173.2
Current floor (min rating allowed)
673.2
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)
±172.3
Current Raw change used (final)
0.0
Projected new Raw rating
1173.2
Projected new Weighed rating
1079.3
Projected new Weighted performance
610.0
Projected new final Raw rating (if new WP > new Raw)
1173.2
Projected new highest rating
1173.2
Projected new floor
673.2
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
1173.2
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
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)
±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
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
4
JNW Trinityhouse LF 2022 (Contenders)
2022/03/12
2022/03/12
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1139.5
1132.4
Analysis
3
JNW Club - Trinityhouse Little Falls Open 2020 (D)
2020/03/14
2020/03/14
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.5
1087.4
1066.4
Analysis
2
JNW Club - Trinityhouse Randpark Ridge Open 2020 (D)
2020/02/22
2020/02/22
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
1.5
1111.0
1092.0
Analysis
1
2019 Gauteng School League Finals (U13 Open)
2019/08/23
2019/08/23
Tshwane (GTP)
Standard
60
0.83
5
5
0.0
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
20
7
2
11
8.0
40.0
-85.0
1184.9
1099.9
White
10
4
1
5
4.5
45.0
-42.5
1164.6
1122.1
Black
10
3
1
6
3.5
35.0
-127.5
1205.2
1077.7
Standard
All
20
7
2
11
8.0
40.0
-85.0
1184.9
1099.9
White
10
4
1
5
4.5
45.0
-42.5
1164.6
1122.1
Black
10
3
1
6
3.5
35.0
-127.5
1205.2
1077.7
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
210091697
Botha, A (Andrea)
2
1.0
1
0
1
50.0
1099.2
0.0
1099.2
View list
2
107093975
Coetzer, R (Ruan)
1
1.0
1
0
0
100.0
1087.4
425.0
1512.4
View list
3
1100110075
Mupalala, K (Kenzo)
1
1.0
1
0
0
100.0
1087.4
425.0
1512.4
View list
4
1120138265
Strickler, L (Luke)
1
1.0
1
0
0
100.0
1139.5
425.0
1564.5
View list
5
211091693
Steyn, A (Anneke)
1
1.0
1
0
0
100.0
1139.5
425.0
1564.5
View list
6
1110138263
Ryan, D (Declan)
1
1.0
1
0
0
100.0
1139.5
425.0
1564.5
View list
7
1080103611
Ludek, K (Kai)
1
1.0
1
0
0
100.0
1111.0
425.0
1536.0
View list
8
109078830
Johnson, A (Ashar)
1
0.5
0
1
0
50.0
1087.4
0.0
1087.4
View list
9
1070132201
Owens, D (Dylan)
1
0.5
0
1
0
50.0
1111.0
0.0
1111.0
View list
10
1070105735
Monyai, K (Karabo)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
11
1060115074
Masilela, T (Thabiso)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
12
1080105739
Mafafo, BL (Botshelo Lindokuhle)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
13
1060105200
Mabena, M (Mkhuseli)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
14
1020118417
Lin, X (Xingjie)
1
0.0
0
0
1
0.0
1087.4
-425.0
662.4
View list
15
110091688
Kwak, J (Jaeson)
1
0.0
0
0
1
0.0
1111.0
-425.0
686.0
View list
16
108082807
Joseph, J (Jamie)
1
0.0
0
0
1
0.0
1111.0
-425.0
686.0
View list
17
2070098538
De Lange, S (Sophia)
1
0.0
0
0
1
0.0
1200.0
-425.0
775.0
View list
18
1060113146
Barnard, N (Nathan)
1
0.0
0
0
1
0.0
1139.5
-425.0
714.5
View list
19
1100111138
Akker, D (Dylan)
1
0.0
0
0
1
0.0
1139.5
-425.0
714.5
View list