Chess South Africa
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Chess South Africa
Marais, JS (Jacobus)
Dob:
2010/06/21 (U16)
Gender:
Male
Chess SA id:
1100097226
FIDE id:
Region:
Tshwane (GTP)
Citizen:
RSA
Title(s):
Last active:
2024/05/02 (8 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
Curent Raw rating
1292.2
Curent Weighted rating
1230.7
Curent Weighted performance
1220.7
Current official/published rating (highest between Raw, WR and WP)
1292.2
Current floor (min rating allowed)
792.2
Current highest rating achieved
1292.2
Current K-factor
36
Games played this month
4
Score (S)
1.0
Expected score (We)
2.01
Difference (S-We)
-1.01
Current Raw change (no limits, including tournament time weight)
-30.2
Current min/max change allowed (with limits)
±145.4
Current Raw change used (final)
-30.2
Projected new Raw rating
1262.0
Projected new Weighed rating
1235.6
Projected new Weighted performance
1220.7
Projected new official/published rating (highest between new Raw, new WR and new WP)
1262.0
Projected effective change (new Official - current Official)
-30.2
Projected new highest rating
1292.2
Projected new floor
792.2
Projected new K-facor
36
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
Curent Raw rating
1289.9
Curent Weighted rating
1222.6
Curent Weighted performance
1218.0
Current official/published rating (highest between Raw, WR and WP)
1289.9
Current floor (min rating allowed)
789.9
Current highest rating achieved
1289.9
Current K-factor
36
Games played this month
4
Score (S)
1.0
Expected score (We)
2.01
Difference (S-We)
-1.01
Current Raw change (no limits, including tournament time weight)
-36.4
Current min/max change allowed (with limits)
±145.9
Current Raw change used (final)
-36.4
Projected new Raw rating
1253.5
Projected new Weighed rating
1227.6
Projected new Weighted performance
1218.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1253.5
Projected effective change (new Official - current Official)
-36.4
Projected new highest rating
1289.9
Projected new floor
789.9
Projected new K-facor
36
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
Curent Raw rating
1168.0
Curent Weighted rating
1168.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1168.0
Current floor (min rating allowed)
668.0
Current highest rating achieved
1168.0
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)
±173.6
Current Raw change used (final)
0.0
Projected new Raw rating
1168.0
Projected new Weighed rating
1168.0
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1168.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1168.0
Projected new floor
668.0
Projected new K-facor
40
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
Curent Raw rating
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
668.0
Current highest rating achieved
1200.0
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
1200.0
Projected new Weighted performance
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
Projected new highest rating
1200.0
Projected new floor
668.0
Projected new K-facor
36
Tournaments
History
Tournament:
2024 Mid Gauteng Open Chess Tournament (U16)
Start:
2024/05/02
End:
2024/05/02
Host:
GTP
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
4
Games:
4
Score:
1.0
Main rating:
1292.2
Rating gain/loss:
-30.2
Type rating:
1289.9
Rating gain/loss:
-36.4
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
2
2024 Mid Gauteng Open Chess Tournament (U16)
2024/05/02
2024/05/02
Tshwane (GTP)
Standard
60
0.83
5
4
1.0
1292.2
1289.9
Analysis
1
2024 Gauteng Inter-Region Chess Championship (U14C)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
5.0
1196.1
1185.5
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
43
2024 Mid Gauteng Open Chess Tournament (U16)
2024/05/02
2024/05/02
Tshwane (GTP)
Standard
60
0.83
5
4
1.0
1292.2
1289.9
Analysis
42
2024 Gauteng Inter-Region Chess Championship (U14C)
2024/01/13
2024/01/14
Tshwane (GTP)
Standard
90
0.94
5
5
5.0
1196.1
1185.5
Analysis
41
2023 Alekhine Open Tournament (C)
2023/09/09
2023/09/09
Tshwane (GTP)
Standard
90
0.94
5
5
1.0
1235.7
1224.4
Analysis
40
2023 Etienne Lewis Closed Tournament (U14)
2023/08/25
2023/08/27
Tshwane (GTP)
Standard
90
0.94
7
7
3.0
1258.0
1250.0
Analysis
39
2023 Milos Ristic Open Tournament (C)
2023/04/27
2023/04/27
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1263.9
1256.2
Analysis
38
2023 Afrikaans Hoër Seunskool Open Chess Tournament (C)
2023/03/04
2023/03/04
Tshwane (GTP)
Standard
60
0.83
5
5
3.5
1173.8
1163.7
Analysis
37
2023 Tshwane Chess Open Registration Tournament (C2)
2023/01/28
2023/01/28
Tshwane (GTP)
Standard
60
0.83
5
5
2.5
1165.1
1152.2
Analysis
36
2022 South African Junior Team Chess Championships (U14 Open)
2022/12/04
2022/12/08
4 Knights (4K)
Standard
120
1.00
7
5
3.5
1093.8
1075.9
Analysis
35
2022 Etienne Lewis (U14 Open)
2022/09/02
2022/09/04
Tshwane (GTP)
Standard
90
0.94
7
7
2.0
1109.0
1092.8
Analysis
34
D4 Play Offs 2022 (U13)
2022/07/30
2022/07/30
Tshwane (GTP)
Standard
60
0.83
5
5
1.0
1125.1
1111.2
Analysis
33
2022 Blou Bul Open (C)
2022/06/25
2022/06/26
Tshwane (GTP)
Standard
90
0.94
5
5
0.5
1186.4
1177.4
Analysis
32
2022 Milos Ristic Open Chess Tournament (C)
2022/05/28
2022/05/28
Tshwane (GTP)
Standard
60
0.83
5
4
2.0
1169.7
1156.2
Analysis
31
D4 Individuals 2022 (U13 Open)
2022/04/23
2022/04/23
Tshwane (GTP)
Rapid
30
0.60
7
7
3.0
1164.1
1200.0
Analysis
30
2022 Gauteng Interregion (U12 Open)
2022/02/26
2022/02/26
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1146.5
1131.4
Analysis
29
CP Ope 2022 (C)
2022/02/19
2022/02/19
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1146.5
1131.4
Analysis
28
2022 Tshwane Chess Open Registration Tournament (C2)
2022/01/29
2022/01/29
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1150.1
1133.2
Analysis
27
2021 Etienne Lewis Closed Trials (U12 Open)
2021/09/24
2021/09/26
Nelson Mandela Bay (ENM)
Standard
90
0.94
7
6
2.0
1188.7
1172.4
Analysis
26
2021 Chris Greyling Open Tournament (C)
2021/05/08
2021/05/08
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1156.5
1125.6
Analysis
25
2021 Lubowski Open Tournament (C)
2021/05/01
2021/05/02
Tshwane (GTP)
Standard
90
0.94
5
5
2.0
1156.5
1125.6
Analysis
24
2021 Registration Tournament (C)
2021/03/13
2021/03/13
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1162.8
1132.4
Analysis
1
2
3
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
9
6
0
3
6.0
66.7
141.7
1257.7
1399.3
White
3
2
0
1
2.0
66.7
141.7
1288.3
1430.0
Black
6
4
0
2
4.0
66.7
141.7
1242.3
1384.0
Standard
All
9
6
0
3
6.0
66.7
141.7
1257.7
1399.3
White
3
2
0
1
2.0
66.7
141.7
1288.3
1430.0
Black
6
4
0
2
4.0
66.7
141.7
1242.3
1384.0
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
227
96
16
115
104.0
45.8
-35.6
1184.1
1148.5
White
114
45
6
63
48.0
42.1
-67.1
1193.9
1126.8
Black
113
51
10
52
56.0
49.6
-3.8
1174.2
1170.4
Standard
All
220
93
16
111
101.0
45.9
-34.8
1181.9
1147.1
White
111
45
6
60
48.0
43.2
-57.4
1187.8
1130.4
Black
109
48
10
51
53.0
48.6
-11.7
1175.9
1164.2
Rapid
All
7
3
0
4
3.0
42.9
-60.7
1252.8
1192.1
White
3
0
0
3
0.0
0.0
-425.0
1420.5
995.5
Black
4
3
0
1
3.0
75.0
212.5
1127.0
1339.5
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
210088596
Louw, N (Nova)
3
3.0
3
0
0
100.0
1174.0
425.0
1599.0
View list
2
110092783
Van Rooyen, M (Marcel)
3
2.0
2
0
1
66.7
1159.8
141.7
1301.5
View list
3
2090109345
Viljoen, A (Amber)
3
2.0
2
0
1
66.7
1169.5
141.7
1311.2
View list
4
1110105109
Klopper, PA (Phillippus Arnoldus)
3
1.0
1
0
2
33.3
1154.4
-141.7
1012.8
View list
5
109083432
Vermeulen, T (Tiaan Leon)
3
0.5
0
1
2
16.7
1171.8
-283.3
888.4
View list
6
110088599
Bogaard, FK (Franco)
3
0.0
0
0
3
0.0
1178.2
-425.0
753.2
View list
7
1090103920
Reyneke, L (Luke)
3
0.0
0
0
3
0.0
1105.8
-425.0
680.8
View list
8
109086362
Yang, A (Alex)
3
0.0
0
0
3
0.0
1129.8
-425.0
704.8
View list
9
1110109561
Coetzee, M (Marko)
2
2.0
2
0
0
100.0
1127.3
425.0
1552.3
View list
10
1090101509
Janse Van Vuuren, A (Alexander)
2
2.0
2
0
0
100.0
1193.0
425.0
1618.0
View list
11
1090116741
Kekana, N (Neo)
2
2.0
2
0
0
100.0
1141.4
425.0
1566.4
View list
12
1100097309
O Rourke, R (Ronan)
2
2.0
2
0
0
100.0
1238.5
425.0
1663.5
View list
13
1110108342
Van Deventer, J (Jonathan)
2
2.0
2
0
0
100.0
1066.5
425.0
1491.5
View list
14
1090109066
Jooste, J (Josh)
2
1.5
1
1
0
75.0
1140.8
212.5
1353.3
View list
15
210094854
Eygelaar, L (Leila)
2
1.0
1
0
1
50.0
1142.4
0.0
1142.4
View list
16
1090098574
Gounder, A (Arun)
2
1.0
1
0
1
50.0
1147.4
0.0
1147.4
View list
17
109095323
Grobler, DDI (Donovan Denzel Izak)
2
1.0
1
0
1
50.0
1156.5
0.0
1156.5
View list
18
2110103926
Jacobs, AE (Alyssa)
2
1.0
1
0
1
50.0
1207.0
0.0
1207.0
View list
19
2080100531
Kowalsky, N (Natassja)
2
1.0
1
0
1
50.0
1085.0
0.0
1085.0
View list
20
208082677
Radia, D (Diya)
2
1.0
1
0
1
50.0
1158.0
0.0
1158.0
View list