Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Kotze, R (Ruan)
Dob:
2010/06/21 (U16)
Gender:
Male
Chess SA id:
110086188
FIDE id:
Region:
Mangaung (FMB)
Citizen:
RSA
Title(s):
Last active:
2024/05/05 (28 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
1421.3
Curent Weighted rating
1309.6
Curent Weighted performance
1422.6
Current official/published rating (highest between Raw, WR and WP)
1421.3
Current floor (min rating allowed)
961.5
Current highest rating achieved
1461.5
Current K-factor
32
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)
±121.0
Current Raw change used (final)
0.0
Projected new Raw rating
1421.3
Projected new Weighed rating
1319.4
Projected new Weighted performance
1422.6
Projected new official/published rating (highest between new Raw, new WR and new WP)
1422.6
Projected effective change (new Official - current Official)
+1.3
Projected new highest rating
1461.5
Projected new floor
961.5
Projected new K-facor
32
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
1448.3
Curent Weighted rating
1351.4
Curent Weighted performance
1447.7
Current official/published rating (highest between Raw, WR and WP)
1448.3
Current floor (min rating allowed)
957.2
Current highest rating achieved
1457.2
Current K-factor
32
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)
±116.4
Current Raw change used (final)
0.0
Projected new Raw rating
1448.3
Projected new Weighed rating
1359.5
Projected new Weighted performance
1447.7
Projected new official/published rating (highest between new Raw, new WR and new WP)
1448.3
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1457.2
Projected new floor
957.2
Projected new K-facor
32
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
1319.2
Curent Weighted rating
934.5
Curent Weighted performance
1274.2
Current official/published rating (highest between Raw, WR and WP)
1319.2
Current floor (min rating allowed)
882.9
Current highest rating achieved
1382.9
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)
±139.9
Current Raw change used (final)
0.0
Projected new Raw rating
1319.2
Projected new Weighed rating
973.2
Projected new Weighted performance
1274.2
Projected new official/published rating (highest between new Raw, new WR and new WP)
1319.2
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1382.9
Projected new floor
882.9
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
811.8
Curent Weighted rating
811.8
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
811.8
Current floor (min rating allowed)
882.9
Current highest rating achieved
811.8
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)
±288.3
Current Raw change used (final)
0.0
Projected new Raw rating
811.8
Projected new Weighed rating
811.8
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
811.8
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
811.8
Projected new floor
882.9
Projected new K-facor
40
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
7
Spartan Bishops Chess Championships 2024 (Knights)
2024/05/04
2024/05/05
Bojanala Platina (NBR)
Standard
60
0.83
5
5
4.0
1374.0
1383.0
Analysis
6
Mangaung Metro Chess 12-13 April 2024 (B)
2024/04/12
2024/04/13
Mangaung (FMB)
Standard
62
0.84
5
5
4.0
1350.3
1360.0
Analysis
5
Bloemfontein Highschool League 2024 (U17A)
2024/03/08
2024/03/08
Mangaung (FMB)
Rapid
15
0.39
5
4
1.0
1371.5
1382.9
Analysis
4
Grey College Team Championship 2024 (B)
2024/02/23
2024/02/24
Mangaung (FMB)
Standard
60
0.83
5
5
4.5
1279.7
1330.9
Analysis
3
Bloemfontein High School League 16 February 2024 (U15A)
2024/02/16
2024/02/16
Mangaung (FMB)
Rapid
15
0.39
5
5
5.0
1279.7
934.8
Analysis
2
Mangaung Metro Chess 10 February 2024 (B)
2024/02/10
2024/02/10
Mangaung (FMB)
Rapid
32
0.63
5
5
4.0
1279.7
934.8
Analysis
1
Kings & Queens Chess 27 January 2024 (B)
2024/01/27
2024/01/27
Mangaung (FMB)
Rapid
32
0.63
5
5
3.0
1270.0
824.4
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
27
Spartan Bishops Chess Championships 2024 (Knights)
2024/05/04
2024/05/05
Bojanala Platina (NBR)
Standard
60
0.83
5
5
4.0
1374.0
1383.0
Analysis
26
Mangaung Metro Chess 12-13 April 2024 (B)
2024/04/12
2024/04/13
Mangaung (FMB)
Standard
62
0.84
5
5
4.0
1350.3
1360.0
Analysis
25
Bloemfontein Highschool League 2024 (U17A)
2024/03/08
2024/03/08
Mangaung (FMB)
Rapid
15
0.39
5
4
1.0
1371.5
1382.9
Analysis
24
Grey College Team Championship 2024 (B)
2024/02/23
2024/02/24
Mangaung (FMB)
Standard
60
0.83
5
5
4.5
1279.7
1330.9
Analysis
23
Bloemfontein High School League 16 February 2024 (U15A)
2024/02/16
2024/02/16
Mangaung (FMB)
Rapid
15
0.39
5
5
5.0
1279.7
934.8
Analysis
22
Mangaung Metro Chess 10 February 2024 (B)
2024/02/10
2024/02/10
Mangaung (FMB)
Rapid
32
0.63
5
5
4.0
1279.7
934.8
Analysis
21
Kings & Queens Chess 27 January 2024 (B)
2024/01/27
2024/01/27
Mangaung (FMB)
Rapid
32
0.63
5
5
3.0
1270.0
824.4
Analysis
20
Morris Club Championship 2023
2023/07/28
2023/07/28
Mangaung (FMB)
Rapid
32
0.63
5
5
2.0
1290.6
693.4
Analysis
19
Inter Regional Chess Championship 2023 (U14)
2023/05/19
2023/05/20
Mangaung (FMB)
Standard
62
0.84
5
5
3.0
1296.8
1345.6
Analysis
18
2022 South African Junior Team Chess Championships (U14 Open)
2022/12/04
2022/12/08
4 Knights (4K)
Standard
120
1.00
7
6
3.5
1284.6
1350.7
Analysis
17
Mangaung Metro Chess 30 July 2022 (B)
2022/07/30
2022/07/30
Mangaung (FMB)
Rapid
32
0.63
5
5
1.0
1341.5
715.8
Analysis
16
Mangaung Metro Chess 22 January 2022 (B)
2022/01/22
2022/01/22
Mangaung (FMB)
Rapid
32
0.63
5
5
3.0
1358.2
668.2
Analysis
15
Mangaung Metro Chess February 2020 (D)
2020/02/21
2020/02/22
Mangaung (FMB)
Standard
62
0.84
5
5
3.5
1357.1
1348.8
Analysis
14
Mangaung Metro Chess 17-18 January 2020 (D)
2020/01/17
2020/01/18
Mangaung (FMB)
Standard
62
0.84
5
5
4.5
1439.7
1431.0
Analysis
13
2019 South African Junior Team Championships (U10D)
2020/01/04
2020/01/08
4 Knights (4K)
Standard
120
1.00
7
6
1.5
1439.7
1431.0
Analysis
12
Mangaung Metro Chess October 2019 (D)
2019/10/11
2019/10/12
Mangaung (FMB)
Standard
62
0.84
5
5
3.5
1461.5
1457.2
Analysis
11
Mangaung Metro July Trials 2019 (U10)
2019/07/19
2019/07/20
Mangaung (FMB)
Standard
62
0.84
5
5
5.0
1358.0
1349.9
Analysis
10
Mangaung Metro Chess 31 May to 1 June 2019 (E)
2019/05/31
2019/06/01
Mangaung (FMB)
Standard
62
0.84
5
5
4.0
1297.0
1286.5
Analysis
9
Inter Regional Chess Championship 2019 (U10)
2019/05/10
2019/05/11
Mangaung (FMB)
Standard
60
0.83
5
5
4.0
1221.6
1214.4
Analysis
8
Mangaung Metro Chess 15-16 March 2019 (E)
2019/03/15
2019/03/16
Mangaung (FMB)
Standard
62
0.84
5
5
4.0
1092.2
1071.0
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
34
25
1
8
25.5
75.0
212.5
1249.0
1461.5
White
17
12
1
4
12.5
73.5
200.0
1268.7
1468.7
Black
17
13
0
4
13.0
76.5
225.0
1229.4
1454.4
Standard
All
15
12
1
2
12.5
83.3
283.3
1274.0
1557.4
White
8
6
1
1
6.5
81.3
265.6
1276.1
1541.7
Black
7
6
0
1
6.0
85.7
303.6
1271.7
1575.2
Rapid
All
19
13
0
6
13.0
68.4
156.6
1229.3
1385.9
White
9
6
0
3
6.0
66.7
141.7
1262.0
1403.7
Black
10
7
0
3
7.0
70.0
170.0
1199.8
1369.8
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
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
139
87
9
43
91.5
65.8
134.5
1109.5
1244.1
White
70
45
5
20
47.5
67.9
151.8
1111.0
1262.8
Black
69
42
4
23
44.0
63.8
117.0
1108.1
1225.1
Standard
All
98
62
9
27
66.5
67.9
151.8
1098.2
1250.0
White
50
35
5
10
37.5
75.0
212.5
1084.4
1296.9
Black
48
27
4
17
29.0
60.4
88.5
1112.5
1201.1
Rapid
All
34
19
0
15
19.0
55.9
50.0
1194.2
1244.2
White
17
8
0
9
8.0
47.1
-25.0
1212.9
1187.9
Black
17
11
0
6
11.0
64.7
125.0
1175.5
1300.5
Blitz
All
7
6
0
1
6.0
85.7
303.6
857.8
1161.3
White
3
2
0
1
2.0
66.7
141.7
977.4
1119.1
Black
4
4
0
0
4.0
100.0
425.0
768.0
1193.0
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1090096009
Pelesa, O (Oratilwe)
4
4.0
4
0
0
100.0
1234.1
425.0
1659.1
View list
2
1100098157
De Villiers, H (Hj)
3
3.0
3
0
0
100.0
1372.2
425.0
1797.2
View list
3
1100111370
Steyn, J (Johannes)
3
3.0
3
0
0
100.0
1372.2
425.0
1797.2
View list
4
107064251
Kriel, R (Ruan)
3
2.0
2
0
1
66.7
1131.4
141.7
1273.1
View list
5
109086205
Lottering, JG (Gerhard)
3
1.0
1
0
2
33.3
987.9
-141.7
846.2
View list
6
108069747
Melville, J (Jason)
3
1.0
1
0
2
33.3
1078.8
-141.7
937.2
View list
7
1100106779
Colbert, A (Ashlynne)
2
2.0
2
0
0
100.0
1398.8
425.0
1823.8
View list
8
110086186
Boje, E (Ewald)
2
2.0
2
0
0
100.0
858.6
425.0
1283.6
View list
9
1090098147
Gouws, R (Ruan)
2
2.0
2
0
0
100.0
802.7
425.0
1227.7
View list
10
1100107768
Louw, D (Delvin)
2
2.0
2
0
0
100.0
1379.3
425.0
1804.3
View list
11
1110104291
Ross, E (Ebenezer)
2
2.0
2
0
0
100.0
1297.8
425.0
1722.8
View list
12
1080111367
Van Niekerk, A (Adrian)
2
2.0
2
0
0
100.0
1194.6
425.0
1619.6
View list
13
2100107772
Van Lill, A (Amore)
2
1.5
1
1
0
75.0
1398.8
212.5
1611.3
View list
14
1060105432
Alrich, A (Alsanio)
2
1.0
1
0
1
50.0
1349.8
0.0
1349.8
View list
15
209086927
Liversage, C (Corli)
2
1.0
1
0
1
50.0
1138.7
0.0
1138.7
View list
16
1080106777
Swanepoel, W (Wj)
2
0.0
0
0
2
0.0
940.3
-425.0
515.3
View list
17
1090143830
Weng, Q (Qi)
2
0.0
0
0
2
0.0
1274.8
-425.0
849.8
View list
18
1110100915
Daly, W (William)
1
1.0
1
0
0
100.0
980.4
425.0
1405.4
View list
19
1120158359
Collings, K (Keaton)
1
1.0
1
0
0
100.0
1290.6
425.0
1715.6
View list
20
1100098145
Breytenbach, R (Reynardt)
1
1.0
1
0
0
100.0
1357.1
425.0
1782.1
View list