Chess South Africa
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Chess South Africa
Kotze, CJ (Christiaan)
Dob:
2007/05/07 (U18)
Gender:
Male
Chess SA id:
107052210
FIDE id:
14322587
Region:
Mangaung (FMB)
Citizen:
RSA
Title(s):
CM
Last active:
2024/05/05 (7 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
1645.6
Curent Weighted rating
1624.5
Curent Weighted performance
1566.7
Current official/published rating (highest between Raw, WR and WP)
1645.6
Current floor (min rating allowed)
1145.6
Current highest rating achieved
1645.6
Current K-factor
28
Games played this month
14
Score (S)
5.5
Expected score (We)
7.13
Difference (S-We)
-1.63
Current Raw change (no limits, including tournament time weight)
-43.2
Current min/max change allowed (with limits)
±87.9
Current Raw change used (final)
-43.2
Projected new Raw rating
1602.4
Projected new Weighed rating
1623.5
Projected new Weighted performance
1566.7
Projected new official/published rating (highest between new Raw, new WR and new WP)
1623.5
Projected effective change (new Official - current Official)
-22.1
Projected new highest rating
1645.6
Projected new floor
1145.6
Projected new K-facor
28
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
1648.2
Curent Weighted rating
1626.0
Curent Weighted performance
1503.8
Current official/published rating (highest between Raw, WR and WP)
1648.2
Current floor (min rating allowed)
1148.2
Current highest rating achieved
1648.2
Current K-factor
28
Games played this month
14
Score (S)
5.5
Expected score (We)
6.82
Difference (S-We)
-1.32
Current Raw change (no limits, including tournament time weight)
-37.0
Current min/max change allowed (with limits)
±87.6
Current Raw change used (final)
-37.0
Projected new Raw rating
1611.2
Projected new Weighed rating
1625.6
Projected new Weighted performance
1503.8
Projected new official/published rating (highest between new Raw, new WR and new WP)
1625.6
Projected effective change (new Official - current Official)
-22.6
Projected new highest rating
1648.2
Projected new floor
1148.2
Projected new K-facor
28
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
1583.3
Curent Weighted rating
1478.2
Curent Weighted performance
1549.2
Current official/published rating (highest between Raw, WR and WP)
1583.3
Current floor (min rating allowed)
1083.3
Current highest rating achieved
1583.3
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)
±96.0
Current Raw change used (final)
0.0
Projected new Raw rating
1583.3
Projected new Weighed rating
1489.6
Projected new Weighted performance
1549.2
Projected new official/published rating (highest between new Raw, new WR and new WP)
1583.3
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1583.3
Projected new floor
1083.3
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
1273.3
Curent Weighted rating
1273.3
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1273.3
Current floor (min rating allowed)
1083.3
Current highest rating achieved
1325.0
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)
±149.4
Current Raw change used (final)
0.0
Projected new Raw rating
1273.3
Projected new Weighed rating
1273.3
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1273.3
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1325.0
Projected new floor
1083.3
Projected new K-facor
36
Tournaments
History
Tournament:
Spartan Bishops Chess Championships 2024 (Rooks)
Start:
2024/05/04
End:
2024/05/05
Host:
NBR
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
3.5
Main rating:
1645.6
Rating gain/loss:
-12.1
Type rating:
1648.2
Rating gain/loss:
-13.2
Analysis
Tournament:
South African Junior Closed Chess Championship 2024 (U18 Open)
Start:
2024/04/27
End:
2024/05/01
Host:
GE
Type:
Standard
Time:
120
Time weight:
1.00
Rounds:
9
Games:
9
Score:
2.0
Main rating:
1645.6
Rating gain/loss:
-31.1
Type rating:
1648.2
Rating gain/loss:
-23.8
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
7
Spartan Bishops Chess Championships 2024 (Rooks)
2024/05/04
2024/05/05
Bojanala Platina (NBR)
Standard
60
0.83
5
5
3.5
1645.6
1648.2
Analysis
6
South African Junior Closed Chess Championship 2024 (U18 Open)
2024/04/27
2024/05/01
Ekurhuleni (GE)
Standard
120
1.00
9
9
2.0
1645.6
1648.2
Analysis
5
Bloemfontein Highschool League 2024 (U19A)
2024/03/08
2024/03/08
Mangaung (FMB)
Rapid
15
0.39
5
4
4.0
1640.8
1571.1
Analysis
4
Grey College Team Championship 2024 (A)
2024/02/23
2024/02/24
Mangaung (FMB)
Standard
60
0.83
5
5
4.0
1618.2
1635.3
Analysis
3
Bloemfontein High School League 16 February 2024 (U19A+U19B)
2024/02/16
2024/02/16
Mangaung (FMB)
Rapid
15
0.39
5
5
4.5
1618.2
1532.7
Analysis
2
Mangaung Metro Chess 10 February 2024 (A)
2024/02/10
2024/02/10
Mangaung (FMB)
Rapid
32
0.63
5
5
2.5
1618.2
1532.7
Analysis
1
Kings & Queens Chess 27 January 2024 (A)
2024/01/27
2024/01/27
Mangaung (FMB)
Rapid
32
0.63
5
5
3.5
1626.8
1547.8
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
38
Spartan Bishops Chess Championships 2024 (Rooks)
2024/05/04
2024/05/05
Bojanala Platina (NBR)
Standard
60
0.83
5
5
3.5
1645.6
1648.2
Analysis
37
South African Junior Closed Chess Championship 2024 (U18 Open)
2024/04/27
2024/05/01
Ekurhuleni (GE)
Standard
120
1.00
9
9
2.0
1645.6
1648.2
Analysis
36
Bloemfontein Highschool League 2024 (U19A)
2024/03/08
2024/03/08
Mangaung (FMB)
Rapid
15
0.39
5
4
4.0
1640.8
1571.1
Analysis
35
Grey College Team Championship 2024 (A)
2024/02/23
2024/02/24
Mangaung (FMB)
Standard
60
0.83
5
5
4.0
1618.2
1635.3
Analysis
34
Bloemfontein High School League 16 February 2024 (U19A+U19B)
2024/02/16
2024/02/16
Mangaung (FMB)
Rapid
15
0.39
5
5
4.5
1618.2
1532.7
Analysis
33
Mangaung Metro Chess 10 February 2024 (A)
2024/02/10
2024/02/10
Mangaung (FMB)
Rapid
32
0.63
5
5
2.5
1618.2
1532.7
Analysis
32
Kings & Queens Chess 27 January 2024 (A)
2024/01/27
2024/01/27
Mangaung (FMB)
Rapid
32
0.63
5
5
3.5
1626.8
1547.8
Analysis
31
Bloemfontein HS League 27 October 2023 (U19)
2023/10/27
2023/10/27
Cape Winelands (WCW)
Rapid
15
0.39
5
5
4.5
1617.4
1426.5
Analysis
30
Bloemfontein HS League 13 October 2023 (U17+U19)
2023/10/13
2023/10/13
Mangaung (FMB)
Rapid
20
0.47
5
5
5.0
1617.4
1426.5
Analysis
29
Morris Club Championship 2023
2023/07/28
2023/07/28
Mangaung (FMB)
Rapid
32
0.63
5
5
3.0
1628.2
1411.1
Analysis
28
9th Piet van Zyl Chess Festival 2023 (A)
2023/05/26
2023/05/27
Mangaung (FMB)
Standard
90
0.94
5
5
3.0
1626.4
1617.2
Analysis
27
Inter Regional Chess Championship 2023 (U18)
2023/05/19
2023/05/20
Mangaung (FMB)
Standard
62
0.84
5
5
4.0
1626.4
1617.2
Analysis
26
Bloemfontein Highschool League 24 Feb 2023 (U19A)
2023/02/24
2023/02/24
Mangaung (FMB)
Rapid
17
0.42
5
5
5.0
1599.0
1378.0
Analysis
25
Grey College Team Championship 2023 (A)
2023/02/03
2023/02/04
Mangaung (FMB)
Standard
60
0.83
5
5
4.5
1599.0
1601.5
Analysis
24
2022 South African Junior Team Chess Championships (U18 Open)
2022/12/04
2022/12/08
4 Knights (4K)
Standard
120
1.00
7
7
4.0
1584.0
1588.4
Analysis
23
Bloemfontein School League 2022 (U19)
2022/08/12
2022/08/12
Mangaung (FMB)
Rapid
35
0.66
5
5
4.0
1596.9
1382.7
Analysis
22
Mangaung Metro Chess 30 July 2022 (A)
2022/07/30
2022/07/30
Mangaung (FMB)
Rapid
32
0.63
5
5
5.0
1576.1
1337.7
Analysis
21
Bloemfontein Schools League 2022 (U19+Open)
2022/02/25
2022/02/25
Mangaung (FMB)
Rapid
22
0.50
5
5
5.0
1537.5
1302.8
Analysis
20
Grey College Team Championship 2022 (A)
2022/02/18
2022/02/19
Mangaung (FMB)
Standard
60
0.83
5
5
5.0
1537.5
1556.7
Analysis
19
Mangaung Metro Chess 22 January 2022 (A)
2022/01/22
2022/01/22
Mangaung (FMB)
Rapid
32
0.63
5
5
4.5
1512.1
1257.8
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
38
19
10
9
24.0
63.2
111.8
1496.4
1608.2
White
18
8
4
6
10.0
55.6
47.2
1562.1
1609.3
Black
20
11
6
3
14.0
70.0
170.0
1437.3
1607.3
Standard
All
19
6
7
6
9.5
50.0
0.0
1582.3
1582.3
White
10
4
3
3
5.5
55.0
42.5
1590.6
1633.1
Black
9
2
4
3
4.0
44.4
-47.2
1573.1
1525.9
Rapid
All
19
13
3
3
14.5
76.3
223.7
1410.4
1634.1
White
8
4
1
3
4.5
56.3
53.1
1526.4
1579.5
Black
11
9
2
0
10.0
90.9
347.7
1326.1
1673.8
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
198
117
40
41
137.0
69.2
163.1
1363.5
1526.6
White
98
59
20
19
69.0
70.4
173.5
1364.5
1537.9
Black
100
58
20
22
68.0
68.0
153.0
1362.5
1515.5
Standard
All
133
66
34
33
83.0
62.4
105.5
1380.4
1485.9
White
68
37
17
14
45.5
66.9
143.7
1371.8
1515.5
Black
65
29
17
19
37.5
57.7
65.4
1389.5
1454.9
Rapid
All
59
48
5
6
50.5
85.6
302.5
1321.2
1623.7
White
27
20
3
4
21.5
79.6
251.9
1357.0
1608.9
Black
32
28
2
2
29.0
90.6
345.3
1290.9
1636.2
Blitz
All
6
3
1
2
3.5
58.3
70.8
1402.8
1473.7
White
3
2
0
1
2.0
66.7
141.7
1266.0
1407.6
Black
3
1
1
1
1.5
50.0
0.0
1539.7
1539.7
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
171017444
Lebenya, MJ (Masilonyana)
6
5.5
5
1
0
91.7
1412.6
354.2
1766.8
View list
2
108086187
Rossouw, J (Johrne)
4
3.5
3
1
0
87.5
1591.3
318.8
1910.0
View list
3
107076014
Van Rooyen, H (Hanro)
4
3.5
3
1
0
87.5
1457.7
318.8
1776.5
View list
4
104030572
Posholi, K (Kamohelo)
4
0.5
0
1
3
12.5
1395.2
-318.8
1076.4
View list
5
202026287
Mutambala, B (Baraka)
3
3.0
3
0
0
100.0
1408.5
425.0
1833.5
View list
6
1900111822
Peters, V (Vaughan)
3
3.0
3
0
0
100.0
1449.3
425.0
1874.3
View list
7
1070143843
Badenhorst, M (Matthew Peter)
3
2.5
2
1
0
83.3
1617.7
283.3
1901.0
View list
8
102023635
Modirwa, O (Ofentse)
3
1.5
0
3
0
50.0
1436.2
0.0
1436.2
View list
9
101030919
Pretorius, M (Marco)
3
1.0
1
0
2
33.3
1276.6
-141.7
1135.0
View list
10
194020362
Manaba, T (Thembani)
3
1.0
0
2
1
33.3
1468.1
-141.7
1326.4
View list
11
101025290
Motaung, L (Lehlohonolo)
3
1.0
0
2
1
33.3
1390.4
-141.7
1248.7
View list
12
197000143
Acho, CT (Christiaan)
3
0.0
0
0
3
0.0
1410.7
-425.0
985.7
View list
13
181002839
Botes, D (Dion)
2
2.0
2
0
0
100.0
1458.3
425.0
1883.3
View list
14
102053241
Buchner, E (Eduard)
2
2.0
2
0
0
100.0
1431.0
425.0
1856.0
View list
15
1060107761
Fumba, I (Immanuel)
2
2.0
2
0
0
100.0
1619.9
425.0
2044.9
View list
16
1060191972
Goosen, C (Chris)
2
2.0
2
0
0
100.0
1629.5
425.0
2054.5
View list
17
107069734
Jordaan, W (Wian)
2
2.0
2
0
0
100.0
1582.2
425.0
2007.2
View list
18
1060111831
Mitchell, V (Vanadium)
2
2.0
2
0
0
100.0
1567.2
425.0
1992.2
View list
19
106053115
Moolman, A (Arno)
2
2.0
2
0
0
100.0
1629.5
425.0
2054.5
View list
20
101084890
Nophale, N (Ntokozo)
2
2.0
2
0
0
100.0
1416.9
425.0
1841.9
View list