Chess South Africa
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Chess South Africa
Jonker, MD (Matthew)
Dob:
1987/02/27 (Adult)
Gender:
Male
Chess SA id:
187014313
FIDE id:
Region:
Johannesburg Metro (GJM)
Citizen:
RSA
Title(s):
FI
Last active:
2023/09/02 (253 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
2020.5
Curent Weighted rating
2024.6
Curent Weighted performance
1491.3
Current official/published rating (highest between Raw, WR and WP)
2024.6
Current floor (min rating allowed)
1541.0
Current highest rating achieved
2041.0
Current K-factor
20
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)
±51.5
Current Raw change used (final)
0.0
Projected new Raw rating
2020.5
Projected new Weighed rating
2023.9
Projected new Weighted performance
1491.3
Projected new official/published rating (highest between new Raw, new WR and new WP)
2023.9
Projected effective change (new Official - current Official)
-0.6
Projected new highest rating
2041.0
Projected new floor
1541.0
Projected new K-facor
20
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
2041.0
Curent Weighted rating
2041.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
2041.0
Current floor (min rating allowed)
1541.0
Current highest rating achieved
2041.0
Current K-factor
20
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)
±50.0
Current Raw change used (final)
0.0
Projected new Raw rating
2041.0
Projected new Weighed rating
2041.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
2041.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
2041.0
Projected new floor
1541.0
Projected new K-facor
20
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
2017.4
Curent Weighted rating
2021.5
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
2021.5
Current floor (min rating allowed)
1541.0
Current highest rating achieved
2041.0
Current K-factor
20
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)
±51.7
Current Raw change used (final)
0.0
Projected new Raw rating
2017.4
Projected new Weighed rating
2020.8
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
2020.8
Projected effective change (new Official - current Official)
-0.7
Projected new highest rating
2041.0
Projected new floor
1541.0
Projected new K-facor
20
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
1933.8
Curent Weighted rating
1949.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1949.0
Current floor (min rating allowed)
1541.0
Current highest rating achieved
2041.0
Current K-factor
20
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)
±58.3
Current Raw change used (final)
0.0
Projected new Raw rating
1933.8
Projected new Weighed rating
1946.2
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1946.2
Projected effective change (new Official - current Official)
-2.8
Projected new highest rating
2041.0
Projected new floor
1541.0
Projected new K-facor
20
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
5
Mzansi Spring Rapid 2023
2023/09/02
2023/09/02
Johannesburg Metro (GJM)
Rapid
15
0.39
7
6
4.0
2023.8
2025.6
Analysis
4
JMC Blitz - Higher Ground 2023
2023/06/17
2023/06/17
Johannesburg Metro (GJM)
Blitz
8
0.25
7
7
5.5
2029.6
1953.8
Analysis
3
Mzansi Open Blitz 2023
2023/04/29
2023/04/29
Johannesburg Metro (GJM)
Blitz
5
0.18
9
9
5.0
2035.7
2006.4
Analysis
2
CPH Chess Clubs Challenge 2022 (A)
2022/11/12
2022/11/12
Johannesburg Metro (GJM)
Rapid
20
0.47
7
6
2.5
2037.1
2041.0
Analysis
1
JMC Blitz Open 8 August 2022 (A)
2022/08/08
2022/08/08
Johannesburg Metro (GJM)
Blitz
5
0.18
9
9
6.0
2041.0
2041.0
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
37
21
4
12
23.0
62.2
103.4
1733.4
1836.8
White
19
11
3
5
12.5
65.8
134.2
1727.4
1861.6
Black
18
10
1
7
10.5
58.3
70.8
1739.8
1810.6
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
12
6
1
5
6.5
54.2
35.4
1919.8
1955.2
White
6
3
1
2
3.5
58.3
70.8
1888.0
1958.8
Black
6
3
0
3
3.0
50.0
0.0
1951.6
1951.6
Blitz
All
25
15
3
7
16.5
66.0
136.0
1643.9
1779.9
White
13
8
2
3
9.0
69.2
163.5
1653.2
1816.7
Black
12
7
1
4
7.5
62.5
106.3
1633.9
1740.1
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
101023373
Mlahleki, V (Vusimuzi)
2
1.0
1
0
1
50.0
2036.4
0.0
2036.4
View list
2
109069449
Boheim, E (Eugene)
1
1.0
1
0
0
100.0
2035.7
425.0
2460.7
View list
3
211085191
Naidoo, K (Kajol)
1
1.0
1
0
0
100.0
2029.6
425.0
2454.6
View list
4
199080988
Mthombeni, S (Sanele)
1
1.0
1
0
0
100.0
2037.1
425.0
2462.1
View list
5
105090611
Mnyasta, T (Tezihano)
1
1.0
1
0
0
100.0
2035.7
425.0
2460.7
View list
6
1090098574
Gounder, A (Arun)
1
1.0
1
0
0
100.0
2023.8
425.0
2448.8
View list
7
110086011
Felix, R (Raphael)
1
1.0
1
0
0
100.0
2035.7
425.0
2460.7
View list
8
1730113414
Deysel, R (Ryno)
1
1.0
1
0
0
100.0
2035.7
425.0
2460.7
View list
9
173004580
Chikwava, R (Ronald)
1
1.0
1
0
0
100.0
2023.8
425.0
2448.8
View list
10
1070107792
Jaitas, K (Kittisak)
1
1.0
1
0
0
100.0
2023.8
425.0
2448.8
View list
11
109086379
Jacobs, CN (Calvin Nicholas)
1
1.0
1
0
0
100.0
2023.8
425.0
2448.8
View list
12
1110098631
Kruger, T (Tobias)
1
1.0
1
0
0
100.0
2029.6
425.0
2454.6
View list
13
1090152468
Kojetin, C (Connor)
1
1.0
1
0
0
100.0
2029.6
425.0
2454.6
View list
14
173032618
Rossouw, AJ (Andries)
1
1.0
1
0
0
100.0
2029.6
425.0
2454.6
View list
15
1850155763
Saad, A (Ali)
1
1.0
1
0
0
100.0
2029.6
425.0
2454.6
View list
16
101015487
Khumalo, KB (Keith)
1
0.5
0
1
0
50.0
2037.1
0.0
2037.1
View list
17
183020215
Maliga, N (Norman)
1
0.5
0
1
0
50.0
2029.6
0.0
2029.6
View list
18
108076196
Potgieter, E (Edward)
1
0.5
0
1
0
50.0
2035.7
0.0
2035.7
View list
19
167036725
Sullivan, J (Jason)
1
0.5
0
1
0
50.0
2035.7
0.0
2035.7
View list
20
192023485
Mnguni, JD (Jakob)
1
0.0
0
0
1
0.0
2035.7
-425.0
1610.7
View list