Chess South Africa
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Chess South Africa
Mendelsohn, DC (David)
Dob:
1955/10/05 (Adult)
Gender:
Male
Chess SA id:
155022650
FIDE id:
Region:
Tshwane (GTP)
Citizen:
RSA
Title(s):
Last active:
2024/05/21 (31 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
1641.4
Current Weighted rating
1638.6
Current Weighted performance
1525.1
Current official/published rating (highest between Raw, WR and WP)
1641.4
Current highest rating achieved
1879.0
Current floor (min rating allowed)
1379.0
Current K-factor
24
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)
±88.4
Current Raw change used (final)
0.0
Projected new Raw rating
1641.4
Projected new Weighed rating
1507.7
Projected new Weighted performance
1525.1
Projected new final Raw rating (if new WP > new Raw)
1641.4
Projected new highest rating
1879.0
Projected new floor
1379.0
Projected new K-facor
24
Projected new official/published rating (highest between new Raw, new WR and new WP)
1641.4
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
1624.4
Current Weighted rating
1631.1
Current Weighted performance
1525.1
Current official/published rating (highest between Raw, WR and WP)
1631.1
Current highest rating achieved
1879.0
Current floor (min rating allowed)
1379.0
Current K-factor
24
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)
±90.6
Current Raw change used (final)
0.0
Projected new Raw rating
1624.4
Projected new Weighed rating
1500.7
Projected new Weighted performance
1525.1
Projected new final Raw rating (if new WP > new Raw)
1624.4
Projected new highest rating
1879.0
Projected new floor
1379.0
Projected new K-facor
24
Projected new official/published rating (highest between new Raw, new WR and new WP)
1624.4
Projected effective change (new Official - current Official)
-6.7
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
1810.3
Current Weighted rating
1809.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1810.3
Current highest rating achieved
1879.0
Current floor (min rating allowed)
1379.0
Current K-factor
24
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)
±69.5
Current Raw change used (final)
0.0
Projected new Raw rating
1810.3
Projected new Weighed rating
1665.1
Projected new Weighted performance
122.5
Projected new final Raw rating (if new WP > new Raw)
1810.3
Projected new highest rating
1879.0
Projected new floor
1379.0
Projected new K-facor
24
Projected new official/published rating (highest between new Raw, new WR and new WP)
1810.3
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
1853.5
Current Weighted rating
1853.5
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1853.5
Current highest rating achieved
1879.0
Current floor (min rating allowed)
1379.0
Current K-factor
24
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)
±65.4
Current Raw change used (final)
0.0
Projected new Raw rating
1853.5
Projected new Weighed rating
1705.2
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1879.0
Projected new floor
1379.0
Projected new K-facor
24
Projected new official/published rating (highest between new Raw, new WR and new WP)
1853.5
Projected effective change (new Official - current Official)
=0.0
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
3
Randburg Chess Club Championship 2024
2024/04/09
2024/05/21
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
4.5
1645.9
1634.0
Analysis
2
1st Knights Open Tournament 2024 (A)
2024/03/23
2024/03/23
Johannesburg Metro (GJM)
Standard
60
0.83
5
0
0.0
1640.0
1625.4
Analysis
1
Randburg Chess Club New Year Swiss 2024
2024/02/06
2024/02/06
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
4.0
1640.0
1625.4
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
29
Randburg Chess Club Championship 2024
2024/04/09
2024/05/21
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
4.5
1645.9
1634.0
Analysis
28
1st Knights Open Tournament 2024 (A)
2024/03/23
2024/03/23
Johannesburg Metro (GJM)
Standard
60
0.83
5
0
0.0
1640.0
1625.4
Analysis
27
Randburg Chess Club New Year Swiss 2024
2024/02/06
2024/02/06
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
4.0
1640.0
1625.4
Analysis
26
Africawide Chess Championship 2023 (Open)
2023/11/03
2023/11/05
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
4.0
1621.4
1617.7
Analysis
25
Randburg Club Championships Swiss 2023
2023/08/29
2023/10/10
Johannesburg Metro (GJM)
Standard
90
0.94
7
6
2.5
1662.2
1661.1
Analysis
24
Randburg Winter Swiss 2023
2023/06/13
2023/07/25
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
5.0
1643.2
1640.5
Analysis
23
Randburg Autumn Swiss 2023
2023/04/11
2023/05/23
Johannesburg Metro (GJM)
Standard
90
0.94
7
5
3.0
1638.2
1635.0
Analysis
22
JMC 1 St Peters 2023 (A)
2023/03/18
2023/03/18
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.0
1623.7
1621.1
Analysis
21
Randburg New Year Swiss 2023
2023/01/31
2023/03/14
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
5.0
1623.7
1621.1
Analysis
20
Randburg Summer Swiss 2022
2022/10/25
2022/12/06
Johannesburg Metro (GJM)
Standard
90
0.94
7
6
4.0
1628.4
1627.8
Analysis
19
Randburg Club Championships Swiss 2022
2022/07/19
2022/09/06
Johannesburg Metro (GJM)
Standard
90
0.94
7
7
5.5
1621.9
1621.1
Analysis
18
Chessheroes Youth Day 2022 (A1)
2022/06/16
2022/06/18
Johannesburg Metro (GJM)
Standard
120
1.00
5
4
0.0
1653.6
1653.5
Analysis
17
2021 Lubowski Open Tournament (A)
2021/05/01
2021/05/02
Tshwane (GTP)
Standard
90
0.94
5
5
2.5
1668.7
1669.1
Analysis
16
Ekurhuleni Chess Kempton Park Open 2020 (A)
2020/11/21
2020/11/21
Ekurhuleni (GE)
Standard
60
0.83
5
5
1.5
1691.8
1697.2
Analysis
15
JNW Club - Trinityhouse Little Falls Open 2020 (A)
2020/03/14
2020/03/14
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
2.5
1710.2
1719.3
Analysis
14
The King`s Cup League 2020 (A)
2020/03/07
2020/03/07
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.0
1710.2
1719.3
Analysis
13
JNW Club - Trinityhouse Randpark Ridge Open 2020 (A)
2020/02/22
2020/02/22
Johannesburg Metro (GJM)
Standard
60
0.83
5
4
1.0
1781.3
1790.8
Analysis
12
Randburg Chess Club Autum Swiss 2020
2020/02/04
2020/03/10
Johannesburg Metro (GJM)
Standard
90
0.94
6
6
3.5
1710.2
1719.3
Analysis
11
JNW Club - Bryanston Open1 2020 (A)
2020/02/01
2020/02/01
Johannesburg Metro (GJM)
Standard
60
0.83
5
4
2.0
1781.3
1790.8
Analysis
10
The King`s Cup League 2019 (A)
2019/10/19
2019/10/19
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
3.5
1761.0
1767.0
Analysis
1
2
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
14
8
1
5
8.5
60.7
91.1
1554.6
1645.7
White
7
5
0
2
5.0
71.4
182.1
1563.5
1745.6
Black
7
3
1
3
3.5
50.0
0.0
1545.7
1545.7
Standard
All
14
8
1
5
8.5
60.7
91.1
1554.6
1645.7
White
7
5
0
2
5.0
71.4
182.1
1563.5
1745.6
Black
7
3
1
3
3.5
50.0
0.0
1545.7
1545.7
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
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
156
69
30
57
84.0
53.8
32.7
1597.5
1630.2
White
73
38
10
25
43.0
58.9
75.7
1576.8
1652.5
Black
83
31
20
32
41.0
49.4
-5.1
1615.8
1610.7
Standard
All
149
68
29
52
82.5
55.4
45.6
1588.8
1634.4
White
70
38
9
23
42.5
60.7
91.1
1577.0
1668.1
Black
79
30
20
29
40.0
50.6
5.4
1599.1
1604.5
Rapid
All
7
1
1
5
1.5
21.4
-242.9
1784.4
1541.5
White
3
0
1
2
0.5
16.7
-283.3
1571.1
1287.8
Black
4
1
0
3
1.0
25.0
-212.5
1944.4
1731.9
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
163015814
Kleyn, AE (Andrew)
8
4.0
2
4
2
50.0
1678.1
0.0
1678.1
View list
2
158022721
Metcalfe, AR (Allister)
8
2.5
2
1
5
31.3
1678.1
-159.4
1518.7
View list
3
170035526
Snyckers, FA (Frank)
4
4.0
4
0
0
100.0
1687.2
425.0
2112.2
View list
4
179057929
Essop, H (Haroon)
4
2.5
2
1
1
62.5
1637.8
106.3
1744.0
View list
5
174009090
Essop, R (Rashied)
4
1.5
1
1
2
37.5
1654.5
-106.3
1548.3
View list
6
1560115964
Van Der Berg, P (Pieter)
4
1.5
1
1
2
37.5
1647.8
-106.3
1541.6
View list
7
104053107
Govender, Y (Yaduvir)
3
2.5
2
1
0
83.3
1817.0
283.3
2100.3
View list
8
181035793
Sparks, SJW (Stephen)
3
2.5
2
1
0
83.3
1630.1
283.3
1913.4
View list
9
101050584
Mazibuko, K (Khanya)
3
1.0
0
2
1
33.3
1635.0
-141.7
1493.4
View list
10
159008414
Durow, NL (Neil)
3
0.5
0
1
2
16.7
1710.7
-283.3
1427.4
View list
11
103007373
Dinham, J (James)
3
0.0
0
0
3
0.0
1707.2
-425.0
1282.2
View list
12
1770144450
Boshoff, E (Ernst)
2
2.0
2
0
0
100.0
1625.2
425.0
2050.2
View list
13
1640119080
Goldberg, M (Mark)
2
2.0
2
0
0
100.0
1666.1
425.0
2091.1
View list
14
174027391
Ngakane, D (Dan)
2
2.0
2
0
0
100.0
1829.1
425.0
2254.1
View list
15
100072830
Offer, A (Asabi)
2
2.0
2
0
0
100.0
1711.0
425.0
2136.0
View list
16
203010232
Gardiner, N (Noa)
2
1.5
1
1
0
75.0
1702.5
212.5
1915.0
View list
17
202020794
Marais, N (Nina)
2
1.0
1
0
1
50.0
1768.5
0.0
1768.5
View list
18
187025727
Mpya, TM (Tshediso)
2
1.0
1
0
1
50.0
1805.5
0.0
1805.5
View list
19
102072832
Snyckers, A (Adam)
2
1.0
1
0
1
50.0
1643.0
0.0
1643.0
View list
20
187019959
Makoto, R (Rodwell)
2
0.5
0
1
1
25.0
1741.8
-212.5
1529.3
View list