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David Charles Mendelsohn

155022650
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1642.9
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1520.1
Final +/- 0
New Rating
()
Rating 1642.9
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Standard rating
Rating 1672.2
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1606.2
Final +/- 0
New Rating
()
Rating 1672.2
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Rapid rating
Rating 1737.7
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1299.3
Final +/- 0
New Rating
()
Rating 1737.7
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Blitz rating
Rating 1853.5
K-factor 24
Floor 1353.5
Highest 1853.5 (2019-09-01)
Min/Max +/- allowed 65.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1853.5
K-factor 24
Floor 1353.5
Highest 1853.5 (2019-09-01)
Min/Max +/- allowed 65.4
Rating Graph
Tournaments
No tournaments found.
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Chess Power House May Rapid 2026 (A) Rapid 2026-05-24 2026-05-24 Johannesburg Metro (GJM) 5 1660.8 5 3 1427.2 -17.9 Details
2 Randburg NY Swiss 2026 Standard 2026-02-10 2026-03-31 Johannesburg Metro (GJM) 8 1660.3 8 4.5 1661.8 0.4 Details
3 MCA Summer Heat Classic 2026 (Expert) Standard 2026-03-21 2026-03-21 Johannesburg Metro (GJM) 5 1660.4 4 1 1665.2 -0.1 Details
4 Randburg Chess Club New Year Rapid 2026 Rapid 2026-01-27 2026-02-03 Johannesburg Metro (GJM) 6 1676.1 3 2 1501.2 -5.9 Details
5 MCA Tshwane Welcome 2026 (A) Standard 2026-01-24 2026-01-24 Tshwane (GTP) 5 1676.1 4 1.5 1726 2.1 Details
6 2026 JMC Kick off Tournament (A) Standard 2026-02-01 2026-02-01 Johannesburg Metro (GJM) 5 1676.1 0 0 0 0 Details
7 Chess Power House Dec Rapid 2025 (A) Rapid 2025-12-16 2025-12-16 Johannesburg Metro (GJM) 5 1687.3 5 2 1462.5 -16.2 Details
8 Randburg Winter Swiss 2025 Standard 2025-07-29 2025-09-16 Johannesburg Metro (GJM) 8 1687.3 8 3 1484.5 -35.5 Details
9 Chess Power House Aug Open 2025 (Prestige) Standard 2025-08-16 2025-08-16 Ekurhuleni (GE) 5 1672.9 4 1.5 1839.7 12 Details
10 JMC - Trinity Randpark Ridge 2025 (A) Standard 2025-07-26 2025-07-26 Johannesburg Metro (GJM) 5 1701.3 4 2 1829 9.8 Details
11 Randburg Chess Club Winter Rapid 2025 Rapid 2025-07-15 2025-07-22 Johannesburg Metro (GJM) 6 1701.3 6 1.5 1261.5 -33.6 Details
12 Neil Savage Memorial Randburg Club Champs 2025 Standard 2025-05-06 2025-06-24 Johannesburg Metro (GJM) 8 1692.2 8 4.5 1735.1 7.5 Details
13 CPH May 2025 (A) Standard 2025-05-03 2025-05-03 Johannesburg Metro (GJM) 5 1709.9 4 0.5 1523.2 -14.8 Details
14 Randburg Chess Club New Year Swiss 2025 Standard 2025-02-11 2025-04-01 Johannesburg Metro (GJM) 8 1700.3 7 4.5 1756.2 7.9 Details
15 Chess Power House March Open 2025 (A) Standard 2025-03-22 2025-03-22 Johannesburg Metro (GJM) 5 1674 5 3 1820.7 13.6 Details
16 Gauteng Inter-Region at UJ 2024 (Adult+Senior) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1669.5 5 3 1709.4 3.8 Details
17 Randburg Summer Swiss 2024 Standard 2024-10-29 2024-11-26 Johannesburg Metro (GJM) 5 1663 5 3 1710.4 5.4 Details
18 Mzansi Summer Rapid 2024 (A) Rapid 2024-10-26 2024-10-26 Johannesburg Metro (GJM) 6 1615.6 5 3 1829 13.8 Details
19 Randburg Spring Swiss 2024 Standard 2024-08-20 2024-10-08 Johannesburg Metro (GJM) 7 1615.6 7 5.5 1769.3 25.7 Details
20 Randburg Chess Club Winter Swiss 2024 Standard 2024-06-11 2024-07-30 Johannesburg Metro (GJM) 7 1618.5 6 3.5 1598.9 -2.4 Details
21 Chess Power House July Open 2024 (A) Standard 2024-07-20 2024-07-20 Johannesburg Metro (GJM) 5 1641.4 5 1 1322.9 -31.7 Details
22 JMC Trinityhouse Randpark Ridge 2024 (A) Standard 2024-07-13 2024-07-13 Johannesburg Metro (GJM) 5 1641.4 5 2 1765.3 12.6 Details
23 Randburg Chess Club Championship 2024 Standard 2024-04-09 2024-05-21 Johannesburg Metro (GJM) 7 1645.9 7 4.5 1626.6 -3.8 Details
24 1st Knights Open Tournament 2024 (A) Standard 2024-03-23 2024-03-23 Johannesburg Metro (GJM) 5 1640 0 0 0 0 Details
25 Randburg Chess Club New Year Swiss 2024 Standard 2024-02-06 2024-02-06 Johannesburg Metro (GJM) 7 1640 7 4 1664.8 4.9 Details
26 Africawide Chess Championship 2023 (Open) Standard 2023-11-03 2023-11-05 Johannesburg Metro (GJM) 7 1621.4 7 4 1581.4 -5.3 Details
27 Randburg Club Championships Swiss 2023 Standard 2023-08-29 2023-10-10 Johannesburg Metro (GJM) 7 1662.2 6 2.5 1403.4 -34 Details
28 Randburg Winter Swiss 2023 Standard 2023-06-13 2023-07-25 Johannesburg Metro (GJM) 7 1643.2 7 5 1746.4 16.1 Details
29 Randburg Autumn Swiss 2023 Standard 2023-04-11 2023-05-23 Johannesburg Metro (GJM) 7 1638.2 5 3 1659.5 4.3 Details
30 Randburg New Year Swiss 2023 Standard 2023-01-31 2023-03-14 Johannesburg Metro (GJM) 7 1623.7 7 5 1744.8 19.5 Details
31 JMC 1 St Peters 2023 (A) Standard 2023-03-18 2023-03-18 Johannesburg Metro (GJM) 5 1623.7 5 2 1538.3 -7.6 Details
32 Randburg Summer Swiss 2022 Standard 2022-10-25 2022-12-06 Johannesburg Metro (GJM) 7 1628.4 6 4 1502.5 -4.1 Details
33 Randburg Club Championships Swiss 2022 Standard 2022-07-19 2022-09-06 Johannesburg Metro (GJM) 7 1621.9 7 5.5 1559.5 5.4 Details
34 Chessheroes Youth Day 2022 (A1) Classical 2022-06-16 2022-06-18 Johannesburg Metro (GJM) 5 1653.6 4 0 1357 -26.4 Details
35 2021 Lubowski Open Tournament (A) Standard 2021-05-01 2021-05-02 Tshwane (GTP) 5 1668.7 5 2.5 1559.3 -12.8 Details
36 Ekurhuleni Chess Kempton Park Open 2020 (A) Standard 2020-11-21 2020-11-21 Ekurhuleni (GE) 5 1691.8 5 1.5 1508.7 -19.3 Details
37 The King`s Cup League 2020 (A) Standard 2020-03-07 2020-03-07 Johannesburg Metro (GJM) 5 1710.2 5 3 1853.7 12.4 Details
38 Randburg Chess Club Autum Swiss 2020 Standard 2020-02-04 2020-03-10 Johannesburg Metro (GJM) 6 1710.2 6 3.5 1509.9 -20.6 Details
39 JNW Club - Trinityhouse Little Falls Open 2020 (A) Standard 2020-03-14 2020-03-14 Johannesburg Metro (GJM) 5 1710.2 5 2.5 1649.3 -7 Details
40 JNW Club - Trinityhouse Randpark Ridge Open 2020 (A) Standard 2020-02-22 2020-02-22 Johannesburg Metro (GJM) 5 1781.3 4 1 1261 -40.3 Details
41 JNW Club - Bryanston Open1 2020 (A) Standard 2020-02-01 2020-02-01 Johannesburg Metro (GJM) 5 1781.3 4 2 1532.3 -19.3 Details
42 The King`s Cup League 2019 (A) Standard 2019-10-19 2019-10-19 Johannesburg Metro (GJM) 5 1761 5 3.5 1926.4 16.9 Details
43 Randburg Chess Club Winter Swiss 2019 Standard 2019-07-30 2019-09-03 Johannesburg Metro (GJM) 6 1776.1 6 4 1723.7 -3.6 Details
44 The King`s Cup League - Stage 2 2019 (A) Standard 2019-09-07 2019-09-07 Johannesburg Metro (GJM) 5 1776.1 5 2 1652.1 -8.6 Details
45 JNW Club - Bryanston Open 2 2019 (A) Standard 2019-05-11 2019-05-11 Johannesburg Metro (GJM) 5 1773.3 5 2.5 1832.4 2.3 Details
46 2018 Gauteng North Open (A) Standard 2018-10-20 2018-10-21 Tshwane (GTP) 5 1792.7 5 3 1631 -16.1 Details
47 JNW Club - Maragon Open 2018 (A) Standard 2018-08-04 2018-08-04 Johannesburg Metro (GJM) 5 1810.2 5 3 1652.2 -14.4 Details
48 SWVG Arnold Classic Rapid & Blitz 2018 (Rapid Prestige) Rapid 2018-05-19 2018-05-20 Tshwane (GTP) 10 1834.9 7 1.5 1541.5 -20.3 Details
49 JNW Club - Linden Open 2018 (A) Standard 2018-04-14 2018-04-14 Johannesburg Metro (GJM) 5 1848 5 2.5 1728.5 -10.8 Details
50 Randburg Club - Summer Swiss 2018 Standard 2018-01-30 2018-03-13 Johannesburg Metro (GJM) 7 1853.5 5 3.5 1750.1 -0.6 Details
Game statistics ( )
Games 0
Wins 0
Draws 0
Losses 0
White 0
Black 0
White wins 0
Black wins 0
Score 0
Percent 0
Dp 0
AOR 0
Performance 0
Game statistics ()
Games 24
Wins 10
Draws 4
Losses 10
White 13
Black 11
White wins 8
Black wins 2
Score 12
Percent 50
Dp 0
AOR 1604.1
Performance 1604.1
Game statistics (History)
Games 269
Wins 114
Draws 51
Losses 104
White 132
Black 137
White wins 66
Black wins 48
Score 139.5
Percent 51.9
Dp 15.8
AOR 1617.2
Performance 1633
Rankings (Main)
National
Overall 810
Gender 756
Age group 81
Gender/Age 81
Provincial
Overall 289
Gender 268
Age group 30
Gender/Age 30
Regional
Overall 117
Gender 105
Age group 12
Gender/Age 12
Rankings (Standard)
National
Overall 623
Gender 585
Age group 62
Gender/Age 62
Provincial
Overall 219
Gender 206
Age group 23
Gender/Age 23
Regional
Overall 80
Gender 73
Age group 8
Gender/Age 8
Rankings (Rapid)
National
Overall 68
Gender 68
Age group 12
Gender/Age 12
Provincial
Overall 19
Gender 19
Age group 4
Gender/Age 4
Regional
Overall 9
Gender 9
Age group 1
Gender/Age 1
Rankings (Blitz)
National
Overall -1
Gender -1
Age group -1
Gender/Age -1
Provincial
Overall -1
Gender -1
Age group -1
Gender/Age -1
Regional
Overall -1
Gender -1
Age group -1
Gender/Age -1
Performance ( )
Games 0
Score 0
Percent 0
Aor 0
Dp 0
Prat 0
Performance ()
Games 24
Score 12
Percent 50
Aor 1604.1
Dp 0
Prat 1604.1
Performance (12 months)
Games 59
Score 26.5
Percent 44.9
Aor 1633.3
Dp -43.2
Prat 1590.1
Performance (History)
Games 269
Score 139.5
Percent 51.9
Aor 1617.2
Dp 15.8
Prat 1633
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Metcalfe, AR (Allister Richard) 11 3 8 Randburg Club - Summer Swiss 2018 Randburg Winter Swiss 2025 Details
Overall 2 Kleyn, AE (Andrew Edward) 10 5 5 The Outpost Chess Club Open 2018 (A) Randburg Spring Swiss 2024 Details
Overall 3 Snyckers, FA (Frank Alexander) 7 6 1 Randburg Club - Summer Swiss 2018 Randburg Winter Swiss 2025 Details
Overall 4 Essop, H (Haroon) 6 4 2 Randburg Club Championships Swiss 2022 Randburg Chess Club Winter Rapid 2025 Details
Overall 5 Van Der Berg, P (Pieter) 6 6 0 Randburg Winter Swiss 2023 Randburg NY Swiss 2026 Details
Standard 1 Metcalfe, AR (Allister Richard) 11 3 8 Randburg Club - Summer Swiss 2018 Randburg Winter Swiss 2025 Details
Standard 2 Kleyn, AE (Andrew Edward) 10 5 5 The Outpost Chess Club Open 2018 (A) Randburg Spring Swiss 2024 Details
Standard 3 Snyckers, FA (Frank Alexander) 7 6 1 Randburg Club - Summer Swiss 2018 Randburg Winter Swiss 2025 Details
Standard 4 Van Der Berg, P (Pieter) 6 6 0 Randburg Winter Swiss 2023 Randburg NY Swiss 2026 Details
Standard 5 Essop, H (Haroon) 5 4 1 Randburg Club Championships Swiss 2022 Neil Savage Memorial Randburg Club Champs 2025 Details