Surname or Chess SA id..
Chess SA Region AOC Mzansi 2026

PLAYER PAGE

David Charles Mendelsohn

155022650
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1596.6
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 1552.4
Final +/- 0
New Rating
()
Rating 1596.6
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Standard rating
Rating 1606.8
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 1589.1
Final +/- 0
New Rating
()
Rating 1606.8
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 1280
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 JMC Trinityhouse Randpark Ridge 2026 (A) Standard 2026-06-27 2026-06-27 Johannesburg Metro (GJM) 5 1642.9 5 2 1714.7 6.9 Details
2 Randburg Autumn Swiss 2026 Standard 2026-05-05 2026-06-23 Johannesburg Metro (GJM) 8 1642.9 7 3 1494.9 -28.2 Details
3 Ekurhuleni 2nd Trial 2026 (B) Standard 2026-06-20 2026-06-20 Ekurhuleni (GE) 5 1642.9 4 2 1544.6 -9.1 Details
4 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
5 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
6 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
7 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
8 MCA Tshwane Welcome 2026 (A) Standard 2026-01-24 2026-01-24 Tshwane (GTP) 5 1676.1 4 1.5 1726 2.1 Details
9 2026 JMC Kick off Tournament (A) Standard 2026-02-01 2026-02-01 Johannesburg Metro (GJM) 5 1676.1 0 0 0 0 Details
10 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
11 Randburg Winter Swiss 2025 Standard 2025-07-29 2025-09-16 Johannesburg Metro (GJM) 8 1687.3 8 3 1484.5 -35.5 Details
12 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
13 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
14 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
15 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
16 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
17 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
18 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
19 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
20 Randburg Summer Swiss 2024 Standard 2024-10-29 2024-11-26 Johannesburg Metro (GJM) 5 1663 5 3 1710.4 5.4 Details
21 Mzansi Summer Rapid 2024 (A) Rapid 2024-10-26 2024-10-26 Johannesburg Metro (GJM) 6 1615.6 5 3 1829 13.8 Details
22 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
23 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
24 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
25 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
26 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
27 1st Knights Open Tournament 2024 (A) Standard 2024-03-23 2024-03-23 Johannesburg Metro (GJM) 5 1640 0 0 0 0 Details
28 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
29 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
30 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
31 Randburg Winter Swiss 2023 Standard 2023-06-13 2023-07-25 Johannesburg Metro (GJM) 7 1643.2 7 5 1746.4 16.1 Details
32 Randburg Autumn Swiss 2023 Standard 2023-04-11 2023-05-23 Johannesburg Metro (GJM) 7 1638.2 5 3 1659.5 4.3 Details
33 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
34 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
35 Randburg Summer Swiss 2022 Standard 2022-10-25 2022-12-06 Johannesburg Metro (GJM) 7 1628.4 6 4 1502.5 -4.1 Details
36 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
37 Chessheroes Youth Day 2022 (A1) Classical 2022-06-16 2022-06-18 Johannesburg Metro (GJM) 5 1653.6 4 0 1357 -26.4 Details
38 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
39 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
40 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
41 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
42 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
43 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
44 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
45 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
46 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
47 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
48 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
49 2018 Gauteng North Open (A) Standard 2018-10-20 2018-10-21 Tshwane (GTP) 5 1792.7 5 3 1631 -16.1 Details
50 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
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 40
Wins 16
Draws 6
Losses 18
White 22
Black 18
White wins 12
Black wins 4
Score 19
Percent 47.5
Dp -21.2
AOR 1614.1
Performance 1592.9
Game statistics (History)
Games 285
Wins 120
Draws 53
Losses 112
White 141
Black 144
White wins 70
Black wins 50
Score 146.5
Percent 51.4
Dp 11.9
AOR 1617.9
Performance 1629.8
Rankings (Main)
National
Overall 1105
Gender 1016
Age group 92
Gender/Age 92
Provincial
Overall 394
Gender 356
Age group 34
Gender/Age 34
Regional
Overall 154
Gender 134
Age group 13
Gender/Age 13
Rankings (Standard)
National
Overall 940
Gender 862
Age group 76
Gender/Age 76
Provincial
Overall 341
Gender 309
Age group 30
Gender/Age 30
Regional
Overall 130
Gender 116
Age group 13
Gender/Age 13
Rankings (Rapid)
National
Overall 67
Gender 67
Age group 11
Gender/Age 11
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 40
Score 19
Percent 47.5
Aor 1614.1
Dp -21.2
Prat 1592.9
Performance (12 months)
Games 57
Score 25.5
Percent 44.7
Aor 1628.3
Dp -44.7
Prat 1583.6
Performance (History)
Games 285
Score 146.5
Percent 51.4
Aor 1617.9
Dp 11.9
Prat 1629.8
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Metcalfe, AR (Allister Richard) 12 4 8 Randburg Club - Summer Swiss 2018 Randburg Autumn Swiss 2026 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 Van Der Berg, P (Pieter) 6 6 0 Randburg Winter Swiss 2023 Randburg NY Swiss 2026 Details
Overall 5 Sparks, SJW (Stephen) 6 3 3 Randburg Club Championships Swiss 2022 Randburg Autumn Swiss 2026 Details
Standard 1 Metcalfe, AR (Allister Richard) 12 4 8 Randburg Club - Summer Swiss 2018 Randburg Autumn Swiss 2026 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 Sparks, SJW (Stephen) 6 3 3 Randburg Club Championships Swiss 2022 Randburg Autumn Swiss 2026 Details