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

PLAYER PAGE

David Charles Mendelsohn

155022650
Johannesburg Metro (GJM)
Personal
Main rating
Rating 1635.9
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 1609.8
Final +/- 0
New Rating
()
Rating 1635.9
K-factor 24
Floor 1353.5
Highest 1853.5 (2018-03-01)
Min/Max +/- allowed 65.4
Standard rating
Rating 1648.9
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 1627.7
Final +/- 0
New Rating
()
Rating 1648.9
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 1243.1
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 Neil Savage Memorial Randburg Chess Club Champs 2026 Standard 2026-07-28 2026-09-15 Johannesburg Metro (GJM) 8 1596.6 7 5.5 1802.6 39.2 Details
2 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
3 Randburg Autumn Swiss 2026 Standard 2026-05-05 2026-06-23 Johannesburg Metro (GJM) 8 1642.9 7 3 1494.9 -28.2 Details
4 Ekurhuleni 2nd Trial 2026 (B) Standard 2026-06-20 2026-06-20 Ekurhuleni (GE) 5 1642.9 4 2 1544.6 -9.1 Details
5 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
6 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
7 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
8 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
9 MCA Tshwane Welcome 2026 (A) Standard 2026-01-24 2026-01-24 Tshwane (GTP) 5 1676.1 4 1.5 1726 2.1 Details
10 2026 JMC Kick off Tournament (A) Standard 2026-02-01 2026-02-01 Johannesburg Metro (GJM) 5 1676.1 0 0 0 0 Details
11 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
12 Randburg Winter Swiss 2025 Standard 2025-07-29 2025-09-16 Johannesburg Metro (GJM) 8 1687.3 8 3 1484.5 -35.5 Details
13 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
14 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
15 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
16 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
17 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
18 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
19 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
20 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
21 Randburg Summer Swiss 2024 Standard 2024-10-29 2024-11-26 Johannesburg Metro (GJM) 5 1663 5 3 1710.4 5.4 Details
22 Mzansi Summer Rapid 2024 (A) Rapid 2024-10-26 2024-10-26 Johannesburg Metro (GJM) 6 1615.6 5 3 1829 13.8 Details
23 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
24 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
25 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
26 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
27 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
28 1st Knights Open Tournament 2024 (A) Standard 2024-03-23 2024-03-23 Johannesburg Metro (GJM) 5 1640 0 0 0 0 Details
29 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
30 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
31 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
32 Randburg Winter Swiss 2023 Standard 2023-06-13 2023-07-25 Johannesburg Metro (GJM) 7 1643.2 7 5 1746.4 16.1 Details
33 Randburg Autumn Swiss 2023 Standard 2023-04-11 2023-05-23 Johannesburg Metro (GJM) 7 1638.2 5 3 1659.5 4.3 Details
34 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
35 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
36 Randburg Summer Swiss 2022 Standard 2022-10-25 2022-12-06 Johannesburg Metro (GJM) 7 1628.4 6 4 1502.5 -4.1 Details
37 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
38 Chessheroes Youth Day 2022 (A1) Classical 2022-06-16 2022-06-18 Johannesburg Metro (GJM) 5 1653.6 4 0 1357 -26.4 Details
39 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
40 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
41 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
42 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
43 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
44 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
45 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
46 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
47 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
48 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
49 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
50 2018 Gauteng North Open (A) Standard 2018-10-20 2018-10-21 Tshwane (GTP) 5 1792.7 5 3 1631 -16.1 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 47
Wins 21
Draws 7
Losses 19
White 25
Black 22
White wins 14
Black wins 7
Score 24.5
Percent 52.1
Dp 18.1
AOR 1606
Performance 1624.1
Game statistics (History)
Games 292
Wins 125
Draws 54
Losses 113
White 144
Black 148
White wins 72
Black wins 53
Score 152
Percent 52.1
Dp 17.5
AOR 1616.5
Performance 1634
Rankings (Main)
National
Overall 867
Gender 810
Age group 71
Gender/Age 71
Provincial
Overall 313
Gender 291
Age group 24
Gender/Age 24
Regional
Overall 123
Gender 110
Age group 9
Gender/Age 9
Rankings (Standard)
National
Overall 741
Gender 693
Age group 58
Gender/Age 58
Provincial
Overall 282
Gender 263
Age group 23
Gender/Age 23
Regional
Overall 107
Gender 96
Age group 9
Gender/Age 9
Rankings (Rapid)
National
Overall 70
Gender 70
Age group 11
Gender/Age 11
Provincial
Overall 20
Gender 20
Age group 4
Gender/Age 4
Regional
Overall 10
Gender 10
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 47
Score 24.5
Percent 52.1
Aor 1606
Dp 18.1
Prat 1624.1
Performance (12 months)
Games 52
Score 26.5
Percent 51
Aor 1600.4
Dp 8.2
Prat 1608.6
Performance (History)
Games 292
Score 152
Percent 52.1
Aor 1616.5
Dp 17.5
Prat 1634
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Metcalfe, AR (Allister Richard) 13 4 9 Randburg Club - Summer Swiss 2018 Neil Savage Memorial Randburg Chess Club Champs 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) 13 4 9 Randburg Club - Summer Swiss 2018 Neil Savage Memorial Randburg Chess Club Champs 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 Essop, R (Rashied) 6 4 2 Randburg Chess Club Autum Swiss 2020 Neil Savage Memorial Randburg Chess Club Champs 2026 Details
Standard 5 Sparks, SJW (Stephen) 6 3 3 Randburg Club Championships Swiss 2022 Randburg Autumn Swiss 2026 Details