PLAYER PAGE

Zeke Zwartz

1160150372
Cape Town (WCT)
Personal
Main rating
Rating 1617.5
K-factor 28
Floor 1123.5
Highest 1629.1 (2026-01-01)
Min/Max +/- allowed 90
Rating Change
()
Games 7
Score 5
We 4.24
SWe 0.76
Temp +/- 21.2
Penalties 0
Weight perform 1628.5
Final +/- +21.2
New Rating
()
Rating 1638.8
K-factor 28
Floor 1138.8
Highest 1638.8 (2026-07-01)
Min/Max +/- allowed 88.7
Standard rating
Rating 1610.8
K-factor 28
Floor 1118.5
Highest 1618.5 (2026-04-01)
Min/Max +/- allowed 91.3
Rating Change
()
Games 7
Score 5
We 4.24
SWe 0.76
Temp +/- 21.3
Penalties 0
Weight perform 1628.5
Final +/- +21.3
New Rating
()
Rating 1632.1
K-factor 28
Floor 1132.1
Highest 1632.1 (2026-07-01)
Min/Max +/- allowed 89.6
Rapid rating
Rating 1437.2
K-factor 32
Floor 953.9
Highest 1624.4 (2023-02-01)
Min/Max +/- allowed 90.6
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1392.7
Final +/- 0
New Rating
()
Rating 1437.2
K-factor 32
Floor 953.9
Highest 1624.4 (2023-02-01)
Min/Max +/- allowed 90.6
Blitz rating
Rating 1200
K-factor 36
Floor 700
Highest 1200 (2018-10-01)
Min/Max +/- allowed 165.8
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 0
Final +/- 0
New Rating
()
Rating 1200
K-factor 36
Floor 700
Highest 1200 (2018-10-01)
Min/Max +/- allowed 165.8
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 South African Open Championship 2026 (U11 Boys) Classical 2026-07-02 2026-07-05 Cape Town (WCT) 7 1617.5 7 5 1703.5 21.2 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 2026 WCSC PS Individual Championship (U11 Boys) Standard 2026-05-16 2026-05-17 Overberg (WOS) 6 1614.1 6 3.5 1547.9 -10.6 Details
2 Table View Chess Club Junior Chess Championship 2026 (U11) Standard 2026-05-09 2026-05-09 Cape Town (WCT) 5 1614.1 5 4 1708.9 12.2 Details
3 Moja Chess Extravaganza 2026 (U10) Standard 2026-04-25 2026-04-26 Cape Town (WCT) 5 1614.1 5 3.5 1627.6 1.8 Details
4 South African Junior Closed Chess Championship 2026 (U10 Open) Classical 2026-03-28 2026-04-02 Bojanala Platina (NBR) 9 1555.8 9 6 1757.1 58.3 Details
5 Steinitz Chess Festival 2026 (U12) Rapid 2026-03-21 2026-03-21 Cape Town (WCT) 5 1580.9 5 3.5 1430.4 -10.9 Details
6 CT Metro Schools Individual Closed 2026 (U11 Boys) Standard 2026-03-07 2026-03-08 Cape Town (WCT) 6 1580.9 6 3.5 1495 -14.2 Details
7 Laerskool Welgemoed Rapid 2026 (U12) Rapid 2026-02-14 2026-02-14 Cape Town (WCT) 6 1612 6 3.5 1358.1 -19.1 Details
8 CT Metro North Schools Chess Individual Trials 2026 (U11 Boys) Standard 2026-02-07 2026-02-08 Cape Town (WCT) 6 1612 6 4.5 1625.2 1.3 Details
9 COGH 2026 (U12) Rapid 2026-01-31 2026-02-01 Cape Town (WCT) 6 1612 6 4 1546.3 -4.9 Details
10 Helderberg Chess Club Open 2026 (U11 Mixed) Standard 2026-01-17 2026-01-17 Cape Town (WCT) 5 1629.1 5 3 1535.2 -8.3 Details
11 2025 Mzansi Individual Championships (U10 Open) Classical 2025-12-17 2025-12-20 Nelson Mandela Bay (ENM) 6 1531.4 6 5 1724.1 27.4 Details
12 2025 Mzansi Inter Provincial Team Championships (U10 Combined) Standard 2025-12-15 2025-12-17 Nelson Mandela Bay (ENM) 6 1531.4 6 5 1735.9 24.1 Details
13 Six Gun Grill Summer Sport Festival Chess Championships 2025 (Individual U11 Boys) Rapid 2025-12-09 2025-12-09 Cape Winelands (WCW) 5 1531.4 5 3.5 1477.5 -3.7 Details
14 Six Gun Grill Summer Sport Festival Chess Championships 2025 (Team U11) Rapid 2025-12-08 2025-12-08 Cape Winelands (WCW) 5 1531.4 4 4 1725.3 9.9 Details
15 Cape Town Metro North Top Schools 2025 (U11) Standard 2025-08-01 2025-08-02 Cape Town (WCT) 5 1517.2 5 4.5 1598.3 8.8 Details
16 Cape Winelands Open 2025 (U10) Standard 2025-07-19 2025-07-19 Cape Winelands (WCW) 5 1461.6 4 3 1632.3 13.4 Details
17 Helderberg Chess Club Open 2025 (U9) Standard 2025-06-07 2025-06-07 Cape Town (WCT) 5 1423.7 5 3.5 1485.9 5.5 Details
18 Cape Town Chess Junior League 2025 (U12) Standard 2025-05-10 2025-05-31 Cape Town (WCT) 6 1423.7 5 4 1510.3 9.3 Details
19 Western Cape Schools Individual Championship 2025 (U9 Boys) Standard 2025-05-17 2025-05-18 Cape Winelands (WCW) 6 1391.2 6 4.5 1563.8 20.3 Details
20 South African Junior Closed Chess Championships 2025 (U10 Open) Classical 2025-03-31 2025-04-05 Cape Winelands (WCW) 9 1402.1 9 3.5 1374.6 -6.8 Details
21 Cape Town Open Chess Festival 2025 (U10) Standard 2025-03-22 2025-03-23 Cape Town (WCT) 6 1407 6 3 1337 -8.1 Details
22 Steinitz Festival 2025 (U10) Rapid 2025-03-15 2025-03-15 Cape Town (WCT) 7 1407 7 4 1319 -7.1 Details
23 CT Metro Schools Individual Closed 2025 (U9 Open) Standard 2025-03-01 2025-03-02 Cape Town (WCT) 6 1407 6 4 1507.6 12.1 Details
24 Cape of Good Hope Open 2025 (U10) Rapid 2025-02-22 2025-02-22 Cape Town (WCT) 6 1371 6 3 1293.4 -5.9 Details
25 Laerskool Welgemoed Rapid 2025 (U10) Rapid 2025-02-15 2025-02-15 Cape Town (WCT) 6 1371 6 5.5 1590.5 18.9 Details
26 CT Metro North Schools Chess Individual Trials 2025 (U9 Open) Standard 2025-02-08 2025-02-09 Cape Town (WCT) 6 1371 6 4 1430.1 7 Details
27 2025 Kraaifontein Open Chess Championships (Rapid U10) Rapid 2025-01-04 2025-01-04 Cape Town (WCT) 6 1363.5 6 4 1411.3 4.1 Details
28 Laerskool Welgemoed Rapid 2024 (U10) Rapid 2024-10-19 2024-10-19 Cape Town (WCT) 6 1348.1 6 4 1379.8 2.5 Details
29 UCT Open Chess Championship 2024 (U10) Rapid 2024-10-12 2024-10-13 Cape Town (WCT) 6 1348.1 6 4 1427.4 6.1 Details
30 CBC Rapid Chess Tournament 2024 (U8) Rapid 2024-09-14 2024-09-14 Cape Town (WCT) 6 1312 6 5 1547.7 20.2 Details
31 CT District North Top Schools 2024 (U9 Mixed) Rapid 2024-07-27 2024-07-27 Cape Town (WCT) 5 1293.9 4 3 1471.8 10.1 Details
32 Cape Town Chess Federation Closed Chess Championships 2024 (U10) Standard 2024-06-15 2024-06-15 Cape Town (WCT) 5 1308.2 5 2 1234.9 -8 Details
33 Cape Town Junior League Finals 2024 (U13 Open A) Rapid 2024-05-18 2024-05-18 Cape Town (WCT) 5 1302.4 4 1 1012.2 -13.9 Details
34 Western Cape PS Individuals Championship 2024 (U9 Boys) Standard 2024-05-04 2024-05-05 West Coast (WCU) 6 1302.4 6 3.5 1393.9 9.3 Details
35 Cape Town Junior League - Qualifier 2 2024 (U13) Rapid 2024-04-20 2024-04-20 Cape Town (WCT) 6 1302.4 6 4 1403.6 7.8 Details
36 Cape Town Junior League Qualifier 2024 (U13 Open) Rapid 2024-04-06 2024-04-06 Cape Town (WCT) 6 1335.8 1 0 825.6 -7 Details
37 Strategize to Win 2024 (E) Standard 2024-04-13 2024-04-14 Cape Town (WCT) 5 1335.8 5 2 1227.7 -11.7 Details
38 Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) Standard 2024-03-02 2024-03-03 Cape Town (WCT) 6 1332.2 6 3.5 1347.9 2 Details
39 North District School Trials 2024 (U9 Boys) Standard 2024-02-03 2024-02-03 Cape Town (WCT) 5 1286.5 5 4 1538.6 25.2 Details
40 Rylib Summer Slam 2023 (Development) Rapid 2023-12-12 2023-12-12 Cape Town (WCT) 6 1293.6 6 3 1235.1 -3.9 Details
41 Chas Everitt and MHI Attorneys Rapid 2023 (U8) Rapid 2023-11-04 2023-11-04 Cape Town (WCT) 6 1266.4 6 5 1463.3 15.2 Details
42 Western Cape Closed Championship 2023 (U8) Rapid 2023-09-23 2023-09-23 Cape Town (WCT) 6 1261.9 6 4 1295.5 2.7 Details
43 CT Metro District North Top Schools Chess 2023 (U9 Mixed) Rapid 2023-07-29 2023-07-29 Cape Town (WCT) 3 1260.2 2 1 1295 1 Details
44 GPCA Rapid 2023 (U10) Rapid 2023-06-24 2023-06-24 Cape Town (WCT) 7 1286.1 7 3 1128.4 -14.4 Details
45 Western Cape PS Individuals 2023 (U7 Boys) Standard 2023-05-05 2023-05-06 Cape Town (WCT) 6 1284.3 6 4 1289.9 0.8 Details
46 Cape Town Metro Schools Chess Closed Individuals 2023 (U7 Mixed) Rapid 2023-03-04 2023-03-04 Cape Town (WCT) 5 1300.5 4 2 1140.7 -8.9 Details
47 North District School Trials 2023 (U7 Boys) Rapid 2023-02-04 2023-02-04 Cape Town (WCT) 6 1200 4 4 1625 24.2 Details
48 Laerskool Welgemoed Rapid 2023 (U8) Rapid 2023-02-11 2023-02-11 Cape Town (WCT) 5 1200 5 5 1605.9 26.4 Details
Game statistics ( )
Games 7
Wins 4
Draws 2
Losses 1
White 3
Black 4
White wins 2
Black wins 2
Score 5
Percent 71.4
Dp 182.1
AOR 1521.4
Performance 1703.5
Game statistics ()
Games 66
Wins 38
Draws 12
Losses 16
White 33
Black 33
White wins 17
Black wins 21
Score 44
Percent 66.7
Dp 141.7
AOR 1444.5
Performance 1586.1
Game statistics (History)
Games 270
Wins 163
Draws 32
Losses 75
White 137
Black 133
White wins 83
Black wins 80
Score 179
Percent 66.3
Dp 138.5
AOR 1323.3
Performance 1461.8
Rankings (Main)
National
Overall 961
Gender 887
Age group 50
Gender/Age 43
Provincial
Overall 292
Gender 264
Age group 17
Gender/Age 15
Regional
Overall 204
Gender 189
Age group 10
Gender/Age 10
Rankings (Standard)
National
Overall 915
Gender 843
Age group 54
Gender/Age 47
Provincial
Overall 266
Gender 241
Age group 16
Gender/Age 14
Regional
Overall 186
Gender 173
Age group 10
Gender/Age 10
Rankings (Rapid)
National
Overall 679
Gender 609
Age group 72
Gender/Age 57
Provincial
Overall 320
Gender 280
Age group 38
Gender/Age 25
Regional
Overall 159
Gender 149
Age group 18
Gender/Age 16
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 7
Score 5
Percent 71.4
Aor 1521.4
Dp 182.1
Prat 1703.5
Performance ()
Games 66
Score 44
Percent 66.7
Aor 1444.5
Dp 141.7
Prat 1586.1
Performance (12 months)
Games 92
Score 66
Percent 71.7
Aor 1420.9
Dp 184.8
Prat 1605.7
Performance (History)
Games 270
Score 179
Percent 66.3
Aor 1323.3
Dp 138.5
Prat 1461.8
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Akemdien, A (Alex) 7 5 2 CBC Rapid Chess Tournament 2024 (U8) Table View Chess Club Junior Chess Championship 2026 (U11) Details
Overall 2 Baker, A (Andrew) 4 3 1 Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) 2026 WCSC PS Individual Championship (U11 Boys) Details
Overall 3 Klopper, E (Elbe) 4 4 0 Cape Town Metro Schools Chess Closed Individuals 2023 (U7 Mixed) Strategize to Win 2024 (E) Details
Overall 4 Van Der Merwe, S (Schalk Wolf) 4 2 2 North District School Trials 2024 (U9 Boys) CT Metro North Schools Chess Individual Trials 2026 (U11 Boys) Details
Overall 5 Chang, C (Caelem) 4 2 2 Laerskool Welgemoed Rapid 2025 (U10) Laerskool Welgemoed Rapid 2026 (U12) Details
Standard 1 Akemdien, A (Alex) 4 3 1 CT Metro North Schools Chess Individual Trials 2025 (U9 Open) Table View Chess Club Junior Chess Championship 2026 (U11) Details
Standard 2 Venter, M (Michael) 3 2 1 CT Metro Schools Individual Closed 2025 (U9 Open) 2026 WCSC PS Individual Championship (U11 Boys) Details
Standard 3 Marais, A (Alexander) 3 2 1 Western Cape PS Individuals Championship 2024 (U9 Boys) Helderberg Chess Club Open 2026 (U11 Mixed) Details
Standard 4 Baker, A (Andrew) 3 2 1 Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) 2026 WCSC PS Individual Championship (U11 Boys) Details
Standard 5 Beukes, B (Benjamin) 2 1 1 Western Cape PS Individuals Championship 2024 (U9 Boys) Table View Chess Club Junior Chess Championship 2026 (U11) Details
Rapid 1 Akemdien, A (Alex) 3 2 1 CBC Rapid Chess Tournament 2024 (U8) COGH 2026 (U12) Details
Rapid 2 Rogova, E (Emilia) 3 0 3 Laerskool Welgemoed Rapid 2023 (U8) Chas Everitt and MHI Attorneys Rapid 2023 (U8) Details
Rapid 3 Chang, C (Caelem) 3 2 1 Laerskool Welgemoed Rapid 2025 (U10) Laerskool Welgemoed Rapid 2026 (U12) Details
Rapid 4 Esterhuizen, C (Christiaan) 3 1 2 Laerskool Welgemoed Rapid 2023 (U8) North District School Trials 2023 (U7 Boys) Details
Rapid 5 Van Wyk, A (Alonzo) 3 2 1 Laerskool Welgemoed Rapid 2023 (U8) North District School Trials 2023 (U7 Boys) Details