PLAYER PAGE

Zeke Zwartz

1160150372
Cape Town (WCT)
Personal
Main rating
Rating 1555.8
K-factor 28
Floor 1123.5
Highest 1629.1 (2026-01-01)
Min/Max +/- allowed 90
Rating Change
()
Games 9
Score 6
We 3.92
SWe 2.08
Temp +/- 58.3
Penalties 0
Weight perform 1511.6
Final +/- +58.3
New Rating
()
Rating 1614.1
K-factor 28
Floor 1123.5
Highest 1629.1 (2026-01-01)
Min/Max +/- allowed 90
Standard rating
Rating 1567.9
K-factor 28
Floor 1105.5
Highest 1612.8 (2026-01-01)
Min/Max +/- allowed 92.1
Rating Change
()
Games 9
Score 6
We 4.19
SWe 1.81
Temp +/- 50.7
Penalties 0
Weight perform 1604.8
Final +/- +50.7
New Rating
()
Rating 1618.5
K-factor 28
Floor 1118.5
Highest 1618.5 (2026-04-01)
Min/Max +/- allowed 91.3
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 1430.7
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 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
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 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
2 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
3 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
4 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
5 COGH 2026 (U12) Rapid 2026-01-31 2026-02-01 Cape Town (WCT) 6 1612 6 4 1546.3 -4.9 Details
6 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
7 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
8 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
9 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
10 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
11 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
12 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
13 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
14 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
15 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
16 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
17 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
18 Steinitz Festival 2025 (U10) Rapid 2025-03-15 2025-03-15 Cape Town (WCT) 7 1407 7 4 1319 -7.1 Details
19 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
20 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
21 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
22 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
23 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
24 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
25 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
26 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
27 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
28 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
29 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
30 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
31 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
32 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
33 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
34 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
35 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
36 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
37 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
38 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
39 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
40 GPCA Rapid 2023 (U10) Rapid 2023-06-24 2023-06-24 Cape Town (WCT) 7 1286.1 7 3 1128.4 -14.4 Details
41 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
42 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
43 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
44 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 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 43
Wins 24
Draws 8
Losses 11
White 21
Black 22
White wins 11
Black wins 13
Score 28
Percent 65.1
Dp 128.5
AOR 1424.8
Performance 1553.2
Game statistics (History)
Games 247
Wins 149
Draws 28
Losses 70
White 125
Black 122
White wins 77
Black wins 72
Score 163
Percent 66
Dp 135.9
AOR 1308.6
Performance 1444.5
Rankings (Main)
National
Overall 1314
Gender 1188
Age group 78
Gender/Age 66
Provincial
Overall 402
Gender 358
Age group 25
Gender/Age 21
Regional
Overall 242
Gender 224
Age group 11
Gender/Age 11
Rankings (Standard)
National
Overall 1152
Gender 1042
Age group 70
Gender/Age 59
Provincial
Overall 342
Gender 303
Age group 23
Gender/Age 19
Regional
Overall 211
Gender 196
Age group 10
Gender/Age 10
Rankings (Rapid)
National
Overall 587
Gender 530
Age group 55
Gender/Age 42
Provincial
Overall 291
Gender 254
Age group 32
Gender/Age 21
Regional
Overall 150
Gender 140
Age group 17
Gender/Age 14
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 9
Score 6
Percent 66.7
Aor 1615.4
Dp 141.7
Prat 1757.1
Performance ()
Games 43
Score 28
Percent 65.1
Aor 1424.8
Dp 128.5
Prat 1553.2
Performance (12 months)
Games 89
Score 65
Percent 73
Aor 1385.4
Dp 195.8
Prat 1581.2
Performance (History)
Games 247
Score 163
Percent 66
Aor 1308.6
Dp 135.9
Prat 1444.5
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Akemdien, A (Alex) 6 4 2 CBC Rapid Chess Tournament 2024 (U8) COGH 2026 (U12) Details
Overall 2 Ramonyaluoe, M (Madalitso) 4 2 2 CBC Rapid Chess Tournament 2024 (U8) Cape Winelands Open 2025 (U10) Details
Overall 3 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 4 Marais, A (Alexander) 4 3 1 Western Cape PS Individuals Championship 2024 (U9 Boys) COGH 2026 (U12) Details
Overall 5 Chang, C (Caelem) 4 2 2 Laerskool Welgemoed Rapid 2025 (U10) Laerskool Welgemoed Rapid 2026 (U12) Details
Standard 1 Marais, A (Alexander) 3 2 1 Western Cape PS Individuals Championship 2024 (U9 Boys) Helderberg Chess Club Open 2026 (U11 Mixed) Details
Standard 2 Akemdien, A (Alex) 3 2 1 CT Metro North Schools Chess Individual Trials 2025 (U9 Open) Helderberg Chess Club Open 2025 (U9) Details
Standard 3 van Eck, I (Ian) 2 1 1 Helderberg Chess Club Open 2026 (U11 Mixed) CT Metro North Schools Chess Individual Trials 2026 (U11 Boys) Details
Standard 4 Van Der Merwe, S (Schalk Wolf) 2 1 1 North District School Trials 2024 (U9 Boys) CT Metro North Schools Chess Individual Trials 2026 (U11 Boys) Details
Standard 5 Baker, A (Andrew) 2 2 0 Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) Western Cape PS Individuals Championship 2024 (U9 Boys) Details
Rapid 1 Rogova, E (Emilia) 3 0 3 Laerskool Welgemoed Rapid 2023 (U8) Chas Everitt and MHI Attorneys Rapid 2023 (U8) Details
Rapid 2 Van Wyk, A (Alonzo) 3 2 1 Laerskool Welgemoed Rapid 2023 (U8) North District School Trials 2023 (U7 Boys) Details
Rapid 3 Akemdien, A (Alex) 3 2 1 CBC Rapid Chess Tournament 2024 (U8) COGH 2026 (U12) Details
Rapid 4 Chang, C (Caelem) 3 2 1 Laerskool Welgemoed Rapid 2025 (U10) Laerskool Welgemoed Rapid 2026 (U12) Details
Rapid 5 Horn, N (Nielen) 3 2 1 CBC Rapid Chess Tournament 2024 (U8) Laerskool Welgemoed Rapid 2025 (U10) Details