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

PLAYER PAGE

Yul Siebritz

1110139048
West Coast (WCU)
Personal
Main rating
Rating 1411.2
K-factor 32
Floor 963.4
Highest 1466.9 (2024-02-01)
Min/Max +/- allowed 113
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1379.6
Final +/- 0
New Rating
()
Rating 1411.2
K-factor 32
Floor 963.4
Highest 1466.9 (2024-02-01)
Min/Max +/- allowed 113.4
Standard rating
Rating 1385.2
K-factor 32
Floor 924.6
Highest 1424.6 (2026-03-01)
Min/Max +/- allowed 120.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1339.5
Final +/- 0
New Rating
()
Rating 1385.2
K-factor 32
Floor 924.6
Highest 1424.6 (2026-03-01)
Min/Max +/- allowed 120.4
Rapid rating
Rating 1483.5
K-factor 32
Floor 1030.8
Highest 1549.5 (2024-02-01)
Min/Max +/- allowed 100.8
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1362
Final +/- 0
New Rating
()
Rating 1483.5
K-factor 32
Floor 1030.8
Highest 1549.5 (2024-02-01)
Min/Max +/- allowed 100.8
Blitz rating
Rating 1375.9
K-factor 32
Floor 903.4
Highest 1418 (2024-04-01)
Min/Max +/- allowed 121.5
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1131.7
Final +/- 0
New Rating
()
Rating 1375.9
K-factor 32
Floor 903.4
Highest 1418 (2024-04-01)
Min/Max +/- allowed 121.5
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 Western Cape Women's Championship 2026 (Intermediate) Standard 2026-08-09 2026-08-10 West Coast (WCU) 5 1411.2 5 3.5 1568 30.3 Details
2 South African Open Championship 2026 (U15 Boys) Classical 2026-07-02 2026-07-05 Cape Town (WCT) 7 1415.5 7 3.5 1223.3 -34.7 Details
3 Lower West Coast Top Schools 2026 (U15) Rapid 2026-05-30 2026-05-30 West Coast (WCU) 5 1398.8 4 3.5 1581.2 16.7 Details
4 2026 WCSC HS Individual Championship (U15 Boys) Standard 2026-05-02 2026-05-03 Eden (WEG) 6 1440.7 6 1.5 1191.4 -46.7 Details
5 Moja Chess Extravaganza 2026 (U16) Standard 2026-04-25 2026-04-26 Cape Town (WCT) 5 1440.7 5 2.5 1478.3 4.8 Details
6 West Coast Schools Prestige Individuals Championships 2026 (U15 Boys) Standard 2026-02-28 2026-03-07 West Coast (WCU) 6 1416.8 3 3 1658.3 23.9 Details
7 West Coast League 2026 (B) Rapid 2026-02-07 2026-02-07 West Coast (WCU) 5 1418.3 4 2 1443.9 0.9 Details
8 West Coast Schools Chess Grand Challenge League 2025 (HS Super) Rapid 2025-11-08 2025-11-08 West Coast (WCU) 5 1423 5 2.5 1391.4 -1.7 Details
9 Basil Ellman Annual Rapid 2025 (Seniors) Rapid 2025-09-20 2025-09-20 West Coast (WCU) 5 1429.8 5 2 1170.2 -18.5 Details
10 Western Cape Women’s Championship 2025 (Sunday Rapid) Rapid 2025-08-10 2025-08-10 West Coast (WCU) 5 1421.6 5 3 1521.8 5.2 Details
11 Lower West Coast Top Schools 2025 (U17) Rapid 2025-06-14 2025-06-14 West Coast (WCU) 6 1457.1 6 2.5 1201.4 -16.9 Details
12 Deep Blue Open 2025 (A) Standard 2025-06-21 2025-06-21 West Coast (WCU) 5 1457.1 5 2 1373.6 -7.6 Details
13 West Coast And Mykonos Open 2025 (Open) Standard 2025-05-02 2025-05-04 West Coast (WCU) 6 1438.9 6 4 1524.3 11.4 Details
14 Western Cape Schools Individual Championship 2025 (U15 Boys) Standard 2025-04-26 2025-04-27 West Coast (WCU) 6 1409.6 6 4 1565.9 18.3 Details
15 West Coast Schools Chess Prestige 2025 (U15 Boys) Standard 2025-03-08 2025-03-08 West Coast (WCU) 6 1416.1 6 4 1379.7 -4 Details
16 Lower West Coast Prestige 2025 (U15 Boys) Rapid 2025-02-22 2025-02-22 West Coast (WCU) 5 1417.1 5 3.5 1399.1 -0.6 Details
17 Lambertsbay Chess Club Crayfish Classic 2024 Standard 2024-12-16 2024-12-16 West Coast (WCU) 5 1442.1 5 2.5 1289 -15.6 Details
18 West Coast Grand Challange League 2024 (PS Champions) Rapid 2024-10-26 2024-10-26 West Coast (WCU) 5 1417.7 5 4.5 1648.6 15.3 Details
19 Western Cape Women’s Championship 2024 (Advanced) Classical 2024-08-08 2024-08-11 West Coast (WCU) 6 1432.1 6 3 1369.4 -9 Details
20 South African Open Chess Championship 2024 (C) Standard 2024-07-04 2024-07-07 Ethekwini (KED) 7 1463.4 7 4 1339.4 -19.5 Details
21 Lambertsbay Youth Open 2024 (Elite) Rapid 2024-06-17 2024-06-17 West Coast (WCU) 5 1454 5 4 1553.2 7.1 Details
22 Basil Ellman Annual Rapid 2024 (Elite) Rapid 2024-06-08 2024-06-08 West Coast (WCU) 5 1454 5 2.5 1441.9 -1.3 Details
23 Deep Blue CC May Blitz 2024 Blitz 2024-05-22 2024-05-22 West Coast (WCU) 7 1384.2 7 4 1388.4 0 Details
24 West Coast & Mykonos Open 2024 (Open) Standard 2024-05-17 2024-05-19 West Coast (WCU) 6 1384.2 6 3 1290.1 -12.2 Details
25 Lower West Top Schools 2024 (U18) Rapid 2024-05-11 2024-05-11 West Coast (WCU) 5 1384.2 4 3.5 1592.1 10.9 Details
26 Western Cape PS Individuals Championship 2024 (U13 Boys) Standard 2024-05-04 2024-05-05 West Coast (WCU) 6 1384.2 6 3.5 1622.8 27.7 Details
27 Lambersbaai Open 2024 (A) Rapid 2024-05-01 2024-05-01 West Coast (WCU) 5 1384.2 5 5 1624.6 17.3 Details
28 Deep Blue Chess Club April Blitz 2024 Blitz 2024-04-24 2024-04-24 West Coast (WCU) 7 1392 5 4 1544.5 3.1 Details
29 Deep Blue Open 2024 (Elite) Rapid 2024-04-13 2024-04-13 West Coast (WCU) 5 1392 5 1.5 1204.3 -15 Details
30 Deep Blue March Blitz 2024 Blitz 2024-03-27 2024-03-27 West Coast (WCU) 5 1392 5 5 1714.1 7 Details
31 Western Cape Inter Region Cup 2024 (U14 Boys) Standard 2024-03-23 2024-03-24 Overberg (WOS) 5 1407.7 4 1 1305.8 -9 Details
32 Western Cape Inter Region Cup 2024 (Blitz) Blitz 2024-03-22 2024-03-22 Overberg (WOS) 7 1407.7 7 2 1222.3 -5.3 Details
33 West Coast Schools Chess Prestige Championships 2024 (U13 Boys) Rapid 2024-03-09 2024-03-09 West Coast (WCU) 5 1407.7 5 3.5 1476.7 4.6 Details
34 Lower West Coast Schools Chess Prestige 2024 (U13 Boys) Rapid 2024-02-17 2024-02-17 West Coast (WCU) 5 1367.6 4 4 1645.5 15.9 Details
35 Deep Blue February Blitz Juniors 2024 Blitz 2024-02-28 2024-02-28 West Coast (WCU) 7 1367.6 7 6.5 1592.7 6.6 Details
36 Longacres Top 10 Battle January 2024 Rapid 2024-01-27 2024-01-27 West Coast (WCU) 5 1345.1 5 4 1444.5 3.6 Details
37 Deep Blue CC Blitz 2024 (Juniors) Blitz 2024-01-27 2024-01-27 West Coast (WCU) 7 1345.1 7 7 1639.3 8.9 Details
38 Clanwilliam Chess Club Open 2023 (B) Rapid 2023-12-02 2023-12-02 West Coast (WCU) 5 1315.4 5 4 1534.4 16.4 Details
39 Deep Blue Open Team 2023 Rapid 2023-11-04 2023-11-04 West Coast (WCU) 5 1280.6 5 4 1548.2 19.6 Details
40 West Coast Primary Schools Grand Challenge League 2023 (Primary School) Rapid 2023-10-21 2023-10-21 West Coast (WCU) 5 1265.2 5 3.5 1446.1 8.6 Details
41 Western Cape Closed Championship 2023 (D) Standard 2023-09-24 2023-09-25 Cape Town (WCT) 6 1322.3 6 3 1345.4 3 Details
42 Deep Blue Open 2023 (Elite) Rapid 2023-09-16 2023-09-16 West Coast (WCU) 5 1322.3 5 1 1043.1 -19.5 Details
43 Basil Ellman Rapid 2023 (C) Rapid 2023-09-30 2023-09-30 West Coast (WCU) 5 1322.3 5 1 1099.7 -15.3 Details
44 CW Top Schools 2023 (Advanced) Standard 2023-08-11 2023-08-13 West Coast (WCU) 6 1350.4 6 2 1233.6 -15.6 Details
45 Pedro Booyse Top Schools 2023 (U13) Standard 2023-07-29 2023-07-29 West Coast (WCU) 5 1333.1 5 3 1439.5 9.6 Details
46 Youth Day 1 2023 (Elite) Rapid 2023-06-17 2023-06-17 West Coast (WCU) 5 1378.3 5 2 1327.4 -3.3 Details
47 West Coast Open 2023 (Elite) Standard 2023-05-20 2023-06-03 West Coast (WCU) 5 1378.3 5 2 1211.6 -15.9 Details
48 Lower West Coast Top Schools Championships 2023 (U13) Rapid 2023-06-10 2023-06-10 West Coast (WCU) 5 1378.3 5 3 1295.8 -6.3 Details
49 Western Cape PS Individuals 2023 (U13 Boys) Standard 2023-05-05 2023-05-06 Cape Town (WCT) 6 1328.9 6 3.5 1543.2 24.9 Details
50 St Helenabaai Open 2023 (Elite) Rapid 2023-05-13 2023-05-13 West Coast (WCU) 5 1328.9 5 2 1356.6 2.4 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 34
Wins 17
Draws 5
Losses 12
White 17
Black 17
White wins 10
Black wins 7
Score 19.5
Percent 57.4
Dp 62.5
AOR 1349.8
Performance 1412.3
Game statistics (History)
Games 354
Wins 190
Draws 25
Losses 139
White 179
Black 175
White wins 102
Black wins 88
Score 202.5
Percent 57.2
Dp 61.2
AOR 1320.1
Performance 1381.3
Rankings (Main)
National
Overall 3380
Gender 2876
Age group 455
Gender/Age 367
Provincial
Overall 1007
Gender 820
Age group 131
Gender/Age 101
Regional
Overall 78
Gender 62
Age group 13
Gender/Age 11
Rankings (Standard)
National
Overall 3477
Gender 2893
Age group 504
Gender/Age 407
Provincial
Overall 1000
Gender 777
Age group 139
Gender/Age 103
Regional
Overall 66
Gender 51
Age group 11
Gender/Age 9
Rankings (Rapid)
National
Overall 487
Gender 442
Age group 74
Gender/Age 64
Provincial
Overall 220
Gender 196
Age group 29
Gender/Age 25
Regional
Overall 30
Gender 25
Age group 5
Gender/Age 4
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 34
Score 19.5
Percent 57.4
Aor 1349.8
Dp 62.5
Prat 1412.3
Performance (12 months)
Games 44
Score 24
Percent 54.5
Aor 1343.8
Dp 38.6
Prat 1382.4
Performance (History)
Games 354
Score 202.5
Percent 57.2
Aor 1320.1
Dp 61.2
Prat 1381.3
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Ellman, A (Anne-Belle) 9 3 6 Youth Day 1 2023 (Elite) Lambertsbay Youth Open 2024 (Elite) Details
Overall 2 Siebritz, N (Noelle) 7 5 2 Deep Blue CC Blitz 2024 (Juniors) Deep Blue Open 2025 (A) Details
Overall 3 Schroeder, L (Liam) 6 2 4 Deep Blue Chess Club 2022 (Open) West Coast And Mykonos Open 2025 (Open) Details
Overall 4 Stoffberg, M (Mikaeel) 5 3 2 Deep Blue February Blitz Juniors 2024 Lower West Coast Top Schools 2025 (U17) Details
Overall 5 Wehr, C (Corbin) 5 2 3 Deep Blue Open Team 2023 Deep Blue CC May Blitz 2024 Details
Standard 1 Prinsloo, L (Lyle) 3 3 0 Western Cape Closed Championship 2022 (U12) Western Cape PS Individuals Championship 2024 (U13 Boys) Details
Standard 2 Siebritz, N (Noelle) 3 2 1 South African Open Chess Championship 2024 (C) Deep Blue Open 2025 (A) Details
Standard 3 Schroeder, L (Liam) 2 2 0 West Coast Open 2022 (Open) West Coast And Mykonos Open 2025 (Open) Details
Standard 4 Smith, Z (Zion) 2 0 2 Western Cape PS Individuals 2023 (U13 Boys) Western Cape PS Individuals Championship 2024 (U13 Boys) Details
Standard 5 Duiker, P (Phillip) 2 1 1 West Coast Open 2022 (Open) West Coast Open 2023 (Elite) Details
Rapid 1 Klaasens, J (Jemaine) 5 2 3 Lower West Coast Schools Prestige 2022 (U11 Boys) Clanwilliam Chess Club Open 2023 (B) Details
Rapid 2 Koopman, T (Tyler) 4 3 1 Lower West Coast Primary Schools Prestige Championships 2023 (U13 Boys) West Coast Primary Schools Grand Challenge League 2023 (Primary School) Details
Rapid 3 Schroeder, L (Liam) 4 0 4 Deep Blue Chess Club 2022 (Open) Deep Blue Open 2023 (Elite) Details
Rapid 4 Arendse, Q (Quinwinne) 4 3 1 St Helenabaai Open 2023 (Elite) Lower West Coast Prestige 2025 (U15 Boys) Details
Rapid 5 Ellman, A (Anne-Belle) 4 2 2 Youth Day 1 2023 (Elite) Lambertsbay Youth Open 2024 (Elite) Details
Blitz 1 Ellman, A (Anne-Belle) 5 1 4 Deep Blue CC Blitz 2024 (Juniors) Deep Blue CC May Blitz 2024 Details
Blitz 2 Wehr, C (Corbin) 4 2 2 Deep Blue CC Blitz 2024 (Juniors) Deep Blue CC May Blitz 2024 Details
Blitz 3 Siebritz, N (Noelle) 4 3 1 Deep Blue CC Blitz 2024 (Juniors) Deep Blue Chess Club April Blitz 2024 Details
Blitz 4 Ellman, A (Andries) 4 2 2 Deep Blue CC Blitz 2024 (Juniors) Deep Blue CC May Blitz 2024 Details
Blitz 5 Sedeman, A (Aiden) 3 3 0 Deep Blue March Blitz 2024 Deep Blue CC May Blitz 2024 Details