PLAYER PAGE
Noelle Siebritz
2110159903West Coast (WCU)Personal
Main rating
| Rating | 1371.4 |
| K-factor | 36 |
| Floor | 877.7 |
| Highest | 1377.7 (2026-03-01) |
| Min/Max +/- allowed | 129 |
| Rating Change () | |
| Games | 10 |
| Score | 6 |
| We | 6.34 |
| SWe | -0.04 |
| Temp +/- | -1.3 |
| Penalties | 0 |
| Weight perform | 1302.8 |
| Final +/- | -1.3 |
| New Rating () | |
| Rating | 1370 |
| K-factor | 36 |
| Floor | 877.7 |
| Highest | 1377.7 (2026-03-01) |
| Min/Max +/- allowed | 128.7 |
Standard rating
| Rating | 1356 |
| K-factor | 36 |
| Floor | 856 |
| Highest | 1356 (2026-09-01) |
| Min/Max +/- allowed | 132.8 |
| Rating Change () | |
| Games | 5 |
| Score | 3.5 |
| We | 3.12 |
| SWe | 0.38 |
| Temp +/- | 13.7 |
| Penalties | 0 |
| Weight perform | 1371 |
| Final +/- | +15 |
| New Rating () | |
| Rating | 1371 |
| K-factor | 36 |
| Floor | 871 |
| Highest | 1371 (2026-10-01) |
| Min/Max +/- allowed | 130 |
Rapid rating
| Rating | 1379.1 |
| K-factor | 32 |
| Floor | 919.3 |
| Highest | 1419.3 (2025-08-01) |
| Min/Max +/- allowed | 121.3 |
| Rating Change () | |
| Games | 5 |
| Score | 2.5 |
| We | 3.24 |
| SWe | -0.74 |
| Temp +/- | -23.8 |
| Penalties | 0 |
| Weight perform | 1291.7 |
| Final +/- | -23.8 |
| New Rating () | |
| Rating | 1355.3 |
| K-factor | 32 |
| Floor | 919.3 |
| Highest | 1419.3 (2025-08-01) |
| Min/Max +/- allowed | 121.3 |
Blitz rating
| Rating | 1116.6 |
| 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 | 845.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1116.6 |
| 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 | West Coast Open 2026 (U16) | Standard | 2026-10-10 | 2026-10-10 | West Coast (WCU) | 5 | 1371.4 | 5 | 3.5 | 1427.9 | 15.6 | Details |
| 2 | West Coast Open 2026 (Rapid U14+U16) | Rapid | 2026-10-11 | 2026-10-11 | West Coast (WCU) | 6 | 1371.4 | 5 | 2.5 | 1229.5 | -17 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Rooibos Open 2026 (Intermediate) | Rapid | 2026-08-29 | 2026-08-29 | West Coast (WCU) | 5 | 1367.5 | 5 | 3.5 | 1401.4 | 3.9 | Details |
| 2 | Western Cape Women's Championship 2026 (Intermediate) | Standard | 2026-08-09 | 2026-08-10 | West Coast (WCU) | 5 | 1367.5 | 5 | 3 | 1414.3 | 8.5 | Details |
| 3 | South African Open Championship 2026 (U15 Girls) | Classical | 2026-07-02 | 2026-07-05 | Cape Town (WCT) | 7 | 1348.8 | 7 | 3.5 | 1388.4 | 10.1 | Details |
| 4 | Lower West Coast Top Schools 2026 (U15) | Rapid | 2026-05-30 | 2026-05-30 | West Coast (WCU) | 5 | 1359.9 | 4 | 2 | 1250.2 | -11.1 | Details |
| 5 | 2026 WCSC HS Individual Championship (U15 Girls) | Standard | 2026-05-02 | 2026-05-03 | Eden (WEG) | 6 | 1377.7 | 6 | 3 | 1452.2 | 15.6 | Details |
| 6 | Moja Chess Extravaganza 2026 (U16) | Standard | 2026-04-25 | 2026-04-26 | Cape Town (WCT) | 5 | 1377.7 | 5 | 1.5 | 1182.6 | -33.4 | Details |
| 7 | West Coast Schools Prestige Individuals Championships 2026 (U15 Girls) | Standard | 2026-02-28 | 2026-03-07 | West Coast (WCU) | 6 | 1363.8 | 6 | 4 | 1429.1 | 13.9 | Details |
| 8 | Lower West Coast Schools Prestige Individuals Championship 2026 (U15 Girls) | Rapid | 2026-02-14 | 2026-02-14 | West Coast (WCU) | 5 | 1332.4 | 5 | 4 | 1549.1 | 15.8 | Details |
| 9 | West Coast League 2026 (B) | Rapid | 2026-02-07 | 2026-02-07 | West Coast (WCU) | 5 | 1332.4 | 4 | 2 | 1359.9 | 1 | Details |
| 10 | West Coast Schools Chess Grand Challenge League 2025 (HS Super) | Rapid | 2025-11-08 | 2025-11-08 | West Coast (WCU) | 5 | 1357.5 | 4 | 1 | 1110 | -13.9 | Details |
| 11 | Basil Ellman Annual Rapid 2025 (Seniors) | Rapid | 2025-09-20 | 2025-09-20 | West Coast (WCU) | 5 | 1371.8 | 5 | 2 | 1271.7 | -7.9 | Details |
| 12 | Western Cape Women’s Championship 2025 (Sunday Rapid) | Rapid | 2025-08-10 | 2025-08-10 | West Coast (WCU) | 5 | 1366.7 | 5 | 3 | 1424.6 | 2.8 | Details |
| 13 | Lower West Coast Top Schools 2025 (U17) | Rapid | 2025-06-14 | 2025-06-14 | West Coast (WCU) | 6 | 1360.9 | 6 | 4.5 | 1432.2 | 4.8 | Details |
| 14 | Deep Blue Open 2025 (A) | Standard | 2025-06-21 | 2025-06-21 | West Coast (WCU) | 5 | 1360.9 | 5 | 1.5 | 1354.5 | -1.7 | Details |
| 15 | West Coast And Mykonos Open 2025 (Open) | Standard | 2025-05-02 | 2025-05-04 | West Coast (WCU) | 6 | 1360.6 | 6 | 3 | 1362.2 | 0.2 | Details |
| 16 | Western Cape Schools Individual Championship 2025 (U15 Girls) | Standard | 2025-04-26 | 2025-04-27 | West Coast (WCU) | 6 | 1366.3 | 6 | 3 | 1329.4 | -4.3 | Details |
| 17 | West Coast Schools Chess Prestige 2025 (U15 Girls) | Standard | 2025-03-08 | 2025-03-08 | West Coast (WCU) | 6 | 1336.4 | 6 | 4 | 1402.6 | 7.8 | Details |
| 18 | Lower West Coast Prestige 2025 (U15 Girls) | Rapid | 2025-02-22 | 2025-02-22 | West Coast (WCU) | 5 | 1267.7 | 4 | 4 | 1735.7 | 26.6 | Details |
| 19 | Lambertsbay Chess Club Crayfish Classic 2024 | Standard | 2024-12-16 | 2024-12-16 | West Coast (WCU) | 5 | 1294 | 5 | 2 | 1154.2 | -14.4 | Details |
| 20 | West Coast Grand Challange League 2024 (PS Champions) | Rapid | 2024-10-26 | 2024-10-26 | West Coast (WCU) | 5 | 1276.9 | 5 | 4 | 1417.2 | 9.6 | Details |
| 21 | The Rooibos Open 2024 (Elite) | Rapid | 2024-08-24 | 2024-08-24 | West Coast (WCU) | 5 | 1274 | 5 | 2 | 1302.5 | 1.6 | Details |
| 22 | Western Cape Women’s Championship 2024 (Intermediate) | Standard | 2024-08-10 | 2024-08-10 | West Coast (WCU) | 5 | 1246.8 | 5 | 2 | 1229.4 | -2.5 | Details |
| 23 | Western Cape Women’s Championship 2024 (U14) | Standard | 2024-08-09 | 2024-08-09 | West Coast (WCU) | 5 | 1246.8 | 5 | 3 | 1419.2 | 17.6 | Details |
| 24 | South African Open Chess Championship 2024 (C) | Standard | 2024-07-04 | 2024-07-07 | Ethekwini (KED) | 7 | 1229.2 | 7 | 3 | 1289.5 | 9.8 | Details |
| 25 | Lambertsbay Youth Open 2024 (Open) | Rapid | 2024-06-17 | 2024-06-17 | West Coast (WCU) | 5 | 1186 | 4 | 2.5 | 1264.3 | 4.7 | Details |
| 26 | Basil Ellman Annual Rapid 2024 (Advanced) | Rapid | 2024-06-08 | 2024-06-08 | West Coast (WCU) | 5 | 1186 | 5 | 4 | 1477.3 | 19.3 | Details |
| 27 | Deep Blue CC May Blitz 2024 | Blitz | 2024-05-22 | 2024-05-22 | West Coast (WCU) | 7 | 1125.9 | 7 | 2 | 1088.6 | -1.3 | Details |
| 28 | West Coast & Mykonos Open 2024 (U14) | Standard | 2024-05-18 | 2024-05-18 | West Coast (WCU) | 5 | 1125.9 | 5 | 3.5 | 1467.4 | 32.5 | Details |
| 29 | Lower West Top Schools 2024 (U18) | Rapid | 2024-05-11 | 2024-05-11 | West Coast (WCU) | 5 | 1125.9 | 4 | 0.5 | 1011.2 | -7.6 | Details |
| 30 | Western Cape PS Individuals Championship 2024 (U13 Girls) | Standard | 2024-05-04 | 2024-05-05 | West Coast (WCU) | 6 | 1125.9 | 5 | 2 | 1212.2 | 8.8 | Details |
| 31 | Lambersbaai Open 2024 (A) | Rapid | 2024-05-01 | 2024-05-01 | West Coast (WCU) | 5 | 1125.9 | 5 | 2 | 1146.2 | 0.9 | Details |
| 32 | Deep Blue Chess Club April Blitz 2024 | Blitz | 2024-04-24 | 2024-04-24 | West Coast (WCU) | 7 | 1107.8 | 5 | 1 | 1055.9 | -1.3 | Details |
| 33 | Deep Blue Open 2024 (Development) | Rapid | 2024-04-13 | 2024-04-13 | West Coast (WCU) | 5 | 1107.8 | 5 | 2.5 | 1219.8 | 9.1 | Details |
| 34 | Deep Blue March Blitz 2024 | Blitz | 2024-03-27 | 2024-03-27 | West Coast (WCU) | 5 | 1107.8 | 5 | 2 | 1222.4 | 2.3 | Details |
| 35 | West Coast Schools Chess Prestige Championships 2024 (U13 Girls) | Rapid | 2024-03-09 | 2024-03-09 | West Coast (WCU) | 5 | 1092.2 | 4 | 2 | 1247.8 | 8.7 | Details |
| 36 | Lower West Coast Schools Chess Prestige 2024 (U13 Girls) | Rapid | 2024-02-17 | 2024-02-17 | West Coast (WCU) | 5 | 1037.9 | 5 | 3.5 | 1400.7 | 25.1 | Details |
| 37 | Deep Blue February Blitz Juniors 2024 | Blitz | 2024-02-28 | 2024-02-28 | West Coast (WCU) | 7 | 1037.9 | 6 | 3 | 1233.5 | 5.2 | Details |
| 38 | Longacres Top 10 Battle January 2024 | Rapid | 2024-01-27 | 2024-01-27 | West Coast (WCU) | 5 | 1044.9 | 4 | 0 | 775 | -8.5 | Details |
| 39 | Deep Blue CC Blitz 2024 (Juniors) | Blitz | 2024-01-27 | 2024-01-27 | West Coast (WCU) | 7 | 1044.9 | 7 | 3 | 1196.4 | 4.6 | Details |
| 40 | Deep Blue Open Team 2023 | Rapid | 2023-11-04 | 2023-11-04 | West Coast (WCU) | 5 | 1039.7 | 5 | 2 | 1089.3 | 2.9 | Details |
| 41 | Western Cape Closed Championship 2023 (U14) | Rapid | 2023-09-23 | 2023-09-23 | Cape Town (WCT) | 6 | 1128.9 | 6 | 0 | 806.3 | -25.7 | Details |
| 42 | Deep Blue Open 2023 (Advanced) | Rapid | 2023-09-16 | 2023-09-16 | West Coast (WCU) | 5 | 1128.9 | 5 | 0 | 801.1 | -23 | Details |
| 43 | Basil Ellman Rapid 2023 (B) | Rapid | 2023-09-30 | 2023-09-30 | West Coast (WCU) | 5 | 1128.9 | 5 | 2 | 1123.5 | -1 | Details |
| 44 | CW Top Schools 2023 (U14) | Standard | 2023-08-12 | 2023-08-12 | West Coast (WCU) | 5 | 1172.8 | 4 | 0.5 | 863.5 | -24.2 | Details |
| 45 | Saldanha Open 2023 (B) | Rapid | 2023-07-29 | 2023-07-29 | West Coast (WCU) | 5 | 1200 | 5 | 1.5 | 993 | -15.2 | Details |
Game statistics ( )
| Games | 10 |
| Wins | 5 |
| Draws | 2 |
| Losses | 3 |
| White | 6 |
| Black | 4 |
| White wins | 2 |
| Black wins | 3 |
| Score | 6 |
| Percent | 60 |
| Dp | 85 |
| AOR | 1243.7 |
| Performance | 1328.7 |
Game statistics ()
| Games | 57 |
| Wins | 30 |
| Draws | 5 |
| Losses | 22 |
| White | 30 |
| Black | 27 |
| White wins | 19 |
| Black wins | 11 |
| Score | 32.5 |
| Percent | 57 |
| Dp | 59.6 |
| AOR | 1317 |
| Performance | 1376.7 |
Game statistics (History)
| Games | 242 |
| Wins | 105 |
| Draws | 18 |
| Losses | 119 |
| White | 128 |
| Black | 114 |
| White wins | 60 |
| Black wins | 45 |
| Score | 114 |
| Percent | 47.1 |
| Dp | -24.6 |
| AOR | 1284.2 |
| Performance | 1259.6 |
Rankings (Main)
| National | |
| Overall | 4171 |
| Gender | 687 |
| Age group | 600 |
| Gender/Age | 123 |
| Provincial | |
| Overall | 1281 |
| Gender | 267 |
| Age group | 174 |
| Gender/Age | 45 |
| Regional | |
| Overall | 102 |
| Gender | 25 |
| Age group | 20 |
| Gender/Age | 4 |
Rankings (Standard)
| National | |
| Overall | 4022 |
| Gender | 704 |
| Age group | 615 |
| Gender/Age | 129 |
| Provincial | |
| Overall | 1205 |
| Gender | 269 |
| Age group | 175 |
| Gender/Age | 47 |
| Regional | |
| Overall | 77 |
| Gender | 19 |
| Age group | 14 |
| Gender/Age | 3 |
Rankings (Rapid)
| National | |
| Overall | 1155 |
| Gender | 171 |
| Age group | 189 |
| Gender/Age | 41 |
| Provincial | |
| Overall | 535 |
| Gender | 90 |
| Age group | 84 |
| Gender/Age | 18 |
| Regional | |
| Overall | 95 |
| Gender | 27 |
| Age group | 18 |
| Gender/Age | 5 |
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 | 10 |
| Score | 6 |
| Percent | 60 |
| Aor | 1243.7 |
| Dp | 85 |
| Prat | 1328.7 |
Performance ()
| Games | 57 |
| Score | 32.5 |
| Percent | 57 |
| Aor | 1317 |
| Dp | 59.6 |
| Prat | 1376.7 |
Performance (12 months)
| Games | 61 |
| Score | 33.5 |
| Percent | 54.9 |
| Aor | 1317.4 |
| Dp | 41.8 |
| Prat | 1359.2 |
Performance (History)
| Games | 242 |
| Score | 114 |
| Percent | 47.1 |
| Aor | 1284.2 |
| Dp | -24.6 |
| Prat | 1259.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Stoffberg, M (Mikaeel) | 8 | 5 | 3 | Deep Blue Open 2023 (Advanced) | Lower West Coast Top Schools 2026 (U15) | Details |
| Overall | 2 | Siebritz, Y (Yul) | 7 | 2 | 5 | Deep Blue CC Blitz 2024 (Juniors) | Deep Blue Open 2025 (A) | Details |
| Overall | 3 | Ellman, A (Andries) | 6 | 3 | 3 | Deep Blue Open 2023 (Advanced) | Deep Blue CC May Blitz 2024 | Details |
| Overall | 4 | Philander, M (Megan) | 5 | 2 | 3 | West Coast Schools Chess Prestige Championships 2024 (U13 Girls) | Rooibos Open 2026 (Intermediate) | Details |
| Overall | 5 | Van Rooi, K (Kaylene) | 4 | 1 | 3 | Lower West Coast Prestige 2025 (U15 Girls) | West Coast Schools Prestige Individuals Championships 2026 (U15 Girls) | Details |
| Standard | 1 | Hendricks, T (Tamia) | 3 | 2 | 1 | West Coast Schools Chess Prestige 2025 (U15 Girls) | South African Open Championship 2026 (U15 Girls) | Details |
| Standard | 2 | Siebritz, Y (Yul) | 3 | 1 | 2 | South African Open Chess Championship 2024 (C) | Deep Blue Open 2025 (A) | Details |
| Standard | 3 | Stoffberg, M (Mikaeel) | 2 | 1 | 1 | West Coast & Mykonos Open 2024 (U14) | West Coast And Mykonos Open 2025 (Open) | Details |
| Standard | 4 | Van Der Westhuizen, M (Mika) | 2 | 2 | 0 | 2026 WCSC HS Individual Championship (U15 Girls) | South African Open Championship 2026 (U15 Girls) | Details |
| Standard | 5 | Khuphwathea, L (Lucy) | 2 | 0 | 2 | Moja Chess Extravaganza 2026 (U16) | South African Open Championship 2026 (U15 Girls) | Details |
| Rapid | 1 | Philander, M (Megan) | 4 | 2 | 2 | West Coast Schools Chess Prestige Championships 2024 (U13 Girls) | Rooibos Open 2026 (Intermediate) | Details |
| Rapid | 2 | Love, C (Celine) | 3 | 1 | 2 | Lower West Top Schools 2024 (U18) | Basil Ellman Annual Rapid 2025 (Seniors) | Details |
| Rapid | 3 | Stoffberg, M (Mikaeel) | 3 | 1 | 2 | Deep Blue Open 2023 (Advanced) | Lower West Coast Top Schools 2026 (U15) | Details |
| Rapid | 4 | Ellman, A (Andries) | 3 | 1 | 2 | Deep Blue Open 2023 (Advanced) | Lambersbaai Open 2024 (A) | Details |
| Rapid | 5 | Baardman, J (Jason) | 3 | 2 | 1 | Lower West Coast Top Schools 2025 (U17) | West Coast League 2026 (B) | Details |
| Blitz | 1 | Siebritz, Y (Yul) | 4 | 1 | 3 | Deep Blue CC Blitz 2024 (Juniors) | Deep Blue Chess Club April Blitz 2024 | Details |
| Blitz | 2 | Stoffberg, M (Mikaeel) | 3 | 3 | 0 | Deep Blue February Blitz Juniors 2024 | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 3 | Ellman, A (Andries) | 3 | 2 | 1 | Deep Blue CC Blitz 2024 (Juniors) | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 4 | Sedeman, A (Aiden) | 3 | 2 | 1 | Deep Blue March Blitz 2024 | Deep Blue CC May Blitz 2024 | Details |
| Blitz | 5 | Ellman, A (Anne-Belle) | 2 | 1 | 1 | Deep Blue CC Blitz 2024 (Juniors) | Deep Blue February Blitz Juniors 2024 | Details |