PLAYER PAGE
Personal
Ndumela, B (Bulumko)
Chess SA id
2150153083FIDE id
?Date of birth
2015-02-22 (U12)Gender
FemaleRegion
Sarah Baartman (ESB)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-09-07Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1443.1 | 1462.8 | 1326.4 | 1200 |
| Raw rating | 1443.1 | 1462.8 | 1318.2 | 1200 |
| Weighted rating | 1410.1 | 1421.4 | 1326.4 | 1200 |
| Weighted performance | 1383.1 | 1383.8 | 0 | 0 |
| Floor | 973.9 | 976 | 847.7 | 700 |
| K-factor | 32 | 32 | 36 | 36 |
| Min/Max rating change allowed | 117.3 | 114 | 140.1 | 165.8 |
| Highest rating | 1473.92025-06-01 | 14762025-06-01 | 1433.22024-08-01 | 12002018-10-01 |
| Highest raw rating | 1473.92025-06-01 | 14762025-06-01 | 1347.72024-09-01 | 12002024-03-01 |
| Highest weighted rating | 1388.92025-09-30 | 1396.62025-09-30 | 1318.22025-08-01 | 12002018-10-01 |
| Highest weighted performance | 1473.92025-06-01 | 14762024-05-01 | 1433.22024-08-01 | 12002024-03-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0.5 | 0 |
| New rating | 1443.1 | 1462.8 | 1326.8 | 1200 |
| Analysis | ||||
| Rating | 1443.1 | 1462.8 | 1326.4 | 1200 |
| Raw rating | 1443.1 | 1462.8 | 1318.2 | 1200 |
| Weighted rating | 1410.1 | 1421.4 | 1326.4 | |
| Weighted performance | 1383.1 | 1383.8 | 0 | |
| K-factor | 32 | 32 | 36 | 36 |
| Floor | 973.9 | 976 | 847.7 | 700 |
| Max/Min rating change allowed | 117.3 | 114 | 140.1 | 165.8 |
| Games | 0 | 0 | 0 | 0 |
| Score | 0 | 0 | 0 | 0 |
| Expected score | 0 | 0 | 0 | 0 |
| Score-Expected | 0 | 0 | 0 | 0 |
| Temp raw +/- | 0 | 0 | 0 | 0 |
| Final raw +/- | 0 | 0 | 0 | 0 |
| New raw rating | 1443.1 | 1462.8 | 1318.2 | 1200 |
| New weighted rating | 1415.3 | 1427.4 | 1326.8 | 1200 |
| New weighted performance | 1373.4 | 1374.1 | 0 | 0 |
| Temp new rating | 1443.1 | 1462.8 | 1326.8 | 1200 |
| Temp new rating +/- | 0 | 0 | 0.5 | 0 |
| Final new rating +/- | 0 | 0 | 0.5 | 0 |
| New rating | 1443.1 | 1462.8 | 1326.8 | 1200 |
| New K-factor | 32 | 32 | 36 | 36 |
| New floor | 973.9 | 976 | 847.7 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 56 | 50 | 6 | 0 | |
| 47 | 32 | 15 | 0 | |
| 23 | 18 | 5 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 126 | 100 | 26 | 0 |
| Games since | |||||||||||||||||
| Main103 | Standard82 | Rapid21 | Blitz0 | ||||||||||||||
| Gender | Female | ||||||||||||||||
| Age group | U12 | ||||||||||||||||
| Region | Sarah Baartman (ESB) | ||||||||||||||||
| Province | Eastern Cape (EC) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 1757 | 211 | 47 | ||||||||||||||
| Female | 265 | 28 | 8 | ||||||||||||||
| U12 | 214 | 26 | 7 | ||||||||||||||
| U12 Female | 60 | 7 | 2 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 1491 | 184 | 39 | ||||||||||||||
| Female | 222 | 24 | 6 | ||||||||||||||
| U12 | 169 | 22 | 5 | ||||||||||||||
| U12 Female | 46 | 4 | 1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | 914 | 65 | 25 | ||||||||||||||
| Female | 144 | 11 | 8 | ||||||||||||||
| U12 | 146 | 6 | 2 | ||||||||||||||
| U12 Female | 38 | 3 | 2 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Female | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Female | -1 | -1 | -1 | ||||||||||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 56 | 33.5 | 59.82 | 83.5 | 1278.5 | 1361.9 |
| Standard | 50 | 31 | 62 | 102 | 1279.9 | 1381.9 |
| Rapid | 6 | 2.5 | 41.67 | -70.8 | 1266.3 | 1195.5 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 126 | 79 | 62.7 | 107.9 | 1234.7 | 1342.6 |
| Standard | 100 | 61.5 | 61.5 | 97.8 | 1247 | 1344.7 |
| Rapid | 26 | 17.5 | 67.31 | 147.1 | 1187.3 | 1334.5 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2026-01-01 | 1443.1 | 1462.8 | 1318.2 | 1200 |
| 2025-11-30 | 1443.1 | 1462.8 | 1318.2 | 1200 |
| 2025-11-01 | 1443.1 | 1462.8 | 1318.2 | 1200 |
| 2025-09-30 | 1443.1 | 1462.8 | 1318.2 | 1200 |
| 2025-09-01 | 1449.7 | 1476 | 1318.2 | 1200 |
| 2025-08-01 | 1449.7 | 1476 | 1318.2 | 1200 |
| 2025-07-01 | 1449.7 | 1476 | 1314.2 | 1200 |
| 2025-06-01 | 1473.9 | 1476 | 1347.7 | 1200 |
| 2025-05-01 | 1370.7 | 1382.5 | 1347.7 | 1200 |
| 2025-04-01 | 1325.3 | 1318.8 | 1347.7 | 1200 |
| 2025-03-01 | 1338.5 | 1328.5 | 1347.7 | 1200 |
| 2025-02-01 | 1370.9 | 1364.5 | 1347.7 | 1200 |
| 2025-01-01 | 1391.7 | 1388.4 | 1347.7 | 1200 |
| 2024-12-01 | 1391.7 | 1388.4 | 1347.7 | 1200 |
| 2024-11-01 | 1391.7 | 1388.4 | 1347.7 | 1200 |
| 2024-10-01 | 1391.7 | 1388.4 | 1347.7 | 1200 |
| 2024-09-01 | 1391.7 | 1388.4 | 1347.7 | 1200 |
| 2024-11-01 | 1377.2 | 1388.4 | 1308.5 | 1200 |
| 2024-07-01 | 1360 | 1372.9 | 1308.5 | 1200 |
| 2024-06-01 | 1359.4 | 1377.9 | 1308.5 | 1200 |
| 2024-05-01 | 1346.8 | 1368.3 | 1227.5 | 1200 |
| 2024-04-01 | 1299.1 | 1314.9 | 1212 | 1200 |
| 2024-03-01 | 1235.6 | 1240 | 1212 | 1200 |
| 2024-02-01 | 1154 | 1133.2 | 1212 | 1200 |
Comming soon.
Tournaments
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | EC Closed 2025 (U12 Girls) | 2025-09-06 | 2025-09-07 | Standard | Nelson Mandela Bay (ENM) | 6 | 6 | 4 | Yes | Analysis |
| 2 | Holiday Fever 2025 (C) | 2025-06-21 | 2025-06-21 | Rapid | Sarah Baartman (ESB) | 10 | 6 | 2.5 | Yes | Analysis |
| 3 | SBDCA Closed 2025 (U12 Girls) | 2025-05-10 | 2025-05-10 | Standard | Sarah Baartman (ESB) | 6 | 6 | 6 | Yes | Analysis |
| 4 | SBD Trials J Bay 19 April 2025 (U12) | 2025-04-19 | 2025-04-19 | Standard | Sarah Baartman (ESB) | 6 | 6 | 4 | Yes | Analysis |
| 5 | Kouga Mayor's Cup Final 2025 (U11) | 2025-04-12 | 2025-04-12 | Standard | Sarah Baartman (ESB) | 6 | 6 | 4 | Yes | Analysis |
| 6 | South African Junior Closed Chess Championships 2025 (U10 Girls) | 2025-03-31 | 2025-04-05 | Standard | Cape Winelands (WCW) | 9 | 9 | 4 | Yes | Analysis |
| 7 | Kouga Mayor's Cup 2025 (U11) | 2025-03-08 | 2025-03-08 | Standard | Sarah Baartman (ESB) | 6 | 6 | 3 | Yes | Analysis |
| 8 | SBDCU Trials 3 2025 (U12) | 2025-02-08 | 2025-02-08 | Standard | Sarah Baartman (ESB) | 6 | 6 | 3 | Yes | Analysis |
| 9 | 2025 SBDCU Trial 2 JBay (U12) | 2025-01-25 | 2025-01-25 | Standard | Sarah Baartman (ESB) | 5 | 5 | 3 | Yes | Analysis |
| 10 | Sarah Baartman District Schools Trials 2024 (U9 Girls) | 2024-08-03 | 2024-08-03 | Rapid | Sarah Baartman (ESB) | 5 | 4 | 3.5 | Yes | Analysis |
| 11 | SBDCU Closed Trials 2024 (U10 Girls) | 2024-07-27 | 2024-07-27 | Standard | Sarah Baartman (ESB) | 5 | 4 | 4 | Yes | Analysis |
| 12 | SBDCU Trial 3 2024 (U10) | 2024-06-01 | 2024-06-01 | Standard | Sarah Baartman (ESB) | 5 | 5 | 3.5 | Yes | Analysis |
| 13 | Fountains Mall 2024 (Development) | 2024-05-18 | 2024-05-18 | Standard | Sarah Baartman (ESB) | 6 | 6 | 3 | Yes | Analysis |
| 14 | Humansdorp CMC Schools Trials 2024 (U9 Girls) | 2024-05-10 | 2024-05-10 | Rapid | Sarah Baartman (ESB) | 6 | 5 | 5 | Yes | Analysis |
| 15 | Stulting Tournament 2024 (Junior) | 2024-04-06 | 2024-04-06 | Rapid | Sarah Baartman (ESB) | 6 | 6 | 3.5 | Yes | Analysis |
| 16 | Kouga Mayor's Cup Final 2024 (U9) | 2024-04-13 | 2024-04-13 | Standard | Sarah Baartman (ESB) | 5 | 5 | 3.5 | Yes | Analysis |
| 17 | Kouga Mayor's Cup 2024 (U9) | 2024-03-09 | 2024-03-09 | Standard | Sarah Baartman (ESB) | 6 | 6 | 5 | Yes | Analysis |
| 18 | SBDCU Trial 1 2024 (U10) | 2024-02-24 | 2024-02-24 | Standard | Sarah Baartman (ESB) | 6 | 6 | 5 | Yes | Analysis |
| 19 | Stulting Sportdag 2023 (Junior) | 2023-08-25 | 2023-08-25 | Rapid | Sarah Baartman (ESB) | 5 | 5 | 3 | Yes | Analysis |
| 20 | SBDCU Trial 3 2023 (U10) | 2023-06-24 | 2023-06-24 | Standard | Sarah Baartman (ESB) | 7 | 7 | 3 | Yes | Analysis |
| 21 | SBDCU Trial 2 2023 (U10) | 2023-04-01 | 2023-04-01 | Standard | Sarah Baartman (ESB) | 5 | 5 | 2.5 | Yes | Analysis |
| 22 | Kouga Mayor's Cup 2023 (U9) | 2023-04-15 | 2023-04-15 | Standard | Sarah Baartman (ESB) | 6 | 6 | 1 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 12 | TournamentSBDCU Trial 3 2024 | TournamentSarah Baartman District Schools Trials 2024 | ||||||
| date2024-06-01 | rnd2 | typeStandard | result1 | date2024-08-03 | rnd5 | typeRapid | result1 | ||
| OpponentPetrus, I (Isabella) | OpponentPetrus, I (Isabella) | ||||||||
| 2 | 8 | TournamentSBD Trials J Bay 19 April 2025 | TournamentSBDCA Closed 2025 | ||||||
| date2025-04-19 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd6 | typeStandard | result1 | ||
| OpponentOvayo, B (Bosi Sithembiso) | OpponentTitus, S (Sade Catherine) | ||||||||
| 3 | 8 | TournamentHumansdorp CMC Schools Trials 2024 | TournamentFountains Mall 2024 | ||||||
| date2024-05-10 | rnd2 | typeRapid | result1 | date2024-05-18 | rnd3 | typeStandard | result1 | ||
| OpponentSwart, D (Daniella) | OpponentKrieger, N (Nate) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | TournamentSBD Trials J Bay 19 April 2025 | TournamentSBDCA Closed 2025 | ||||||
| date2025-04-19 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd6 | typeStandard | result1 | ||
| OpponentOvayo, B (Bosi Sithembiso) | OpponentTitus, S (Sade Catherine) | ||||||||
| 2 | 8 | TournamentSBDCU Trial 3 2024 | TournamentSBDCU Closed Trials 2024 | ||||||
| date2024-06-01 | rnd2 | typeStandard | result1 | date2024-07-27 | rnd4 | typeStandard | result1 | ||
| OpponentPetrus, I (Isabella) | OpponentNdawana, E (Elimiyo) | ||||||||
| 3 | 6 | TournamentKouga Mayor's Cup 2024 | TournamentKouga Mayor's Cup Final 2024 | ||||||
| date2024-03-09 | rnd5 | typeStandard | result1 | date2024-04-13 | rnd4 | typeStandard | result1 | ||
| OpponentVermaak, R (Riaan Junior) | OpponentSwart, W (Waldemar) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 11 | TournamentStulting Tournament 2024 | TournamentSarah Baartman District Schools Trials 2024 | ||||||
| date2024-04-06 | rnd5 | typeRapid | result0.5 | date2024-08-03 | rnd5 | typeRapid | result1 | ||
| OpponentMarais, T (Taurin) | OpponentPetrus, I (Isabella) | ||||||||
| 2 | 3 | TournamentStulting Sportdag 2023 | TournamentStulting Sportdag 2023 | ||||||
| date2023-08-25 | rnd2 | typeRapid | result1 | date2023-08-25 | rnd4 | typeRapid | result1 | ||
| OpponentBredell, A (Alcapone) | OpponentLe Roux, H (Handre) | ||||||||
| 3 | 2 | TournamentHoliday Fever 2025 | TournamentHoliday Fever 2025 | ||||||
| date2025-06-21 | rnd3 | typeRapid | result0.5 | date2025-06-21 | rnd5 | typeRapid | result1 | ||
| OpponentPiko, L (Likhona) | OpponentNtlomose, A (Andile) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | TournamentSBD Trials J Bay 19 April 2025 | TournamentSBDCA Closed 2025 | ||||||
| date2025-04-19 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd6 | typeStandard | result1 | ||
| OpponentOvayo, B (Bosi Sithembiso) | OpponentTitus, S (Sade Catherine) | ||||||||
| 2 | 8 | TournamentHumansdorp CMC Schools Trials 2024 | TournamentFountains Mall 2024 | ||||||
| date2024-05-10 | rnd2 | typeRapid | result1 | date2024-05-18 | rnd3 | typeStandard | result1 | ||
| OpponentSwart, D (Daniella) | OpponentKrieger, N (Nate) | ||||||||
| 3 | 6 | TournamentSBDCU Trial 1 2024 | TournamentKouga Mayor's Cup 2024 | ||||||
| date2024-02-24 | rnd4 | typeStandard | result1 | date2024-03-09 | rnd3 | typeStandard | result1 | ||
| OpponentSeptember, C (Connor) | OpponentMgedle, L (Lulo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | TournamentSBD Trials J Bay 19 April 2025 | TournamentSBDCA Closed 2025 | ||||||
| date2025-04-19 | rnd5 | typeStandard | result1 | date2025-05-10 | rnd6 | typeStandard | result1 | ||
| OpponentOvayo, B (Bosi Sithembiso) | OpponentTitus, S (Sade Catherine) | ||||||||
| 2 | 6 | TournamentSBDCU Trial 1 2024 | TournamentKouga Mayor's Cup 2024 | ||||||
| date2024-02-24 | rnd4 | typeStandard | result1 | date2024-03-09 | rnd3 | typeStandard | result1 | ||
| OpponentSeptember, C (Connor) | OpponentMgedle, L (Lulo) | ||||||||
| 3 | 4 | TournamentSBDCU Closed Trials 2024 | TournamentSBDCU Closed Trials 2024 | ||||||
| date2024-07-27 | rnd1 | typeStandard | result1 | date2024-07-27 | rnd4 | typeStandard | result1 | ||
| OpponentRetief, M (Marize) | OpponentNdawana, E (Elimiyo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentStulting Tournament 2024 | TournamentSarah Baartman District Schools Trials 2024 | ||||||
| date2024-04-06 | rnd6 | typeRapid | result1 | date2024-08-03 | rnd2 | typeRapid | result1 | ||
| OpponentVermaak, R (Riaan Junior) | OpponentRetief, M (Marize) | ||||||||
| 2 | 3 | TournamentStulting Sportdag 2023 | TournamentStulting Sportdag 2023 | ||||||
| date2023-08-25 | rnd2 | typeRapid | result1 | date2023-08-25 | rnd4 | typeRapid | result1 | ||
| OpponentBredell, A (Alcapone) | OpponentLe Roux, H (Handre) | ||||||||
| 3 | 2 | TournamentSarah Baartman District Schools Trials 2024 | TournamentSarah Baartman District Schools Trials 2024 | ||||||
| date2024-08-03 | rnd4 | typeRapid | result1 | date2024-08-03 | rnd5 | typeRapid | result1 | ||
| OpponentHerrington, M (Mia) | OpponentPetrus, I (Isabella) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
Top 10 opponents most often played
| # | Opponent | Main | Standard | Rapid | Blitz | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
| Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
| 1 | Mfabana ,A (Alunamda) | 5 | 2.5 | 0 | 5 | 2.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1286.7 | 1286.7 | 1294.7 | 1286.7 | 0 | 0 | 0 | 0 | ||||||
| 2 | Stofile ,I (Imkhitha Zidan) | 4 | 2 | 0 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1393.1 | 1393.1 | 1430.1 | 1393.1 | 0 | 0 | 0 | 0 | ||||||
| 3 | Kettledas ,JF (Jerrin Fagan) | 4 | 2 | 0 | 3 | 1 | -141.7 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1127.1 | 1127.1 | 1129 | 985.4 | 1184.4 | 1552.1 | 0 | 0 | ||||||
| 4 | Retief ,M (Marize) | 4 | 4 | 425 | 3 | 3 | 425 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1118.7 | 1543.7 | 1120.7 | 1543.7 | 1200 | 1543.7 | 0 | 0 | ||||||
| 5 | Swart ,W (Waldemar) | 4 | 1 | -212.5 | 3 | 1 | -141.7 | 1 | 0 | -425 | 0 | 0 | 0 |
| 1388.4 | 1175.9 | 1393.7 | 1246.8 | 1199.2 | 963.4 | 0 | 0 | ||||||
| 6 | Titus ,S (Sade Catherine) | 4 | 1 | -212.5 | 2 | 1 | 0 | 2 | 0 | -425 | 0 | 0 | 0 |
| 1359.6 | 1147.1 | 1346.1 | 1359.6 | 1193.1 | 934.6 | 0 | 0 | ||||||
| 7 | Bruton ,C (Caleb) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1499.6 | 1074.6 | 1506.7 | 1074.6 | 0 | 0 | 0 | 0 | ||||||
| 8 | Mahlengele ,A (Akhanya) | 3 | 2.5 | 283.3 | 3 | 2.5 | 283.3 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1157.8 | 1441.1 | 1159.7 | 1441.1 | 0 | 0 | 0 | 0 | ||||||
| 9 | Lindiwe ,S (Somila) | 3 | 3 | 425 | 3 | 3 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1178.6 | 1603.6 | 1172.2 | 1603.6 | 0 | 0 | 0 | 0 | ||||||
| 10 | Louis ,K (Keanu) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1300 | 875 | 1300.6 | 875 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|

