PLAYER PAGE
Dumisa Jacob Nkosi
182027949Ehlanzeni (MEN)Personal
Main rating
| Rating | 1805.1 |
| K-factor | 24 |
| Floor | 1345.3 |
| Highest | 1845.3 (2018-02-01) |
| Min/Max +/- allowed | 66 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1611.1 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1805.1 |
| K-factor | 24 |
| Floor | 1345.3 |
| Highest | 1845.3 (2018-02-01) |
| Min/Max +/- allowed | 66.1 |
Standard rating
| Rating | 1827.4 |
| K-factor | 24 |
| Floor | 1355.4 |
| Highest | 1855.4 (2024-03-01) |
| Min/Max +/- allowed | 65.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1603.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1827.4 |
| K-factor | 24 |
| Floor | 1355.4 |
| Highest | 1855.4 (2024-03-01) |
| Min/Max +/- allowed | 65.2 |
Rapid rating
| Rating | 1890.6 |
| K-factor | 24 |
| Floor | 1398.7 |
| Highest | 1898.7 (2024-03-01) |
| Min/Max +/- allowed | 61.3 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1433.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1890.6 |
| K-factor | 24 |
| Floor | 1398.7 |
| Highest | 1898.7 (2024-03-01) |
| Min/Max +/- allowed | 61.3 |
Blitz rating
| Rating | 1723.7 |
| K-factor | 24 |
| Floor | 1346.4 |
| Highest | 1854.8 (2018-01-01) |
| Min/Max +/- allowed | 65.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1331.7 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1723.7 |
| K-factor | 24 |
| Floor | 1346.4 |
| Highest | 1854.8 (2018-01-01) |
| Min/Max +/- allowed | 65.2 |
Rating Graph
Tournaments
| # | 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 | 2025 Mzansi Individual Championships (Adult) | Classical | 2025-12-17 | 2025-12-20 | Nelson Mandela Bay (ENM) | 6 | 1819.9 | 6 | 4.5 | 1765 | 0 | Details |
| 2 | 2025 Mzansi Inter Provincial Team Championships (Adults) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1819.9 | 6 | 3 | 1696.2 | 0 | Details |
| 3 | Gatekeepers Round Robin 2025 | Standard | 2025-12-13 | 2025-12-13 | Nelson Mandela Bay (ENM) | 5 | 1819.9 | 5 | 3 | 1522.6 | 0 | Details |
| 4 | St Thomas Future Masters Challenge 2025 (High School+Adults) | Rapid | 2025-11-29 | 2025-11-29 | Nelson Mandela Bay (ENM) | 6 | 1820.6 | 6 | 4 | 1660.2 | 0 | Details |
| 5 | South African Open 2025 (Championship) | Classical | 2025-06-28 | 2025-07-05 | Johannesburg Metro (GJM) | 11 | 1819.9 | 10 | 0.5 | 1449.1 | 0 | Details |
| 6 | Moja Chess Extravaganza 2025 (B) | Classical | 2025-04-26 | 2025-05-01 | Johannesburg Metro (GJM) | 9 | 1827.2 | 9 | 5.5 | 1748.1 | 0 | Details |
| 7 | Moja Chess Extravaganza 2025 (Blitz) | Blitz | 2025-04-26 | 2025-04-26 | Johannesburg Metro (GJM) | 7 | 1827.2 | 6 | 4 | 1801.1 | 0 | Details |
| 8 | Pearson High Chess Festival 2025 (A) | Standard | 2025-02-21 | 2025-02-22 | Nelson Mandela Bay (ENM) | 5 | 1827.2 | 0 | 0 | 0 | 0 | Details |
| 9 | 7th Annual UFH Heritage Open 2024 (A) | Standard | 2024-09-21 | 2024-09-22 | Amathole (EAL) | 7 | 1825 | 7 | 4 | 1823.7 | 0 | Details |
| 10 | 2024 UCC Mind Over Board (A) | Classical | 2024-08-30 | 2024-09-01 | Nelson Mandela Bay (ENM) | 5 | 1825 | 5 | 3.5 | 1821.8 | 0 | Details |
| 11 | Spartan Bishops Chess Championships 2024 (Kings) | Standard | 2024-05-04 | 2024-05-05 | Bojanala Platina (NBR) | 5 | 1807.9 | 4 | 2 | 1852.9 | 0 | Details |
| 12 | Fountains Mall 2024 (Open) | Standard | 2024-05-17 | 2024-05-18 | Sarah Baartman (ESB) | 6 | 1807.9 | 6 | 4.5 | 1905.5 | 0 | Details |
| 13 | UFH Heritage Open 2024 (A) | Standard | 2024-03-30 | 2024-03-31 | Amathole (EAL) | 6 | 1823.7 | 6 | 4.5 | 1790.2 | 0 | Details |
| 14 | UCC Strategic Moves 2024 (A) | Standard | 2024-03-08 | 2024-03-09 | Nelson Mandela Bay (ENM) | 5 | 1823.7 | 5 | 3.5 | 1734.5 | 0 | Details |
| 15 | Madibaz Chess Tournament 2024 (A) | Standard | 2024-03-01 | 2024-03-02 | Nelson Mandela Bay (ENM) | 5 | 1823.7 | 5 | 3.5 | 1733.8 | 0 | Details |
| 16 | YCA Otto Du Plessis Rapid 2024 (A) | Rapid | 2024-02-03 | 2024-02-03 | Nelson Mandela Bay (ENM) | 5 | 1778.8 | 5 | 5 | 1965.4 | 0 | Details |
| 17 | Pearson Open Chess Tournament 2024 (A) | Standard | 2024-02-23 | 2024-02-24 | Nelson Mandela Bay (ENM) | 5 | 1778.8 | 5 | 5 | 2055.9 | 0 | Details |
| 18 | Eastern Cape Provincial Individual Championship 2023 (Open) | Standard | 2023-10-05 | 2023-10-06 | Nelson Mandela Bay (ENM) | 7 | 1810.3 | 6 | 5 | 1790.3 | 0 | Details |
| 19 | Eastern Cape Chess Team Championship 2023 (Open) | Standard | 2023-10-07 | 2023-10-08 | Sarah Baartman (ESB) | 5 | 1810.3 | 4 | 1.5 | 1408.1 | 0 | Details |
| 20 | UFH Heritage Open 2023 (A Playoffs) | Blitz | 2023-09-24 | 2023-09-24 | Amathole (EAL) | 6 | 1816.6 | 6 | 4 | 1854 | 0 | Details |
| 21 | UFH Heritage Open 2023 (A) | Standard | 2023-09-23 | 2023-09-24 | Amathole (EAL) | 6 | 1816.6 | 6 | 4.5 | 1746.8 | 0 | Details |
| 22 | Uitenhage Chess Club Grand Prix 2023 (A) | Standard | 2023-08-25 | 2023-08-26 | Nelson Mandela Bay (ENM) | 5 | 1811 | 5 | 4.5 | 1841.1 | 0 | Details |
| 23 | NMBCU Closed 2023 (Adults) | Standard | 2023-08-11 | 2023-08-12 | Nelson Mandela Bay (ENM) | 6 | 1811 | 6 | 5.5 | 1685.9 | 0 | Details |
| 24 | NMBCU Trial 4 2023 (U20+Open) | Standard | 2023-07-28 | 2023-07-29 | Nelson Mandela Bay (ENM) | 5 | 1806.4 | 5 | 4.5 | 1710.4 | 0 | Details |
| 25 | Fountains Mall Open 2023 (A) | Standard | 2023-05-12 | 2023-05-13 | Sarah Baartman (ESB) | 6 | 1794.8 | 6 | 4.5 | 1801.5 | 0 | Details |
| 26 | EP Trials 3 2023 (Open) | Standard | 2023-05-05 | 2023-05-06 | Nelson Mandela Bay (ENM) | 6 | 1794.8 | 6 | 6 | 1742.5 | 0 | Details |
| 27 | Youth Chess Acadamy Rapid Tournament 2023 (A) | Rapid | 2023-03-11 | 2023-03-11 | Nelson Mandela Bay (ENM) | 5 | 1794.5 | 5 | 4 | 1739.1 | 0 | Details |
| 28 | NMB 1st Trials 2023 (Adults) | Standard | 2023-02-17 | 2023-02-18 | Nelson Mandela Bay (ENM) | 6 | 1778 | 6 | 6 | 1843.3 | 0 | Details |
| 29 | The Team Battle 2022 (A) | Rapid | 2022-11-19 | 2022-11-19 | Sarah Baartman (ESB) | 7 | 1767.2 | 6 | 6 | 1868.3 | 0 | Details |
| 30 | EC Players Individual Championship 2022 (A) | Standard | 2022-10-08 | 2022-10-09 | Sarah Baartman (ESB) | 5 | 1755.6 | 5 | 4 | 1805.6 | 0 | Details |
| 31 | 2022 Madibaz Tournament (Open) | Classical | 2022-09-09 | 2022-09-11 | Nelson Mandela Bay (ENM) | 5 | 1787.2 | 5 | 2.5 | 1631.7 | 0 | Details |
| 32 | 2022 Madibaz Tournament (Open Blitz) | Blitz | 2022-09-09 | 2022-09-09 | Nelson Mandela Bay (ENM) | 7 | 1787.2 | 6 | 3 | 1450.7 | 0 | Details |
| 33 | 2022 Westering Tournament (Rapid) | Rapid | 2022-08-27 | 2022-08-27 | Nelson Mandela Bay (ENM) | 5 | 1773.2 | 5 | 4 | 1599.4 | 0 | Details |
| 34 | 2022 Westering Tournament (Blitz) | Blitz | 2022-08-27 | 2022-08-27 | Nelson Mandela Bay (ENM) | 7 | 1773.2 | 7 | 6.5 | 1774.7 | 0 | Details |
| 35 | 2022 NMBCU Closed 2022 (U20+Adults) | Standard | 2022-08-19 | 2022-08-20 | Nelson Mandela Bay (ENM) | 5 | 1773.2 | 5 | 4 | 1653.8 | 0 | Details |
| 36 | 2022 NMBCU Trial 4 (U20+Adult) | Standard | 2022-08-12 | 2022-08-13 | Nelson Mandela Bay (ENM) | 6 | 1773.2 | 6 | 6 | 1876.9 | 0 | Details |
| 37 | NMBCU Trial 3 2022 (Adults) | Standard | 2022-07-22 | 2022-07-23 | Nelson Mandela Bay (ENM) | 6 | 1765.4 | 6 | 5 | 1763.8 | 0 | Details |
| 38 | Fountains Mall Open Tournament 2022 (A) | Standard | 2022-05-13 | 2022-05-14 | Sarah Baartman (ESB) | 5 | 1765.4 | 0 | 0 | 0 | 0 | Details |
| 39 | Makhanda Open Chess Tournament 2022 (A) | Rapid | 2022-04-30 | 2022-04-30 | Sarah Baartman (ESB) | 6 | 1755.3 | 5 | 5 | 1784.6 | 0 | Details |
| 40 | SBDCU 2nd Open Tournament Fountains Mall 2022 (A) | Standard | 2022-03-04 | 2022-03-05 | Sarah Baartman (ESB) | 5 | 1764.8 | 5 | 4 | 1671.1 | 0 | Details |
| 41 | 2022 Nelson Mandela Bay Open (A) | Classical | 2022-01-28 | 2022-02-06 | Nelson Mandela Bay (ENM) | 9 | 1721.8 | 9 | 6 | 1895.9 | 0 | Details |
| 42 | 2021 Legends Rapid (A) | Rapid | 2021-12-04 | 2021-12-04 | Amathole (EAL) | 6 | 1699.5 | 6 | 5 | 1905.3 | 0 | Details |
| 43 | Alekhine Chess Club Rapid 2021 | Rapid | 2021-10-02 | 2021-10-02 | Nelson Mandela Bay (ENM) | 7 | 1696.7 | 7 | 6.5 | 1751.4 | 0 | Details |
| 44 | UFH Heritage Open 2021 (A) | Standard | 2021-10-16 | 2021-10-17 | Amathole (EAL) | 5 | 1696.7 | 5 | 3 | 1625.1 | 0 | Details |
| 45 | UFH Heritage Open 2021 (Blitz) | Blitz | 2021-10-17 | 2021-10-17 | Amathole (EAL) | 7 | 1696.7 | 7 | 5 | 1807.6 | 0 | Details |
| 46 | Bergvlam Tournament 2020 (Senior) | Classical | 2020-03-13 | 2020-03-14 | Ehlanzeni (MEN) | 5 | 1700.8 | 5 | 3 | 1657.9 | 0 | Details |
| 47 | Chess Unlimited Leap Year Tournament 2020 (Open) | Standard | 2020-02-29 | 2020-02-29 | Ehlanzeni (MEN) | 5 | 1692.9 | 5 | 4 | 1703.6 | 0 | Details |
| 48 | Uplands 2020 (Open) | Standard | 2020-01-25 | 2020-01-25 | Ehlanzeni (MEN) | 5 | 1680.8 | 5 | 4 | 1810.6 | 0 | Details |
| 49 | 2019 Inter Region Chess Championships | Classical | 2020-01-09 | 2020-01-12 | 4 Knights (4K) | 7 | 1680.8 | 7 | 1.5 | 1683.2 | 0 | Details |
| 50 | 2019 South African Closed Chess Championships (Open B) | Classical | 2019-12-07 | 2019-12-17 | Cape Town (WCT) | 11 | 1691.1 | 10 | 3.5 | 1656 | 0 | 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 | 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 (History)
| Games | 411 |
| Wins | 259 |
| Draws | 52 |
| Losses | 100 |
| White | 207 |
| Black | 204 |
| White wins | 135 |
| Black wins | 124 |
| Score | 285 |
| Percent | 69.3 |
| Dp | 164.4 |
| AOR | 1562.9 |
| Performance | 1727.3 |
Rankings (Main)
| National | |
| Overall | 234 |
| Gender | 223 |
| Age group | 154 |
| Gender/Age | 148 |
| Provincial | |
| Overall | 2 |
| Gender | 2 |
| Age group | 2 |
| Gender/Age | 2 |
| Regional | |
| Overall | 1 |
| Gender | 1 |
| Age group | 1 |
| Gender/Age | 1 |
Rankings (Standard)
| National | |
| Overall | 197 |
| Gender | 188 |
| Age group | 130 |
| Gender/Age | 125 |
| Provincial | |
| Overall | 2 |
| Gender | 2 |
| Age group | 2 |
| Gender/Age | 2 |
| Regional | |
| Overall | 1 |
| Gender | 1 |
| Age group | 1 |
| Gender/Age | 1 |
Rankings (Rapid)
| 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 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 48 |
| Score | 24.5 |
| Percent | 51 |
| Aor | 1644.7 |
| Dp | 8.9 |
| Prat | 1653.6 |
Performance (History)
| Games | 411 |
| Score | 285 |
| Percent | 69.3 |
| Aor | 1562.9 |
| Dp | 164.4 |
| Prat | 1727.3 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Mhango, BF (Banele) | 17 | 9 | 8 | Rob Ferreira Hoerskool Open 2018 (Open) | Bergvlam Tournament 2020 (Senior) | Details |
| Overall | 2 | Peter, NM (Neathan Mninawa) | 11 | 6 | 5 | 2022 Madibaz Tournament (Open Blitz) | 2025 Mzansi Inter Provincial Team Championships (Adults) | Details |
| Overall | 3 | Muller, K (Kaden) | 10 | 5 | 5 | SBDCU 2nd Open Tournament Fountains Mall 2022 (A) | NMBCU Closed 2023 (Adults) | Details |
| Overall | 4 | Maluleke, PE (Pfumelani Emmanuel) | 9 | 4 | 5 | Rob Ferreira Hoerskool Open 2018 (Open) | Bergvlam Tournament 2020 (Senior) | Details |
| Overall | 5 | Mafanya, K (Kulasande) | 8 | 4 | 4 | UFH Heritage Open 2021 (Blitz) | Eastern Cape Provincial Individual Championship 2023 (Open) | Details |
| Standard | 1 | Mhango, BF (Banele) | 17 | 9 | 8 | Rob Ferreira Hoerskool Open 2018 (Open) | Bergvlam Tournament 2020 (Senior) | Details |
| Standard | 2 | Maluleke, PE (Pfumelani Emmanuel) | 9 | 4 | 5 | Rob Ferreira Hoerskool Open 2018 (Open) | Bergvlam Tournament 2020 (Senior) | Details |
| Standard | 3 | Peter, NM (Neathan Mninawa) | 8 | 5 | 3 | 2022 Madibaz Tournament (Open) | 2025 Mzansi Inter Provincial Team Championships (Adults) | Details |
| Standard | 4 | Gama, DD (Dalton) | 8 | 4 | 4 | Pienaar Chess Open 2018 (Open) | Uplands 2020 (Open) | Details |
| Standard | 5 | Maluka, MS (Mthobisi Sydwell) | 7 | 4 | 3 | Rob Ferreira Hoerskool Open 2018 (Open) | Bergvlam Tournament 2020 (Senior) | Details |
| Rapid | 1 | Muller, K (Kaden) | 3 | 2 | 1 | Makhanda Open Chess Tournament 2022 (A) | Youth Chess Acadamy Rapid Tournament 2023 (A) | Details |
| Rapid | 2 | Mafanya, K (Kulasande) | 2 | 0 | 2 | 2021 Legends Rapid (A) | Makhanda Open Chess Tournament 2022 (A) | Details |
| Rapid | 3 | Wolmarans, GM (Gregory) | 2 | 2 | 0 | Alekhine Chess Club Rapid 2021 | Youth Chess Acadamy Rapid Tournament 2023 (A) | Details |
| Rapid | 4 | Jacobs, KT (Kevin Terence) | 2 | 0 | 2 | Youth Chess Acadamy Rapid Tournament 2023 (A) | YCA Otto Du Plessis Rapid 2024 (A) | Details |
| Rapid | 5 | Odendaal, F (Frederick) | 2 | 1 | 1 | 2021 Legends Rapid (A) | St Thomas Future Masters Challenge 2025 (High School+Adults) | Details |
| Blitz | 1 | Tokoyi, R (Romeo) | 3 | 1 | 2 | UFH Heritage Open 2021 (Blitz) | UFH Heritage Open 2023 (A Playoffs) | Details |
| Blitz | 2 | Peter, NM (Neathan Mninawa) | 3 | 1 | 2 | 2022 Madibaz Tournament (Open Blitz) | UFH Heritage Open 2023 (A Playoffs) | Details |
| Blitz | 3 | Mkoko, S (Siphamandla) | 3 | 2 | 1 | UFH Heritage Open 2021 (Blitz) | UFH Heritage Open 2023 (A Playoffs) | Details |
| Blitz | 4 | Muller, K (Kaden) | 2 | 1 | 1 | 2022 Westering Tournament (Blitz) | 2022 Madibaz Tournament (Open Blitz) | Details |