PLAYER PAGE
Joseph Amachukwu
1090158533Nelson Mandela Bay (ENM)Personal
Main rating
| Rating | 1590.5 |
| K-factor | 32 |
| Floor | 1062.8 |
| Highest | 1590.5 (2026-02-28) |
| Min/Max +/- allowed | 95 |
| Rating Change () | |
| Games | 14 |
| Score | 7.5 |
| We | 7.27 |
| SWe | 0.25 |
| Temp +/- | 8 |
| Penalties | 0 |
| Weight perform | 1587.7 |
| Final +/- | +8 |
| New Rating () | |
| Rating | 1598.5 |
| K-factor | 32 |
| Floor | 1098.5 |
| Highest | 1598.5 (2026-04-01) |
| Min/Max +/- allowed | 94 |
Standard rating
| Rating | 1585.9 |
| K-factor | 32 |
| Floor | 1069.6 |
| Highest | 1585.9 (2026-02-28) |
| Min/Max +/- allowed | 95.7 |
| Rating Change () | |
| Games | 14 |
| Score | 7.5 |
| We | 7.32 |
| SWe | 0.18 |
| Temp +/- | 5.9 |
| Penalties | 0 |
| Weight perform | 1587.7 |
| Final +/- | +5.9 |
| New Rating () | |
| Rating | 1591.8 |
| K-factor | 32 |
| Floor | 1091.8 |
| Highest | 1591.8 (2026-04-01) |
| Min/Max +/- allowed | 94.9 |
Rapid 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 |
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 | NMBCU Trials 3 2026 (U18) | Standard | 2026-04-18 | 2026-04-18 | Nelson Mandela Bay (ENM) | 5 | 1590.5 | 5 | 3.5 | 1572.7 | -3.6 | Details |
| 2 | South African Junior Closed Chess Championship 2026 (U18 Open) | Classical | 2026-03-28 | 2026-04-02 | Bojanala Platina (NBR) | 9 | 1590.5 | 9 | 4 | 1629.7 | 11.6 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | NMBCU Trial 1 2026 (U18) | Standard | 2026-02-20 | 2026-02-21 | Nelson Mandela Bay (ENM) | 5 | 1572.3 | 5 | 3.5 | 1647.5 | 6.6 | Details |
| 2 | 2025 Mzansi Individual Championships (U18 Open) | Classical | 2025-12-17 | 2025-12-20 | Nelson Mandela Bay (ENM) | 6 | 1514 | 6 | 2.5 | 1501.4 | -1.8 | Details |
| 3 | 2025 Mzansi Inter Provincial Team Championships (U18 Open) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1514 | 5 | 4.5 | 1783 | 25.7 | Details |
| 4 | EC Closed 2025 (U18 Boys) | Standard | 2025-09-06 | 2025-09-07 | Nelson Mandela Bay (ENM) | 6 | 1482.3 | 6 | 3.5 | 1632.7 | 19.9 | Details |
| 5 | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U18 Open) | Standard | 2025-07-11 | 2025-07-12 | Amathole (EAL) | 6 | 1416.7 | 6 | 4 | 1620.1 | 22.4 | Details |
| 6 | NMBCU Closed 2025 (U18) | Standard | 2025-06-13 | 2025-06-14 | Nelson Mandela Bay (ENM) | 6 | 1361.5 | 6 | 4 | 1632.1 | 31.5 | Details |
| 7 | NMBCU Trial 4 2025 (U18) | Standard | 2025-05-09 | 2025-05-10 | Nelson Mandela Bay (ENM) | 6 | 1378.6 | 6 | 3.5 | 1414 | 5.6 | Details |
| 8 | Karen Ashworth 2025 (B) | Standard | 2025-04-26 | 2025-04-26 | Nelson Mandela Bay (ENM) | 5 | 1378.6 | 5 | 2 | 1218.7 | -16.3 | Details |
| 9 | NMB 3rd Trials 2025 (U18) | Standard | 2025-04-11 | 2025-04-12 | Nelson Mandela Bay (ENM) | 6 | 1386.9 | 6 | 3.5 | 1341.1 | -5.1 | Details |
| 10 | NMB 2nd Trials 2025 (U18) | Standard | 2025-03-07 | 2025-03-08 | Nelson Mandela Bay (ENM) | 6 | 1370.5 | 6 | 4 | 1457.3 | 10.3 | Details |
| 11 | Pearson High Chess Festival 2025 (B) | Standard | 2025-02-21 | 2025-02-22 | Nelson Mandela Bay (ENM) | 5 | 1350 | 4 | 2.5 | 1514.8 | 12.8 | Details |
| 12 | NMBCU vs BCC Derby Chess Invitational 2025 (U16) | Standard | 2025-01-10 | 2025-01-11 | Nelson Mandela Bay (ENM) | 5 | 1382.8 | 5 | 1 | 1194.7 | -19.6 | Details |
| 13 | NMBCU vs BCC Derby Chess Invitational 2025 (Blitz Open A) | Blitz | 2025-01-12 | 2025-01-12 | Nelson Mandela Bay (ENM) | 9 | 1382.8 | 9 | 4.5 | 1364.9 | -0.8 | Details |
| 14 | Mzansi Interprovincial Youth Chess Championships 2024 (U16 Open Championship) | Classical | 2024-12-16 | 2024-12-19 | Capricorn (LCP) | 7 | 1431.4 | 7 | 2.5 | 1252.8 | -30.2 | Details |
| 15 | NMBCU Closed 2024 (U16) | Standard | 2024-09-20 | 2024-09-21 | Nelson Mandela Bay (ENM) | 6 | 1414.5 | 6 | 4 | 1512.6 | 10.6 | Details |
| 16 | NMBCU Trials 4 2024 (U16) | Standard | 2024-07-12 | 2024-07-13 | Nelson Mandela Bay (ENM) | 6 | 1440.8 | 6 | 3 | 1300.1 | -16.4 | Details |
| 17 | NMBCU Trial 3 2024 (U16) | Standard | 2024-05-10 | 2024-05-11 | Nelson Mandela Bay (ENM) | 6 | 1285.5 | 6 | 4.5 | 1564.2 | 32.7 | Details |
| 18 | NMBCU Trials 2 2024 (U16) | Standard | 2024-04-12 | 2024-04-13 | Nelson Mandela Bay (ENM) | 6 | 1254.1 | 6 | 4 | 1401.4 | 17.4 | Details |
| 19 | Madibaz Chess Tournament 2024 (B) | Standard | 2024-03-01 | 2024-03-02 | Nelson Mandela Bay (ENM) | 5 | 1168.6 | 4 | 4 | 1779.3 | 47.5 | Details |
| 20 | NMBCU Trials 1 2024 (U16) | Standard | 2024-02-16 | 2024-02-16 | Nelson Mandela Bay (ENM) | 6 | 1155.8 | 6 | 3 | 1198 | 7.1 | Details |
| 21 | NMBCU Trial 4 2023 (U16) | Standard | 2023-07-28 | 2023-07-29 | Nelson Mandela Bay (ENM) | 5 | 1200 | 5 | 1 | 955.8 | -24.6 | Details |
Game statistics ( )
| Games | 5 |
| Wins | 3 |
| Draws | 1 |
| Losses | 1 |
| White | 3 |
| Black | 2 |
| White wins | 2 |
| Black wins | 1 |
| Score | 3.5 |
| Percent | 70 |
| Dp | 170 |
| AOR | 1402.7 |
| Performance | 1572.7 |
Game statistics ()
| Games | 19 |
| Wins | 7 |
| Draws | 8 |
| Losses | 4 |
| White | 11 |
| Black | 8 |
| White wins | 3 |
| Black wins | 4 |
| Score | 11 |
| Percent | 57.9 |
| Dp | 67.1 |
| AOR | 1552.3 |
| Performance | 1619.4 |
Game statistics (History)
| Games | 135 |
| Wins | 60 |
| Draws | 33 |
| Losses | 42 |
| White | 73 |
| Black | 62 |
| White wins | 28 |
| Black wins | 32 |
| Score | 76.5 |
| Percent | 56.7 |
| Dp | 56.7 |
| AOR | 1396.7 |
| Performance | 1453.4 |
Rankings (Main)
| National | |
| Overall | 1057 |
| Gender | 968 |
| Age group | 108 |
| Gender/Age | 91 |
| Provincial | |
| Overall | 100 |
| Gender | 92 |
| Age group | 15 |
| Gender/Age | 14 |
| Regional | |
| Overall | 45 |
| Gender | 39 |
| Age group | 7 |
| Gender/Age | 6 |
Rankings (Standard)
| National | |
| Overall | 1019 |
| Gender | 925 |
| Age group | 106 |
| Gender/Age | 89 |
| Provincial | |
| Overall | 99 |
| Gender | 92 |
| Age group | 16 |
| Gender/Age | 15 |
| Regional | |
| Overall | 42 |
| Gender | 37 |
| Age group | 7 |
| Gender/Age | 6 |
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 | 14 |
| Score | 7.5 |
| Percent | 53.6 |
| Aor | 1579 |
| Dp | 30.4 |
| Prat | 1609.3 |
Performance ()
| Games | 19 |
| Score | 11 |
| Percent | 57.9 |
| Aor | 1552.3 |
| Dp | 67.1 |
| Prat | 1619.4 |
Performance (12 months)
| Games | 59 |
| Score | 35 |
| Percent | 59.3 |
| Aor | 1489.9 |
| Dp | 79.2 |
| Prat | 1569.1 |
Performance (History)
| Games | 135 |
| Score | 76.5 |
| Percent | 56.7 |
| Aor | 1396.7 |
| Dp | 56.7 |
| Prat | 1453.4 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Jaffray, J (Joseph) | 5 | 3 | 2 | NMBCU Trial 4 2023 (U16) | EC Closed 2025 (U18 Boys) | Details |
| Overall | 2 | Dugmore, D (Deacon) | 4 | 2 | 2 | NMBCU Trials 2 2024 (U16) | NMBCU Closed 2024 (U16) | Details |
| Overall | 3 | Reid, L (Liam) | 4 | 2 | 2 | NMBCU Trial 4 2023 (U16) | NMB 3rd Trials 2025 (U18) | Details |
| Overall | 4 | Chipunza, J (James) | 3 | 3 | 0 | NMBCU Trial 4 2025 (U18) | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U18 Open) | Details |
| Overall | 5 | Hall, J (Joshua) | 3 | 3 | 0 | NMBCU Trial 3 2024 (U16) | NMBCU Trial 1 2026 (U18) | Details |
| Standard | 1 | Jaffray, J (Joseph) | 5 | 3 | 2 | NMBCU Trial 4 2023 (U16) | EC Closed 2025 (U18 Boys) | Details |
| Standard | 2 | Dugmore, D (Deacon) | 4 | 2 | 2 | NMBCU Trials 2 2024 (U16) | NMBCU Closed 2024 (U16) | Details |
| Standard | 3 | Chipunza, J (James) | 3 | 3 | 0 | NMBCU Trial 4 2025 (U18) | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U18 Open) | Details |
| Standard | 4 | Swart, R (Ruan) | 3 | 2 | 1 | NMBCU Trial 4 2023 (U16) | 2025 Mzansi Inter Provincial Team Championships (U18 Open) | Details |
| Standard | 5 | Hall, J (Joshua) | 3 | 3 | 0 | NMBCU Trial 3 2024 (U16) | NMBCU Trial 1 2026 (U18) | Details |