PLAYER PAGE
Onyekachi Oleh
1150303498Buffalo City (EBC)Personal
Main rating
| Rating | 1089.1 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| Min/Max +/- allowed | 166 |
| Rating Change () | |
| Games | 6 |
| Score | 0.5 |
| We | 1.74 |
| SWe | -1.04 |
| Temp +/- | -37.6 |
| Penalties | 0 |
| Weight perform | 975.8 |
| Final +/- | -37.6 |
| New Rating () | |
| Rating | 1051.6 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| Min/Max +/- allowed | 165.8 |
Standard rating
| Rating | 1077.3 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 6 |
| Score | 0.5 |
| We | 1.64 |
| SWe | -1.14 |
| Temp +/- | -41 |
| Penalties | 0 |
| Weight perform | 954.6 |
| Final +/- | -41 |
| New Rating () | |
| Rating | 1036.3 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| Min/Max +/- allowed | 165.8 |
Rapid rating
| Rating | 1111.7 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| 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 | 1111.7 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-05-01) |
| 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 (2024-05-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Eastern Cape Closed Championship 2026 (U12 Open) | Standard | 2026-09-25 | 2026-09-26 | Sarah Baartman (ESB) | 6 | 1089.1 | 6 | 0.5 | 903 | -37.6 | Details |
| 2 | Eastern Cape Chess Festival 2026 (Inter-Regionals U12) | Rapid | 2026-09-25 | 2026-09-25 | Sarah Baartman (ESB) | 5 | 1089.1 | 0 | 0 | 500 | 0 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | BCM Schools Chess All Ages Festival 2026 (U12 Open) | Rapid | 2026-07-25 | 2026-07-25 | Buffalo City (EBC) | 6 | 1089.1 | 1 | 0 | 1066.9 | -1.3 | Details |
| 2 | 2026 Buffalo City Closed (U12 Boys) | Standard | 2026-08-08 | 2026-08-08 | Buffalo City (EBC) | 5 | 1089.1 | 4 | 1 | 1083 | -2 | Details |
| 3 | 2026 Buffalo City Chess Trials 5 (U12) | Standard | 2026-07-11 | 2026-07-11 | Buffalo City (EBC) | 5 | 1100.1 | 4 | 1 | 1069.1 | -7.7 | Details |
| 4 | 2026 Buffalo City Chess Trials 4 (U12) | Standard | 2026-05-30 | 2026-05-30 | Buffalo City (EBC) | 5 | 1134.4 | 5 | 1 | 909 | -40.9 | Details |
| 5 | Vikings April Rapid 2026 (U12) | Rapid | 2026-04-18 | 2026-04-18 | Buffalo City (EBC) | 5 | 1134.4 | 5 | 2 | 1195.3 | 6.7 | Details |
| 6 | Hudson Park Primary Festival 2026 (U12) | Standard | 2026-03-07 | 2026-03-07 | Buffalo City (EBC) | 5 | 1107.4 | 5 | 3 | 1303 | 7.7 | Details |
| 7 | 3rd Annual WSC-ELIDZ Chess Extravaganza 2026 (U12) | Standard | 2026-03-14 | 2026-03-14 | Buffalo City (EBC) | 5 | 1107.4 | 5 | 2 | 1288.9 | 30.7 | Details |
| 8 | 2026 Buffalo City Chess Trials 3 (U12) | Standard | 2026-03-21 | 2026-03-21 | Buffalo City (EBC) | 5 | 1186.9 | 4 | 0 | 806.4 | -53.6 | Details |
| 9 | Vikings Rapid 2026 (B) | Rapid | 2026-02-21 | 2026-02-21 | Buffalo City (EBC) | 8 | 1186.9 | 6 | 1 | 985.1 | -20 | Details |
| 10 | 2026 Buffalo City Chess Trials 2 (U12 Boys) | Standard | 2026-02-28 | 2026-02-28 | Buffalo City | 5 | 1186.9 | 5 | 2 | 1146.5 | -6 | Details |
| 11 | 2026 Buffalo City Chess Trials 1 (U12) | Standard | 2026-02-07 | 2026-02-07 | Buffalo City (EBC) | 5 | 1188.7 | 5 | 2 | 1128.6 | -5.1 | Details |
| 12 | 5th BC Trails 2024 (U10B) | Standard | 2024-08-17 | 2024-08-17 | Buffalo City (EBC) | 5 | 1162.5 | 5 | 3 | 1276.4 | 12.1 | Details |
| 13 | 4th BC Trials 2024 (U10B) | Standard | 2024-06-08 | 2024-06-08 | Buffalo City (EBC) | 5 | 1178.1 | 5 | 2 | 1104.8 | -7.8 | Details |
| 14 | 3rd BC Trials 2024 (U10B) | Standard | 2024-05-11 | 2024-05-11 | Buffalo City (EBC) | 5 | 1200 | 5 | 2 | 1096.6 | -11 | 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 | 55 |
| Wins | 15 |
| Draws | 1 |
| Losses | 39 |
| White | 27 |
| Black | 28 |
| White wins | 8 |
| Black wins | 7 |
| Score | 15.5 |
| Percent | 28.2 |
| Dp | -185.5 |
| AOR | 1259.7 |
| Performance | 1074.3 |
Game statistics (History)
| Games | 70 |
| Wins | 22 |
| Draws | 1 |
| Losses | 47 |
| White | 35 |
| Black | 35 |
| White wins | 11 |
| Black wins | 11 |
| Score | 22.5 |
| Percent | 32.1 |
| Dp | -151.8 |
| AOR | 1244.3 |
| Performance | 1092.5 |
Rankings (Main)
| National | |
| Overall | 18164 |
| Gender | 13433 |
| Age group | 2975 |
| Gender/Age | 2085 |
| Provincial | |
| Overall | 1584 |
| Gender | 1188 |
| Age group | 219 |
| Gender/Age | 146 |
| Regional | |
| Overall | 521 |
| Gender | 391 |
| Age group | 80 |
| Gender/Age | 54 |
Rankings (Standard)
| National | |
| Overall | 13594 |
| Gender | 9954 |
| Age group | 2198 |
| Gender/Age | 1513 |
| Provincial | |
| Overall | 1298 |
| Gender | 964 |
| Age group | 181 |
| Gender/Age | 117 |
| Regional | |
| Overall | 434 |
| Gender | 323 |
| Age group | 64 |
| Gender/Age | 42 |
Rankings (Rapid)
| National | |
| Overall | 6128 |
| Gender | 4577 |
| Age group | 1100 |
| Gender/Age | 784 |
| Provincial | |
| Overall | 480 |
| Gender | 377 |
| Age group | 83 |
| Gender/Age | 59 |
| Regional | |
| Overall | 200 |
| Gender | 147 |
| Age group | 42 |
| Gender/Age | 27 |
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 | 55 |
| Score | 15.5 |
| Percent | 28.2 |
| Aor | 1259.7 |
| Dp | -185.5 |
| Prat | 1074.3 |
Performance (12 months)
| Games | 55 |
| Score | 15.5 |
| Percent | 28.2 |
| Aor | 1259.7 |
| Dp | -185.5 |
| Prat | 1074.3 |
Performance (History)
| Games | 70 |
| Score | 22.5 |
| Percent | 32.1 |
| Aor | 1244.3 |
| Dp | -151.8 |
| Prat | 1092.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Mkhize, Z (Zamambo) | 4 | 2 | 2 | 2026 Buffalo City Chess Trials 3 (U12) | 2026 Buffalo City Chess Trials 4 (U12) | Details |
| Overall | 2 | Ndlume, Z (Zusange) | 3 | 2 | 1 | 2026 Buffalo City Chess Trials 2 (U12 Boys) | Vikings April Rapid 2026 (U12) | Details |
| Overall | 3 | Xu, J (Jiayi) | 2 | 2 | 0 | 4th BC Trials 2024 (U10B) | 5th BC Trails 2024 (U10B) | Details |
| Overall | 4 | Mazikana, E (Elsie) | 2 | 0 | 2 | 5th BC Trails 2024 (U10B) | 2026 Buffalo City Chess Trials 5 (U12) | Details |
| Overall | 5 | Magenu, P (Phumelela) | 2 | 1 | 1 | 2026 Buffalo City Chess Trials 1 (U12) | 2026 Buffalo City Chess Trials 3 (U12) | Details |
| Standard | 1 | Mkhize, Z (Zamambo) | 3 | 1 | 2 | 2026 Buffalo City Chess Trials 3 (U12) | 2026 Buffalo City Chess Trials 4 (U12) | Details |
| Standard | 2 | Karthikeyan, P (Pratik) | 2 | 0 | 2 | 2026 Buffalo City Chess Trials 2 (U12 Boys) | 2026 Buffalo City Chess Trials 4 (U12) | Details |
| Standard | 3 | Ndlume, Z (Zusange) | 2 | 2 | 0 | 2026 Buffalo City Chess Trials 2 (U12 Boys) | Hudson Park Primary Festival 2026 (U12) | Details |
| Standard | 4 | Lavezzari, C (Carlo) | 2 | 2 | 0 | 2026 Buffalo City Chess Trials 1 (U12) | 2026 Buffalo City Chess Trials 3 (U12) | Details |
| Standard | 5 | Magenu, P (Phumelela) | 2 | 1 | 1 | 2026 Buffalo City Chess Trials 1 (U12) | 2026 Buffalo City Chess Trials 3 (U12) | Details |