PLAYER PAGE
Juhann Krog
108086552Bojanala Platina (NBR)Personal
Main rating
| Rating | 1336.4 |
| K-factor | 36 |
| Floor | 836.4 |
| Highest | 1336.4 (2025-09-01) |
| Min/Max +/- allowed | 137 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1134.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1336.4 |
| K-factor | 36 |
| Floor | 836.4 |
| Highest | 1336.4 (2025-09-01) |
| Min/Max +/- allowed | 136.5 |
Standard rating
| Rating | 1235.4 |
| K-factor | 36 |
| Floor | 748 |
| Highest | 1260.8 (2020-01-01) |
| Min/Max +/- allowed | 152.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 681.1 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1235.4 |
| K-factor | 36 |
| Floor | 748 |
| Highest | 1260.8 (2020-01-01) |
| Min/Max +/- allowed | 152.1 |
Rapid rating
| Rating | 1091.8 |
| K-factor | 40 |
| Floor | 591.8 |
| Highest | 1200 (2018-02-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1090.9 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1091.8 |
| K-factor | 40 |
| Floor | 591.8 |
| Highest | 1200 (2018-02-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 622.8 |
| K-factor | 40 |
| Floor | 500 |
| Highest | 1200 (2024-02-01) |
| 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 | 622.8 |
| K-factor | 40 |
| Floor | 500 |
| Highest | 1200 (2024-02-01) |
| Min/Max +/- allowed | 165.8 |
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 | Bojanala's Clash Of Schools 2025 (U17+B-Juniors) | Rapid | 2025-08-02 | 2025-08-02 | Bojanala Platina (NBR) | 5 | 1308.4 | 5 | 4 | 1503.7 | 0 | Details |
| 2 | Bojanala's Clash Of Schools - Secondary 2024 (U17) | Rapid | 2024-07-27 | 2024-07-27 | Bojanala Platina (NBR) | 5 | 1284.9 | 5 | 3.5 | 1458 | 0 | Details |
| 3 | Bojanala School League 2023 (U15) | Rapid | 2023-08-19 | 2023-08-19 | Bojanala Platina (NBR) | 5 | 1251.6 | 5 | 4 | 1481.7 | 0 | Details |
| 4 | Bojanala Chess Federation Clash of Schools 2022 (Prestige) | Standard | 2022-07-22 | 2022-07-22 | Bojanala Platina (NBR) | 5 | 1256.4 | 5 | 1.5 | 1066.6 | 0 | Details |
| 5 | 2nd One For The Ages 2022 (U16) | Standard | 2022-07-30 | 2022-07-30 | Bojanala Platina (NBR) | 5 | 1256.4 | 5 | 3 | 1419.6 | 0 | Details |
| 6 | Laerskool Proteapark 2020 (B) | Standard | 2020-02-29 | 2020-02-29 | Bojanala Platina (NBR) | 5 | 1275.5 | 5 | 2 | 1173.3 | 0 | Details |
| 7 | 2019 South African Junior Team Championships (U12B) | Classical | 2020-01-04 | 2020-01-08 | 4 Knights (4K) | 7 | 1240.2 | 7 | 4 | 1365.1 | 0 | Details |
| 8 | NW Open 2019 (B) | Standard | 2019-10-12 | 2019-10-12 | Bojanala Platina (NBR) | 5 | 1213.5 | 3 | 1 | 1117.2 | 0 | Details |
| 9 | Inter Region 2019 (U12 Open) | Standard | 2019-10-19 | 2019-10-19 | Bojanala Platina (NBR) | 5 | 1213.5 | 4 | 3 | 1400.7 | 0 | Details |
| 10 | Laerskool Brits 2019 (U12) | Standard | 2019-08-31 | 2019-08-31 | Bojanala Platina (NBR) | 5 | 1187.9 | 5 | 4 | 1280 | 0 | Details |
| 11 | 2019 Super 12 Laerskole (Seniors) | Rapid | 2019-05-04 | 2019-05-04 | Tshwane (GTP) | 5 | 1121 | 5 | 4 | 1469.1 | 0 | Details |
| 12 | Inter Regional Chess Championship 2019 (U12) | Standard | 2019-05-10 | 2019-05-11 | Mangaung (FMB) | 5 | 1121 | 5 | 3 | 1166 | 0 | Details |
| 13 | Rustenburg Noord Primary Tournament 2019 (U12) | Standard | 2019-02-09 | 2019-02-09 | Bojanala Platina (NBR) | 5 | 1015.1 | 5 | 5 | 1421.6 | 0 | Details |
| 14 | Laerskool Vastrap Tournament 2019 (B) | Standard | 2019-02-23 | 2019-02-23 | Bojanala Platina (NBR) | 5 | 1015.1 | 5 | 2 | 1024.8 | 0 | Details |
| 15 | Fields College Open 2019 (U12) | Standard | 2019-02-02 | 2019-02-02 | Bojanala Platina (NBR) | 5 | 1015.1 | 5 | 3.5 | 1132.6 | 0 | Details |
| 16 | South African Junior Team Championships 2018 (U12C) | Classical | 2018-12-16 | 2018-12-20 | 4 Knights (4K) | 7 | 1094.7 | 7 | 2 | 848.1 | 0 | Details |
| 17 | Lebone II Chess 2018 (U12) | Standard | 2018-09-01 | 2018-09-01 | Cape Town (WCT) | 5 | 1039.7 | 5 | 4 | 1166.9 | 0 | Details |
| 18 | Bojanala Regionals 2018 (U12) | Standard | 2018-09-15 | 2018-09-15 | Bojanala Platina (NBR) | 5 | 1039.7 | 5 | 3 | 1036.8 | 0 | Details |
| 19 | Boys and Girls 2018 (U12 Boys) | Standard | 2018-08-25 | 2018-08-25 | Dr Kenneth Kaunda (NWP) | 5 | 845.7 | 5 | 3.5 | 1051.6 | 0 | Details |
| 20 | Laerskool Brits Tournament 2018 (U12) | Standard | 2018-08-04 | 2018-08-04 | Bojanala Platina (NBR) | 5 | 845.7 | 5 | 4 | 1248.5 | 0 | Details |
| 21 | Hoërskool Frikkie Meyer 2018 (C) | Standard | 2018-07-21 | 2018-07-21 | Bojanala Platina (NBR) | 5 | 729.6 | 5 | 4 | 1111.1 | 0 | Details |
| 22 | 2018 Super 12 (Junior) | Rapid | 2018-05-05 | 2018-05-05 | Tshwane (GTP) | 5 | 717.5 | 5 | 1 | 724.6 | 0 | Details |
| 23 | Laerskool Rustenburg 2018 (D) | Standard | 2018-03-24 | 2018-03-24 | Bojanala Platina (NBR) | 5 | 662.7 | 5 | 3.5 | 918.6 | 0 | Details |
| 24 | Hoerskool Brits 2018 (U12) | Standard | 2018-03-17 | 2018-03-17 | Bojanala Platina (NBR) | 5 | 662.7 | 5 | 2 | 717.8 | 0 | Details |
| 25 | Laerskool Vastrap 2018 (U12) | Standard | 2018-02-03 | 2018-02-03 | Bojanala Platina (NBR) | 5 | 672 | 5 | 2 | 659.8 | 0 | Details |
| 26 | South African Junior Team Championships 2017 (U10D) | Classical | 2018-01-04 | 2018-01-08 | 4 Knights (4K) | 7 | 622.8 | 7 | 5 | 802.1 | 0 | Details |
| 27 | Bojanala Inter-Region 2017 (U10 Boys) | Standard | 2017-09-16 | 2017-09-16 | Bojanala Platina (NBR) | 5 | 527 | 5 | 3 | 677 | 0 | Details |
| 28 | Bojanala Primary School League 2017 (U9A) | Standard | 2017-08-05 | 2017-08-05 | Bojanala Platina (NBR) | 5 | 582 | 5 | 1 | 500 | 0 | Details |
| 29 | 2017 Laerskool Rustenburg (Section D) | Standard | 2017-07-29 | 2017-07-29 | Bojanala Platina (NBR) | 5 | 570 | 5 | 3 | 616 | 0 | Details |
| 30 | 2017 Super 12 (Juniors) | Rapid | 2017-05-27 | 2017-05-27 | Tshwane (GTP) | 5 | 100 | 5 | 2.5 | 500 | 0 | Details |
| 31 | 2017 Inter-Regional (Under 10 Open) | Standard | 2017-05-12 | 2017-05-13 | Bojanala Platina (NBR) | 5 | 504 | 5 | 2 | 503 | 0 | Details |
| 32 | Proteapark Chess 2017 (U10) | Standard | 2017-04-22 | 2017-04-22 | Bojanala Platina (NBR) | 5 | 504 | 5 | 4 | 775 | 0 | Details |
| 33 | Hoerskool Brits Chess 2017 (D) | Standard | 2017-03-11 | 2017-03-11 | Bojanala Platina (NBR) | 5 | 500 | 5 | 2.5 | 514 | 0 | Details |
| 34 | Laerskool Olienpark 2017 (Development) | Standard | 2017-02-25 | 2017-02-25 | Bojanala Platina (NBR) | 5 | 500 | 5 | 2.5 | 529 | 0 | Details |
| 35 | Vastrap 2017 (Development) | Standard | 2017-02-11 | 2017-02-17 | Bojanala Platina (NBR) | 5 | 500 | 5 | 3.5 | 649 | 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 | 133 |
| Wins | 78 |
| Draws | 7 |
| Losses | 48 |
| White | 73 |
| Black | 60 |
| White wins | 43 |
| Black wins | 35 |
| Score | 81.5 |
| Percent | 61.3 |
| Dp | 95.9 |
| AOR | 1041.2 |
| Performance | 1137 |
Rankings (Main)
| National | |
| Overall | 4797 |
| Gender | 4010 |
| Age group | 626 |
| Gender/Age | 521 |
| Provincial | |
| Overall | 303 |
| Gender | 265 |
| Age group | 42 |
| Gender/Age | 33 |
| Regional | |
| Overall | 199 |
| Gender | 168 |
| Age group | 29 |
| Gender/Age | 23 |
Rankings (Standard)
| 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 (Rapid)
| National | |
| Overall | 6135 |
| Gender | 4505 |
| Age group | 572 |
| Gender/Age | 462 |
| Provincial | |
| Overall | 225 |
| Gender | 168 |
| Age group | 41 |
| Gender/Age | 30 |
| Regional | |
| Overall | 223 |
| Gender | 166 |
| Age group | 41 |
| Gender/Age | 30 |
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 | 5 |
| Score | 4 |
| Percent | 80 |
| Aor | 1248.7 |
| Dp | 255 |
| Prat | 1503.7 |
Performance (History)
| Games | 133 |
| Score | 81.5 |
| Percent | 61.3 |
| Aor | 1041.2 |
| Dp | 95.9 |
| Prat | 1137 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Difotso, LR (Lebogang Rotondwa) | 4 | 2 | 2 | Laerskool Brits 2019 (U12) | 2nd One For The Ages 2022 (U16) | Details |
| Overall | 2 | Molefinyane, O (Otlotleng) | 4 | 3 | 1 | Laerskool Vastrap 2018 (U12) | Laerskool Brits 2019 (U12) | Details |
| Overall | 3 | Jansen, D (Danel) | 3 | 0 | 3 | Hoerskool Brits 2018 (U12) | Bojanala Regionals 2018 (U12) | Details |
| Overall | 4 | Ras, ME (Marise) | 2 | 0 | 2 | Laerskool Brits Tournament 2018 (U12) | Lebone II Chess 2018 (U12) | Details |
| Overall | 5 | Smit, D (Dian) | 2 | 1 | 1 | Laerskool Vastrap 2018 (U12) | Laerskool Vastrap Tournament 2019 (B) | Details |
| Standard | 1 | Difotso, LR (Lebogang Rotondwa) | 4 | 2 | 2 | Laerskool Brits 2019 (U12) | 2nd One For The Ages 2022 (U16) | Details |
| Standard | 2 | Molefinyane, O (Otlotleng) | 4 | 3 | 1 | Laerskool Vastrap 2018 (U12) | Laerskool Brits 2019 (U12) | Details |
| Standard | 3 | Jansen, D (Danel) | 3 | 0 | 3 | Hoerskool Brits 2018 (U12) | Bojanala Regionals 2018 (U12) | Details |
| Standard | 4 | Fourie, NP (Nathan Paul) | 2 | 0 | 2 | Bojanala Regionals 2018 (U12) | Inter Region 2019 (U12 Open) | Details |
| Standard | 5 | Sera, G (Galaletsang) | 2 | 1 | 1 | Fields College Open 2019 (U12) | Bojanala Chess Federation Clash of Schools 2022 (Prestige) | Details |