PLAYER PAGE
Gustav Koen
1160158922Cape Town (WCT)Personal
Main rating
| Rating | 1338.9 |
| K-factor | 36 |
| Floor | 829.1 |
| Highest | 1553.7 (2023-07-01) |
| Min/Max +/- allowed | 100 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1343.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1338.9 |
| K-factor | 36 |
| Floor | 829.1 |
| Highest | 1553.7 (2023-07-01) |
| Min/Max +/- allowed | 100.2 |
Standard rating
| Rating | 1264.5 |
| K-factor | 36 |
| Floor | 829.1 |
| Highest | 1347.9 (2023-09-01) |
| Min/Max +/- allowed | 134.3 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1189.1 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1264.5 |
| K-factor | 36 |
| Floor | 829.1 |
| Highest | 1347.9 (2023-09-01) |
| Min/Max +/- allowed | 134.3 |
Rapid rating
| Rating | 1352.9 |
| K-factor | 36 |
| Floor | 852.9 |
| Highest | 1633 (2023-07-01) |
| Min/Max +/- allowed | 89.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1351.3 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1352.9 |
| K-factor | 36 |
| Floor | 852.9 |
| Highest | 1633 (2023-07-01) |
| Min/Max +/- allowed | 89.5 |
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 |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | CT Metro District East Schools Chess Individuals Trials 2026 (U11 Boys) | Standard | 2026-02-07 | 2026-02-08 | Cape Town (WCT) | 6 | 1285.9 | 6 | 4 | 1393 | 0 | Details |
| 2 | COGH 2026 (U12) | Rapid | 2026-01-31 | 2026-02-01 | Cape Town (WCT) | 6 | 1285.9 | 6 | 3 | 1524 | 0 | Details |
| 3 | Gordons Bay Primary Chess Championship 2025 (Open) | Rapid | 2025-10-25 | 2025-10-25 | Cape Town (WCT) | 5 | 1288.8 | 5 | 3 | 1409.1 | 0 | Details |
| 4 | Cape Town Chess Federation Club League 2025 (E) | Standard | 2025-08-16 | 2025-08-23 | Cape Town (WCT) | 6 | 1307.2 | 6 | 2 | 1080.4 | 0 | Details |
| 5 | Rhenish Primary 2025 (U10) | Rapid | 2025-09-20 | 2025-09-20 | Cape Winelands (WCW) | 5 | 1289.4 | 5 | 3 | 1434.3 | 0 | Details |
| 6 | Helderberg Chess Club Open 2025 (U9) | Standard | 2025-06-07 | 2025-06-07 | Cape Town (WCT) | 5 | 1286.8 | 5 | 2 | 1243 | 0 | Details |
| 7 | Western Cape Schools Individual Championship 2025 (U9 Boys) | Standard | 2025-05-17 | 2025-05-18 | Cape Winelands (WCW) | 6 | 1287.2 | 6 | 2 | 1212.4 | 0 | Details |
| 8 | Cape Town Open Chess Festival 2025 (Junior Rapid) | Rapid | 2025-03-21 | 2025-03-21 | Cape Town (WCT) | 6 | 1307.9 | 6 | 2 | 1142.9 | 0 | Details |
| 9 | CT Metro Schools Individual Closed 2025 (U9 Open) | Standard | 2025-03-01 | 2025-03-02 | Cape Town (WCT) | 6 | 1307.9 | 6 | 3 | 1277.8 | 0 | Details |
| 10 | Cape of Good Hope Open 2025 (U10) | Rapid | 2025-02-22 | 2025-02-22 | Cape Town (WCT) | 6 | 1280.9 | 6 | 3 | 1241.1 | 0 | Details |
| 11 | CT Metro District East Schools Chess Individuals Trials 2025 (U9 Boys) | Standard | 2025-02-01 | 2025-02-01 | Cape Town (WCT) | 5 | 1280.9 | 5 | 4 | 1471.6 | 0 | Details |
| 12 | Helderberg Chess Club PS Development Tournament 2025 (U9) | Standard | 2025-01-25 | 2025-01-25 | Cape Town (WCT) | 5 | 1278 | 5 | 3.5 | 1417.2 | 0 | Details |
| 13 | 2025 Kraaifontein Open Chess Championships (Rapid Open) | Rapid | 2025-01-05 | 2025-01-05 | Cape Town (WCT) | 6 | 1278 | 6 | 0 | 884.7 | 0 | Details |
| 14 | 2025 Kraaifontein Open Chess Championships (Rapid U10) | Rapid | 2025-01-04 | 2025-01-04 | Cape Town (WCT) | 6 | 1278 | 6 | 4.5 | 1480.8 | 0 | Details |
| 15 | Helderberg Chess Club Open 2024 (B) | Standard | 2024-11-09 | 2024-11-10 | Cape Town (WCT) | 6 | 1329.1 | 5 | 1.5 | 1045.1 | 0 | Details |
| 16 | Grant East Annual Primary School Invitational Chess Tournament 2024 (U9) | Standard | 2024-10-05 | 2024-10-05 | Cape Town (WCT) | 5 | 1317.4 | 5 | 3.5 | 1389.3 | 0 | Details |
| 17 | CT Metro District East Top Schools Chess 2024 (U9 Mixed) | Standard | 2024-07-27 | 2024-07-28 | Cape Town (WCT) | 5 | 1260.9 | 5 | 4 | 1489 | 0 | Details |
| 18 | Curro Durbanville Chess Rapid Open 2024 (Beginner) | Rapid | 2024-07-13 | 2024-07-13 | Cape Town (WCT) | 6 | 1260.9 | 6 | 4 | 1350.7 | 0 | Details |
| 19 | Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) | Standard | 2024-03-02 | 2024-03-03 | Cape Town (WCT) | 6 | 1274 | 6 | 3 | 1212 | 0 | Details |
| 20 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | Standard | 2024-02-03 | 2024-02-03 | Cape Town (WCT) | 5 | 1282.4 | 5 | 3 | 1239.6 | 0 | Details |
| 21 | Grant East Primary School Invitational Chess Tournament 2023 (U9 Mixed) | Rapid | 2023-11-04 | 2023-11-04 | Cape Town (WCT) | 6 | 1263 | 6 | 4 | 1390.3 | 0 | Details |
| 22 | Western Cape Top Schools 2023 (U9 Mixed) | Standard | 2023-09-02 | 2023-09-03 | Cape Winelands (WCW) | 6 | 1244.5 | 5 | 3 | 1342.6 | 0 | Details |
| 23 | CT Metro District East Top Schools Chess 2023 (U9 Mixed) | Rapid | 2023-07-29 | 2023-07-29 | Cape Town (WCT) | 5 | 1200 | 4 | 4 | 1619.9 | 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 | 12 |
| Wins | 7 |
| Draws | 0 |
| Losses | 5 |
| White | 6 |
| Black | 6 |
| White wins | 4 |
| Black wins | 3 |
| Score | 7 |
| Percent | 58.3 |
| Dp | 70.8 |
| AOR | 1387.6 |
| Performance | 1458.5 |
Game statistics (History)
| Games | 126 |
| Wins | 67 |
| Draws | 4 |
| Losses | 55 |
| White | 63 |
| Black | 63 |
| White wins | 32 |
| Black wins | 35 |
| Score | 69 |
| Percent | 54.8 |
| Dp | 40.5 |
| AOR | 1269.2 |
| Performance | 1309.7 |
Rankings (Main)
| National | |
| Overall | 4717 |
| Gender | 3947 |
| Age group | 411 |
| Gender/Age | 323 |
| Provincial | |
| Overall | 1440 |
| Gender | 1147 |
| Age group | 133 |
| Gender/Age | 92 |
| Regional | |
| Overall | 677 |
| Gender | 575 |
| Age group | 50 |
| Gender/Age | 41 |
Rankings (Standard)
| National | |
| Overall | 6603 |
| Gender | 5344 |
| Age group | 683 |
| Gender/Age | 531 |
| Provincial | |
| Overall | 1858 |
| Gender | 1420 |
| Age group | 226 |
| Gender/Age | 160 |
| Regional | |
| Overall | 849 |
| Gender | 692 |
| Age group | 90 |
| Gender/Age | 74 |
Rankings (Rapid)
| National | |
| Overall | 1204 |
| Gender | 1019 |
| Age group | 124 |
| Gender/Age | 99 |
| Provincial | |
| Overall | 593 |
| Gender | 489 |
| Age group | 67 |
| Gender/Age | 49 |
| Regional | |
| Overall | 280 |
| Gender | 248 |
| Age group | 30 |
| Gender/Age | 26 |
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 | 12 |
| Score | 7 |
| Percent | 58.3 |
| Aor | 1387.6 |
| Dp | 70.8 |
| Prat | 1458.5 |
Performance (12 months)
| Games | 45 |
| Score | 21 |
| Percent | 46.7 |
| Aor | 1329.4 |
| Dp | -28.3 |
| Prat | 1301.1 |
Performance (History)
| Games | 126 |
| Score | 69 |
| Percent | 54.8 |
| Aor | 1269.2 |
| Dp | 40.5 |
| Prat | 1309.7 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Poole, C (Cayden) | 3 | 2 | 1 | Helderberg Chess Club PS Development Tournament 2025 (U9) | Helderberg Chess Club Open 2025 (U9) | Details |
| Overall | 2 | Foster, B (Bjorn) | 3 | 1 | 2 | CT Metro District East Top Schools Chess 2023 (U9 Mixed) | Grant East Annual Primary School Invitational Chess Tournament 2024 (U9) | Details |
| Overall | 3 | Lin, J (Junming) | 3 | 1 | 2 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | CT Metro District East Schools Chess Individuals Trials 2026 (U11 Boys) | Details |
| Overall | 4 | Zwartz, Z (Zeke) | 3 | 3 | 0 | 2025 Kraaifontein Open Chess Championships (Rapid U10) | COGH 2026 (U12) | Details |
| Overall | 5 | Kruger, J (Josua Baruch) | 2 | 1 | 1 | Grant East Primary School Invitational Chess Tournament 2023 (U9 Mixed) | Rhenish Primary 2025 (U10) | Details |
| Standard | 1 | Poole, C (Cayden) | 3 | 2 | 1 | Helderberg Chess Club PS Development Tournament 2025 (U9) | Helderberg Chess Club Open 2025 (U9) | Details |
| Standard | 2 | Burnett, T (Tomas) | 2 | 2 | 0 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | Grant East Annual Primary School Invitational Chess Tournament 2024 (U9) | Details |
| Standard | 3 | Foster, B (Bjorn) | 2 | 0 | 2 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | Grant East Annual Primary School Invitational Chess Tournament 2024 (U9) | Details |
| Standard | 4 | Lourens, S (Simeon Juda) | 2 | 2 | 0 | Helderberg Chess Club PS Development Tournament 2025 (U9) | Western Cape Schools Individual Championship 2025 (U9 Boys) | Details |
| Standard | 5 | Onyire, W (Winner) | 2 | 1 | 1 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | Helderberg Chess Club PS Development Tournament 2025 (U9) | Details |
| Rapid | 1 | Webb, P (Paul) | 2 | 0 | 2 | CT Metro District East Top Schools Chess 2023 (U9 Mixed) | Grant East Primary School Invitational Chess Tournament 2023 (U9 Mixed) | Details |
| Rapid | 2 | Kruger, J (Josua Baruch) | 2 | 1 | 1 | Grant East Primary School Invitational Chess Tournament 2023 (U9 Mixed) | Rhenish Primary 2025 (U10) | Details |
| Rapid | 3 | Zwartz, Z (Zeke) | 2 | 2 | 0 | 2025 Kraaifontein Open Chess Championships (Rapid U10) | COGH 2026 (U12) | Details |