PLAYER PAGE
Jason Griessel
1150305436Cape Town (WCT)Personal
Main rating
| Rating | 1421 |
| K-factor | 32 |
| Floor | 1043.9 |
| Highest | 1543.9 (2025-11-01) |
| Min/Max +/- allowed | 102 |
| Rating Change () | |
| Games | 7 |
| Score | 3.5 |
| We | 3.25 |
| SWe | 0.03 |
| Temp +/- | 0.9 |
| Penalties | 0 |
| Weight perform | 1406.4 |
| Final +/- | +0.9 |
| New Rating () | |
| Rating | 1421.9 |
| K-factor | 32 |
| Floor | 1043.9 |
| Highest | 1543.9 (2025-11-01) |
| Min/Max +/- allowed | 101.6 |
Standard rating
| Rating | 1420.4 |
| K-factor | 32 |
| Floor | 987.3 |
| Highest | 1487.3 (2026-06-01) |
| Min/Max +/- allowed | 110.1 |
| Rating Change () | |
| Games | 7 |
| Score | 3.5 |
| We | 3.25 |
| SWe | 0.25 |
| Temp +/- | 8.1 |
| Penalties | 0 |
| Weight perform | 1439 |
| Final +/- | +18.6 |
| New Rating () | |
| Rating | 1439 |
| K-factor | 32 |
| Floor | 987.3 |
| Highest | 1487.3 (2026-06-01) |
| Min/Max +/- allowed | 110.1 |
Rapid rating
| Rating | 1405.9 |
| K-factor | 32 |
| Floor | 909.6 |
| Highest | 1475.9 (2024-05-01) |
| Min/Max +/- allowed | 111.9 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1370 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1405.9 |
| K-factor | 32 |
| Floor | 909.6 |
| Highest | 1475.9 (2024-05-01) |
| Min/Max +/- allowed | 111.9 |
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 | CTCF Women's Championship 2026 (U12 Junior) | Standard | 2026-09-24 | 2026-09-24 | Cape Town (WCT) | 5 | 1421 | 5 | 3.5 | 1649.3 | 34.5 | Details |
| 2 | CTCF League 2026 (D) | Classical | 2026-08-01 | 2026-09-20 | Cape Town (WCT) | 11 | 1421 | 2 | 0 | 974.4 | -33.6 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Curro Chess Open Rapid 2026 (U12) | Rapid | 2026-08-29 | 2026-08-29 | Cape Town (WCT) | 6 | 1421 | 6 | 3 | 1217.1 | -24.4 | Details |
| 2 | CT PS District East Top Schools 2026 (U11 Mixed) | Standard | 2026-08-01 | 2026-08-02 | Cape Town (WCT) | 6 | 1421 | 6 | 3.5 | 1395.4 | -4 | Details |
| 3 | African Chess Academy Invitational 2026 (U12+U14 Open) | Rapid | 2026-07-18 | 2026-07-18 | Cape Town (WCT) | 6 | 1434 | 6 | 4.5 | 1589.4 | 21.3 | Details |
| 4 | South African Open Championship 2026 (U11 Boys) | Classical | 2026-07-02 | 2026-07-05 | Cape Town (WCT) | 7 | 1434 | 7 | 4 | 1405.4 | -5.9 | Details |
| 5 | Curro Hermanus Winter Open 2026 (U11) | Rapid | 2026-06-20 | 2026-06-20 | Overberg (WOS) | 6 | 1508.4 | 6 | 4 | 1419.9 | -11.8 | Details |
| 6 | CTCF Open Championship 2026 (U12) | Classical | 2026-06-13 | 2026-06-14 | Cape Town (WCT) | 6 | 1508.4 | 5 | 1.5 | 1166.5 | -62.7 | Details |
| 7 | 2026 WCSC PS Individual Championship (U11 Boys) | Standard | 2026-05-16 | 2026-05-17 | Overberg (WOS) | 6 | 1459.6 | 6 | 4.5 | 1720.5 | 48.8 | Details |
| 8 | CT Metro Schools Individual Closed 2026 (U11 Boys) | Standard | 2026-03-07 | 2026-03-08 | Cape Town (WCT) | 6 | 1453.9 | 6 | 4 | 1482.5 | 5.8 | Details |
| 9 | CT Metro District East Schools Chess Individuals Trials 2026 (U11 Boys) | Standard | 2026-02-07 | 2026-02-08 | Cape Town (WCT) | 6 | 1473.6 | 6 | 4 | 1368.1 | -12 | Details |
| 10 | 2025 Mzansi Inter Provincial Team Championships (U12 Combined) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1544.2 | 6 | 2.5 | 1362.9 | -21.1 | Details |
| 11 | A & A Invitational Chess Tournament 2025 (U12+U14) | Standard | 2025-11-29 | 2025-11-29 | Cape Town (WCT) | 5 | 1544.2 | 4 | 1 | 1248.5 | -23.1 | Details |
| 12 | Grant East Annual Primary School Invitational Chess Tournament 2025 (U11 Boys) | Standard | 2025-10-18 | 2025-10-18 | Cape Town (WCT) | 5 | 1541 | 5 | 4 | 1551.9 | 2 | Details |
| 13 | Kleinmond Chess Club Open 2025 (U10) | Rapid | 2025-08-30 | 2025-08-30 | Overberg (WOS) | 6 | 1530.6 | 6 | 5 | 1613.3 | 6.5 | Details |
| 14 | Helderberg Chess Club Open 2025 (U11) | Standard | 2025-06-07 | 2025-06-07 | Cape Town (WCT) | 5 | 1428.8 | 5 | 3.5 | 1607.3 | 16.8 | Details |
| 15 | Cape Town Chess Junior League 2025 (U8+U10 Development) | Rapid | 2025-05-23 | 2025-05-31 | Cape Town (WCT) | 7 | 1428.8 | 5 | 5 | 1666 | 16.6 | Details |
| 16 | Western Cape Schools Individual Championship 2025 (U11 Boys) | Standard | 2025-05-17 | 2025-05-18 | Cape Winelands (WCW) | 6 | 1386.9 | 6 | 4 | 1523.8 | 16.1 | Details |
| 17 | CT Metro Schools Individual Closed 2025 (U11 Open) | Standard | 2025-03-01 | 2025-03-02 | Cape Town (WCT) | 6 | 1316.9 | 6 | 4 | 1543.8 | 27.1 | Details |
| 18 | CT Metro District East Schools Chess Individuals Trials 2025 (U11 Boys) | Standard | 2025-02-01 | 2025-02-02 | Cape Town (WCT) | 6 | 1312.8 | 6 | 4 | 1331.2 | 2.3 | Details |
| 19 | Helderberg Chess Club PS Development Tournament 2025 (U11 Boys) | Standard | 2025-01-25 | 2025-01-25 | Cape Town (WCT) | 5 | 1257.8 | 5 | 3 | 1438.9 | 18.3 | Details |
| 20 | Grant East Annual Primary School Invitational Chess Tournament 2024 (U9) | Standard | 2024-10-05 | 2024-10-05 | Cape Town (WCT) | 5 | 1295.6 | 5 | 3 | 1398.1 | 10.6 | Details |
| 21 | Kleinmond Chess Club Open 2024 (U10) | Rapid | 2024-09-07 | 2024-09-07 | Overberg (WOS) | 6 | 1303.8 | 6 | 3 | 1245.4 | -4.6 | Details |
| 22 | Cape Town Chess Federation Closed Chess Championships 2024 (U10) | Standard | 2024-06-15 | 2024-06-15 | Cape Town (WCT) | 5 | 1285 | 5 | 3.5 | 1386 | 10.5 | Details |
| 23 | Rhenish PS Tournament 2024 (U10) | Rapid | 2024-05-11 | 2024-05-11 | Cape Winelands (WCW) | 6 | 1200 | 6 | 4 | 1420.7 | 17.5 | Details |
| 24 | Western Cape PS Individuals Championship 2024 (U9 Boys) | Standard | 2024-05-04 | 2024-05-05 | West Coast (WCU) | 6 | 1293.1 | 6 | 3 | 1255.2 | -4.5 | Details |
| 25 | Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) | Standard | 2024-03-02 | 2024-03-03 | Cape Town (WCT) | 6 | 1231.5 | 6 | 4.5 | 1525.2 | 34.2 | Details |
| 26 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | Standard | 2024-02-03 | 2024-02-03 | Cape Town (WCT) | 5 | 1200 | 5 | 3 | 1369.7 | 15.8 | 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 | 61 |
| Wins | 34 |
| Draws | 5 |
| Losses | 22 |
| White | 30 |
| Black | 31 |
| White wins | 14 |
| Black wins | 20 |
| Score | 36.5 |
| Percent | 59.8 |
| Dp | 83.6 |
| AOR | 1343 |
| Performance | 1426.6 |
Game statistics (History)
| Games | 154 |
| Wins | 92 |
| Draws | 9 |
| Losses | 53 |
| White | 76 |
| Black | 78 |
| White wins | 44 |
| Black wins | 48 |
| Score | 96.5 |
| Percent | 62.7 |
| Dp | 107.6 |
| AOR | 1327.7 |
| Performance | 1435.3 |
Rankings (Main)
| National | |
| Overall | 3174 |
| Gender | 2700 |
| Age group | 274 |
| Gender/Age | 214 |
| Provincial | |
| Overall | 958 |
| Gender | 775 |
| Age group | 89 |
| Gender/Age | 60 |
| Regional | |
| Overall | 485 |
| Gender | 408 |
| Age group | 42 |
| Gender/Age | 33 |
Rankings (Standard)
| National | |
| Overall | 2814 |
| Gender | 2360 |
| Age group | 261 |
| Gender/Age | 202 |
| Provincial | |
| Overall | 813 |
| Gender | 633 |
| Age group | 86 |
| Gender/Age | 56 |
| Regional | |
| Overall | 421 |
| Gender | 345 |
| Age group | 37 |
| Gender/Age | 29 |
Rankings (Rapid)
| National | |
| Overall | 932 |
| Gender | 815 |
| Age group | 111 |
| Gender/Age | 86 |
| Provincial | |
| Overall | 438 |
| Gender | 379 |
| Age group | 60 |
| Gender/Age | 41 |
| Regional | |
| Overall | 191 |
| Gender | 177 |
| Age group | 25 |
| Gender/Age | 20 |
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 | 61 |
| Score | 36.5 |
| Percent | 59.8 |
| Aor | 1343 |
| Dp | 83.6 |
| Prat | 1426.6 |
Performance (12 months)
| Games | 71 |
| Score | 40 |
| Percent | 56.3 |
| Aor | 1357.3 |
| Dp | 53.9 |
| Prat | 1411.2 |
Performance (History)
| Games | 154 |
| Score | 96.5 |
| Percent | 62.7 |
| Aor | 1327.7 |
| Dp | 107.6 |
| Prat | 1435.3 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Nel, J (Joshua) | 6 | 4 | 2 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | A & A Invitational Chess Tournament 2025 (U12+U14) | Details |
| Overall | 2 | Kruger, J (Josua Baruch) | 4 | 1 | 3 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | CT PS District East Top Schools 2026 (U11 Mixed) | Details |
| Overall | 3 | Johnson, B (Brian) | 3 | 1 | 2 | Cape Town Chess Federation Closed Chess Championships 2024 (U10) | Kleinmond Chess Club Open 2025 (U10) | Details |
| Overall | 4 | Marais, A (Alexander) | 3 | 2 | 1 | Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) | CT PS District East Top Schools 2026 (U11 Mixed) | Details |
| Overall | 5 | Fourie, S (Steph) | 2 | 1 | 1 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) | Details |
| Standard | 1 | Nel, J (Joshua) | 5 | 3 | 2 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | A & A Invitational Chess Tournament 2025 (U12+U14) | Details |
| Standard | 2 | Kruger, J (Josua Baruch) | 3 | 0 | 3 | CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) | CT PS District East Top Schools 2026 (U11 Mixed) | Details |
| Standard | 3 | Marais, A (Alexander) | 3 | 2 | 1 | Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) | CT PS District East Top Schools 2026 (U11 Mixed) | Details |
| Standard | 4 | Kruger, W (Willem Lodewyk Kruger) | 2 | 1 | 1 | Western Cape PS Individuals Championship 2024 (U9 Boys) | South African Open Championship 2026 (U11 Boys) | Details |
| Standard | 5 | Holdsworth, J (Jordan) | 2 | 1 | 1 | CT Metro Schools Individual Closed 2025 (U11 Open) | Grant East Annual Primary School Invitational Chess Tournament 2025 (U11 Boys) | Details |