PLAYER PAGE
Adrihan Viljoen
1140135534Cape Town (WCT)Personal
Main rating
| Rating | 1510.2 |
| K-factor | 32 |
| Floor | 1010.2 |
| Highest | 1510.2 (2026-07-01) |
| Min/Max +/- allowed | 107 |
| Rating Change () | |
| Games | 7 |
| Score | 4 |
| We | 5.17 |
| SWe | -1.17 |
| Temp +/- | -37.3 |
| Penalties | 0 |
| Weight perform | 1461.7 |
| Final +/- | -37.3 |
| New Rating () | |
| Rating | 1472.9 |
| K-factor | 32 |
| Floor | 1010.2 |
| Highest | 1510.2 (2026-07-01) |
| Min/Max +/- allowed | 106.6 |
Standard rating
| Rating | 1510.2 |
| K-factor | 32 |
| Floor | 1010.2 |
| Highest | 1510.2 (2026-07-01) |
| Min/Max +/- allowed | 106.6 |
| Rating Change () | |
| Games | 7 |
| Score | 4 |
| We | 5.29 |
| SWe | -1.29 |
| Temp +/- | -41.1 |
| Penalties | 0 |
| Weight perform | 1461.7 |
| Final +/- | -41.1 |
| New Rating () | |
| Rating | 1469.1 |
| K-factor | 32 |
| Floor | 1010.2 |
| Highest | 1510.2 (2026-07-01) |
| Min/Max +/- allowed | 106.6 |
Rapid rating
| Rating | 1406.9 |
| K-factor | 32 |
| Floor | 906.9 |
| Highest | 1406.9 (2025-11-01) |
| Min/Max +/- allowed | 123.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1267.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1406.9 |
| K-factor | 32 |
| Floor | 906.9 |
| Highest | 1406.9 (2025-11-01) |
| Min/Max +/- allowed | 123.5 |
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 |
| 1 | South African Open Championship 2026 (U13 Boys) | Classical | 2026-07-02 | 2026-07-05 | Cape Town (WCT) | 7 | 1510.2 | 7 | 4 | 1371.6 | -37.3 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | CTCF Open Championship 2026 (U14) | Classical | 2026-06-13 | 2026-06-14 | Cape Town (WCT) | 6 | 1501.5 | 6 | 4 | 1514.6 | 3.3 | Details |
| 2 | 2026 WCSC PS Individual Championship (U13 Boys) | Standard | 2026-05-16 | 2026-05-17 | Overberg (WOS) | 6 | 1444.6 | 6 | 4 | 1638.6 | 34 | Details |
| 3 | Moja Chess Extravaganza 2026 (U12) | Standard | 2026-04-25 | 2026-04-26 | Cape Town (WCT) | 5 | 1444.6 | 5 | 2 | 1494.1 | 6.5 | Details |
| 4 | Cape Winelands Schools - Prestige 2026 (U13 Boys) | Standard | 2026-03-21 | 2026-03-21 | Cape Winelands (WCW) | 5 | 1444.1 | 5 | 3 | 1439.2 | 0.5 | Details |
| 5 | Cape Winelands Schools - Primary Schools Trials 1 2026 (U13 Boys) | Standard | 2026-02-14 | 2026-02-14 | Cape Winelands (WCW) | 5 | 1435.2 | 5 | 4 | 1499.4 | 5.6 | Details |
| 6 | Langeberg Club 2025 (U12) | Rapid | 2025-10-04 | 2025-10-04 | Cape Winelands (WCW) | 6 | 1429.9 | 6 | 4 | 1466.5 | 3.3 | Details |
| 7 | Cape Winelands Top Schools 2025 (U13) | Rapid | 2025-08-23 | 2025-08-23 | Cape Winelands (WCW) | 5 | 1386.2 | 2 | 2 | 1943.9 | 16.5 | Details |
| 8 | Western Cape Women’s Championship 2025 (U12) | Standard | 2025-08-09 | 2025-08-09 | West Coast (WCU) | 5 | 1386.2 | 5 | 3 | 1456.9 | 6.1 | Details |
| 9 | Western Cape Women’s Championship 2025 (Sunday Rapid) | Rapid | 2025-08-10 | 2025-08-10 | West Coast (WCU) | 5 | 1386.2 | 5 | 3 | 1455.3 | 1.5 | Details |
| 10 | Western Cape Schools Individual Championship 2025 (U11 Boys) | Standard | 2025-05-17 | 2025-05-18 | Cape Winelands (WCW) | 6 | 1358 | 6 | 3 | 1414.8 | 6.6 | Details |
| 11 | West Coast And Mykonos Open 2025 (U12) | Standard | 2025-05-02 | 2025-05-04 | West Coast (WCU) | 5 | 1358 | 5 | 3 | 1433.2 | 9.2 | Details |
| 12 | South African Junior Closed Chess Championships 2025 (U12 Open) | Classical | 2025-03-31 | 2025-04-05 | Cape Winelands (WCW) | 9 | 1375.9 | 9 | 3 | 1325.9 | -10 | Details |
| 13 | Cape Town Open Chess Festival 2025 (U12) | Standard | 2025-03-22 | 2025-03-23 | Cape Town (WCT) | 6 | 1378.9 | 5 | 2 | 1224.2 | -15.8 | Details |
| 14 | Cape Winelands Schools Prestige 2025 (U11 Boys) | Standard | 2025-03-08 | 2025-03-08 | Cape Winelands (WCW) | 5 | 1378.9 | 5 | 4 | 1514.3 | 14.1 | Details |
| 15 | Cape Winelands Schools - Trials 1 2025 (U11 Boys) | Standard | 2025-02-22 | 2025-02-22 | Cape Winelands (WCW) | 5 | 1355 | 5 | 4 | 1452.3 | 10.3 | Details |
| 16 | Laerskool Welgemoed Rapid 2025 (U12) | Rapid | 2025-02-15 | 2025-02-15 | Cape Town (WCT) | 6 | 1355 | 6 | 4 | 1341.2 | -1.1 | Details |
| 17 | Marie Delport Memorial 2025 (U12 Boys) | Standard | 2025-01-25 | 2025-01-26 | Cape Winelands (WCW) | 6 | 1335.5 | 6 | 4 | 1427.3 | 10.8 | Details |
| 18 | Mzansi Interprovincial Youth Chess Championships 2024 (U12 Open Candidates) | Classical | 2024-12-16 | 2024-12-19 | Capricorn (LCP) | 7 | 1296.3 | 7 | 4.5 | 1426.1 | 22.2 | Details |
| 19 | Worcester Knock-Out 2024 (U11 Boys) | Rapid | 2024-10-19 | 2024-10-19 | Cape Winelands (WCW) | 6 | 1336.2 | 6 | 5 | 1493.2 | 13.4 | Details |
| 20 | UCT Open Chess Championship 2024 (Intermediate) | Standard | 2024-10-12 | 2024-10-13 | Cape Town (WCT) | 6 | 1336.2 | 5 | 1 | 995.7 | -35.7 | Details |
| 21 | Chess Elevation Series -September 2024 (Level 1) | Standard | 2024-09-20 | 2024-09-21 | Cape Town (WCT) | 5 | 1325.3 | 5 | 2 | 1214 | -10.7 | Details |
| 22 | Akkertjies Invitational 2024 (U13 Boys) | Standard | 2024-09-14 | 2024-09-14 | Cape Winelands (WCW) | 5 | 1325.3 | 5 | 4 | 1441.6 | 10.6 | Details |
| 23 | Western Cape Women’s Championship 2024 (U12) | Standard | 2024-08-09 | 2024-08-09 | West Coast (WCU) | 5 | 1290.4 | 5 | 2 | 1213.3 | -8.5 | Details |
| 24 | De Villiers PS Tournament 2024 (U14) | Standard | 2024-08-17 | 2024-08-17 | Cape Winelands (WCW) | 5 | 1290.4 | 5 | 4 | 1577.5 | 27.2 | Details |
| 25 | Curro Durbanville Chess Rapid Open 2024 (Beginner) | Rapid | 2024-07-13 | 2024-07-13 | Cape Town (WCT) | 6 | 1270 | 6 | 4 | 1391.9 | 11.3 | Details |
| 26 | West Coast & Mykonos Open 2024 (U12) | Standard | 2024-05-18 | 2024-05-18 | West Coast (WCU) | 5 | 1260.4 | 2 | 1 | 1306.2 | 1.8 | Details |
| 27 | Worcester PS League 2024 (U11) | Standard | 2024-04-27 | 2024-04-27 | Cape Winelands (WCW) | 5 | 1260.4 | 4 | 2.5 | 1303.7 | 3.5 | Details |
| 28 | Hermanus Chess Club Open 2024 (Development) | Rapid | 2024-04-20 | 2024-04-20 | Overberg (WOS) | 7 | 1271.1 | 7 | 4 | 1198.4 | -5.9 | Details |
| 29 | Cape Winelands Schools - Prestige 2024 (U11 Boys) | Standard | 2024-03-02 | 2024-03-02 | Cape Winelands (WCW) | 5 | 1259.7 | 5 | 2.5 | 1318.5 | 6.3 | Details |
| 30 | Cape of Good Hope Open Chess Tournament 2024 (U10) | Rapid | 2024-02-17 | 2024-02-17 | Cape Town (WCT) | 6 | 1240 | 6 | 3 | 1176 | -5.4 | Details |
| 31 | Cape Winelands Schools - PS Trials 1 2024 (U11 Boys) | Rapid | 2024-02-10 | 2024-02-10 | Cape Winelands (WCW) | 6 | 1240 | 6 | 4 | 1415.2 | 16.1 | Details |
| 32 | Cape Winelands - Marie Delport Memorial 2024 (U12) | Rapid | 2024-01-27 | 2024-01-27 | Cape Winelands (WCW) | 6 | 1255.2 | 6 | 2.5 | 1128.2 | -8.5 | Details |
| 33 | Western Cape Schools 2022 (U9 Boys) | Standard | 2022-05-28 | 2022-05-29 | Cape Winelands (WCW) | 6 | 1300.9 | 6 | 2 | 1082.9 | -26.1 | Details |
| 34 | WN Akkertjies 2022 (Juniors) | Standard | 2022-04-27 | 2022-04-27 | Cape Winelands (WCW) | 6 | 1257.9 | 6 | 5 | 1462 | 24.1 | Details |
| 35 | Cape Winelands Schools 2022 (U9 Boys) | Standard | 2022-03-12 | 2022-03-12 | Cape Winelands (WCW) | 5 | 1215.2 | 5 | 4 | 1452.4 | 23.9 | Details |
| 36 | Worcester Schools Trials 2022 (U9 Boys+Girls) | Rapid | 2022-02-19 | 2022-02-19 | Cape Winelands (WCW) | 5 | 1189 | 4 | 3 | 1421.4 | 13.2 | Details |
| 37 | Cape Winelands Schools Trials 2021 (U9 Boys) | Rapid | 2021-10-16 | 2021-10-16 | Cape Winelands (WCW) | 5 | 1200 | 5 | 2 | 1128.2 | -5.7 | Details |
Game statistics ( )
| Games | 7 |
| Wins | 4 |
| Draws | 0 |
| Losses | 3 |
| White | 4 |
| Black | 3 |
| White wins | 2 |
| Black wins | 2 |
| Score | 4 |
| Percent | 57.1 |
| Dp | 60.7 |
| AOR | 1310.9 |
| Performance | 1371.6 |
Game statistics ()
| Games | 34 |
| Wins | 21 |
| Draws | 0 |
| Losses | 13 |
| White | 19 |
| Black | 15 |
| White wins | 11 |
| Black wins | 10 |
| Score | 21 |
| Percent | 61.8 |
| Dp | 100 |
| AOR | 1390.7 |
| Performance | 1490.7 |
Game statistics (History)
| Games | 205 |
| Wins | 117 |
| Draws | 10 |
| Losses | 78 |
| White | 105 |
| Black | 100 |
| White wins | 63 |
| Black wins | 54 |
| Score | 122 |
| Percent | 59.5 |
| Dp | 80.9 |
| AOR | 1292.7 |
| Performance | 1373.5 |
Rankings (Main)
| National | |
| Overall | 1893 |
| Gender | 1670 |
| Age group | 182 |
| Gender/Age | 138 |
| Provincial | |
| Overall | 572 |
| Gender | 494 |
| Age group | 59 |
| Gender/Age | 41 |
| Regional | |
| Overall | 338 |
| Gender | 300 |
| Age group | 28 |
| Gender/Age | 20 |
Rankings (Standard)
| National | |
| Overall | 1724 |
| Gender | 1507 |
| Age group | 167 |
| Gender/Age | 124 |
| Provincial | |
| Overall | 507 |
| Gender | 426 |
| Age group | 55 |
| Gender/Age | 37 |
| Regional | |
| Overall | 305 |
| Gender | 269 |
| Age group | 27 |
| Gender/Age | 20 |
Rankings (Rapid)
| National | |
| Overall | 868 |
| Gender | 761 |
| Age group | 135 |
| Gender/Age | 107 |
| Provincial | |
| Overall | 401 |
| Gender | 345 |
| Age group | 61 |
| Gender/Age | 49 |
| Regional | |
| Overall | 191 |
| Gender | 176 |
| Age group | 26 |
| Gender/Age | 23 |
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 | 7 |
| Score | 4 |
| Percent | 57.1 |
| Aor | 1310.9 |
| Dp | 60.7 |
| Prat | 1371.6 |
Performance ()
| Games | 34 |
| Score | 21 |
| Percent | 61.8 |
| Aor | 1390.7 |
| Dp | 100 |
| Prat | 1490.7 |
Performance (12 months)
| Games | 52 |
| Score | 33 |
| Percent | 63.5 |
| Aor | 1384.3 |
| Dp | 114.4 |
| Prat | 1498.7 |
Performance (History)
| Games | 205 |
| Score | 122 |
| Percent | 59.5 |
| Aor | 1292.7 |
| Dp | 80.9 |
| Prat | 1373.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Van Tonder, L (Luhann) | 4 | 1 | 3 | Worcester Schools Trials 2022 (U9 Boys+Girls) | Cape Winelands Schools - Prestige 2024 (U11 Boys) | Details |
| Overall | 2 | Milhomem, D (Daniel) | 3 | 0 | 3 | Cape Winelands Schools Trials 2021 (U9 Boys) | Cape Winelands Schools 2022 (U9 Boys) | Details |
| Overall | 3 | Van Wyk, M (Micaile) | 2 | 2 | 0 | Cape Winelands Schools - PS Trials 1 2024 (U11 Boys) | Langeberg Club 2025 (U12) | Details |
| Overall | 4 | Fortuin, A (Ashton) | 2 | 1 | 1 | Cape Winelands - Marie Delport Memorial 2024 (U12) | Cape Winelands Schools - Prestige 2024 (U11 Boys) | Details |
| Overall | 5 | Goncalves Alho, M (Miguel) | 2 | 1 | 1 | Cape Winelands Schools - Prestige 2024 (U11 Boys) | Cape Winelands Schools - Prestige 2026 (U13 Boys) | Details |
| Standard | 1 | Van Tonder, L (Luhann) | 3 | 0 | 3 | Cape Winelands Schools 2022 (U9 Boys) | Cape Winelands Schools - Prestige 2024 (U11 Boys) | Details |
| Standard | 2 | Kruger, M (Migael) | 2 | 2 | 0 | Cape Town Open Chess Festival 2025 (U12) | 2026 WCSC PS Individual Championship (U13 Boys) | Details |
| Standard | 3 | Cilliers, D (Dene) | 2 | 1 | 1 | West Coast & Mykonos Open 2024 (U12) | Western Cape Women’s Championship 2024 (U12) | Details |
| Standard | 4 | Robertson, M (Marvin) | 2 | 2 | 0 | Cape Winelands Schools - Prestige 2024 (U11 Boys) | Marie Delport Memorial 2025 (U12 Boys) | Details |
| Standard | 5 | Jagers, Z (Zayd) | 2 | 1 | 1 | Cape Winelands Schools - Primary Schools Trials 1 2026 (U13 Boys) | Cape Winelands Schools - Prestige 2026 (U13 Boys) | Details |
| Rapid | 1 | Van Wyk, M (Micaile) | 2 | 2 | 0 | Cape Winelands Schools - PS Trials 1 2024 (U11 Boys) | Langeberg Club 2025 (U12) | Details |
| Rapid | 2 | Krynauw, E (Eben) | 2 | 1 | 1 | Cape Winelands - Marie Delport Memorial 2024 (U12) | Worcester Knock-Out 2024 (U11 Boys) | Details |
| Rapid | 3 | Milhomem, D (Daniel) | 2 | 0 | 2 | Cape Winelands Schools Trials 2021 (U9 Boys) | Worcester Schools Trials 2022 (U9 Boys+Girls) | Details |
| Rapid | 4 | Lambrechts, M (Madison) | 2 | 0 | 2 | Cape Winelands - Marie Delport Memorial 2024 (U12) | Curro Durbanville Chess Rapid Open 2024 (Beginner) | Details |