PLAYER PAGE
Jayden Johan Viljoen
1160159892Tshwane (GTP)Personal
Main rating
| Rating | 1598.5 |
| K-factor | 28 |
| Floor | 1135.9 |
| Highest | 1635.9 (2026-01-01) |
| Min/Max +/- allowed | 89 |
| Rating Change () | |
| Games | 23 |
| Score | 12.5 |
| We | 15.98 |
| SWe | -1.58 |
| Temp +/- | -44.2 |
| Penalties | 0 |
| Weight perform | 1473.1 |
| Final +/- | -44.2 |
| New Rating () | |
| Rating | 1554.3 |
| K-factor | 28 |
| Floor | 1135.9 |
| Highest | 1635.9 (2026-01-01) |
| Min/Max +/- allowed | 89.1 |
Standard rating
| Rating | 1587.2 |
| K-factor | 28 |
| Floor | 1129.5 |
| Highest | 1629.5 (2026-01-01) |
| Min/Max +/- allowed | 89.9 |
| Rating Change () | |
| Games | 14 |
| Score | 8.5 |
| We | 9.51 |
| SWe | -1.01 |
| Temp +/- | -28.3 |
| Penalties | 0 |
| Weight perform | 1528.4 |
| Final +/- | -28.3 |
| New Rating () | |
| Rating | 1558.9 |
| K-factor | 28 |
| Floor | 1129.5 |
| Highest | 1629.5 (2026-01-01) |
| Min/Max +/- allowed | 89.9 |
Rapid rating
| Rating | 1209.5 |
| K-factor | 36 |
| Floor | 709.5 |
| Highest | 1209.5 (2025-05-05) |
| Min/Max +/- allowed | 163.6 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1209.5 |
| K-factor | 36 |
| Floor | 709.5 |
| Highest | 1209.5 (2025-05-05) |
| Min/Max +/- allowed | 163.6 |
Blitz rating
| Rating | 1211.3 |
| K-factor | 36 |
| Floor | 711.3 |
| Highest | 1211.3 (2025-05-05) |
| Min/Max +/- allowed | 163.2 |
| Rating Change () | |
| Games | 9 |
| Score | 4 |
| We | 4.24 |
| SWe | -0.24 |
| Temp +/- | -8.8 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | -8.8 |
| New Rating () | |
| Rating | 1202.5 |
| K-factor | 36 |
| Floor | 711.3 |
| Highest | 1211.3 (2025-05-05) |
| Min/Max +/- allowed | 163.2 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 D3 Tshwane North School Cluster 4&5 Individuals (U11 Mixed) | Standard | 2026-04-11 | 2026-04-11 | Tshwane (GTP) | 5 | 1598.5 | 5 | 4.5 | 1598.2 | -0.3 | Details |
| 2 | South African Junior Closed Chess Championship 2026 (U10 Open) | Classical | 2026-03-28 | 2026-04-02 | Bojanala Platina (NBR) | 9 | 1598.5 | 9 | 4 | 1493 | -32.3 | Details |
| 3 | South African Junior Closed Chess Championship 2026 (Blitz) | Blitz | 2026-03-31 | 2026-03-31 | Bojanala Platina (NBR) | 9 | 1598.5 | 9 | 4 | 1373.7 | -11.7 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Chris Greyling Open Tournament (U12) | Standard | 2026-03-14 | 2026-03-14 | Tshwane (GTP) | 5 | 1625.6 | 5 | 3 | 1521.1 | -12.3 | Details |
| 2 | 2026 AHS Chess Tournament (U12) | Standard | 2026-02-28 | 2026-02-28 | Tshwane (GTP) | 5 | 1625.6 | 5 | 3 | 1522.3 | -14.8 | Details |
| 3 | 2026 Tshwane Chess Registration Tournament (U12-2) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1662 | 5 | 3.5 | 1545.1 | -9.5 | Details |
| 4 | 2025 Mzansi Inter Provincial Team Championships (U10 Combined) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1532.6 | 6 | 6 | 1860.9 | 38.5 | Details |
| 5 | Gauteng Inter-Region at Emerald Resort 2025 (U10 Championship) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1532.6 | 5 | 5 | 1850.8 | 34.6 | Details |
| 6 | 2025 Gauteng Top Schools Teams (U9) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1557.4 | 5 | 4 | 1590.5 | 4.1 | Details |
| 7 | Bojanala's Battle Of Mount Cambridge 2025 (Center Pawns) | Standard | 2025-10-11 | 2025-10-11 | Bojanala Platina (NBR) | 5 | 1557.4 | 5 | 3 | 1360.1 | -19.6 | Details |
| 8 | 2025 Tshwane North District CLOSED Team Championships (D3) (U9) | Standard | 2025-08-16 | 2025-08-16 | Tshwane (GTP) | 5 | 1580.9 | 5 | 5 | 1674.4 | 8.8 | Details |
| 9 | 2025 Etienne Lewis Closed Chess Tournament (U10) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1580.9 | 7 | 4 | 1421.6 | -23.5 | Details |
| 10 | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U9) | Standard | 2025-07-26 | 2025-07-26 | Tshwane (GTP) | 5 | 1501.5 | 5 | 4.5 | 1561.9 | 5.5 | Details |
| 11 | 2025 Wynie Robbertse Chess Tournament (U10) | Standard | 2025-07-19 | 2025-07-19 | Tshwane (GTP) | 5 | 1501.5 | 5 | 4 | 1645.9 | 13.4 | Details |
| 12 | 2025 Elise Steenkamp Open Chess Tournament (Knight) | Standard | 2025-06-14 | 2025-06-15 | Tshwane (GTP) | 5 | 1476.2 | 5 | 4 | 1625.5 | 15.8 | Details |
| 13 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U9 Open) | Standard | 2025-05-24 | 2025-05-24 | Tshwane (GTP) | 5 | 1427.4 | 5 | 4 | 1509 | 7.5 | Details |
| 14 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | Standard | 2025-05-10 | 2025-05-10 | Tshwane (GTP) | 5 | 1427.4 | 5 | 5 | 1668.7 | 23.1 | Details |
| 15 | FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Blitz) | Blitz | 2025-04-16 | 2025-04-17 | Geece (GRE) | 11 | 1424.9 | 10 | 2 | 1262.5 | -9.6 | Details |
| 16 | FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid) | Rapid | 2025-04-13 | 2025-04-15 | Greece (GRE) | 11 | 1424.9 | 10 | 3 | 1224.6 | -19.8 | Details |
| 17 | Lubowski Open 2025 (C) | Standard | 2025-03-21 | 2025-03-22 | Tshwane (GTP) | 5 | 1467.8 | 5 | 1 | 1161.3 | -34.5 | Details |
| 18 | 2025 Blou Bul Open Chess Tournament (B) | Standard | 2025-02-08 | 2025-02-08 | Tshwane (GTP) | 5 | 1528.2 | 5 | 0 | 1134.4 | -37.8 | Details |
| 19 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1518.5 | 5 | 4 | 1571.7 | 6.1 | Details |
| 20 | Gauteng Inter-Region at UJ 2024 (U10 Open) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1546.2 | 5 | 2 | 1398.1 | -17.3 | Details |
| 21 | 2024 Etienne Lewis (U10) | Standard | 2024-08-30 | 2024-09-01 | Tshwane (GTP) | 7 | 1591.9 | 6 | 3.5 | 1372.1 | -28.5 | Details |
| 22 | 2024 Tshwane North School District Cluster 4 & 5 Team League (U9) | Standard | 2024-07-20 | 2024-07-20 | Tshwane (GTP) | 5 | 1359 | 5 | 5 | 1644 | 27.2 | Details |
| 23 | Menlopark Open Chess Tournament 2024 (U10) | Standard | 2024-07-13 | 2024-07-13 | Tshwane (GTP) | 5 | 1359 | 5 | 5 | 1769.7 | 39.5 | Details |
| 24 | 2024 Tshwane North School District CLOSED Individual Champioships (U9) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1235.7 | 5 | 4 | 1488.1 | 24.1 | Details |
| 25 | District 3 Cluster 4 and 5 Individuals 2024 (U9) | Standard | 2024-05-04 | 2024-05-04 | Tshwane (GTP) | 5 | 1235.7 | 5 | 5 | 1657.1 | 42 | Details |
| 26 | 2024 Milos Ristic Open Chess Tournament (U10) | Standard | 2024-04-27 | 2024-04-27 | Tshwane (GTP) | 5 | 1256.6 | 5 | 2 | 1145.7 | -11.6 | Details |
| 27 | 2024 Lubowski Open Chess Tournament (D2) | Standard | 2024-03-23 | 2024-03-24 | Tshwane (GTP) | 5 | 1369.2 | 5 | 1.5 | 980 | -42 | Details |
| 28 | 2024 Chris Greyling Open Chess Tournament (D3) | Standard | 2024-03-16 | 2024-03-16 | Tshwane (GTP) | 5 | 1369.2 | 5 | 1.5 | 1154 | -20.4 | Details |
| 29 | 2024 Tshwane Chess AHS Open Chess Tournament (E) | Standard | 2024-02-24 | 2024-02-24 | Tshwane (GTP) | 5 | 1241.8 | 5 | 3.5 | 1392.4 | 15.4 | Details |
| 30 | 2024 Constantiapark Open (E) | Standard | 2024-02-17 | 2024-02-17 | Tshwane (GTP) | 5 | 1241.8 | 5 | 4 | 1482.5 | 24.2 | Details |
| 31 | 2024 Piet Robbertse Open Chess Tournament (E) | Standard | 2024-02-03 | 2024-02-03 | Tshwane (GTP) | 5 | 1241.8 | 5 | 3 | 1228.8 | -0.6 | Details |
| 32 | 2024 Blou Bul Open Chess Tournament (E) | Standard | 2024-02-10 | 2024-02-10 | Tshwane (GTP) | 5 | 1241.8 | 5 | 3.5 | 1351.7 | 10.1 | Details |
| 33 | 2024 Tshwane Chess OPEN Registration Tournament (E) | Standard | 2024-01-27 | 2024-01-27 | Tshwane (GTP) | 5 | 1241.2 | 5 | 3 | 1239.6 | 0.3 | Details |
| 34 | 2023 Gauteng Top Schools (U9 Mixed) | Standard | 2023-08-18 | 2023-08-18 | West Rand (GWR) | 5 | 1200 | 4 | 2 | 1227.1 | 2.2 | Details |
| 35 | 2023 Tshwane North School District CLOSED League Championships (D3) | Standard | 2023-08-12 | 2023-08-12 | Tshwane (GTP) | 5 | 1200 | 5 | 3.5 | 1419.6 | 20.7 | Details |
Game statistics ( )
| Games | 5 |
| Wins | 4 |
| Draws | 1 |
| Losses | 0 |
| White | 3 |
| Black | 2 |
| White wins | 2 |
| Black wins | 2 |
| Score | 4.5 |
| Percent | 90 |
| Dp | 340 |
| AOR | 1258.2 |
| Performance | 1598.2 |
Game statistics ()
| Games | 38 |
| Wins | 20 |
| Draws | 4 |
| Losses | 14 |
| White | 20 |
| Black | 18 |
| White wins | 11 |
| Black wins | 9 |
| Score | 22 |
| Percent | 57.9 |
| Dp | 67.1 |
| AOR | 1425.9 |
| Performance | 1493 |
Game statistics (History)
| Games | 211 |
| Wins | 125 |
| Draws | 15 |
| Losses | 71 |
| White | 109 |
| Black | 102 |
| White wins | 65 |
| Black wins | 60 |
| Score | 132.5 |
| Percent | 62.8 |
| Dp | 108.8 |
| AOR | 1333.8 |
| Performance | 1442.6 |
Rankings (Main)
| National | |
| Overall | 1010 |
| Gender | 925 |
| Age group | 47 |
| Gender/Age | 41 |
| Provincial | |
| Overall | 359 |
| Gender | 326 |
| Age group | 23 |
| Gender/Age | 18 |
| Regional | |
| Overall | 140 |
| Gender | 128 |
| Age group | 7 |
| Gender/Age | 5 |
Rankings (Standard)
| National | |
| Overall | 1011 |
| Gender | 918 |
| Age group | 57 |
| Gender/Age | 48 |
| Provincial | |
| Overall | 369 |
| Gender | 334 |
| Age group | 25 |
| Gender/Age | 20 |
| Regional | |
| Overall | 147 |
| Gender | 134 |
| Age group | 7 |
| Gender/Age | 5 |
Rankings (Rapid)
| National | |
| Overall | 4001 |
| Gender | 3148 |
| Age group | 588 |
| Gender/Age | 442 |
| Provincial | |
| Overall | 762 |
| Gender | 602 |
| Age group | 98 |
| Gender/Age | 77 |
| Regional | |
| Overall | 56 |
| Gender | 47 |
| Age group | 6 |
| Gender/Age | 3 |
Rankings (Blitz)
| National | |
| Overall | 432 |
| Gender | 396 |
| Age group | 17 |
| Gender/Age | 14 |
| Provincial | |
| Overall | 149 |
| Gender | 132 |
| Age group | 6 |
| Gender/Age | 3 |
| Regional | |
| Overall | 39 |
| Gender | 32 |
| Age group | 3 |
| Gender/Age | 1 |
Performance ( )
| Games | 14 |
| Score | 8.5 |
| Percent | 60.7 |
| Aor | 1439.5 |
| Dp | 91.1 |
| Prat | 1530.5 |
Performance ()
| Games | 38 |
| Score | 22 |
| Percent | 57.9 |
| Aor | 1425.9 |
| Dp | 67.1 |
| Prat | 1493 |
Performance (12 months)
| Games | 96 |
| Score | 70.5 |
| Percent | 73.4 |
| Aor | 1366.2 |
| Dp | 199.2 |
| Prat | 1565.5 |
Performance (History)
| Games | 211 |
| Score | 132.5 |
| Percent | 62.8 |
| Aor | 1333.8 |
| Dp | 108.8 |
| Prat | 1442.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Henning, R (Rudolph) | 4 | 3 | 1 | 2023 Tshwane North School District CLOSED League Championships (D3) | 2024 Tshwane North School District Cluster 4 & 5 Team League (U9) | Details |
| Overall | 2 | Barkhuizen, RJ (Reuben Joshua) | 3 | 3 | 0 | 2024 Blou Bul Open Chess Tournament (E) | 2025 Etienne Lewis Closed Chess Tournament (U10) | Details |
| Overall | 3 | Li, J (Jiming) | 3 | 1 | 2 | 2024 Piet Robbertse Open Chess Tournament (E) | 2026 AHS Chess Tournament (U12) | Details |
| Overall | 4 | Rocher, G (Gideon) | 3 | 1 | 2 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2026 Chris Greyling Open Tournament (U12) | Details |
| Overall | 5 | Du Plessis, R (Reghardt) | 3 | 2 | 1 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | 2025 Tshwane North District CLOSED Team Championships (D3) (U9) | Details |
| Standard | 1 | Henning, R (Rudolph) | 4 | 3 | 1 | 2023 Tshwane North School District CLOSED League Championships (D3) | 2024 Tshwane North School District Cluster 4 & 5 Team League (U9) | Details |
| Standard | 2 | Westermann, Z (Zelri) | 3 | 0 | 3 | 2024 Blou Bul Open Chess Tournament (E) | 2025 Etienne Lewis Closed Chess Tournament (U10) | Details |
| Standard | 3 | Li, J (Jiming) | 3 | 1 | 2 | 2024 Piet Robbertse Open Chess Tournament (E) | 2026 AHS Chess Tournament (U12) | Details |
| Standard | 4 | Rocher, G (Gideon) | 3 | 1 | 2 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2026 Chris Greyling Open Tournament (U12) | Details |
| Standard | 5 | Du Plessis, R (Reghardt) | 3 | 2 | 1 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | 2025 Tshwane North District CLOSED Team Championships (D3) (U9) | Details |