PLAYER PAGE
Colton Viljoen
1160152449Nelson Mandela Bay (ENM)Personal
Main rating
| Rating | 1537.1 |
| K-factor | 32 |
| Floor | 975.5 |
| Highest | 1565.1 (2026-01-01) |
| Min/Max +/- allowed | 99 |
| Rating Change () | |
| Games | 14 |
| Score | 8 |
| We | 7.47 |
| SWe | 0.48 |
| Temp +/- | 15.3 |
| Penalties | 0 |
| Weight perform | 1549.7 |
| Final +/- | +15.3 |
| New Rating () | |
| Rating | 1552.4 |
| K-factor | 32 |
| Floor | 975.5 |
| Highest | 1565.1 (2026-01-01) |
| Min/Max +/- allowed | 98.6 |
Standard rating
| Rating | 1523.1 |
| K-factor | 32 |
| Floor | 1023.1 |
| Highest | 1523.1 (2026-03-01) |
| Min/Max +/- allowed | 104.6 |
| Rating Change () | |
| Games | 14 |
| Score | 8 |
| We | 7.27 |
| SWe | 0.73 |
| Temp +/- | 23.3 |
| Penalties | 0 |
| Weight perform | 1549.7 |
| Final +/- | +26.5 |
| New Rating () | |
| Rating | 1549.7 |
| K-factor | 32 |
| Floor | 1049.7 |
| Highest | 1549.7 (2026-04-01) |
| Min/Max +/- allowed | 100.8 |
Rapid rating
| Rating | 1327.1 |
| K-factor | 36 |
| Floor | 827.1 |
| Highest | 1327.1 (2025-11-01) |
| Min/Max +/- allowed | 138.4 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1327.1 |
| K-factor | 36 |
| Floor | 827.1 |
| Highest | 1327.1 (2025-11-01) |
| Min/Max +/- allowed | 138.4 |
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 | NMBCU Trials 3 2026 (U12) | Standard | 2026-04-18 | 2026-04-18 | Nelson Mandela Bay (ENM) | 5 | 1537.1 | 5 | 3 | 1576.2 | 7.3 | Details |
| 2 | South African Junior Closed Chess Championship 2026 (U10 Open) | Classical | 2026-03-28 | 2026-04-02 | Bojanala Platina (NBR) | 9 | 1537.1 | 9 | 5 | 1556.5 | 8 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 NMBCU Trials 2 (U12) | Standard | 2026-03-06 | 2026-03-07 | Nelson Mandela Bay (ENM) | 6 | 1487.3 | 6 | 5 | 1670.7 | 34.6 | Details |
| 2 | NMBCU Trial 1 2026 (U12) | Standard | 2026-02-20 | 2026-02-21 | Nelson Mandela Bay (ENM) | 5 | 1548.2 | 5 | 3 | 1355.3 | -17.9 | Details |
| 3 | 2025 Mzansi Individual Championships (U10 Open) | Classical | 2025-12-17 | 2025-12-20 | Nelson Mandela Bay (ENM) | 6 | 1516 | 6 | 4.5 | 1627.1 | 15.8 | Details |
| 4 | 2025 Mzansi Inter Provincial Team Championships (U10 Combined) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1516 | 6 | 4 | 1557.3 | 5 | Details |
| 5 | PECC - Rapid 2025 (A) | Rapid | 2025-10-23 | 2025-10-30 | Nelson Mandela Bay (ENM) | 6 | 1452.5 | 3 | 1 | 1160.2 | -7.6 | Details |
| 6 | Fide in the Bay 2025 (U12) | Rapid | 2025-10-04 | 2025-10-04 | Nelson Mandela Bay (ENM) | 7 | 1452.5 | 7 | 7 | 1793.1 | 18.3 | Details |
| 7 | EC Closed 2025 (U8+U10 Boys) | Standard | 2025-09-06 | 2025-09-07 | Nelson Mandela Bay (ENM) | 6 | 1421.3 | 6 | 4 | 1495.6 | 10 | Details |
| 8 | FIDE in the Bay 2025 (U12) | Standard | 2025-08-30 | 2025-08-30 | Nelson Mandela Bay (ENM) | 5 | 1406.9 | 5 | 3 | 1410.2 | 1.2 | Details |
| 9 | Eastern Cape Inter-Regional Individual Chess Championship 2025 (U10 Open) | Standard | 2025-07-11 | 2025-07-12 | Amathole (EAL) | 6 | 1217.9 | 6 | 4 | 1614.7 | 46.1 | Details |
| 10 | Eastern Cape Inter-Regional Team Chess Championship 2025 (U12) | Standard | 2025-07-10 | 2025-07-11 | Amathole (EAL) | 5 | 1217.9 | 4 | 2.5 | 1487.9 | 20.9 | Details |
| 11 | Fide in the Bay 2025 (B) | Standard | 2025-07-05 | 2025-07-05 | Nelson Mandela Bay (ENM) | 5 | 1217.9 | 5 | 2 | 1226.8 | 1.5 | Details |
| 12 | NMBCU Closed 2025 (U10) | Standard | 2025-06-13 | 2025-06-14 | Nelson Mandela Bay (ENM) | 6 | 1230.8 | 6 | 2 | 1170.5 | -7.1 | Details |
| 13 | NMBCU Open 2025 (C) | Standard | 2025-05-23 | 2025-05-24 | Nelson Mandela Bay (ENM) | 6 | 1176.7 | 6 | 3 | 1257.2 | 10.8 | Details |
| 14 | NMBCU Trial 4 2025 (U10) | Standard | 2025-05-09 | 2025-05-10 | Nelson Mandela Bay (ENM) | 6 | 1176.7 | 5 | 2 | 1217.5 | 4.5 | Details |
| 15 | NMB 3rd Trials 2025 (U10) | Standard | 2025-04-11 | 2025-04-12 | Nelson Mandela Bay (ENM) | 6 | 1168.6 | 5 | 2 | 1223.7 | 4.5 | Details |
| 16 | NMB 2nd Trials 2025 (U10) | Standard | 2025-03-07 | 2025-03-08 | Nelson Mandela Bay (ENM) | 6 | 1131.4 | 6 | 3 | 1309.5 | 20.6 | Details |
| 17 | NMBCH Trial 1 2025 (U10) | Standard | 2025-02-14 | 2025-02-15 | Nelson Mandela Bay (ENM) | 6 | 1104 | 5 | 2.5 | 1254.5 | 15.3 | Details |
| 18 | NMBCU Closed 2024 (U10) | Standard | 2024-09-20 | 2024-09-21 | Nelson Mandela Bay (ENM) | 6 | 1143.4 | 6 | 1 | 933.2 | -24.2 | Details |
| 19 | NMBCU Trials 4 2024 (U10) | Standard | 2024-07-12 | 2024-07-13 | Nelson Mandela Bay (ENM) | 6 | 1143.4 | 6 | 2 | 1104.7 | -4.6 | Details |
| 20 | Willow Academy 2024 (C) | Rapid | 2024-06-22 | 2024-06-22 | Nelson Mandela Bay (ENM) | 6 | 1115.4 | 6 | 3.5 | 1327.3 | 14.1 | Details |
| 21 | NMBCU Trial 3 2024 (U10) | Standard | 2024-05-10 | 2024-05-11 | Nelson Mandela Bay (ENM) | 6 | 1125.4 | 6 | 2 | 1085.2 | -5 | Details |
| 22 | NMBCU Trials 2 2024 (U10) | Standard | 2024-04-12 | 2024-04-13 | Nelson Mandela Bay (ENM) | 6 | 1070.3 | 6 | 3.5 | 1306.6 | 27.6 | Details |
| 23 | NMBCU Trials 1 2024 (U10) | Standard | 2024-02-16 | 2024-02-17 | Nelson Mandela Bay (ENM) | 6 | 1081.3 | 6 | 1.5 | 1023.8 | -5.5 | Details |
| 24 | Eastern Cape Provincial Individual Championship 2023 (U8 Boys) | Standard | 2023-10-05 | 2023-10-05 | Nelson Mandela Bay (ENM) | 7 | 1119 | 6 | 2.5 | 1112 | -0.9 | Details |
| 25 | Eastern Cape Chess Team Championship 2023 (U10) | Standard | 2023-10-07 | 2023-10-08 | Sarah Baartman (ESB) | 5 | 1119 | 4 | 0 | 899.4 | -17.7 | Details |
| 26 | NMBCU Closed 2023 (U8) | Standard | 2023-08-11 | 2023-08-12 | Nelson Mandela Bay (ENM) | 5 | 1117 | 5 | 2 | 1121.5 | 1 | Details |
| 27 | NMBCU Trial 4 2023 (U8) | Standard | 2023-07-28 | 2023-07-29 | Nelson Mandela Bay (ENM) | 5 | 1103.7 | 5 | 2.5 | 1180.6 | 6.8 | Details |
| 28 | EP Trials 3 2023 (U8) | Standard | 2023-05-06 | 2023-05-06 | Nelson Mandela Bay (ENM) | 6 | 1146.5 | 5 | 1 | 921.1 | -21.4 | Details |
| 29 | NMB 2nd Trials 2023 (U8) | Standard | 2023-03-25 | 2023-03-25 | Nelson Mandela Bay (ENM) | 6 | 1200 | 6 | 1.5 | 959.6 | -26.7 | Details |
Game statistics ( )
| Games | 5 |
| Wins | 3 |
| Draws | 0 |
| Losses | 2 |
| White | 2 |
| Black | 3 |
| White wins | 1 |
| Black wins | 2 |
| Score | 3 |
| Percent | 60 |
| Dp | 85 |
| AOR | 1491.2 |
| Performance | 1576.2 |
Game statistics ()
| Games | 25 |
| Wins | 15 |
| Draws | 2 |
| Losses | 8 |
| White | 11 |
| Black | 14 |
| White wins | 8 |
| Black wins | 7 |
| Score | 16 |
| Percent | 64 |
| Dp | 119 |
| AOR | 1428.6 |
| Performance | 1547.6 |
Game statistics (History)
| Games | 173 |
| Wins | 80 |
| Draws | 11 |
| Losses | 82 |
| White | 79 |
| Black | 94 |
| White wins | 41 |
| Black wins | 39 |
| Score | 85.5 |
| Percent | 49.4 |
| Dp | -4.9 |
| AOR | 1307.6 |
| Performance | 1302.6 |
Rankings (Main)
| National | |
| Overall | 1499 |
| Gender | 1351 |
| Age group | 97 |
| Gender/Age | 83 |
| Provincial | |
| Overall | 143 |
| Gender | 128 |
| Age group | 9 |
| Gender/Age | 8 |
| Regional | |
| Overall | 51 |
| Gender | 45 |
| Age group | 3 |
| Gender/Age | 3 |
Rankings (Standard)
| National | |
| Overall | 1493 |
| Gender | 1324 |
| Age group | 98 |
| Gender/Age | 82 |
| Provincial | |
| Overall | 151 |
| Gender | 132 |
| Age group | 9 |
| Gender/Age | 7 |
| Regional | |
| Overall | 52 |
| Gender | 46 |
| Age group | 3 |
| Gender/Age | 3 |
Rankings (Rapid)
| National | |
| Overall | 1551 |
| Gender | 1301 |
| Age group | 176 |
| Gender/Age | 143 |
| Provincial | |
| Overall | 148 |
| Gender | 129 |
| Age group | 15 |
| Gender/Age | 14 |
| Regional | |
| Overall | 37 |
| Gender | 34 |
| Age group | 4 |
| Gender/Age | 4 |
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 | 14 |
| Score | 8 |
| Percent | 57.1 |
| Aor | 1502.8 |
| Dp | 60.7 |
| Prat | 1563.6 |
Performance ()
| Games | 25 |
| Score | 16 |
| Percent | 64 |
| Aor | 1428.6 |
| Dp | 119 |
| Prat | 1547.6 |
Performance (12 months)
| Games | 90 |
| Score | 55 |
| Percent | 61.1 |
| Aor | 1375.3 |
| Dp | 94.4 |
| Prat | 1469.8 |
Performance (History)
| Games | 173 |
| Score | 85.5 |
| Percent | 49.4 |
| Aor | 1307.6 |
| Dp | -4.9 |
| Prat | 1302.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Kapp, A (Amelie) | 10 | 4 | 6 | NMB 2nd Trials 2023 (U8) | Fide in the Bay 2025 (U12) | Details |
| Overall | 2 | Mitchell, N (Nicholas) | 10 | 7 | 3 | NMBCU Trial 4 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Overall | 3 | Kritzinger, A (Adrian) | 7 | 3 | 4 | NMB 2nd Trials 2023 (U8) | NMBCU Trials 4 2024 (U10) | Details |
| Overall | 4 | Celliers, M (Morgan) | 6 | 4 | 2 | EP Trials 3 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Overall | 5 | Abrahams, L (Levi) | 6 | 2 | 4 | Willow Academy 2024 (C) | Fide in the Bay 2025 (U12) | Details |
| Standard | 1 | Mitchell, N (Nicholas) | 10 | 7 | 3 | NMBCU Trial 4 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Standard | 2 | Kapp, A (Amelie) | 9 | 3 | 6 | NMB 2nd Trials 2023 (U8) | FIDE in the Bay 2025 (U12) | Details |
| Standard | 3 | Kritzinger, A (Adrian) | 7 | 3 | 4 | NMB 2nd Trials 2023 (U8) | NMBCU Trials 4 2024 (U10) | Details |
| Standard | 4 | Celliers, M (Morgan) | 6 | 4 | 2 | EP Trials 3 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Standard | 5 | Coltman, A (Ariana) | 5 | 1 | 4 | NMB 2nd Trials 2023 (U8) | NMBCU Trials 1 2024 (U10) | Details |
| Rapid | 1 | Abrahams, L (Levi) | 2 | 1 | 1 | Willow Academy 2024 (C) | Fide in the Bay 2025 (U12) | Details |