PLAYER PAGE
Colton Viljoen
1160152449Nelson Mandela Bay (ENM)Personal
Main rating
| Rating | 1587.5 |
| K-factor | 28 |
| Floor | 1107.2 |
| Highest | 1607.2 (2026-06-01) |
| Min/Max +/- allowed | 93 |
| Rating Change () | |
| Games | 16 |
| Score | 11.5 |
| We | 13.23 |
| SWe | -1.64 |
| Temp +/- | -46 |
| Penalties | 0 |
| Weight perform | 1463 |
| Final +/- | -46 |
| New Rating () | |
| Rating | 1541.5 |
| K-factor | 28 |
| Floor | 1107.2 |
| Highest | 1607.2 (2026-06-01) |
| Min/Max +/- allowed | 92.8 |
Standard rating
| Rating | 1589.7 |
| K-factor | 28 |
| Floor | 1107.2 |
| Highest | 1607.2 (2026-06-01) |
| Min/Max +/- allowed | 92.8 |
| Rating Change () | |
| Games | 6 |
| Score | 2.5 |
| We | 4.39 |
| SWe | -1.89 |
| Temp +/- | -52.9 |
| Penalties | 0 |
| Weight perform | 1459.7 |
| Final +/- | -52.9 |
| New Rating () | |
| Rating | 1536.8 |
| K-factor | 28 |
| Floor | 1107.2 |
| Highest | 1607.2 (2026-06-01) |
| Min/Max +/- allowed | 92.8 |
Rapid rating
| Rating | 1344 |
| K-factor | 36 |
| Floor | 844 |
| Highest | 1344 (2026-08-01) |
| Min/Max +/- allowed | 135.1 |
| Rating Change () | |
| Games | 10 |
| Score | 9 |
| We | 6.91 |
| SWe | 1.92 |
| Temp +/- | 69.2 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | +69.2 |
| New Rating () | |
| Rating | 1413.1 |
| K-factor | 32 |
| Floor | 913.1 |
| Highest | 1413.1 (2026-10-01) |
| Min/Max +/- allowed | 122.4 |
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 | YCA TDP Team Event 2026 (Senior) | Rapid | 2026-08-29 | 2026-08-29 | Nelson Mandela Bay (ENM) | 9 | 1587.5 | 5 | 4 | 1325.4 | -8.2 | Details |
| 2 | Eastern Cape Closed Championship 2026 (U12 Open) | Standard | 2026-09-25 | 2026-09-26 | Sarah Baartman (ESB) | 6 | 1587.5 | 6 | 2.5 | 1317.3 | -44.5 | Details |
| 3 | Eastern Cape Chess Festival 2026 (Inter-Regionals U12) | Rapid | 2026-09-25 | 2026-09-25 | Sarah Baartman (ESB) | 5 | 1587.5 | 5 | 5 | 1703.1 | 7.3 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | NMB Closed 2026 (U12) | Standard | 2026-08-15 | 2026-08-15 | Nelson Mandela Bay (ENM) | 5 | 1587.5 | 5 | 2.5 | 1486.6 | -15.1 | Details |
| 2 | Checkmate in Gqeberha 2026 (U12) | Rapid | 2026-07-11 | 2026-07-11 | Nelson Mandela Bay (ENM) | 6 | 1607.2 | 6 | 4 | 1561.7 | -4.6 | Details |
| 3 | Spartans Bishops 2026 (Bishops) | Standard | 2026-05-01 | 2026-05-01 | Sarah Baartman (ESB) | 5 | 1527.2 | 4 | 2.5 | 1543.2 | 1.3 | Details |
| 4 | Fountains Mall Open 2026 (C) | Standard | 2026-05-16 | 2026-05-16 | Sarah Baartman (ESB) | 6 | 1527.2 | 6 | 6 | 1844.3 | 60.4 | Details |
| 5 | 2026 NMBCU Trials 4 (U12) | Standard | 2026-04-24 | 2026-04-25 | Nelson Mandela Bay (ENM) | 6 | 1537.1 | 6 | 3 | 1401.4 | -25.2 | Details |
| 6 | 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 |
| 7 | 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 |
| 8 | 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 |
| 9 | 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 |
| 10 | 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 |
| 11 | 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 |
| 12 | 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 |
| 13 | 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 |
| 14 | 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 |
| 15 | 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 |
| 16 | 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 |
| 17 | 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 |
| 18 | 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 |
| 19 | 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 |
| 20 | 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 |
| 21 | 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 |
| 22 | 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 |
| 23 | 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 |
| 24 | 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 |
| 25 | 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 |
| 26 | 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 |
| 27 | 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 |
| 28 | 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 |
| 29 | 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 |
| 30 | 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 |
| 31 | 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 |
| 32 | 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 |
| 33 | NMBCU Closed 2023 (U8) | Standard | 2023-08-11 | 2023-08-12 | Nelson Mandela Bay (ENM) | 5 | 1117 | 5 | 2 | 1121.5 | 1 | Details |
| 34 | 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 |
| 35 | 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 |
| 36 | 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 | 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 | 68 |
| Wins | 42 |
| Draws | 7 |
| Losses | 19 |
| White | 31 |
| Black | 37 |
| White wins | 23 |
| Black wins | 19 |
| Score | 45.5 |
| Percent | 66.9 |
| Dp | 143.8 |
| AOR | 1388.4 |
| Performance | 1532.2 |
Game statistics (History)
| Games | 216 |
| Wins | 107 |
| Draws | 16 |
| Losses | 93 |
| White | 99 |
| Black | 117 |
| White wins | 56 |
| Black wins | 51 |
| Score | 115 |
| Percent | 53.2 |
| Dp | 27.5 |
| AOR | 1319 |
| Performance | 1346.5 |
Rankings (Main)
| National | |
| Overall | 1178 |
| Gender | 1070 |
| Age group | 81 |
| Gender/Age | 69 |
| Provincial | |
| Overall | 123 |
| Gender | 114 |
| Age group | 8 |
| Gender/Age | 7 |
| Regional | |
| Overall | 55 |
| Gender | 51 |
| Age group | 5 |
| Gender/Age | 5 |
Rankings (Standard)
| National | |
| Overall | 1056 |
| Gender | 956 |
| Age group | 75 |
| Gender/Age | 63 |
| Provincial | |
| Overall | 105 |
| Gender | 99 |
| Age group | 6 |
| Gender/Age | 6 |
| Regional | |
| Overall | 47 |
| Gender | 43 |
| Age group | 5 |
| Gender/Age | 5 |
Rankings (Rapid)
| National | |
| Overall | 1499 |
| Gender | 1267 |
| Age group | 197 |
| Gender/Age | 159 |
| Provincial | |
| Overall | 132 |
| Gender | 113 |
| Age group | 14 |
| Gender/Age | 12 |
| Regional | |
| Overall | 38 |
| Gender | 36 |
| Age group | 5 |
| Gender/Age | 5 |
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 | 68 |
| Score | 45.5 |
| Percent | 66.9 |
| Aor | 1388.4 |
| Dp | 143.8 |
| Prat | 1532.2 |
Performance (12 months)
| Games | 83 |
| Score | 55 |
| Percent | 66.3 |
| Aor | 1389.1 |
| Dp | 138.3 |
| Prat | 1527.4 |
Performance (History)
| Games | 216 |
| Score | 115 |
| Percent | 53.2 |
| Aor | 1319 |
| Dp | 27.5 |
| Prat | 1346.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Kapp, A (Amelie) | 11 | 4 | 7 | NMB 2nd Trials 2023 (U8) | NMB Closed 2026 (U12) | Details |
| Overall | 2 | Mitchell, N (Nicholas) | 10 | 7 | 3 | NMBCU Trial 4 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Overall | 3 | Armstrong, K (Kristin) | 7 | 5 | 2 | NMBCU Trials 1 2024 (U10) | NMB Closed 2026 (U12) | Details |
| Overall | 4 | John, Z (Zayden) | 7 | 2 | 5 | NMBCH Trial 1 2025 (U10) | Checkmate in Gqeberha 2026 (U12) | Details |
| Overall | 5 | Kritzinger, A (Adrian) | 7 | 3 | 4 | NMB 2nd Trials 2023 (U8) | NMBCU Trials 4 2024 (U10) | Details |
| Standard | 1 | Kapp, A (Amelie) | 10 | 3 | 7 | NMB 2nd Trials 2023 (U8) | NMB Closed 2026 (U12) | Details |
| Standard | 2 | Mitchell, N (Nicholas) | 10 | 7 | 3 | NMBCU Trial 4 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Standard | 3 | Kritzinger, A (Adrian) | 7 | 3 | 4 | NMB 2nd Trials 2023 (U8) | NMBCU Trials 4 2024 (U10) | Details |
| Standard | 4 | Armstrong, K (Kristin) | 7 | 5 | 2 | NMBCU Trials 1 2024 (U10) | NMB Closed 2026 (U12) | Details |
| Standard | 5 | Celliers, M (Morgan) | 6 | 4 | 2 | EP Trials 3 2023 (U8) | NMBCU Closed 2025 (U10) | Details |
| Rapid | 1 | Hugo, K (Kian) | 2 | 0 | 2 | Willow Academy 2024 (C) | Checkmate in Gqeberha 2026 (U12) | Details |
| Rapid | 2 | Abrahams, L (Levi) | 2 | 1 | 1 | Willow Academy 2024 (C) | Fide in the Bay 2025 (U12) | Details |
| Rapid | 3 | John, Z (Zayden) | 2 | 0 | 2 | Fide in the Bay 2025 (U12) | Checkmate in Gqeberha 2026 (U12) | Details |