PLAYER PAGE
Ammen Mohammed De Villiers
1010115854Cape Town (WCT)Personal
Main rating
| Rating | 1573.4 |
| K-factor | 32 |
| Floor | 1073.4 |
| Highest | 1573.4 (2026-10-01) |
| Min/Max +/- allowed | 97 |
| Rating Change () | |
| Games | 9 |
| Score | 2.5 |
| We | 2.74 |
| SWe | -0.24 |
| Temp +/- | -7.6 |
| Penalties | 0 |
| Weight perform | 1516.7 |
| Final +/- | -7.6 |
| New Rating () | |
| Rating | 1565.8 |
| K-factor | 32 |
| Floor | 1073.4 |
| Highest | 1573.4 (2026-10-01) |
| Min/Max +/- allowed | 97.4 |
Standard rating
| Rating | 1508.8 |
| K-factor | 32 |
| Floor | 1061.8 |
| Highest | 1561.8 (2024-11-01) |
| Min/Max +/- allowed | 99 |
| Rating Change () | |
| Games | 9 |
| Score | 2.5 |
| We | 2.05 |
| SWe | 0.45 |
| Temp +/- | 14.3 |
| Penalties | 0 |
| Weight perform | 1340.9 |
| Final +/- | +14.3 |
| New Rating () | |
| Rating | 1523 |
| K-factor | 32 |
| Floor | 1061.8 |
| Highest | 1561.8 (2024-11-01) |
| Min/Max +/- allowed | 99 |
Rapid rating
| Rating | 1544.6 |
| K-factor | 32 |
| Floor | 1044.6 |
| Highest | 1544.6 (2026-10-01) |
| Min/Max +/- allowed | 101.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1532.4 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1544.6 |
| K-factor | 32 |
| Floor | 1044.6 |
| Highest | 1544.6 (2026-10-01) |
| Min/Max +/- allowed | 101.5 |
Blitz rating
| Rating | 1546.7 |
| K-factor | 32 |
| Floor | 1046.7 |
| Highest | 1546.7 (2026-08-01) |
| Min/Max +/- allowed | 101.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1506.5 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1546.7 |
| K-factor | 32 |
| Floor | 1046.7 |
| Highest | 1546.7 (2026-08-01) |
| Min/Max +/- allowed | 101.2 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | CTCF League 2026 (A) | Classical | 2026-08-01 | 2026-09-20 | Cape Town (WCT) | 11 | 1573.4 | 9 | 2.5 | 1564.7 | -7.6 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | UWC Chess Club Open Rapid 2nd Edition 2026 (A) | Rapid | 2026-08-29 | 2026-08-29 | Cape Town (WCT) | 6 | 1554.1 | 6 | 3 | 1713.5 | 19.4 | Details |
| 2 | South African Open Championship 2026 (Blitz) | Blitz | 2026-06-27 | 2026-06-27 | Cape Town (WCT) | 9 | 1547.4 | 9 | 5.5 | 1711.4 | 7.3 | Details |
| 3 | Elsies River Chess Club Rapid Chess Championship 2026 (Advanced) | Rapid | 2026-06-07 | 2026-06-07 | Cape Town (WCT) | 6 | 1540.7 | 5 | 3 | 1598.7 | 6.7 | Details |
| 4 | UWC Chess Club Open Rapid 2026 (B) | Rapid | 2026-05-02 | 2026-05-02 | Cape Town (WCT) | 6 | 1565.8 | 6 | 3.5 | 1358.8 | -25 | Details |
| 5 | Hermanus Chess Club Open 2026 (Advanced) | Rapid | 2026-04-18 | 2026-04-18 | Overberg (WOS) | 7 | 1530.5 | 7 | 5 | 1739.7 | 26.6 | Details |
| 6 | Hermanus Chess Club Open 2026 (Blitz) | Blitz | 2026-04-17 | 2026-04-17 | Overberg (WOS) | 9 | 1530.5 | 9 | 5.5 | 1677.6 | 8.7 | Details |
| 7 | Spring Slam 2025 (Intermediate) | Rapid | 2025-11-02 | 2025-11-02 | Cape Town (WCT) | 6 | 1533.1 | 6 | 2.5 | 1385.8 | -9.7 | Details |
| 8 | Cape Town Chess Federation Club League 2025 (B) | Classical | 2025-07-26 | 2025-09-27 | Cape Town (WCT) | 11 | 1545.1 | 3 | 0 | 1015.4 | -36.4 | Details |
| 9 | Cape Town Chess Federation Club League 2025 (C) | Classical | 2025-07-26 | 2025-09-27 | Cape Town (WCT) | 11 | 1545.1 | 3 | 3 | 1856.1 | 21.2 | Details |
| 10 | Western Cape Women’s Championship 2025 (Advanced) | Standard | 2025-08-08 | 2025-08-10 | West Coast (WCU) | 6 | 1563.6 | 6 | 3 | 1471.9 | -11.7 | Details |
| 11 | 4th Curro Durbanville Rapid Open 2025 (Advanced) | Rapid | 2025-07-19 | 2025-07-19 | Cape Town (WCT) | 7 | 1539.3 | 7 | 4.5 | 1730.8 | 15.2 | Details |
| 12 | Hermanus Chess Club Open 2025 (Advanced) | Rapid | 2025-04-12 | 2025-04-12 | Overberg (WOS) | 7 | 1532.3 | 7 | 3.5 | 1572.6 | 4 | Details |
| 13 | Hermanus Chess Club Open 2025 (Blitz) | Blitz | 2025-04-11 | 2025-04-11 | Overberg (WOS) | 9 | 1532.3 | 8 | 4 | 1547.3 | 0.4 | Details |
| 14 | Steinitz Festival 2025 (Blitz) | Blitz | 2025-03-14 | 2025-03-14 | Cape Town (WCT) | 7 | 1568.8 | 7 | 4.5 | 1634.2 | 2.1 | Details |
| 15 | Western Cape Closed 2025 (B) | Standard | 2025-03-08 | 2025-03-09 | Cape Town (WCT) | 6 | 1568.8 | 5 | 1.5 | 1335.3 | -25 | Details |
| 16 | Cape of Good Hope Open 2025 (Open Rapid) | Rapid | 2025-02-22 | 2025-02-22 | Cape Town (WCT) | 7 | 1558.8 | 7 | 5 | 1627.6 | 6.2 | Details |
| 17 | Cape Town Masters Challenge 2025 (Blitz) | Blitz | 2025-01-09 | 2025-01-09 | Cape Town (WCT) | 7 | 1555.9 | 7 | 3.5 | 1610.1 | 1.8 | Details |
| 18 | UCT Open Chess Championship 2024 (Elite) | Standard | 2024-10-12 | 2024-10-13 | Cape Town (WCT) | 5 | 1530.9 | 5 | 2 | 1648.8 | 11.8 | Details |
| 19 | Spring Slam 2024 (A) | Rapid | 2024-10-05 | 2024-10-05 | Cape Town (WCT) | 6 | 1530.9 | 6 | 3.5 | 1586.4 | 3.8 | Details |
| 20 | CT League 2024 (A) | Classical | 2024-07-20 | 2024-09-07 | Cape Town (WCT) | 11 | 1522.3 | 9 | 3 | 1566.8 | 5.4 | Details |
| 21 | Cape Town Chess Federation Closed Chess Championships 2024 (B) | Classical | 2024-06-14 | 2024-06-17 | Cape Town (WCT) | 7 | 1527.7 | 5 | 1.5 | 1493.8 | -3.4 | Details |
| 22 | West Coast & Mykonos Open 2024 (Open) | Standard | 2024-05-17 | 2024-05-19 | West Coast (WCU) | 6 | 1404.4 | 5 | 4 | 1662.5 | 27.8 | Details |
| 23 | Steinitz Chess Festival 2024 (Open) | Standard | 2024-05-10 | 2024-05-12 | Cape Town (WCT) | 6 | 1404.4 | 6 | 5 | 1776.5 | 49.2 | Details |
| 24 | Cape Town Masters Challenge 2024 (Advanced) | Classical | 2024-01-03 | 2024-01-07 | Cape Town (WCT) | 7 | 1404.3 | 6 | 2.5 | 1400.4 | -1 | Details |
| 25 | Cape Town Chess Club Annual Blitz Championship 2024 | Blitz | 2024-01-07 | 2024-01-07 | Cape Town (WCT) | 9 | 1404.3 | 9 | 4 | 1441.3 | 1.1 | Details |
| 26 | Bonnievale Open Rapid 2023 (Intermediate) | Rapid | 2023-10-21 | 2023-10-21 | Cape Winelands (WCW) | 6 | 1372 | 6 | 5 | 1638.1 | 20.4 | Details |
| 27 | WP Club League 2023 (A) | Classical | 2023-07-29 | 2023-09-09 | Cape Town (WCT) | 11 | 1407.8 | 10 | 2.5 | 1376.5 | -8.8 | Details |
| 28 | Western Cape Closed Championship 2023 (C) | Standard | 2023-09-24 | 2023-09-25 | Cape Town (WCT) | 6 | 1407.8 | 6 | 2.5 | 1257.5 | -19.9 | Details |
| 29 | Western Cape Closed Championship 2023 (Blitz) | Blitz | 2023-09-23 | 2023-09-25 | Cape Town (WCT) | 7 | 1407.8 | 7 | 4 | 1577.2 | 5.6 | Details |
| 30 | CW Top Schools 2023 (Advanced) | Standard | 2023-08-11 | 2023-08-13 | West Coast (WCU) | 6 | 1363.1 | 6 | 3 | 1555.4 | 24.8 | Details |
| 31 | Rylib Chess Winter Slam 2023 (B) | Rapid | 2023-07-06 | 2023-07-06 | Cape Town (WCT) | 6 | 1331.8 | 6 | 4 | 1595.5 | 17.5 | Details |
| 32 | GPCA Rapid 2023 (Advanced) | Rapid | 2023-06-24 | 2023-06-24 | Cape Town (WCT) | 7 | 1303.8 | 6 | 3.5 | 1509.5 | 15.6 | Details |
| 33 | Casuarina International 2023 (Rapid) | Rapid | 2023-03-11 | 2023-03-12 | Cape Town (WCT) | 6 | 1293.6 | 6 | 2 | 1464.3 | 10.6 | Details |
| 34 | Casuarina International 2023 (Blitz) | Blitz | 2023-03-11 | 2023-03-11 | Cape Town (WCT) | 9 | 1293.6 | 9 | 2 | 1185.9 | -5 | Details |
| 35 | Chess WP Individual Blitz 2023 (Open) | Blitz | 2023-01-03 | 2023-01-03 | Cape Town (WCT) | 7 | 1283.4 | 7 | 4.5 | 1455.2 | 5.7 | Details |
| 36 | Ussa Chess Championships 2022 (Open) | Classical | 2022-12-05 | 2022-12-09 | Frances Baard (NCF) | 9 | 1256 | 9 | 4 | 1325.5 | 15.2 | Details |
| 37 | 2022 Western Province Club League (B) | Classical | 2022-08-20 | 2022-10-01 | Cape Town (WCT) | 11 | 1172 | 7 | 3 | 1453.6 | 42 | Details |
| 38 | Imam Haron 50th Commemoration Event Open 2019 | Rapid | 2019-06-15 | 2019-06-15 | Cape Town (WCT) | 7 | 1200 | 7 | 3 | 1142.5 | -4.9 | Details |
| 39 | 2019 Rylands Library Winter Slam (Intermediate) | Rapid | 2019-06-27 | 2019-06-27 | Cape Town (WCT) | 6 | 1200 | 5 | 1.5 | 992.5 | -9.2 | 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 | 51 |
| Wins | 24 |
| Draws | 8 |
| Losses | 19 |
| White | 26 |
| Black | 25 |
| White wins | 8 |
| Black wins | 16 |
| Score | 28 |
| Percent | 54.9 |
| Dp | 41.7 |
| AOR | 1589.5 |
| Performance | 1631.2 |
Game statistics (History)
| Games | 265 |
| Wins | 113 |
| Draws | 40 |
| Losses | 112 |
| White | 133 |
| Black | 132 |
| White wins | 56 |
| Black wins | 57 |
| Score | 133 |
| Percent | 50.2 |
| Dp | 1.6 |
| AOR | 1506.9 |
| Performance | 1508.5 |
Rankings (Main)
| National | |
| Overall | 1276 |
| Gender | 1156 |
| Age group | 535 |
| Gender/Age | 505 |
| Provincial | |
| Overall | 377 |
| Gender | 337 |
| Age group | 146 |
| Gender/Age | 134 |
| Regional | |
| Overall | 233 |
| Gender | 215 |
| Age group | 106 |
| Gender/Age | 98 |
Rankings (Standard)
| National | |
| Overall | 1720 |
| Gender | 1498 |
| Age group | 602 |
| Gender/Age | 564 |
| Provincial | |
| Overall | 495 |
| Gender | 415 |
| Age group | 155 |
| Gender/Age | 141 |
| Regional | |
| Overall | 293 |
| Gender | 255 |
| Age group | 112 |
| Gender/Age | 103 |
Rankings (Rapid)
| National | |
| Overall | 295 |
| Gender | 276 |
| Age group | 115 |
| Gender/Age | 112 |
| Provincial | |
| Overall | 133 |
| Gender | 125 |
| Age group | 47 |
| Gender/Age | 45 |
| Regional | |
| Overall | 77 |
| Gender | 75 |
| Age group | 32 |
| Gender/Age | 30 |
Rankings (Blitz)
| National | |
| Overall | 137 |
| Gender | 134 |
| Age group | 83 |
| Gender/Age | 81 |
| Provincial | |
| Overall | 52 |
| Gender | 50 |
| Age group | 33 |
| Gender/Age | 31 |
| Regional | |
| Overall | 27 |
| Gender | 26 |
| Age group | 15 |
| Gender/Age | 14 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 51 |
| Score | 28 |
| Percent | 54.9 |
| Aor | 1589.5 |
| Dp | 41.7 |
| Prat | 1631.2 |
Performance (12 months)
| Games | 57 |
| Score | 30.5 |
| Percent | 53.5 |
| Aor | 1575.5 |
| Dp | 29.8 |
| Prat | 1605.3 |
Performance (History)
| Games | 265 |
| Score | 133 |
| Percent | 50.2 |
| Aor | 1506.9 |
| Dp | 1.6 |
| Prat | 1508.5 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Bhawoodien, SH (Shabier Husain) | 4 | 3 | 1 | Casuarina International 2023 (Blitz) | Hermanus Chess Club Open 2025 (Blitz) | Details |
| Overall | 2 | Palmer, J (Jesse) | 4 | 4 | 0 | Western Cape Closed Championship 2023 (Blitz) | Hermanus Chess Club Open 2026 (Blitz) | Details |
| Overall | 3 | Willenberg, RC (Roland Chester) | 3 | 2 | 1 | 2022 Western Province Club League (B) | 4th Curro Durbanville Rapid Open 2025 (Advanced) | Details |
| Overall | 4 | Allie, I (Ishmaeel) | 3 | 1 | 2 | Casuarina International 2023 (Blitz) | Western Cape Women’s Championship 2025 (Advanced) | Details |
| Overall | 5 | Ling, D (Dane) | 2 | 1 | 1 | Chess WP Individual Blitz 2023 (Open) | Cape Town Chess Club Annual Blitz Championship 2024 | Details |
| Standard | 1 | Cindi, M (Mbalenhle) | 2 | 2 | 0 | Cape Town Masters Challenge 2024 (Advanced) | Steinitz Chess Festival 2024 (Open) | Details |
| Standard | 2 | Palmer, J (Jesse) | 2 | 2 | 0 | Cape Town Chess Federation Closed Chess Championships 2024 (B) | UCT Open Chess Championship 2024 (Elite) | Details |
| Standard | 3 | Minnaar, E (Ethan) | 2 | 1 | 1 | CW Top Schools 2023 (Advanced) | West Coast & Mykonos Open 2024 (Open) | Details |
| Rapid | 1 | Rogov, E (Evgenij) | 2 | 2 | 0 | Hermanus Chess Club Open 2025 (Advanced) | 4th Curro Durbanville Rapid Open 2025 (Advanced) | Details |
| Rapid | 2 | Willenberg, RC (Roland Chester) | 2 | 1 | 1 | GPCA Rapid 2023 (Advanced) | 4th Curro Durbanville Rapid Open 2025 (Advanced) | Details |
| Rapid | 3 | Esau, O (Omar ) | 2 | 1 | 1 | GPCA Rapid 2023 (Advanced) | Rylib Chess Winter Slam 2023 (B) | Details |
| Rapid | 4 | Blauw, S (Siyamthanda) | 2 | 0 | 2 | 2019 Rylands Library Winter Slam (Intermediate) | UWC Chess Club Open Rapid 2nd Edition 2026 (A) | Details |
| Rapid | 5 | Raubenheimer, G (Granton) | 2 | 1 | 1 | Casuarina International 2023 (Rapid) | Hermanus Chess Club Open 2026 (Advanced) | Details |
| Blitz | 1 | Bhawoodien, SH (Shabier Husain) | 3 | 2 | 1 | Casuarina International 2023 (Blitz) | Hermanus Chess Club Open 2025 (Blitz) | Details |
| Blitz | 2 | Braaf, J (Jiraan) | 2 | 0 | 2 | Western Cape Closed Championship 2023 (Blitz) | Steinitz Festival 2025 (Blitz) | Details |
| Blitz | 3 | Gluckman, L (Levi) | 2 | 1 | 1 | Chess WP Individual Blitz 2023 (Open) | Casuarina International 2023 (Blitz) | Details |
| Blitz | 4 | Kleinsmidt, CC (Cherwin Chanson) | 2 | 1 | 1 | Western Cape Closed Championship 2023 (Blitz) | South African Open Championship 2026 (Blitz) | Details |
| Blitz | 5 | Palmer, J (Jesse) | 2 | 2 | 0 | Western Cape Closed Championship 2023 (Blitz) | Hermanus Chess Club Open 2026 (Blitz) | Details |