PLAYER PAGE
Billy Etsala-Kourou
1110193135Eden (WEG)Personal
Main rating
| Rating | 1491.5 |
| K-factor | 32 |
| Floor | 997.1 |
| Highest | 1559.7 (2024-03-01) |
| Min/Max +/- allowed | 99 |
| Rating Change () | |
| Games | 13 |
| Score | 11 |
| We | 8.55 |
| SWe | 0.95 |
| Temp +/- | 30.4 |
| Penalties | 0 |
| Weight perform | 1467 |
| Final +/- | +30.4 |
| New Rating () | |
| Rating | 1521.9 |
| K-factor | 32 |
| Floor | 997.1 |
| Highest | 1559.7 (2024-03-01) |
| Min/Max +/- allowed | 99.3 |
Standard rating
| Rating | 1456.5 |
| K-factor | 32 |
| Floor | 1008.4 |
| Highest | 1561 (2024-03-01) |
| Min/Max +/- allowed | 99.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1415.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1456.5 |
| K-factor | 32 |
| Floor | 1008.4 |
| Highest | 1561 (2024-03-01) |
| Min/Max +/- allowed | 99.1 |
Rapid rating
| Rating | 1330.2 |
| K-factor | 36 |
| Floor | 830.2 |
| Highest | 1330.2 (2026-04-01) |
| Min/Max +/- allowed | 137.7 |
| Rating Change () | |
| Games | 13 |
| Score | 11 |
| We | 8.21 |
| SWe | 2.79 |
| Temp +/- | 100.5 |
| Penalties | 0 |
| Weight perform | 1526.2 |
| Final +/- | +137.7 |
| New Rating () | |
| Rating | 1467.9 |
| K-factor | 32 |
| Floor | 967.9 |
| Highest | 1467.9 (2026-07-01) |
| Min/Max +/- allowed | 113.2 |
Blitz rating
| Rating | 1198.2 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-02-01) |
| 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 | 1198.2 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-02-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Wayne Paul Williams Open 2026 | Rapid | 2026-07-25 | 2026-07-25 | Eden (WEG) | 6 | 1491.5 | 6 | 5.5 | 1512.3 | 13.2 | Details |
| 2 | Mandela Day Open 2026 | Rapid | 2026-07-18 | 2026-07-18 | Eden (WEG) | 7 | 1491.5 | 7 | 5.5 | 1621.7 | 17.3 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Eden Chess Trials 2 2026 (U16 Boys) | Standard | 2026-05-23 | 2026-05-23 | Eden (WEG) | 5 | 1487.7 | 4 | 2.5 | 1517.5 | 3.8 | Details |
| 2 | 2026 WCSC HS Individual Championship (U15 Boys) | Standard | 2026-05-02 | 2026-05-03 | Eden (WEG) | 6 | 1526 | 6 | 3 | 1319.4 | -38.3 | Details |
| 3 | Eden Rapid Championship 2026 (B) | Rapid | 2026-04-18 | 2026-04-18 | Eden (WEG) | 6 | 1483.9 | 6 | 4.5 | 1762.7 | 38 | Details |
| 4 | Eden Schools Trials 1 2026 (U15 Boys) | Standard | 2026-03-14 | 2026-03-14 | Eden (WEG) | 5 | 1485.4 | 5 | 3.5 | 1517 | 4.1 | Details |
| 5 | Oudussa Trials 2 2026 (U15) | Standard | 2026-02-28 | 2026-02-28 | Eden (WEG) | 5 | 1485.4 | 5 | 3.5 | 1455.2 | -5.5 | Details |
| 6 | Oudussa Trials 1 2026 (U15) | Standard | 2026-02-14 | 2026-02-14 | Eden (WEG) | 5 | 1477.1 | 5 | 4 | 1520.7 | 5.1 | Details |
| 7 | David Jacobs Blitz 2026 | Blitz | 2026-01-02 | 2026-01-02 | Eden (WEG) | 6 | 1477.2 | 6 | 3 | 1473.1 | -0.1 | Details |
| 8 | 2025 Mzansi Inter Provincial Team Championships (U16 Open) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1490.3 | 5 | 3 | 1460.7 | -3.5 | Details |
| 9 | Sarah Jacobs Blitz 2025 | Blitz | 2025-12-05 | 2025-12-05 | Eden (WEG) | 5 | 1490.3 | 5 | 1 | 1261.1 | -4.7 | Details |
| 10 | Eden League 2025 (First Division) | Standard | 2025-10-11 | 2025-10-11 | Eden (WEG) | 5 | 1497.1 | 4 | 2 | 1442.1 | -4.3 | Details |
| 11 | Western Cape Schools Individual Championship 2025 (U15 Boys) | Standard | 2025-04-26 | 2025-04-27 | West Coast (WCU) | 6 | 1476.1 | 6 | 4 | 1535.1 | 7 | Details |
| 12 | Eden Chess Trials 2 2025 (U16) | Standard | 2025-03-15 | 2025-04-12 | Eden (WEG) | 10 | 1476.1 | 10 | 6.5 | 1506.5 | 6.1 | Details |
| 13 | Oudtshoorn Rapid 2025 (Open) | Rapid | 2025-03-28 | 2025-03-28 | Eden (WEG) | 6 | 1448.9 | 6 | 4 | 1451.5 | 0.3 | Details |
| 14 | Eden Schools Chess Trials 1 2025 (U15 Boys) | Standard | 2025-03-08 | 2025-03-08 | Eden (WEG) | 5 | 1448.9 | 5 | 3.5 | 1465.6 | 1.2 | Details |
| 15 | Oudussa Trials 2025 (U15) | Standard | 2025-03-01 | 2025-03-01 | Eden (WEG) | 5 | 1448.9 | 5 | 4.5 | 1613.6 | 15.6 | Details |
| 16 | Eden Rapid 2025 (A) | Rapid | 2025-02-23 | 2025-02-23 | Eden (WEG) | 6 | 1407.6 | 6 | 3 | 1404.8 | -0.2 | Details |
| 17 | Oudussa Trials 2 2025 (U5 Boys+Girls) | Standard | 2025-02-01 | 2025-02-01 | Eden (WEG) | 5 | 1407.6 | 5 | 5 | 1679.8 | 26.1 | Details |
| 18 | Western Cape PS Individuals Championship 2024 (U13 Boys) | Standard | 2024-05-04 | 2024-05-05 | West Coast (WCU) | 6 | 1394.2 | 6 | 2 | 1268.6 | -14.8 | Details |
| 19 | Eden Chess Trials 2 2024 (U14) | Standard | 2024-04-13 | 2024-04-20 | Eden (WEG) | 10 | 1356.6 | 10 | 6.5 | 1462.8 | 20.9 | Details |
| 20 | Eden School Chess Trials 1 2024 (U13 Boys) | Standard | 2024-03-09 | 2024-03-09 | Eden (WEG) | 5 | 1287.6 | 5 | 4 | 1688.2 | 38.3 | Details |
| 21 | OUDUSSA Trials 2 2024 (U13 Boys+Girls) | Standard | 2024-02-17 | 2024-02-17 | Eden (WEG) | 5 | 1200 | 5 | 4 | 1455.9 | 24.2 | Details |
| 22 | OUDUSSA Trials 1 2024 (U13 Boys+Girls) | Standard | 2024-02-03 | 2024-02-03 | Eden (WEG) | 5 | 1200 | 5 | 3.5 | 1393.7 | 19.6 | Details |
Game statistics ( )
| Games | 13 |
| Wins | 10 |
| Draws | 2 |
| Losses | 1 |
| White | 7 |
| Black | 6 |
| White wins | 4 |
| Black wins | 6 |
| Score | 11 |
| Percent | 84.6 |
| Dp | 294.2 |
| AOR | 1276.9 |
| Performance | 1571.2 |
Game statistics ()
| Games | 50 |
| Wins | 32 |
| Draws | 6 |
| Losses | 12 |
| White | 26 |
| Black | 24 |
| White wins | 16 |
| Black wins | 16 |
| Score | 35 |
| Percent | 70 |
| Dp | 170 |
| AOR | 1355.8 |
| Performance | 1525.8 |
Game statistics (History)
| Games | 138 |
| Wins | 85 |
| Draws | 13 |
| Losses | 40 |
| White | 72 |
| Black | 66 |
| White wins | 49 |
| Black wins | 36 |
| Score | 91.5 |
| Percent | 66.3 |
| Dp | 138.6 |
| AOR | 1352.8 |
| Performance | 1491.3 |
Rankings (Main)
| National | |
| Overall | 2100 |
| Gender | 1833 |
| Age group | 234 |
| Gender/Age | 185 |
| Provincial | |
| Overall | 630 |
| Gender | 533 |
| Age group | 73 |
| Gender/Age | 59 |
| Regional | |
| Overall | 131 |
| Gender | 107 |
| Age group | 18 |
| Gender/Age | 16 |
Rankings (Standard)
| National | |
| Overall | 2354 |
| Gender | 2013 |
| Age group | 304 |
| Gender/Age | 242 |
| Provincial | |
| Overall | 685 |
| Gender | 553 |
| Age group | 93 |
| Gender/Age | 70 |
| Regional | |
| Overall | 151 |
| Gender | 112 |
| Age group | 26 |
| Gender/Age | 20 |
Rankings (Rapid)
| National | |
| Overall | 1619 |
| Gender | 1371 |
| Age group | 320 |
| Gender/Age | 251 |
| Provincial | |
| Overall | 699 |
| Gender | 581 |
| Age group | 119 |
| Gender/Age | 90 |
| Regional | |
| Overall | 69 |
| Gender | 61 |
| Age group | 7 |
| Gender/Age | 6 |
Rankings (Blitz)
| National | |
| Overall | 529 |
| Gender | 477 |
| Age group | 54 |
| Gender/Age | 45 |
| Provincial | |
| Overall | 151 |
| Gender | 139 |
| Age group | 8 |
| Gender/Age | 7 |
| Regional | |
| Overall | 78 |
| Gender | 73 |
| Age group | 3 |
| Gender/Age | 3 |
Performance ( )
| Games | 13 |
| Score | 11 |
| Percent | 84.6 |
| Aor | 1276.9 |
| Dp | 294.2 |
| Prat | 1571.2 |
Performance ()
| Games | 50 |
| Score | 35 |
| Percent | 70 |
| Aor | 1355.8 |
| Dp | 170 |
| Prat | 1525.8 |
Performance (12 months)
| Games | 64 |
| Score | 41 |
| Percent | 64.1 |
| Aor | 1375.3 |
| Dp | 119.5 |
| Prat | 1494.8 |
Performance (History)
| Games | 138 |
| Score | 91.5 |
| Percent | 66.3 |
| Aor | 1352.8 |
| Dp | 138.6 |
| Prat | 1491.3 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Julies, M (Miche) | 4 | 2 | 2 | OUDUSSA Trials 2 2024 (U13 Boys+Girls) | Eden Rapid Championship 2026 (B) | Details |
| Overall | 2 | Arries, J (Jizelle) | 2 | 1 | 1 | Oudussa Trials 2 2025 (U5 Boys+Girls) | Oudussa Trials 2025 (U15) | Details |
| Overall | 3 | Fakier, A (Abdur-Rahmaan) | 2 | 2 | 0 | Eden Chess Trials 2 2025 (U16) | Eden Schools Trials 1 2026 (U15 Boys) | Details |
| Overall | 4 | Julies, K (Keiran) | 2 | 2 | 0 | Eden Chess Trials 2 2024 (U14) | Oudussa Trials 1 2026 (U15) | Details |
| Overall | 5 | Coleman, A (Anthony) | 2 | 1 | 1 | Eden School Chess Trials 1 2024 (U13 Boys) | Eden Chess Trials 2 2024 (U14) | Details |
| Standard | 1 | Julies, M (Miche) | 3 | 2 | 1 | OUDUSSA Trials 2 2024 (U13 Boys+Girls) | Eden Chess Trials 2 2025 (U16) | Details |
| Standard | 2 | Pietersen, E (Ethan) | 2 | 2 | 0 | OUDUSSA Trials 1 2024 (U13 Boys+Girls) | OUDUSSA Trials 2 2024 (U13 Boys+Girls) | Details |
| Standard | 3 | Smal, R (Riley) | 2 | 1 | 1 | Western Cape Schools Individual Championship 2025 (U15 Boys) | 2026 WCSC HS Individual Championship (U15 Boys) | Details |
| Standard | 4 | Veldsman, W (Waydene) | 2 | 1 | 1 | Oudussa Trials 1 2026 (U15) | Oudussa Trials 2 2026 (U15) | Details |
| Standard | 5 | Roberts, I (Iwan) | 2 | 1 | 1 | Eden Schools Trials 1 2026 (U15 Boys) | Eden Chess Trials 2 2026 (U16 Boys) | Details |
| Blitz | 1 | Louw, T (Terwin) | 2 | 1 | 1 | Sarah Jacobs Blitz 2025 | David Jacobs Blitz 2026 | Details |
| Blitz | 2 | Cupido, C (Craig) | 2 | 0 | 2 | Sarah Jacobs Blitz 2025 | David Jacobs Blitz 2026 | Details |