PLAYER PAGE
Derek Barnes
1150304358Tshwane (GTP)Personal
Main rating
| Rating | 1369 |
| K-factor | 36 |
| Floor | 764 |
| Highest | 1396.9 (2024-05-01) |
| Min/Max +/- allowed | 125 |
| Rating Change () | |
| Games | 10 |
| Score | 5 |
| We | 6.95 |
| SWe | -2.27 |
| Temp +/- | -81.6 |
| Penalties | 0 |
| Weight perform | 1228.4 |
| Final +/- | -81.6 |
| New Rating () | |
| Rating | 1287.4 |
| K-factor | 36 |
| Floor | 764 |
| Highest | 1396.9 (2024-05-01) |
| Min/Max +/- allowed | 125.3 |
Standard rating
| Rating | 1376 |
| K-factor | 36 |
| Floor | 779.3 |
| Highest | 1396 (2024-05-01) |
| Min/Max +/- allowed | 125.4 |
| Rating Change () | |
| Games | 5 |
| Score | 2 |
| We | 3.36 |
| SWe | -1.36 |
| Temp +/- | -49.1 |
| Penalties | 0 |
| Weight perform | 1289.5 |
| Final +/- | -49.1 |
| New Rating () | |
| Rating | 1327 |
| K-factor | 36 |
| Floor | 779.3 |
| Highest | 1396 (2024-05-01) |
| Min/Max +/- allowed | 125.4 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-06-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 5 |
| Score | 3 |
| We | 3.22 |
| SWe | -1.13 |
| Temp +/- | -40.8 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | -40.8 |
| New Rating () | |
| Rating | 1159.2 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-06-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-06-01) |
| 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 (2024-06-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Gauteng Northl Chess Tournament (D) | Standard | 2026-10-10 | 2026-10-11 | Tshwane (GTP) | 5 | 1369 | 5 | 2 | 1136.3 | -44.5 | Details |
| 2 | Gauteng Top Schools Teams 2026 (U13 Open) | Rapid | 2026-08-28 | 2026-08-28 | Ekurhuleni (GE) | 5 | 1369 | 5 | 3 | 1194.4 | -16.9 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Etienne Lewis (U12) | Standard | 2026-08-08 | 2026-08-10 | Tshwane (GTP) | 7 | 1369 | 7 | 3.5 | 1410.5 | 24.9 | Details |
| 2 | 2026 Gauteng North School District CLOSED League Finals - D1 (U13 Open) | Standard | 2026-08-15 | 2026-08-15 | Tshwane (GTP) | 5 | 1369 | 5 | 5 | 1567.6 | 47.8 | Details |
| 3 | 2026 Jacaranda Round Robin Open Chess Tournament (J) | Standard | 2026-08-01 | 2026-08-01 | Tshwane (GTP) | 5 | 1369 | 5 | 1 | 969.1 | -61 | Details |
| 4 | 2026 Menlo Open (U12) | Standard | 2026-07-25 | 2026-07-25 | Tshwane (GTP) | 5 | 1369 | 5 | 3 | 1559.5 | 42.3 | Details |
| 5 | Wynie Robbertse Chess Tournament 2026 (U12) | Standard | 2026-06-27 | 2026-06-27 | Tshwane (GTP) | 5 | 1304.5 | 5 | 3 | 1182.7 | -16.7 | Details |
| 6 | Elise Steenkamp 2026 (Bishop 2) | Standard | 2026-06-13 | 2026-06-14 | Tshwane (GTP) | 5 | 1304.5 | 5 | 3 | 1448.7 | 27.1 | Details |
| 7 | 2026 PBHS Open (U12) | Standard | 2026-04-25 | 2026-04-25 | Tshwane (GTP) | 5 | 1299 | 5 | 2 | 1270.7 | -4.7 | Details |
| 8 | 2026 Lubowski Open Chess Tournament (D1) | Standard | 2026-03-21 | 2026-03-22 | Tshwane (GTP) | 5 | 1237.9 | 5 | 3 | 1341.6 | 19.2 | Details |
| 9 | 2026 Silver Lakes Open Chess Tournament (U12) | Standard | 2026-03-07 | 2026-03-07 | Tshwane (GTP) | 5 | 1237.9 | 5 | 2 | 1318.8 | 15.2 | Details |
| 10 | 2026 Constantiapark Open Chess Tournament (U12) | Standard | 2026-02-14 | 2026-02-14 | Tshwane (GTP) | 5 | 1224 | 5 | 3 | 1454.7 | 22.2 | Details |
| 11 | 2026 Tshwane Chess Registration Tournament (U12-1) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1224 | 5 | 1.5 | 1195.6 | -3.7 | Details |
| 12 | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1292 | 4 | 0 | 919.3 | -33.1 | Details |
| 13 | Lardies Open 2025 (U12) | Standard | 2025-10-18 | 2025-10-18 | Tshwane (GTP) | 5 | 1219.8 | 5 | 2 | 1244.8 | 1.7 | Details |
| 14 | 2025 Gauteng Top Schools Teams (U11) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1219.8 | 5 | 4 | 1523.1 | 28.9 | Details |
| 15 | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | Standard | 2025-08-16 | 2025-08-16 | Tshwane (GTP) | 5 | 1236.2 | 5 | 3.5 | 1437.5 | 20.3 | Details |
| 16 | 2025 Etienne Lewis Closed Chess Tournament (U12) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1236.2 | 7 | 1 | 1012.9 | -35.5 | Details |
| 17 | 2025 Menlo Open (U12) | Standard | 2025-07-26 | 2025-07-26 | Tshwane (GTP) | 5 | 1219.4 | 5 | 2.5 | 1309.2 | 9.3 | Details |
| 18 | 2025 Gauteng North School Individual Championships D1 (U11 Open) | Standard | 2025-05-17 | 2025-05-17 | Tshwane (GTP) | 5 | 1218.3 | 4 | 2 | 1196.7 | -1.7 | Details |
| 19 | Lubowski Open 2025 (D2) | Standard | 2025-03-21 | 2025-03-22 | Tshwane (GTP) | 5 | 1214.1 | 4 | 0 | 877.8 | -29.8 | Details |
| 20 | Constantiapark Open 2025 (U12) | Standard | 2025-02-15 | 2025-02-15 | Tshwane (GTP) | 5 | 1212.8 | 4 | 0 | 863.9 | -27.4 | Details |
| 21 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1194 | 5 | 0.5 | 942.7 | -25.4 | Details |
| 22 | Lardies Ope 2024 (U10) | Standard | 2024-10-26 | 2024-10-26 | Tshwane (GTP) | 5 | 1246.6 | 4 | 0.5 | 872.1 | -29.2 | Details |
| 23 | Gauteng Top Schools 2024 (U9 Open) | Standard | 2024-10-04 | 2024-10-04 | Ekurhuleni (GE) | 5 | 1261.2 | 5 | 2 | 1184.8 | -8.1 | Details |
| 24 | D1 Gauteng North District School Closed 2024 (U9) | Standard | 2024-08-03 | 2024-08-03 | Tshwane (GTP) | 5 | 1238.8 | 5 | 3.5 | 1359.8 | 12.4 | Details |
| 25 | 2024 Gauteng North School District Individual Championships - D1 (U9 Boys) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1200 | 5 | 3.5 | 1392.1 | 19.4 | Details |
Game statistics ( )
| Games | 5 |
| Wins | 2 |
| Draws | 0 |
| Losses | 3 |
| White | 2 |
| Black | 3 |
| White wins | 1 |
| Black wins | 1 |
| Score | 2 |
| Percent | 40 |
| Dp | -85 |
| AOR | 1221.3 |
| Performance | 1136.3 |
Game statistics ()
| Games | 67 |
| Wins | 34 |
| Draws | 2 |
| Losses | 31 |
| White | 33 |
| Black | 34 |
| White wins | 20 |
| Black wins | 14 |
| Score | 35 |
| Percent | 52.2 |
| Dp | 19 |
| AOR | 1295.5 |
| Performance | 1314.5 |
Game statistics (History)
| Games | 134 |
| Wins | 54 |
| Draws | 12 |
| Losses | 68 |
| White | 67 |
| Black | 67 |
| White wins | 29 |
| Black wins | 25 |
| Score | 60 |
| Percent | 44.8 |
| Dp | -44.4 |
| AOR | 1283.6 |
| Performance | 1239.2 |
Rankings (Main)
| National | |
| Overall | 4225 |
| Gender | 3529 |
| Age group | 412 |
| Gender/Age | 318 |
| Provincial | |
| Overall | 1452 |
| Gender | 1216 |
| Age group | 143 |
| Gender/Age | 115 |
| Regional | |
| Overall | 506 |
| Gender | 418 |
| Age group | 44 |
| Gender/Age | 30 |
Rankings (Standard)
| National | |
| Overall | 3605 |
| Gender | 2991 |
| Age group | 358 |
| Gender/Age | 275 |
| Provincial | |
| Overall | 1292 |
| Gender | 1087 |
| Age group | 123 |
| Gender/Age | 101 |
| Regional | |
| Overall | 473 |
| Gender | 392 |
| Age group | 42 |
| Gender/Age | 29 |
Rankings (Rapid)
| 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 |
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 | 5 |
| Score | 2 |
| Percent | 40 |
| Aor | 1221.3 |
| Dp | -85 |
| Prat | 1136.3 |
Performance ()
| Games | 67 |
| Score | 35 |
| Percent | 52.2 |
| Aor | 1295.5 |
| Dp | 19 |
| Prat | 1314.5 |
Performance (12 months)
| Games | 71 |
| Score | 35 |
| Percent | 49.3 |
| Aor | 1298.2 |
| Dp | -6 |
| Prat | 1292.2 |
Performance (History)
| Games | 134 |
| Score | 60 |
| Percent | 44.8 |
| Aor | 1283.6 |
| Dp | -44.4 |
| Prat | 1239.2 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Venter, D (Daniel) | 3 | 2 | 1 | Lardies Ope 2024 (U10) | 2026 Constantiapark Open Chess Tournament (U12) | Details |
| Overall | 2 | Motumi, T (Tsepe) | 3 | 2 | 1 | D1 Gauteng North District School Closed 2024 (U9) | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | Details |
| Overall | 3 | Stander, J (Johannes Hendrik) | 2 | 2 | 0 | 2026 Silver Lakes Open Chess Tournament (U12) | Wynie Robbertse Chess Tournament 2026 (U12) | Details |
| Overall | 4 | Khosana, O (Onalerona) | 2 | 1 | 1 | 2026 PBHS Open (U12) | Elise Steenkamp 2026 (Bishop 2) | Details |
| Overall | 5 | Kgwale, O (Obotegile) | 2 | 2 | 0 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025 Etienne Lewis Closed Chess Tournament (U12) | Details |
| Standard | 1 | Venter, D (Daniel) | 3 | 2 | 1 | Lardies Ope 2024 (U10) | 2026 Constantiapark Open Chess Tournament (U12) | Details |
| Standard | 2 | Motumi, T (Tsepe) | 3 | 2 | 1 | D1 Gauteng North District School Closed 2024 (U9) | 2025 Gauteng North School District CLOSED League Finals - D1 (U11) | Details |
| Standard | 3 | Kgwale, O (Obotegile) | 2 | 2 | 0 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025 Etienne Lewis Closed Chess Tournament (U12) | Details |
| Standard | 4 | Mendonca, N (Nelita) | 2 | 1 | 1 | Constantiapark Open 2025 (U12) | Lardies Open 2025 (U12) | Details |
| Standard | 5 | Khosana, O (Onalerona) | 2 | 1 | 1 | 2026 PBHS Open (U12) | Elise Steenkamp 2026 (Bishop 2) | Details |