PLAYER PAGE
Janlu Ackerman
1170311577Tshwane (GTP)Personal
Main rating
| Rating | 1338.5 |
| K-factor | 32 |
| Floor | 984 |
| Highest | 1484 (2026-04-01) |
| Min/Max +/- allowed | 111 |
| Rating Change () | |
| Games | 4 |
| Score | 1 |
| We | 1.56 |
| SWe | -0.47 |
| Temp +/- | -14.9 |
| Penalties | 0 |
| Weight perform | 1214.7 |
| Final +/- | -14.9 |
| New Rating () | |
| Rating | 1323.6 |
| K-factor | 32 |
| Floor | 984 |
| Highest | 1484 (2026-04-01) |
| Min/Max +/- allowed | 110.6 |
Standard rating
| Rating | 1332.2 |
| K-factor | 32 |
| Floor | 984 |
| Highest | 1484 (2026-04-01) |
| Min/Max +/- allowed | 110.6 |
| Rating Change () | |
| Games | 4 |
| Score | 1 |
| We | 1.51 |
| SWe | -0.51 |
| Temp +/- | -16.3 |
| Penalties | 0 |
| Weight perform | 1214.7 |
| Final +/- | -16.3 |
| New Rating () | |
| Rating | 1315.9 |
| K-factor | 32 |
| Floor | 984 |
| Highest | 1484 (2026-04-01) |
| Min/Max +/- allowed | 110.6 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-10-01) |
| 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 (2024-10-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-10-01) |
| 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 (2024-10-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Tshwane Chess Club Clash Open Team Tournament (U10) | Standard | 2026-09-24 | 2026-09-24 | Tshwane (GTP) | 5 | 1338.5 | 4 | 1 | 1220.3 | -14.9 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Alekhine Open Chess Tournament (C) | Standard | 2026-08-29 | 2026-08-30 | Tshwane (GTP) | 5 | 1338.5 | 5 | 1 | 1195 | -43.6 | Details |
| 2 | 2026 Gauteng North School D3 Team League Finals (U9) | Standard | 2026-08-22 | 2026-08-22 | Tshwane (GTP) | 5 | 1338.5 | 5 | 3.5 | 1356.9 | -9.2 | Details |
| 3 | 2026 Etienne Lewis (U10) | Standard | 2026-08-08 | 2026-08-10 | Tshwane (GTP) | 7 | 1338.5 | 7 | 3 | 1168.1 | -67.7 | Details |
| 4 | 2026 Jacaranda Round Robin Open Chess Tournament (U10) | Standard | 2026-08-01 | 2026-08-01 | Tshwane (GTP) | 5 | 1338.5 | 5 | 2 | 1226.4 | -35.7 | Details |
| 5 | 2026 Tshwane North D3 Cluster 4&5 Teams (U9) | Standard | 2026-07-26 | 2026-07-26 | Tshwane (GTP) | 5 | 1338.5 | 5 | 4 | 1465.1 | 1.8 | Details |
| 6 | 2026 Anton Van Wouw Open (U10) | Standard | 2026-06-20 | 2026-06-20 | Tshwane (GTP) | 5 | 1467.6 | 5 | 3 | 1313.2 | -18.4 | Details |
| 7 | 2026 D3 Tshwane North Individuals (U9) | Standard | 2026-05-09 | 2026-05-09 | Tshwane (GTP) | 5 | 1484 | 5 | 3 | 1383.7 | -16.5 | Details |
| 8 | 2026 D3 Tshwane North School Cluster 4&5 Individuals (U9) | Standard | 2026-04-11 | 2026-04-11 | Tshwane (GTP) | 5 | 1400.3 | 5 | 5 | 1652.1 | 38.5 | Details |
| 9 | 2026 Silver Lakes Open Chess Tournament | Standard | 2026-03-07 | 2026-03-07 | Tshwane (GTP) | 5 | 1371.4 | 5 | 3.5 | 1458.4 | 16.7 | Details |
| 10 | 2026 Tshwane Chess Registration Tournament (U10) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1310 | 5 | 4 | 1529 | 11.3 | Details |
| 11 | Gauteng Inter-Region at Emerald Resort 2025 (U10 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1299.9 | 5 | 3 | 1397.1 | 10 | Details |
| 12 | Lardies Open 2025 (U10) | Standard | 2025-10-18 | 2025-10-18 | Tshwane (GTP) | 5 | 1318.9 | 5 | 1 | 1200.5 | -13.1 | Details |
| 13 | 2025 Gauteng Top Schools Teams (U9) | Standard | 2025-08-29 | 2025-08-29 | Tshwane (GTP) | 5 | 1318.9 | 5 | 4 | 1476.6 | 16.1 | Details |
| 14 | 2025 Tshwane North District CLOSED Team Championships (D3) (U9) | Standard | 2025-08-16 | 2025-08-16 | Tshwane (GTP) | 5 | 1288.2 | 5 | 4 | 1463.2 | 16.4 | Details |
| 15 | 2025 Etienne Lewis Closed Chess Tournament (U10) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1288.2 | 7 | 3 | 1180.6 | -17.3 | Details |
| 16 | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U9) | Standard | 2025-07-26 | 2025-07-26 | Tshwane (GTP) | 5 | 1222.6 | 5 | 4 | 1435.2 | 21.4 | Details |
| 17 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U9 Open) | Standard | 2025-05-24 | 2025-05-24 | Tshwane (GTP) | 5 | 1187.4 | 5 | 3 | 1300.7 | 11.8 | Details |
| 18 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | Standard | 2025-05-10 | 2025-05-10 | Tshwane (GTP) | 5 | 1187.4 | 5 | 3 | 1316.6 | 13.3 | Details |
| 19 | 2025 Silver Lakes Chess Club Open Chess Tournament (U10) | Standard | 2025-05-03 | 2025-05-03 | Tshwane (GTP) | 5 | 1187.4 | 5 | 1 | 1127 | -5.5 | Details |
| 20 | Lubowski Open 2025 (E+F) | Standard | 2025-03-21 | 2025-03-21 | Tshwane (GTP) | 5 | 1215.1 | 5 | 2 | 1110.3 | -10.7 | Details |
| 21 | AHS Open Chess Tournament 2025 (U10) | Standard | 2025-03-01 | 2025-03-01 | Tshwane (GTP) | 5 | 1215.1 | 5 | 2 | 1123.5 | -8.3 | Details |
| 22 | Constantiapark Open 2025 (U10) | Standard | 2025-02-15 | 2025-02-15 | Tshwane (GTP) | 5 | 1182.8 | 5 | 3 | 1360.3 | 17.9 | Details |
| 23 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1157.2 | 5 | 1.5 | 1046.9 | -10.1 | Details |
| 24 | Centurion Chess Open Tournament 2024 (U8) | Standard | 2024-09-21 | 2024-09-21 | Tshwane (GTP) | 5 | 1200 | 5 | 1 | 989.7 | -21.4 | 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 | 56 |
| Wins | 31 |
| Draws | 4 |
| Losses | 21 |
| White | 30 |
| Black | 26 |
| White wins | 16 |
| Black wins | 15 |
| Score | 33 |
| Percent | 58.9 |
| Dp | 75.9 |
| AOR | 1280.5 |
| Performance | 1356.4 |
Game statistics (History)
| Games | 128 |
| Wins | 65 |
| Draws | 7 |
| Losses | 56 |
| White | 64 |
| Black | 64 |
| White wins | 35 |
| Black wins | 30 |
| Score | 68.5 |
| Percent | 53.5 |
| Dp | 29.9 |
| AOR | 1266.7 |
| Performance | 1296.6 |
Rankings (Main)
| National | |
| Overall | 4985 |
| Gender | 4142 |
| Age group | 231 |
| Gender/Age | 188 |
| Provincial | |
| Overall | 1681 |
| Gender | 1402 |
| Age group | 85 |
| Gender/Age | 70 |
| Regional | |
| Overall | 575 |
| Gender | 478 |
| Age group | 36 |
| Gender/Age | 31 |
Rankings (Standard)
| National | |
| Overall | 4581 |
| Gender | 3769 |
| Age group | 226 |
| Gender/Age | 179 |
| Provincial | |
| Overall | 1623 |
| Gender | 1345 |
| Age group | 82 |
| Gender/Age | 66 |
| Regional | |
| Overall | 578 |
| Gender | 481 |
| Age group | 37 |
| Gender/Age | 31 |
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 | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 56 |
| Score | 33 |
| Percent | 58.9 |
| Aor | 1280.5 |
| Dp | 75.9 |
| Prat | 1356.4 |
Performance (12 months)
| Games | 61 |
| Score | 36 |
| Percent | 59 |
| Aor | 1283.1 |
| Dp | 76.6 |
| Prat | 1359.7 |
Performance (History)
| Games | 128 |
| Score | 68.5 |
| Percent | 53.5 |
| Aor | 1266.7 |
| Dp | 29.9 |
| Prat | 1296.6 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Mostert, M (Matthew) | 4 | 1 | 3 | Lubowski Open 2025 (E+F) | 2026 D3 Tshwane North Individuals (U9) | Details |
| Overall | 2 | Maritz, R (Rohan) | 3 | 1 | 2 | 2025 Etienne Lewis Closed Chess Tournament (U10) | 2026 Etienne Lewis (U10) | Details |
| Overall | 3 | Henning, M (Matthew) | 3 | 1 | 2 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2026 Etienne Lewis (U10) | Details |
| Overall | 4 | Le Roux, N (Nickus) | 2 | 1 | 1 | Constantiapark Open 2025 (U10) | 2025 Etienne Lewis Closed Chess Tournament (U10) | Details |
| Overall | 5 | Krog, R (Ruan) | 2 | 2 | 0 | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U9) | 2026 Jacaranda Round Robin Open Chess Tournament (U10) | Details |
| Standard | 1 | Mostert, M (Matthew) | 4 | 1 | 3 | Lubowski Open 2025 (E+F) | 2026 D3 Tshwane North Individuals (U9) | Details |
| Standard | 2 | Maritz, R (Rohan) | 3 | 1 | 2 | 2025 Etienne Lewis Closed Chess Tournament (U10) | 2026 Etienne Lewis (U10) | Details |
| Standard | 3 | Henning, M (Matthew) | 3 | 1 | 2 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2026 Etienne Lewis (U10) | Details |
| Standard | 4 | Yahiaoui, A (Arezki) | 2 | 1 | 1 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U9) | Details |
| Standard | 5 | Kgwale, K (Keratilwe) | 2 | 0 | 2 | 2025 Silver Lakes Chess Club Open Chess Tournament (U10) | 2026 Silver Lakes Open Chess Tournament | Details |