PLAYER PAGE
Personal
Ackerman, J (Janlu)
Chess SA id
1170311577FIDE id
?Date of birth
2017-04-22 (U10)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-12-07Personal details last changed
2025-03-25Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1317 | 1319.3 | 1200 | 1200 |
| Raw rating | 1309.6 | 1317.5 | 1200 | 1200 |
| Weighted rating | 1235.3 | 1236.4 | 1200 | 1200 |
| Weighted performance | 1317 | 1319.3 | 0 | 0 |
| Floor | 809.6 | 817.5 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 141.8 | 140.3 | 165.8 | 165.8 |
| Highest rating | 1332.82025-09-01 | 1332.32025-09-01 | 12002024-10-01 | 12002024-10-01 |
| Highest raw rating | 1309.62026-01-01 | 1317.52026-01-01 | 12002024-10-01 | 12002024-10-01 |
| Highest weighted rating | 1235.32026-01-01 | 1236.42026-01-01 | 12002024-10-01 | 12002024-10-01 |
| Highest weighted performance | 1332.82025-09-01 | 1332.32025-09-01 | 12002024-10-01 | 12002024-10-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -7.4 | -1.8 | 0 | 0 |
| New rating | 1309.6 | 1317.5 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1317 | 1319.3 | 1200 | 1200 |
| Raw rating | 1309.6 | 1317.5 | 1200 | 1200 |
| Weighted rating | 1235.3 | 1236.4 | 1200 | |
| Weighted performance | 1317 | 1319.3 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 809.6 | 817.5 | 700 | 700 |
| Max/Min rating change allowed | 141.8 | 140.3 | 165.8 | 165.8 |
| Games | 0 | 0 | 0 | 0 |
| Score | 0 | 0 | 0 | 0 |
| Expected score | 0 | 0 | 0 | 0 |
| Score-Expected | 0 | 0 | 0 | 0 |
| Temp raw +/- | 0 | 0 | 0 | 0 |
| Final raw +/- | 0 | 0 | 0 | 0 |
| New raw rating | 1309.6 | 1317.5 | 1200 | 1200 |
| New weighted rating | 1242.7 | 1244.5 | 1200 | 1200 |
| New weighted performance | 1308.2 | 1310.5 | 0 | 0 |
| Temp new rating | 1309.6 | 1317.5 | 1200 | 1200 |
| Temp new rating +/- | -7.4 | -1.8 | 0 | 0 |
| Final new rating +/- | -7.4 | -1.8 | 0 | 0 |
| New rating | 1309.6 | 1317.5 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 809.6 | 817.5 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 62 | 62 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 67 | 67 | 0 | 0 |
| Games since | |||||||||||||||||
| Main67 | Standard67 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U10 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 3283 | 1092 | 385 | ||||||||||||||
| Male | 2564 | 851 | 293 | ||||||||||||||
| U10 | 276 | 105 | 45 | ||||||||||||||
| U10 Male | 221 | 91 | 38 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 3163 | 1137 | 428 | ||||||||||||||
| Male | 2480 | 896 | 331 | ||||||||||||||
| U10 | 264 | 111 | 52 | ||||||||||||||
| U10 Male | 214 | 97 | 45 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U10 | -1 | -1 | -1 | ||||||||||||||
| U10 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U10 | -1 | -1 | -1 | ||||||||||||||
| U10 Male | -1 | -1 | -1 | ||||||||||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 62 | 31.5 | 50.81 | 6.9 | 1252.3 | 1259.2 |
| Standard | 62 | 31.5 | 50.81 | 6.9 | 1252.3 | 1259.2 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 67 | 32.5 | 48.51 | -12.7 | 1251.8 | 1239.1 |
| Standard | 67 | 32.5 | 48.51 | -12.7 | 1251.8 | 1239.1 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2026-01-01 | 1309.6 | 1317.5 | 1200 | 1200 |
| 2025-11-30 | 1292 | 1297.3 | 1200 | 1200 |
| 2025-11-01 | 1292 | 1297.3 | 1200 | 1200 |
| 2025-09-30 | 1286.7 | 1290.1 | 1200 | 1200 |
| 2025-09-01 | 1286.7 | 1290.1 | 1200 | 1200 |
| 2025-08-01 | 1288.2 | 1286.7 | 1200 | 1200 |
| 2025-07-01 | 1222.6 | 1228.7 | 1200 | 1200 |
| 2025-06-01 | 1222.6 | 1228.7 | 1200 | 1200 |
| 2025-05-01 | 1187.4 | 1184.9 | 1200 | 1200 |
| 2025-04-01 | 1187.2 | 1184.9 | 1200 | 1200 |
| 2025-03-01 | 1215.1 | 1219.7 | 1200 | 1200 |
| 2025-02-01 | 1182.8 | 1179.4 | 1200 | 1200 |
| 2025-01-01 | 1157.2 | 1148.4 | 1200 | 1200 |
| 2024-12-01 | 1157.2 | 1148.4 | 1200 | 1200 |
| 2024-11-01 | 1157.2 | 1148.4 | 1200 | 1200 |
| 2024-10-01 | 1157.2 | 1148.4 | 1200 | 1200 |
| 2024-09-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-11-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-07-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-06-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-05-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-04-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-03-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-02-01 | 1200 | 1200 | 1200 | 1200 |
Comming soon.
Tournaments
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gauteng Inter-Region at Emerald Resort 2025 (U10 Candidates) | 2025-12-06 | 2025-12-07 | Standard | Sedibeng (GSV) | 5 | 5 | 3 | Yes | Analysis |
| 2 | Lardies Open 2025 (U10) | 2025-10-18 | 2025-10-18 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 3 | 2025 Gauteng Top Schools Teams (U9) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 4 | 2025 Tshwane North District CLOSED Team Championships (D3) (U9) | 2025-08-16 | 2025-08-16 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 5 | 2025 Etienne Lewis Closed Chess Tournament (U10) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 3 | Yes | Analysis |
| 6 | 2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U9) | 2025-07-26 | 2025-07-26 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 7 | 2025 Tshwane North School District CLOSED Individual Chess Championship (U9 Open) | 2025-05-24 | 2025-05-24 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 8 | 2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U9 Open) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 9 | 2025 Silver Lakes Chess Club Open Chess Tournament (U10) | 2025-05-03 | 2025-05-03 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 10 | Lubowski Open 2025 (E+F) | 2025-03-21 | 2025-03-21 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 11 | AHS Open Chess Tournament 2025 (U10) | 2025-03-01 | 2025-03-01 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 12 | Constantiapark Open 2025 (U10) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 13 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 1.5 | Yes | Analysis |
| 14 | Centurion Chess Open Tournament 2024 (U8) | 2024-09-21 | 2024-09-21 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentVan Greunen, L (Luke) | OpponentHeyneke, A (Alienka) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-24 | rnd1 | typeStandard | result1 | ||
| OpponentMulder, D (Dirk) | OpponentTjela, K (Karabo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentVan Greunen, L (Luke) | OpponentHeyneke, A (Alienka) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-24 | rnd1 | typeStandard | result1 | ||
| OpponentMulder, D (Dirk) | OpponentTjela, K (Karabo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentVan Greunen, L (Luke) | OpponentHeyneke, A (Alienka) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-24 | rnd1 | typeStandard | result1 | ||
| OpponentMulder, D (Dirk) | OpponentTjela, K (Karabo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane North District CLOSED Team Championships (D3) | ||||||
| date2025-08-10 | rnd7 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentVan Greunen, L (Luke) | OpponentHeyneke, A (Alienka) | ||||||||
| 2 | 4 | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | Tournament2025 Tshwane North School District Cluster 4 & 5 Team League (D3) | ||||||
| date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd5 | typeStandard | result1 | ||
| OpponentYahiaoui, A (Arezki) | OpponentPienaar, J (Jason) | ||||||||
| 3 | 4 | Tournament2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 | Tournament2025 Tshwane North School District CLOSED Individual Chess Championship | ||||||
| date2025-05-10 | rnd3 | typeStandard | result1 | date2025-05-24 | rnd1 | typeStandard | result1 | ||
| OpponentMulder, D (Dirk) | OpponentTjela, K (Karabo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
Top 10 opponents most often played
| # | Opponent | Main | Standard | Rapid | Blitz | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
| Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
| 1 | Mostert ,M (Matthew) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1245.5 | 820.5 | 1241.9 | 820.5 | 0 | 0 | 0 | 0 | ||||||
| 2 | Viljoen ,R (Rouxle) | 2 | 1.5 | 212.5 | 2 | 1.5 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1198.3 | 1410.8 | 1197.9 | 1410.8 | 0 | 0 | 0 | 0 | ||||||
| 3 | Yahiaoui ,A (Arezki) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1105.6 | 1530.6 | 1094.1 | 1530.6 | 0 | 0 | 0 | 0 | ||||||
| 4 | Khosana ,O (Onalerona) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1627.1 | 1202.1 | 1623.8 | 1202.1 | 0 | 0 | 0 | 0 | ||||||
| 5 | Ramonyai ,M (Mbhekeni) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1333 | 908 | 1324.6 | 908 | 0 | 0 | 0 | 0 | ||||||
| 6 | Heyneke ,A (Alienka) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1247.8 | 1672.8 | 1255 | 1672.8 | 0 | 0 | 0 | 0 | ||||||
| 7 | Le Roux ,N (Nickus) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1205.7 | 1205.7 | 1206.8 | 1205.7 | 0 | 0 | 0 | 0 | ||||||
| 8 | Henning ,M (Matthew) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1199.8 | 774.8 | 1199.7 | 774.8 | 0 | 0 | 0 | 0 | ||||||
| 9 | Marais ,F (Franco) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1251.9 | 1676.9 | 1262.4 | 1676.9 | 0 | 0 | 0 | 0 | ||||||
| 10 | Tjela ,K (Karabo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|