PLAYER PAGE
Personal
Botha, J (Janco)
Chess SA id
1170192179FIDE id
?Date of birth
2017-06-05 (U10)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-09-27Personal details last changed
1900-01-01Junior GPX Games
47Junior GPX Points
1498| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1577.6 | 1577.4 | 1200 | 1200 |
| Raw rating | 1495 | 1494.2 | 1200 | 1200 |
| Weighted rating | 1336.5 | 1337.6 | 1200 | 1200 |
| Weighted performance | 1577.6 | 1577.4 | 0 | 0 |
| Floor | 995 | 994.2 | 700 | 700 |
| K-factor | 32 | 32 | 36 | 36 |
| Min/Max rating change allowed | 108.9 | 109 | 165.8 | 165.8 |
| Highest rating | 1588.62025-09-30 | 1590.22025-09-30 | 12002024-02-01 | 12002024-02-01 |
| Highest raw rating | 14952025-11-01 | 1494.22025-11-01 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted rating | 1336.52025-11-01 | 1337.62025-11-01 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted performance | 1599.32025-09-01 | 1599.82025-09-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -9.4 | -9.4 | 0 | 0 |
| New rating | 1568.2 | 1568 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1577.6 | 1577.4 | 1200 | 1200 |
| Raw rating | 1495 | 1494.2 | 1200 | 1200 |
| Weighted rating | 1336.5 | 1337.6 | 1200 | |
| Weighted performance | 1577.6 | 1577.4 | 0 | |
| K-factor | 32 | 32 | 36 | 36 |
| Floor | 995 | 994.2 | 700 | 700 |
| Max/Min rating change allowed | 108.9 | 109 | 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 | 1495 | 1494.2 | 1200 | 1200 |
| New weighted rating | 1353 | 1353.9 | 1200 | 1200 |
| New weighted performance | 1568.2 | 1568 | 0 | 0 |
| Temp new rating | 1568.2 | 1568 | 1200 | 1200 |
| Temp new rating +/- | -9.4 | -9.4 | 0 | 0 |
| Final new rating +/- | -9.4 | -9.4 | 0 | 0 |
| New rating | 1568.2 | 1568 | 1200 | 1200 |
| New K-factor | 32 | 32 | 36 | 36 |
| New floor | 995 | 994.2 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 42 | 42 | 0 | 0 | |
| 10 | 10 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 52 | 52 | 0 | 0 |
| Games since | |||||||||||||||||
| Main52 | Standard52 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U10 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 766 | 282 | 109 | ||||||||||||||
| Male | 677 | 245 | 97 | ||||||||||||||
| U10 | 30 | 16 | 4 | ||||||||||||||
| U10 Male | 25 | 13 | 3 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 724 | 281 | 106 | ||||||||||||||
| Male | 639 | 242 | 94 | ||||||||||||||
| U10 | 26 | 15 | 4 | ||||||||||||||
| U10 Male | 22 | 13 | 3 | ||||||||||||||
| 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 | 42 | 31 | 73.81 | 202.4 | 1346 | 1548.4 |
| Standard | 42 | 31 | 73.81 | 202.4 | 1346 | 1548.4 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 52 | 37 | 71.15 | 179.8 | 1320.8 | 1500.6 |
| Standard | 52 | 37 | 71.15 | 179.8 | 1320.8 | 1500.6 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1495 | 1494.2 | 1200 | 1200 |
| 2025-09-30 | 1492.9 | 1493.2 | 1200 | 1200 |
| 2025-09-01 | 1488.9 | 1487.8 | 1200 | 1200 |
| 2025-08-01 | 1356.2 | 1354.8 | 1200 | 1200 |
| 2025-07-01 | 1356.2 | 1354.8 | 1200 | 1200 |
| 2025-06-01 | 1356.2 | 1354.8 | 1200 | 1200 |
| 2025-05-01 | 1356.2 | 1354.8 | 1200 | 1200 |
| 2025-04-01 | 1356.2 | 1354.8 | 1200 | 1200 |
| 2025-03-01 | 1356.2 | 1354.8 | 1200 | 1200 |
| 2025-02-01 | 1264.6 | 1274 | 1200 | 1200 |
| 2025-01-01 | 1233.9 | 1238.6 | 1200 | 1200 |
| 2024-12-01 | 1233.9 | 1238.6 | 1200 | 1200 |
| 2024-11-01 | 1233.9 | 1238.6 | 1200 | 1200 |
| 2024-10-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-09-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-08-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-07-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-09-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-05-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-04-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-03-01 | 1219.3 | 1222.4 | 1200 | 1200 |
| 2024-02-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-01-01 | 1200 | 1200 | 1200 | 1200 |
| 2023-12-01 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Gauteng Top Schools Teams (U9) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 2 | 2025 Centurion Chess Open Tournament (U10) | 2025-09-27 | 2025-09-27 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 3 | 2025 Midstream Open Chess Tournament (U10) | 2025-08-25 | 2025-08-25 | Standard | Tshwane (GTP) | 5 | 5 | 5 | Yes | Analysis |
| 4 | 2025 Tshwane South School District CLOSED League Championship (U9A) | 2025-08-15 | 2025-08-15 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
| 5 | 2025 Etienne Lewis Closed Chess Tournament (U10) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 5.5 | Yes | Analysis |
| 6 | Constantiapark Open 2025 (U10) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 7 | 2025 Piet Robbertse Fide Rated Open Chess Tournament (E) | 2025-02-01 | 2025-02-01 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 8 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Gauteng Top Schools Teams (U9) | 2025-08-29 | 2025-08-29 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 2 | 2025 Centurion Chess Open Tournament (U10) | 2025-09-27 | 2025-09-27 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 3 | 2025 Midstream Open Chess Tournament (U10) | 2025-08-25 | 2025-08-25 | Standard | Tshwane (GTP) | 5 | 5 | 5 | Yes | Analysis |
| 4 | 2025 Tshwane South School District CLOSED League Championship (U9A) | 2025-08-15 | 2025-08-15 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
| 5 | 2025 Etienne Lewis Closed Chess Tournament (U10) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 5.5 | Yes | Analysis |
| 6 | Constantiapark Open 2025 (U10) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 7 | 2025 Piet Robbertse Fide Rated Open Chess Tournament (E) | 2025-02-01 | 2025-02-01 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
| 8 | 2025 Tshwane Chess OPEN Registration Tournament (U10) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 9 | Laerskool Doringkloof Primary Open Chess Tournament 2024 (U8) | 2024-10-19 | 2024-10-19 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 10 | 2024 Constantiapark Open (F) | 2024-02-17 | 2024-02-17 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 11 | Tournament2025 Tshwane South School District CLOSED League Championship | Tournament2025 Gauteng Top Schools Teams | ||||||
| date2025-08-15 | rnd3 | typeStandard | result0.5 | date2025-08-29 | rnd3 | typeStandard | result1 | ||
| OpponentMyburgh, A (Anthonij) | OpponentAdam, D (David) | ||||||||
| 2 | 5 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane South School District CLOSED League Championship | ||||||
| date2025-08-09 | rnd4 | typeStandard | result1 | date2025-08-15 | rnd1 | typeStandard | result1 | ||
| OpponentGrobbelaar, M (Mari) | OpponentFranks, J (Jordan) | ||||||||
| 3 | 4 | Tournament2025 Piet Robbertse Fide Rated Open Chess Tournament | TournamentConstantiapark Open 2025 | ||||||
| date2025-02-01 | rnd4 | typeStandard | result1 | date2025-02-15 | rnd2 | typeStandard | result1 | ||
| OpponentMokwena, Y (Yaseen) | OpponentDrotsky, H (Heinru) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | Tournament2025 Tshwane South School District CLOSED League Championship | Tournament2025 Midstream Open Chess Tournament | ||||||
| date2025-08-15 | rnd3 | typeStandard | result0.5 | date2025-08-25 | rnd5 | typeStandard | result1 | ||
| OpponentMyburgh, A (Anthonij) | OpponentVan Dalen, L (Lenert) | ||||||||
| 2 | 5 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane South School District CLOSED League Championship | ||||||
| date2025-08-09 | rnd4 | typeStandard | result1 | date2025-08-15 | rnd1 | typeStandard | result1 | ||
| OpponentGrobbelaar, M (Mari) | OpponentFranks, J (Jordan) | ||||||||
| 3 | 4 | Tournament2025 Piet Robbertse Fide Rated Open Chess Tournament | TournamentConstantiapark Open 2025 | ||||||
| date2025-02-01 | rnd4 | typeStandard | result1 | date2025-02-15 | rnd2 | typeStandard | result1 | ||
| OpponentMokwena, Y (Yaseen) | OpponentDrotsky, H (Heinru) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | Tournament2025 Tshwane South School District CLOSED League Championship | Tournament2025 Midstream Open Chess Tournament | ||||||
| date2025-08-15 | rnd4 | typeStandard | result1 | date2025-08-25 | rnd5 | typeStandard | result1 | ||
| OpponentSimao, R (Raul) | OpponentVan Dalen, L (Lenert) | ||||||||
| 2 | 5 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane South School District CLOSED League Championship | ||||||
| date2025-08-09 | rnd4 | typeStandard | result1 | date2025-08-15 | rnd1 | typeStandard | result1 | ||
| OpponentGrobbelaar, M (Mari) | OpponentFranks, J (Jordan) | ||||||||
| 3 | 4 | Tournament2025 Piet Robbertse Fide Rated Open Chess Tournament | TournamentConstantiapark Open 2025 | ||||||
| date2025-02-01 | rnd4 | typeStandard | result1 | date2025-02-15 | rnd2 | typeStandard | result1 | ||
| OpponentMokwena, Y (Yaseen) | OpponentDrotsky, H (Heinru) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | Tournament2025 Tshwane South School District CLOSED League Championship | Tournament2025 Midstream Open Chess Tournament | ||||||
| date2025-08-15 | rnd4 | typeStandard | result1 | date2025-08-25 | rnd5 | typeStandard | result1 | ||
| OpponentSimao, R (Raul) | OpponentVan Dalen, L (Lenert) | ||||||||
| 2 | 5 | Tournament2025 Etienne Lewis Closed Chess Tournament | Tournament2025 Tshwane South School District CLOSED League Championship | ||||||
| date2025-08-09 | rnd4 | typeStandard | result1 | date2025-08-15 | rnd1 | typeStandard | result1 | ||
| OpponentGrobbelaar, M (Mari) | OpponentFranks, J (Jordan) | ||||||||
| 3 | 4 | Tournament2025 Piet Robbertse Fide Rated Open Chess Tournament | TournamentConstantiapark Open 2025 | ||||||
| date2025-02-01 | rnd4 | typeStandard | result1 | date2025-02-15 | rnd2 | typeStandard | result1 | ||
| OpponentMokwena, Y (Yaseen) | OpponentDrotsky, H (Heinru) | ||||||||
| # | 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 | Gauche ,K (Kian) | 3 | 1 | -141.7 | 3 | 1 | -141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1311.6 | 1169.9 | 1309.3 | 1169.9 | 0 | 0 | 0 | 0 | ||||||
| 2 | Anthonissen ,MV (Mikhael Villem) | 3 | 2 | 141.7 | 3 | 2 | 141.7 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1658.1 | 1799.7 | 1664.1 | 1799.7 | 0 | 0 | 0 | 0 | ||||||
| 3 | Sahoo ,S (Shaurya) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1387.7 | 962.7 | 1385.8 | 962.7 | 0 | 0 | 0 | 0 | ||||||
| 4 | Simao ,R (Raul) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1432.5 | 1432.5 | 1429.2 | 1432.5 | 0 | 0 | 0 | 0 | ||||||
| 5 | Mokwena ,Y (Yaseen) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1204.8 | 1629.8 | 1205.6 | 1629.8 | 0 | 0 | 0 | 0 | ||||||
| 6 | Weyer ,J (Jocelyn) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 7 | Roos ,B (Benjamin) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1405.4 | 980.4 | 1394.1 | 980.4 | 0 | 0 | 0 | 0 | ||||||
| 8 | Olivier ,C (Christiaan) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1544.9 | 1544.9 | 1539.6 | 1544.9 | 0 | 0 | 0 | 0 | ||||||
| 9 | Msibi ,U (Unathi) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1342.8 | 1767.8 | 1340.7 | 1767.8 | 0 | 0 | 0 | 0 | ||||||
| 10 | Mostert ,M (Matthew) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1266.9 | 1691.9 | 1261.4 | 1691.9 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|