PLAYER PAGE
Personal

Viljoen, JA (Jacobus Andrew)
Chess SA id
171041756FIDE id
?Date of birth
1971-12-07 (Adult)Gender
MaleRegion
Dr Kenneth Kaunda (NWP)Citizen
RSATitles
Chess SA registered
NoLast active game
2024-03-02Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
Rating | 1262.3 | 1266.2 | 1100 | 1100 |
Raw rating | 1262.3 | 1266.2 | 1100 | 1100 |
Weighted rating | 1261.2 | 1264.9 | 1100 | 1100 |
Weighted performance | 970.5 | 968.9 | 0 | 0 |
Floor | 762.3 | 766.2 | 600 | 600 |
K-factor | 36 | 36 | 40 | 40 |
Min/Max rating change allowed | 151.7 | 150.9 | 191.2 | 191.2 |
Highest rating | 1262.32024-04-01 | 1266.22024-04-01 | 12002024-02-01 | 12002024-02-01 |
Highest raw rating | 1262.32024-04-01 | 1266.22024-04-01 | 11002024-02-01 | 11002024-02-01 |
Highest weighted rating | 1260.22025-08-01 | 1263.82025-08-01 | 11002024-11-01 | 11002024-11-01 |
Highest weighted performance | 1253.62023-07-01 | 12542023-07-01 | 12002024-02-01 | 12002024-02-01 |
Prediction | ||||
---|---|---|---|---|
Item | Main | Standard | Rapid | Blitz |
Rating change | 0 | 0 | 0 | 0 |
New rating | 1262.3 | 1266.2 | 1100 | 1100 |
Analysis | ||||
Rating | 1262.3 | 1266.2 | 1100 | 1100 |
Raw rating | 1262.3 | 1266.2 | 1100 | 1100 |
Weighted rating | 1261.2 | 1264.9 | 1100 | |
Weighted performance | 970.5 | 968.9 | 0 | |
K-factor | 36 | 36 | 40 | 40 |
Floor | 762.3 | 766.2 | 600 | 600 |
Max/Min rating change allowed | 151.7 | 150.9 | 191.2 | 191.2 |
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 | 1262.3 | 1266.2 | 1100 | 1100 |
New weighted rating | 1261.6 | 1265.3 | 1100 | 1100 |
New weighted performance | 970.1 | 968.5 | 0 | 0 |
Temp new rating | 1262.3 | 1266.2 | 1100 | 1100 |
Temp new rating +/- | 0 | 0 | 0 | 0 |
Final new rating +/- | 0 | 0 | 0 | 0 |
New rating | 1262.3 | 1266.2 | 1100 | 1100 |
New K-factor | 36 | 36 | 40 | 40 |
New floor | 762.3 | 766.2 | 600 | 600 |
Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
0 | 0 | 0 | 0 | |
0 | 0 | 0 | 0 | |
5 | 5 | 0 | 0 | |
22 | 22 | 0 | 0 | |
2 | 2 | 0 | 0 | |
0 | 0 | 0 | 0 | |
History | 31 | 31 | 0 | 0 |
Games since | |||||||||||||||||
Main5 | Standard5 | Rapid0 | Blitz0 | ||||||||||||||
Gender | Male | ||||||||||||||||
Age group | Adult | ||||||||||||||||
Region | Dr Kenneth Kaunda (NWP) | ||||||||||||||||
Province | Northwest (NW) | ||||||||||||||||
Main | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
Adult | -1 | -1 | -1 | ||||||||||||||
Adult Male | -1 | -1 | -1 | ||||||||||||||
Standard | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
Adult | -1 | -1 | -1 | ||||||||||||||
Adult Male | -1 | -1 | -1 | ||||||||||||||
Rapid | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
Adult | -1 | -1 | -1 | ||||||||||||||
Adult Male | -1 | -1 | -1 | ||||||||||||||
Blitz | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
Adult | -1 | -1 | -1 | ||||||||||||||
Adult 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 | 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 |
History | ||||||
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 29 | 11 | 37.93 | -102.6 | 1358.6 | 1256 |
Standard | 29 | 11 | 37.93 | -102.6 | 1358.6 | 1256 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
Date | Main | Standard | Rapid | Blitz |
2025-09-30 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-09-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-08-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-07-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-06-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-05-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-04-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-03-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-02-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2025-01-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-12-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-11-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-10-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-09-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-08-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-07-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-06-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-08-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-04-01 | 1262.3 | 1266.2 | 1100 | 1100 |
2024-03-01 | 1240.2 | 1240.6 | 1100 | 1100 |
2024-02-01 | 1240.2 | 1240.6 | 1100 | 1100 |
2024-01-01 | 1240.2 | 1240.6 | 1100 | 1100 |
2023-12-01 | 1240.2 | 1240.6 | 1100 | 1100 |
2023-11-01 | 1240.2 | 1240.6 | 1100 | 1100 |
Comming soon.
Tournaments
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
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# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
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Last 500 tournaments since 01 January 2018
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | DR KKD Ferdies Mar 2024 (A) | 2024-03-02 | 2024-03-02 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 2 | Yes | Analysis |
2 | DR Kenneth Kaunda Volkies 29 Jul 2023 (A) | 2023-07-29 | 2023-07-29 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 4 | 1 | Yes | Analysis |
3 | Dr Kenneth Kaunda Volkies 2023 (A+B) | 2023-06-10 | 2023-06-10 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 2 | Yes | Analysis |
4 | Dr KKD Curro 2023 (Open) | 2023-05-13 | 2023-05-13 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 5 | 3 | Yes | Analysis |
5 | DR Kenneth Kaunda Curro 2023 (A+B) | 2023-04-22 | 2023-04-22 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 4 | 1 | Yes | Analysis |
6 | Dr. Kenneth Kaunda Saamtrek 2023 (Open) | 2023-02-04 | 2023-02-04 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 4 | 2 | Yes | Analysis |
7 | La Hoff Primary School 2022 (A) | 2022-07-23 | 2022-07-23 | Standard | Dr Kenneth Kaunda (NWP) | 5 | 2 | 0 | Yes | Analysis |
Top 3 Streaks
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 3 | TournamentDR KKD Ferdies Mar 2024 | TournamentDR KKD Ferdies Mar 2024 | ||||||
date2024-03-02 | rnd2 | typeStandard | result0.5 | date2024-03-02 | rnd4 | typeStandard | result0.5 | ||
OpponentVan Meersbergen, E (Ettienne) | OpponentFaku, M (Maphasa) | ||||||||
2 | 2 | TournamentDr KKD Curro 2023 | TournamentDr KKD Curro 2023 | ||||||
date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-13 | rnd3 | typeStandard | result1 | ||
OpponentSegobola, K (Kgashane) | OpponentMalherbe, GM (Gideon) | ||||||||
3 | 1 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | ||||||
date2023-07-29 | rnd5 | typeStandard | result1 | date2023-07-29 | rnd5 | typeStandard | result1 | ||
OpponentHattingh, JH (Johannes) | OpponentHattingh, JH (Johannes) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 3 | TournamentDR KKD Ferdies Mar 2024 | TournamentDR KKD Ferdies Mar 2024 | ||||||
date2024-03-02 | rnd2 | typeStandard | result0.5 | date2024-03-02 | rnd4 | typeStandard | result0.5 | ||
OpponentVan Meersbergen, E (Ettienne) | OpponentFaku, M (Maphasa) | ||||||||
2 | 2 | TournamentDr KKD Curro 2023 | TournamentDr KKD Curro 2023 | ||||||
date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-13 | rnd3 | typeStandard | result1 | ||
OpponentSegobola, K (Kgashane) | OpponentMalherbe, GM (Gideon) | ||||||||
3 | 1 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | ||||||
date2023-07-29 | rnd5 | typeStandard | result1 | date2023-07-29 | rnd5 | typeStandard | result1 | ||
OpponentHattingh, JH (Johannes) | OpponentHattingh, JH (Johannes) |
# | Games | Start | End |
---|
# | Games | Start | End |
---|
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 2 | TournamentDr KKD Curro 2023 | TournamentDr KKD Curro 2023 | ||||||
date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-13 | rnd3 | typeStandard | result1 | ||
OpponentSegobola, K (Kgashane) | OpponentMalherbe, GM (Gideon) | ||||||||
2 | 1 | TournamentDR KKD Ferdies Mar 2024 | TournamentDR KKD Ferdies Mar 2024 | ||||||
date2024-03-02 | rnd3 | typeStandard | result1 | date2024-03-02 | rnd3 | typeStandard | result1 | ||
OpponentMeyambo, U (Unathi) | OpponentMeyambo, U (Unathi) | ||||||||
3 | 1 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | ||||||
date2023-07-29 | rnd5 | typeStandard | result1 | date2023-07-29 | rnd5 | typeStandard | result1 | ||
OpponentHattingh, JH (Johannes) | OpponentHattingh, JH (Johannes) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 2 | TournamentDr KKD Curro 2023 | TournamentDr KKD Curro 2023 | ||||||
date2023-05-13 | rnd2 | typeStandard | result1 | date2023-05-13 | rnd3 | typeStandard | result1 | ||
OpponentSegobola, K (Kgashane) | OpponentMalherbe, GM (Gideon) | ||||||||
2 | 1 | TournamentDR KKD Ferdies Mar 2024 | TournamentDR KKD Ferdies Mar 2024 | ||||||
date2024-03-02 | rnd3 | typeStandard | result1 | date2024-03-02 | rnd3 | typeStandard | result1 | ||
OpponentMeyambo, U (Unathi) | OpponentMeyambo, U (Unathi) | ||||||||
3 | 1 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | TournamentDR Kenneth Kaunda Volkies 29 Jul 2023 | ||||||
date2023-07-29 | rnd5 | typeStandard | result1 | date2023-07-29 | rnd5 | typeStandard | result1 | ||
OpponentHattingh, JH (Johannes) | OpponentHattingh, JH (Johannes) |
# | 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 | Viljoen ,J (Jaden) | 4 | 0 | -425 | 4 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1399.6 | 974.6 | 1400.7 | 974.6 | 0 | 0 | 0 | 0 | ||||||
2 | Molusi ,K (Katlego) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1529.5 | 1104.5 | 1530.5 | 1104.5 | 0 | 0 | 0 | 0 | ||||||
3 | Libisi ,L (Libisi) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1411.7 | 986.7 | 1423.1 | 986.7 | 0 | 0 | 0 | 0 | ||||||
4 | Vermeulen ,EJ (Ernestus Jacobus) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1495.8 | 1070.8 | 1499.8 | 1070.8 | 0 | 0 | 0 | 0 | ||||||
5 | Goede ,K (Kari) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1456.4 | 1031.4 | 1451 | 1031.4 | 0 | 0 | 0 | 0 | ||||||
6 | Faku ,M (Maphasa) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1406.9 | 1406.9 | 1384.7 | 1406.9 | 0 | 0 | 0 | 0 | ||||||
7 | Meyambo ,U (Unathi) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1303.5 | 1728.5 | 1296.4 | 1728.5 | 0 | 0 | 0 | 0 | ||||||
8 | Manhenda ,F (Farai) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1196.4 | 1621.4 | 1195.3 | 1621.4 | 0 | 0 | 0 | 0 | ||||||
9 | Mazinyo ,M (Mpumelelo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1297 | 1722 | 1285.4 | 1722 | 0 | 0 | 0 | 0 | ||||||
10 | Malherbe ,GM (Gideon Marius) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
853 | 1278 | 862.3 | 1278 | 0 | 0 | 0 | 0 |
Norms
# | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
---|---|---|---|---|---|---|---|---|