PLAYER PAGE
Personal

Viljoen, J (Johandre)
Chess SA id
1110158449FIDE id
?Date of birth
2011-01-18 (U16)Gender
MaleRegion
West Rand (GWR)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-09-06Personal details last changed
1900-01-01Junior GPX Games
40Junior GPX Points
1381.1Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
Rating | 1402 | 1400.7 | 1200 | 1200 |
Raw rating | 1402 | 1400.7 | 1200 | 1200 |
Weighted rating | 1322.7 | 1328.2 | 1200 | 1200 |
Weighted performance | 1373 | 1374.2 | 0 | 0 |
Floor | 912.9 | 915.1 | 700 | 700 |
K-factor | 32 | 32 | 36 | 36 |
Min/Max rating change allowed | 124.4 | 124.6 | 165.8 | 165.8 |
Highest rating | 1412.92025-09-01 | 1415.12025-09-01 | 12002018-10-01 | 12002018-10-01 |
Highest raw rating | 1412.92025-09-01 | 1415.12025-09-01 | 12002024-02-01 | 12002024-02-01 |
Highest weighted rating | 1322.72025-09-30 | 1328.22025-09-30 | 12002018-10-01 | 12002018-10-01 |
Highest weighted performance | 1411.62025-06-01 | 1409.72025-09-01 | 12002024-02-01 | 12002024-02-01 |
Prediction | ||||
---|---|---|---|---|
Item | Main | Standard | Rapid | Blitz |
Rating change | 0 | 0 | 0 | 0 |
New rating | 1402 | 1400.7 | 1200 | 1200 |
Analysis | ||||
Rating | 1402 | 1400.7 | 1200 | 1200 |
Raw rating | 1402 | 1400.7 | 1200 | 1200 |
Weighted rating | 1322.7 | 1328.2 | 1200 | |
Weighted performance | 1373 | 1374.2 | 0 | |
K-factor | 32 | 32 | 36 | 36 |
Floor | 912.9 | 915.1 | 700 | 700 |
Max/Min rating change allowed | 124.4 | 124.6 | 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 | 1402 | 1400.7 | 1200 | 1200 |
New weighted rating | 1331.8 | 1336.7 | 1200 | 1200 |
New weighted performance | 1372.5 | 1373.7 | 0 | 0 |
Temp new rating | 1402 | 1400.7 | 1200 | 1200 |
Temp new rating +/- | 0 | 0 | 0 | 0 |
Final new rating +/- | 0 | 0 | 0 | 0 |
New rating | 1402 | 1400.7 | 1200 | 1200 |
New K-factor | 32 | 32 | 36 | 36 |
New floor | 912.9 | 915.1 | 700 | 700 |
Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
0 | 0 | 0 | 0 | |
40 | 40 | 0 | 0 | |
10 | 10 | 0 | 0 | |
5 | 5 | 0 | 0 | |
0 | 0 | 0 | 0 | |
0 | 0 | 0 | 0 | |
History | 55 | 55 | 0 | 0 |
Games since | |||||||||||||||||
Main50 | Standard50 | Rapid0 | Blitz0 | ||||||||||||||
Gender | Male | ||||||||||||||||
Age group | U16 | ||||||||||||||||
Region | West Rand (GWR) | ||||||||||||||||
Province | Gauteng (GT) | ||||||||||||||||
Main | RSA | Province | Region | ||||||||||||||
Overall | 2142 | 754 | 59 | ||||||||||||||
Male | 1764 | 613 | 44 | ||||||||||||||
U16 | 323 | 106 | 6 | ||||||||||||||
U16 Male | 249 | 77 | 2 | ||||||||||||||
Standard | RSA | Province | Region | ||||||||||||||
Overall | 2042 | 767 | 67 | ||||||||||||||
Male | 1671 | 623 | 51 | ||||||||||||||
U16 | 308 | 107 | 5 | ||||||||||||||
U16 Male | 241 | 81 | 2 | ||||||||||||||
Rapid | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U16 | -1 | -1 | -1 | ||||||||||||||
U16 Male | -1 | -1 | -1 | ||||||||||||||
Blitz | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U16 | -1 | -1 | -1 | ||||||||||||||
U16 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 | 40 | 24 | 60 | 85 | 1321.2 | 1406.2 |
Standard | 40 | 24 | 60 | 85 | 1321.2 | 1406.2 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
History | ||||||
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 55 | 34 | 61.82 | 100.5 | 1293.3 | 1393.8 |
Standard | 55 | 34 | 61.82 | 100.5 | 1293.3 | 1393.8 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
Date | Main | Standard | Rapid | Blitz |
2025-09-30 | 1402 | 1400.7 | 1200 | 1200 |
2025-09-01 | 1412.9 | 1415.1 | 1200 | 1200 |
2025-08-01 | 1391.7 | 1387.2 | 1200 | 1200 |
2025-07-01 | 1401.9 | 1398.5 | 1200 | 1200 |
2025-06-01 | 1411.6 | 1409.3 | 1200 | 1200 |
2025-05-01 | 1362.4 | 1359.6 | 1200 | 1200 |
2025-04-01 | 1300.8 | 1314.1 | 1200 | 1200 |
2025-03-01 | 1280.8 | 1291.7 | 1200 | 1200 |
2025-02-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2025-01-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2024-12-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2024-11-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2024-10-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2024-09-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2024-08-01 | 1276.2 | 1289.6 | 1200 | 1200 |
2024-07-01 | 1232.9 | 1240.3 | 1200 | 1200 |
2024-06-01 | 1232.9 | 1240.3 | 1200 | 1200 |
2024-08-01 | 1222.1 | 1226.6 | 1200 | 1200 |
2024-04-01 | 1222.1 | 1226.6 | 1200 | 1200 |
2024-03-01 | 1222.1 | 1226.6 | 1200 | 1200 |
2024-02-01 | 1222.1 | 1226.6 | 1200 | 1200 |
2024-01-01 | 1222.1 | 1226.6 | 1200 | 1200 |
2023-12-01 | 1222.1 | 1226.6 | 1200 | 1200 |
2023-11-01 | 1222.1 | 1226.6 | 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 | West Rand Trials 2025 (U16) | 2025-09-06 | 2025-09-06 | Standard | West Rand (GWR) | 5 | 5 | 2.5 | Yes | Analysis |
2 | West Rand Women's Day Open 2025 (Rooks) | 2025-08-09 | 2025-08-09 | Standard | West Rand (GWR) | 5 | 5 | 3.5 | Yes | Analysis |
3 | 2025 D2 Schools League Finals (U15) | 2025-07-26 | 2025-07-26 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
4 | West Rand Open 2.0 2025 (Rooks) | 2025-06-07 | 2025-06-07 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
5 | 2025 D2 Schools Individuals (U15 Open) | 2025-05-10 | 2025-05-10 | Standard | West Rand (GWR) | 5 | 5 | 4 | Yes | Analysis |
6 | FIDE in The West 2025 (Rooks) | 2025-04-12 | 2025-04-12 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
7 | West Rand Juniors 2025 (U16) | 2025-03-08 | 2025-03-08 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
8 | 2025 West Rand Open (Rooks) | 2025-02-08 | 2025-02-08 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | West Rand Trials 2025 (U16) | 2025-09-06 | 2025-09-06 | Standard | West Rand (GWR) | 5 | 5 | 2.5 | Yes | Analysis |
2 | West Rand Women's Day Open 2025 (Rooks) | 2025-08-09 | 2025-08-09 | Standard | West Rand (GWR) | 5 | 5 | 3.5 | Yes | Analysis |
3 | 2025 D2 Schools League Finals (U15) | 2025-07-26 | 2025-07-26 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
4 | West Rand Open 2.0 2025 (Rooks) | 2025-06-07 | 2025-06-07 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
5 | 2025 D2 Schools Individuals (U15 Open) | 2025-05-10 | 2025-05-10 | Standard | West Rand (GWR) | 5 | 5 | 4 | Yes | Analysis |
6 | FIDE in The West 2025 (Rooks) | 2025-04-12 | 2025-04-12 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
7 | West Rand Juniors 2025 (U16) | 2025-03-08 | 2025-03-08 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
8 | 2025 West Rand Open (Rooks) | 2025-02-08 | 2025-02-08 | Standard | West Rand (GWR) | 5 | 5 | 2 | Yes | Analysis |
9 | D2 School League Finals 2024 (U13) | 2024-07-20 | 2024-07-20 | Standard | West Rand (GWR) | 5 | 5 | 4 | Yes | Analysis |
10 | 2024 D2 Schools Individuals (U13 Boys) | 2024-05-04 | 2024-05-04 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
11 | D2 School League Finals 2023 (U13) | 2023-07-22 | 2023-07-22 | Standard | West Rand (GWR) | 5 | 5 | 3 | Yes | Analysis |
Top 3 Streaks
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 4 | TournamentWest Rand Women's Day Open 2025 | TournamentWest Rand Women's Day Open 2025 | ||||||
date2025-08-09 | rnd1 | typeStandard | result0.5 | date2025-08-09 | rnd4 | typeStandard | result1 | ||
OpponentMagobongo, E (Emihle) | OpponentLekgoba, R (Rethabile Ellen) | ||||||||
2 | 4 | TournamentD2 School League Finals 2024 | Tournament2025 West Rand Open | ||||||
date2024-07-20 | rnd3 | typeStandard | result1 | date2025-02-08 | rnd1 | typeStandard | result1 | ||
OpponentMagagula, S (Siyabonga) | OpponentFourie, T (Theo) | ||||||||
3 | 3 | Tournament2025 D2 Schools League Finals | Tournament2025 D2 Schools League Finals | ||||||
date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd4 | typeStandard | result1 | ||
OpponentMothupi, R (Reotshepile) | OpponentMoruledi, N (Naledi) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 4 | TournamentWest Rand Women's Day Open 2025 | TournamentWest Rand Women's Day Open 2025 | ||||||
date2025-08-09 | rnd1 | typeStandard | result0.5 | date2025-08-09 | rnd4 | typeStandard | result1 | ||
OpponentMagobongo, E (Emihle) | OpponentLekgoba, R (Rethabile Ellen) | ||||||||
2 | 4 | TournamentD2 School League Finals 2024 | Tournament2025 West Rand Open | ||||||
date2024-07-20 | rnd3 | typeStandard | result1 | date2025-02-08 | rnd1 | typeStandard | result1 | ||
OpponentMagagula, S (Siyabonga) | OpponentFourie, T (Theo) | ||||||||
3 | 3 | Tournament2025 D2 Schools League Finals | Tournament2025 D2 Schools League Finals | ||||||
date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd4 | typeStandard | result1 | ||
OpponentMothupi, R (Reotshepile) | OpponentMoruledi, N (Naledi) |
# | Games | Start | End |
---|
# | Games | Start | End |
---|
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 4 | TournamentD2 School League Finals 2024 | Tournament2025 West Rand Open | ||||||
date2024-07-20 | rnd3 | typeStandard | result1 | date2025-02-08 | rnd1 | typeStandard | result1 | ||
OpponentMagagula, S (Siyabonga) | OpponentFourie, T (Theo) | ||||||||
2 | 3 | TournamentWest Rand Women's Day Open 2025 | TournamentWest Rand Women's Day Open 2025 | ||||||
date2025-08-09 | rnd2 | typeStandard | result1 | date2025-08-09 | rnd4 | typeStandard | result1 | ||
OpponentArlow, J (Jaden) | OpponentLekgoba, R (Rethabile Ellen) | ||||||||
3 | 3 | Tournament2025 D2 Schools League Finals | Tournament2025 D2 Schools League Finals | ||||||
date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd4 | typeStandard | result1 | ||
OpponentMothupi, R (Reotshepile) | OpponentMoruledi, N (Naledi) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 4 | TournamentD2 School League Finals 2024 | Tournament2025 West Rand Open | ||||||
date2024-07-20 | rnd3 | typeStandard | result1 | date2025-02-08 | rnd1 | typeStandard | result1 | ||
OpponentMagagula, S (Siyabonga) | OpponentFourie, T (Theo) | ||||||||
2 | 3 | TournamentWest Rand Women's Day Open 2025 | TournamentWest Rand Women's Day Open 2025 | ||||||
date2025-08-09 | rnd2 | typeStandard | result1 | date2025-08-09 | rnd4 | typeStandard | result1 | ||
OpponentArlow, J (Jaden) | OpponentLekgoba, R (Rethabile Ellen) | ||||||||
3 | 3 | Tournament2025 D2 Schools League Finals | Tournament2025 D2 Schools League Finals | ||||||
date2025-07-26 | rnd2 | typeStandard | result1 | date2025-07-26 | rnd4 | typeStandard | result1 | ||
OpponentMothupi, R (Reotshepile) | OpponentMoruledi, N (Naledi) |
# | 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 | Mtsweni ,T (Thapelo) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1181.8 | 1606.8 | 1185.8 | 1606.8 | 0 | 0 | 0 | 0 | ||||||
2 | Marx ,EF (Ethen Frederik) | 2 | 1.5 | 212.5 | 2 | 1.5 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
1242.2 | 1454.7 | 1245.8 | 1454.7 | 0 | 0 | 0 | 0 | ||||||
3 | Lekgoba ,R (Rethabile Ellen) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1454.4 | 1879.4 | 1452.8 | 1879.4 | 0 | 0 | 0 | 0 | ||||||
4 | Magagula ,S (Siyabonga) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1206.3 | 1631.3 | 1207.2 | 1631.3 | 0 | 0 | 0 | 0 | ||||||
5 | Lokwe ,S (Simthandile) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1463.6 | 1888.6 | 1466.8 | 1888.6 | 0 | 0 | 0 | 0 | ||||||
6 | Perry-Fisher ,IE (Iain Eric) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1410 | 985 | 1408.5 | 985 | 0 | 0 | 0 | 0 | ||||||
7 | Fourie ,T (Theo) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1424 | 1849 | 1415.4 | 1849 | 0 | 0 | 0 | 0 | ||||||
8 | Makhubalo ,I (Inam) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1149.9 | 1574.9 | 1139.6 | 1574.9 | 0 | 0 | 0 | 0 | ||||||
9 | Maseko ,T (Tshiamo) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1420.5 | 995.5 | 1415.1 | 995.5 | 0 | 0 | 0 | 0 | ||||||
10 | Maseko ,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 |
---|---|---|---|---|---|---|---|---|