PLAYER PAGE
Personal

Roos, E (Ewan)
Chess SA id
1130134053FIDE id
?Date of birth
2013-06-07 (U14)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-08-15Personal details last changed
1900-01-01Junior GPX Games
34Junior GPX Points
1262.8Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
Rating | 1385.9 | 1377 | 1200 | 1200 |
Raw rating | 1356.6 | 1345 | 1200 | 1200 |
Weighted rating | 1385.9 | 1377 | 1200 | 1200 |
Weighted performance | 1219.1 | 1218.2 | 0 | 0 |
Floor | 979.5 | 976.8 | 700 | 700 |
K-factor | 32 | 32 | 36 | 36 |
Min/Max rating change allowed | 132.7 | 134.9 | 165.8 | 165.8 |
Highest rating | 14952024-09-01 | 1490.72024-09-01 | 12002018-10-01 | 12002018-10-01 |
Highest raw rating | 1479.52024-10-01 | 1476.82024-10-01 | 12002024-02-01 | 12002024-02-01 |
Highest weighted rating | 1385.32025-09-01 | 1376.72025-09-01 | 12002018-10-01 | 12002018-10-01 |
Highest weighted performance | 14952024-09-01 | 1490.72024-09-01 | 12002024-02-01 | 12002024-02-01 |
Prediction | ||||
---|---|---|---|---|
Item | Main | Standard | Rapid | Blitz |
Rating change | 0.1 | -0.2 | 0 | 0 |
New rating | 1386 | 1376.9 | 1200 | 1200 |
Analysis | ||||
Rating | 1385.9 | 1377 | 1200 | 1200 |
Raw rating | 1356.6 | 1345 | 1200 | 1200 |
Weighted rating | 1385.9 | 1377 | 1200 | |
Weighted performance | 1219.1 | 1218.2 | 0 | |
K-factor | 32 | 32 | 36 | 36 |
Floor | 979.5 | 976.8 | 700 | 700 |
Max/Min rating change allowed | 132.7 | 134.9 | 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 | 1356.6 | 1345 | 1200 | 1200 |
New weighted rating | 1386 | 1376.9 | 1200 | 1200 |
New weighted performance | 1218.7 | 1217.8 | 0 | 0 |
Temp new rating | 1386 | 1376.9 | 1200 | 1200 |
Temp new rating +/- | 0.1 | -0.2 | 0 | 0 |
Final new rating +/- | 0.1 | -0.2 | 0 | 0 |
New rating | 1386 | 1376.9 | 1200 | 1200 |
New K-factor | 32 | 32 | 36 | 36 |
New floor | 979.5 | 976.8 | 700 | 700 |
Item | Main | Standard | Rapid | Blitz |
---|---|---|---|---|
0 | 0 | 0 | 0 | |
24 | 24 | 0 | 0 | |
57 | 57 | 0 | 0 | |
32 | 32 | 0 | 0 | |
36 | 36 | 0 | 0 | |
26 | 26 | 0 | 0 | |
History | 175 | 175 | 0 | 0 |
Games since | |||||||||||||||||
Main85 | Standard85 | Rapid0 | Blitz0 | ||||||||||||||
Gender | Male | ||||||||||||||||
Age group | U14 | ||||||||||||||||
Region | Tshwane (GTP) | ||||||||||||||||
Province | Gauteng (GT) | ||||||||||||||||
Main | RSA | Province | Region | ||||||||||||||
Overall | 2323 | 811 | 290 | ||||||||||||||
Male | 1898 | 659 | 228 | ||||||||||||||
U14 | 383 | 123 | 41 | ||||||||||||||
U14 Male | 283 | 91 | 28 | ||||||||||||||
Standard | RSA | Province | Region | ||||||||||||||
Overall | 2291 | 851 | 325 | ||||||||||||||
Male | 1862 | 692 | 256 | ||||||||||||||
U14 | 389 | 135 | 48 | ||||||||||||||
U14 Male | 288 | 99 | 32 | ||||||||||||||
Rapid | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U14 | -1 | -1 | -1 | ||||||||||||||
U14 Male | -1 | -1 | -1 | ||||||||||||||
Blitz | RSA | Province | Region | ||||||||||||||
Overall | -1 | -1 | -1 | ||||||||||||||
Male | -1 | -1 | -1 | ||||||||||||||
U14 | -1 | -1 | -1 | ||||||||||||||
U14 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 | 24 | 10 | 41.67 | -70.8 | 1341.4 | 1270.5 |
Standard | 24 | 10 | 41.67 | -70.8 | 1341.4 | 1270.5 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
History | ||||||
Games | Score | % | Dp | AvgOpp | Performance | |
Main | 175 | 102 | 58.29 | 70.4 | 1246.1 | 1316.5 |
Standard | 175 | 102 | 58.29 | 70.4 | 1246.1 | 1316.5 |
Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
Date | Main | Standard | Rapid | Blitz |
2025-09-30 | 1356.6 | 1345 | 1200 | 1200 |
2025-09-01 | 1356.6 | 1345 | 1200 | 1200 |
2025-08-01 | 1383.9 | 1375.6 | 1200 | 1200 |
2025-07-01 | 1380.2 | 1371.9 | 1200 | 1200 |
2025-06-01 | 1376.4 | 1367.8 | 1200 | 1200 |
2025-05-01 | 1376.4 | 1363.5 | 1200 | 1200 |
2025-04-01 | 1376.4 | 1360.5 | 1200 | 1200 |
2025-03-01 | 1385.8 | 1367.8 | 1200 | 1200 |
2025-02-01 | 1456.2 | 1451.2 | 1200 | 1200 |
2025-01-01 | 1456.2 | 1451.2 | 1200 | 1200 |
2024-12-01 | 1464.6 | 1458.6 | 1200 | 1200 |
2024-11-01 | 1464.6 | 1458.6 | 1200 | 1200 |
2024-10-01 | 1479.5 | 1476.8 | 1200 | 1200 |
2024-09-01 | 1437.6 | 1432.3 | 1200 | 1200 |
2024-08-01 | 1401.9 | 1397.3 | 1200 | 1200 |
2024-07-01 | 1401.9 | 1397.3 | 1200 | 1200 |
2024-06-01 | 1358 | 1353.4 | 1200 | 1200 |
2024-08-01 | 1291.6 | 1289.8 | 1200 | 1200 |
2024-04-01 | 1235.4 | 1227.5 | 1200 | 1200 |
2024-03-01 | 1235.4 | 1227.5 | 1200 | 1200 |
2024-02-01 | 1232.7 | 1222.1 | 1200 | 1200 |
2024-01-01 | 1207 | 1196.5 | 1200 | 1200 |
2023-12-01 | 1207 | 1196.5 | 1200 | 1200 |
2023-11-01 | 1207 | 1196.5 | 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 Tshwane South School District CLOSED League Championship (U13A) | 2025-08-15 | 2025-08-15 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
2 | Lubowski Open 2025 (D2) | 2025-03-21 | 2025-03-22 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
3 | 2025 Chris Greyling Open Chess Tournament (C) | 2025-03-15 | 2025-03-15 | Standard | Tshwane (GTP) | 5 | 5 | 1.5 | Yes | Analysis |
4 | 2025 KSNG Open (C) | 2025-02-22 | 2025-02-22 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
5 | Constantiapark Open 2025 (C) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
# | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
---|---|---|---|---|---|---|---|---|---|---|
1 | 2025 Tshwane South School District CLOSED League Championship (U13A) | 2025-08-15 | 2025-08-15 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
2 | Lubowski Open 2025 (D2) | 2025-03-21 | 2025-03-22 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
3 | 2025 Chris Greyling Open Chess Tournament (C) | 2025-03-15 | 2025-03-15 | Standard | Tshwane (GTP) | 5 | 5 | 1.5 | Yes | Analysis |
4 | 2025 KSNG Open (C) | 2025-02-22 | 2025-02-22 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
5 | Constantiapark Open 2025 (C) | 2025-02-15 | 2025-02-15 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
6 | Gauteng Inter-Region at UJ 2024 (U12 Open) | 2024-12-07 | 2024-12-08 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 3 | Yes | Analysis |
7 | Gauteng Top Schools 2024 (U11 Open) | 2024-10-04 | 2024-10-04 | Standard | Ekurhuleni (GE) | 5 | 5 | 3 | Yes | Analysis |
8 | 2024 Etienne Lewis (U12) | 2024-08-30 | 2024-09-01 | Standard | Tshwane (GTP) | 7 | 7 | 5.5 | Yes | Analysis |
9 | Gauteng Schools Individuals Finals 2024 (U11 Boys) | 2024-08-16 | 2024-08-16 | Standard | Ekurhuleni (GE) | 5 | 5 | 3 | Yes | Analysis |
10 | D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) | 2024-08-03 | 2024-08-03 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
11 | 2024 Elise Steenkamp Open Chess Tournament (Rooks) | 2024-06-15 | 2024-06-15 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
12 | 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) | 2024-05-11 | 2024-05-11 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
13 | 2024 KSNG CHess Academy Open Tournament (D2) | 2024-04-06 | 2024-04-06 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
14 | 2024 Tshwane Chess AHS Open Chess Tournament (C1) | 2024-02-24 | 2024-02-24 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
15 | 2024 Tshwane Chess OPEN Registration Tournament (C2) | 2024-01-27 | 2024-01-27 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
16 | 2024 Gauteng Inter-Region Chess Championship (U12C) | 2024-01-13 | 2024-01-14 | Standard | Tshwane (GTP) | 5 | 5 | 4.5 | Yes | Analysis |
17 | Lardies Open Tournament 2023 (C) | 2023-10-28 | 2023-10-28 | Standard | Tshwane (GTP) | 5 | 4 | 1 | Yes | Analysis |
18 | 2023 Etienne Lewis Closed Tournament (U12) | 2023-08-25 | 2023-08-27 | Standard | Tshwane (GTP) | 7 | 5 | 3.5 | Yes | Analysis |
19 | 2023 Tshwane South School District CLOSED League Championship (U11) | 2023-07-29 | 2023-07-29 | Standard | Tshwane (GTP) | 5 | 4 | 2 | Yes | Analysis |
20 | 2023 Lubowski Open Tournament (C) | 2023-06-24 | 2023-06-25 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
21 | 2023 Tshwane South School District CLOSED Individual Championships (U11 Open) | 2023-04-22 | 2023-04-22 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
22 | Chris Greyling Open Tournament 2023 (C) | 2023-03-21 | 2023-03-21 | Standard | Tshwane (GTP) | 5 | 5 | 1.5 | Yes | Analysis |
23 | Tuks Junior Developmental Chess Tournament 2023 (Blue) | 2023-03-18 | 2023-03-18 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
24 | 2022 Gauteng Schools Team Championships (U9 Open) | 2022-08-27 | 2022-08-27 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
25 | D4 Play Offs 2022 (U9) | 2022-07-30 | 2022-07-30 | Standard | Tshwane (GTP) | 5 | 5 | 5 | Yes | Analysis |
26 | 2022 Menlo Open Tournament (D) | 2022-07-23 | 2022-07-23 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
27 | Tuks Junior Chess Club Developmental Tournament 2022 (Red) | 2022-06-17 | 2022-06-17 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
28 | 2022 Lubowski Open Tournament (D) | 2022-04-09 | 2022-04-10 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
29 | 2022 Chris Greyling Open (D) | 2022-03-12 | 2022-03-12 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
30 | 2022 Gauteng Interregion (U10 Open) | 2022-02-26 | 2022-02-26 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
31 | 2022 Tshwane Chess Open Registration Tournament (D1) | 2022-01-29 | 2022-01-29 | Standard | Tshwane (GTP) | 5 | 1 | 1 | Yes | Analysis |
32 | 2021 Lardies Ope (E) | 2021-10-30 | 2021-10-30 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
33 | 2021 Etienne Lewis Closed Trials (U10 Open) | 2021-09-24 | 2021-09-26 | Standard | Nelson Mandela Bay (ENM) | 7 | 6 | 3 | Yes | Analysis |
34 | 2021 Alekhine Open (E) | 2021-08-14 | 2021-08-15 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
35 | 2021 Chris Greyling Open Tournament (E) | 2021-05-08 | 2021-05-08 | Standard | Tshwane (GTP) | 5 | 5 | 4 | Yes | Analysis |
36 | 2021 Blou Bul Tournament (E) | 2021-04-10 | 2021-04-10 | Standard | Mangaung (FMB) | 5 | 5 | 3 | Yes | Analysis |
Top 3 Streaks
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentD4 Play Offs 2022 | Tournament2022 Gauteng Schools Team Championships | ||||||
date2022-07-30 | rnd1 | typeStandard | result1 | date2022-08-27 | rnd2 | typeStandard | result1 | ||
OpponentOttermann, E (Erik) | OpponentOpperman, N (Naude) | ||||||||
2 | 5 | TournamentGauteng Schools Individuals Finals 2024 | Tournament2024 Etienne Lewis | ||||||
date2024-08-16 | rnd5 | typeStandard | result1 | date2024-08-31 | rnd4 | typeStandard | result1 | ||
OpponentPieters, I (Imrich) | OpponentTan, H (Herman Qiyuan) | ||||||||
3 | 5 | TournamentD4 Tshwane South District Schools Teams Chess Tournament 2024 | TournamentGauteng Schools Individuals Finals 2024 | ||||||
date2024-08-03 | rnd3 | typeStandard | result1 | date2024-08-16 | rnd2 | typeStandard | result1 | ||
OpponentVan Reenen, C (Connor) | OpponentMampana, N (Ntokozo) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentD4 Play Offs 2022 | Tournament2022 Gauteng Schools Team Championships | ||||||
date2022-07-30 | rnd1 | typeStandard | result1 | date2022-08-27 | rnd2 | typeStandard | result1 | ||
OpponentOttermann, E (Erik) | OpponentOpperman, N (Naude) | ||||||||
2 | 5 | TournamentGauteng Schools Individuals Finals 2024 | Tournament2024 Etienne Lewis | ||||||
date2024-08-16 | rnd5 | typeStandard | result1 | date2024-08-31 | rnd4 | typeStandard | result1 | ||
OpponentPieters, I (Imrich) | OpponentTan, H (Herman Qiyuan) | ||||||||
3 | 5 | TournamentD4 Tshwane South District Schools Teams Chess Tournament 2024 | TournamentGauteng Schools Individuals Finals 2024 | ||||||
date2024-08-03 | rnd3 | typeStandard | result1 | date2024-08-16 | rnd2 | typeStandard | result1 | ||
OpponentVan Reenen, C (Connor) | OpponentMampana, N (Ntokozo) |
# | Games | Start | End |
---|
# | Games | Start | End |
---|
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentD4 Play Offs 2022 | Tournament2022 Gauteng Schools Team Championships | ||||||
date2022-07-30 | rnd1 | typeStandard | result1 | date2022-08-27 | rnd2 | typeStandard | result1 | ||
OpponentOttermann, E (Erik) | OpponentOpperman, N (Naude) | ||||||||
2 | 5 | TournamentD4 Tshwane South District Schools Teams Chess Tournament 2024 | TournamentGauteng Schools Individuals Finals 2024 | ||||||
date2024-08-03 | rnd3 | typeStandard | result1 | date2024-08-16 | rnd2 | typeStandard | result1 | ||
OpponentVan Reenen, C (Connor) | OpponentMampana, N (Ntokozo) | ||||||||
3 | 4 | Tournament2024 Etienne Lewis | TournamentGauteng Top Schools 2024 | ||||||
date2024-09-01 | rnd6 | typeStandard | result1 | date2024-10-04 | rnd2 | typeStandard | result1 | ||
OpponentBoshoff, M (Milah) | OpponentSibanda, B (Blessing) |
# | Games | Start | End | ||||||
---|---|---|---|---|---|---|---|---|---|
1 | 7 | TournamentD4 Play Offs 2022 | Tournament2022 Gauteng Schools Team Championships | ||||||
date2022-07-30 | rnd1 | typeStandard | result1 | date2022-08-27 | rnd2 | typeStandard | result1 | ||
OpponentOttermann, E (Erik) | OpponentOpperman, N (Naude) | ||||||||
2 | 5 | TournamentD4 Tshwane South District Schools Teams Chess Tournament 2024 | TournamentGauteng Schools Individuals Finals 2024 | ||||||
date2024-08-03 | rnd3 | typeStandard | result1 | date2024-08-16 | rnd2 | typeStandard | result1 | ||
OpponentVan Reenen, C (Connor) | OpponentMampana, N (Ntokozo) | ||||||||
3 | 4 | Tournament2024 Etienne Lewis | TournamentGauteng Top Schools 2024 | ||||||
date2024-09-01 | rnd6 | typeStandard | result1 | date2024-10-04 | rnd2 | typeStandard | result1 | ||
OpponentBoshoff, M (Milah) | OpponentSibanda, B (Blessing) |
# | 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 | Botha ,L (Logan) | 5 | 3 | 85 | 5 | 3 | 85 | 0 | 0 | 0 | 0 | 0 | 0 |
1237.2 | 1322.2 | 1236.1 | 1322.2 | 0 | 0 | 0 | 0 | ||||||
2 | Buchner ,E (Emil) | 4 | 3 | 212.5 | 4 | 3 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
1187.5 | 1400 | 1172.9 | 1400 | 0 | 0 | 0 | 0 | ||||||
3 | Padayachy ,V (Vidya) | 4 | 2 | 0 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1156.9 | 1156.9 | 1137.4 | 1156.9 | 0 | 0 | 0 | 0 | ||||||
4 | De Bruin ,H (Hanno) | 3 | 3 | 425 | 3 | 3 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1164.2 | 1589.2 | 1155.5 | 1589.2 | 0 | 0 | 0 | 0 | ||||||
5 | Ottermann ,E (Erik) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1150.2 | 1150.2 | 1157.4 | 1150.2 | 0 | 0 | 0 | 0 | ||||||
6 | Kruger ,B (Brenden) | 2 | 1.5 | 212.5 | 2 | 1.5 | 212.5 | 0 | 0 | 0 | 0 | 0 | 0 |
1137.2 | 1349.7 | 1139.8 | 1349.7 | 0 | 0 | 0 | 0 | ||||||
7 | Botha ,L (Lincke) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
1192.1 | 1617.1 | 1189.9 | 1617.1 | 0 | 0 | 0 | 0 | ||||||
8 | Maponya ,W (Warona) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1456.1 | 1031.1 | 1451.8 | 1031.1 | 0 | 0 | 0 | 0 | ||||||
9 | Mann ,I (Iowan) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1587.9 | 1162.9 | 1585.5 | 1162.9 | 0 | 0 | 0 | 0 | ||||||
10 | Ndebele ,AT (Akhumzi Thandolwenkosi) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
1214.2 | 789.2 | 1216.3 | 789.2 | 0 | 0 | 0 | 0 |
Norms
# | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
---|---|---|---|---|---|---|---|---|