Player Page

Roos, J (Justin)
Dob: 2011/01/27 (U14)
Gender: Male
Chess SA id: 1110099324
FIDE id:
Region: Bojanala Platina (NBR)
Citizen: RSA
Title(s):
Last active: 2024/03/16 (13 days ago)
Ratings
Official Raw Weighted Floor Highest K Games Score We S-We +/-
Current 1488.0 1464.3 1488.0 1133.7 1633.7 28 10 6.5 6.93 -0.43 -9.4
Projected new 1485.3 1454.9 1485.3 1133.7 1633.7 28

Official Raw Weighted Floor Highest K Games Score We S-We +/-
Current 1494.6 1475.1 1494.6 1137.9 1637.9 28 10 6.5 7.12 -0.62 -17.4
Projected new 1492.0 1457.7 1492.0 1137.9 1637.9 28

Official Raw Weighted Floor Highest K Games Score We S-We +/-
Current 1185.3 1173.2 1185.3 1133.7 1173.2 40 0 0.0 0.00 0.00 0.0
Projected new 1183.9 1173.2 1183.9 683.9 1183.9 40

Official Raw Weighted Floor Highest K Games Score We S-We +/-
Current 1200.0 1200.0 1200.0 700.0 1200.0 36 0 0.0 0.00 0.00 0.0
Projected new 1200.0 1200.0 1200.0 700.0 1200.0 36

Tournaments
Tournament: Bojanala Silwerrand's Rating Implosion 2024 (Bishops)
Start: 2024/03/16  End: 2024/03/16  Host: NBR  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 4.0
Main rating: 1464.3  Rating gain/loss: 6.3
Type rating: 1475.1  Rating gain/loss: 3.1
Analysis
Tournament: Schoemies' Kings & Queens 2024 (Rooks)
Start: 2024/03/02  End: 2024/03/02  Host: NBR  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 2.5
Main rating: 1464.3  Rating gain/loss: -16.3
Type rating: 1475.1  Rating gain/loss: -20.4
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 Bojanala Silwerrand's Rating Implosion 2024 (Bishops) 2024/03/16 2024/03/16 Bojanala Platina (NBR) Standard 60 0.83 5 5 4.0 1464.3 1475.1 Analysis
3 Schoemies' Kings & Queens 2024 (Rooks) 2024/03/02 2024/03/02 Bojanala Platina (NBR) Standard 60 0.83 5 5 2.5 1464.3 1475.1 Analysis
2 Bojanala Closed Chess Championships Finals 2024 (U14) 2024/02/09 2024/02/11 Bojanala Platina (NBR) Standard 120 1.00 5 5 3.0 1464.6 1477.6 Analysis
1 Bojanala Closed Chess Championships Stage 1 2024 (U14) 2024/01/27 2024/01/27 Bojanala Platina (NBR) Standard 60 0.83 5 5 3.0 1469.7 1486.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
61 Bojanala Silwerrand's Rating Implosion 2024 (Bishops) 2024/03/16 2024/03/16 Bojanala Platina (NBR) Standard 60 0.83 5 5 4.0 1464.3 1475.1 Analysis
60 Schoemies' Kings & Queens 2024 (Rooks) 2024/03/02 2024/03/02 Bojanala Platina (NBR) Standard 60 0.83 5 5 2.5 1464.3 1475.1 Analysis
59 Bojanala Closed Chess Championships Finals 2024 (U14) 2024/02/09 2024/02/11 Bojanala Platina (NBR) Standard 120 1.00 5 5 3.0 1464.6 1477.6 Analysis
58 Bojanala Closed Chess Championships Stage 1 2024 (U14) 2024/01/27 2024/01/27 Bojanala Platina (NBR) Standard 60 0.83 5 5 3.0 1469.7 1486.0 Analysis
57 2023 Cross Border Chess Championships Gaborone vs Bojanala 2023/12/14 2023/12/16 Botswana (BOT) Standard 120 1.00 5 5 3.0 1486.8 1506.2 Analysis
56 Bojanala's Merry ChessMas 2023 (Rooks) 2023/12/09 2023/12/09 Bojanala Platina (NBR) Standard 60 0.83 5 5 3.0 1486.8 1506.2 Analysis
55 West Rand vs Bojanala Inter-Regional Championships 2023 (U14) 2023/10/14 2023/10/14 West Rand (GWR) Standard 60 0.83 5 5 4.0 1458.7 1475.1 Analysis
54 Bojanala School League 2023 (Primary School Open) 2023/08/19 2023/08/19 Bojanala Platina (NBR) Rapid 40 0.70 5 5 2.0 1476.7 1200.0 Analysis
53 Bojanala's FIDE in the Sparkling Waters 2023 (Rooks) 2023/07/28 2023/07/30 Bojanala Platina (NBR) Standard 120 1.00 6 6 4.0 1488.5 1487.4 Analysis
52 Bojanala's Post-Exams 2023 (Rooks) 2023/06/24 2023/06/24 Bojanala Platina (NBR) Standard 60 0.83 5 5 5.0 1424.3 1414.3 Analysis
51 2023 South African Junior Closed Chess Championships (U12 Open) 2023/03/31 2023/04/04 Chess South Africa (CSA) Standard 120 1.00 9 9 2.0 1528.2 1519.0 Analysis
50 Schoemies Kings & Queens 2023 (Rooks) 2023/03/18 2023/03/18 Bojanala Platina (NBR) Standard 60 0.83 5 5 2.0 1570.0 1568.0 Analysis
49 One For The Ages 2023 (U14) 2023/02/18 2023/02/18 Bojanala Platina (NBR) Standard 60 0.83 5 5 4.0 1549.3 1543.6 Analysis
48 Dr. Kenneth Kaunda Saamtrek 2023 (U14) 2023/02/04 2023/02/04 Dr Kenneth Kaunda (NWP) Standard 60 0.83 5 5 5.0 1549.3 1543.6 Analysis
47 Harties Wolf Pack 2023 (Rooks) 2023/01/21 2023/01/21 Bojanala Platina (NBR) Standard 62 0.84 5 5 2.5 1587.2 1589.5 Analysis
46 2022 South African Junior Team Chess Championships (U12 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 3.5 1633.7 1637.9 Analysis
45 West Rand vs Bojanala 2022 (U12A) 2022/11/05 2022/11/05 Bojanala Platina (NBR) Standard 60 0.83 6 6 6.0 1593.0 1590.9 Analysis
44 Bojanala SAJCC Trials 2022 (U12) 2022/09/23 2022/09/23 Bojanala Platina (NBR) Standard 120 1.00 5 5 5.0 1538.0 1532.3 Analysis
43 Bojanala Chess Federation Wildcards 2022 (U12) 2022/08/20 2022/08/20 Bojanala Platina (NBR) Standard 62 0.84 5 5 5.0 1473.7 1470.8 Analysis
42 2nd One For The Ages 2022 (U12) 2022/07/30 2022/07/30 Bojanala Platina (NBR) Standard 60 0.83 5 5 4.0 1362.9 1347.0 Analysis
1234
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 20 12 1 7 12.5 62.5 106.3 1333.2 1439.4
White 11 8 1 2 8.5 77.3 231.8 1338.0 1569.8
Black 9 4 0 5 4.0 44.4 -47.2 1327.3 1280.1
Standard All 20 12 1 7 12.5 62.5 106.3 1333.2 1439.4
White 11 8 1 2 8.5 77.3 231.8 1338.0 1569.8
Black 9 4 0 5 4.0 44.4 -47.2 1327.3 1280.1
Rapid All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 324 206 12 106 212.0 65.4 131.2 1243.9 1375.1
White 161 109 8 44 113.0 70.2 171.6 1251.4 1423.0
Black 163 97 4 62 99.0 60.7 91.3 1236.5 1327.8
Standard All 319 204 12 103 210.0 65.8 134.6 1241.3 1375.8
White 158 107 8 43 111.0 70.3 172.2 1248.5 1420.6
Black 161 97 4 60 99.0 61.5 97.7 1234.2 1331.9
Rapid All 5 2 0 3 2.0 40.0 -85.0 1411.7 1326.7
White 3 2 0 1 2.0 66.7 141.7 1405.8 1547.5
Black 2 0 0 2 0.0 0.0 -425.0 1420.7 995.7
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 111092671 Van Der Berg, KW (Kai) 12 10.0 10 0 2 83.3 1434.6 283.3 1717.9 View list
2 1110099325 Nortman, WJ (Wilhelmus Johan) 11 7.0 7 0 4 63.6 1298.0 115.9 1413.9 View list
3 1110096350 Schwim, X (Xander) 9 5.0 5 0 4 55.6 1327.7 47.2 1374.9 View list
4 211093275 Byliefeldt, M (Mienke) 7 6.5 6 1 0 92.9 1408.2 364.3 1772.4 View list
5 1110097777 Britz, JD (Jakobus) 7 3.0 3 0 4 42.9 1321.4 -60.7 1260.7 View list
6 1110099323 Bester, D (Daniel) 7 2.5 2 1 4 35.7 1245.4 -121.4 1124.0 View list
7 110093302 Morkel, DJ (Douglas) 6 5.0 5 0 1 83.3 1367.7 283.3 1651.0 View list
8 1110131242 Changara, A (Adiel Tavonga) 6 4.0 4 0 2 66.7 1459.2 141.7 1600.8 View list
9 1110100437 Schwim, R (Rinus) 5 5.0 5 0 0 100.0 1256.3 425.0 1681.3 View list
10 1120099318 Weber, U (Ulrich) 5 5.0 5 0 0 100.0 1315.9 425.0 1740.9 View list
11 1110112986 Legwale, L (Lesedi) 5 4.0 4 0 1 80.0 1453.5 255.0 1708.5 View list
12 1100099556 Bantseke, B (Boikanyo) 5 3.0 3 0 2 60.0 1474.9 85.0 1559.9 View list
13 1110140037 Grobler, R (Rowan) 5 3.0 3 0 2 60.0 1486.8 85.0 1571.8 View list
14 111089655 Guneliev, AA (Adriaan) 5 1.0 1 0 4 20.0 1240.0 -255.0 985.0 View list
15 1120096779 Yang, JD (Daniel) 5 0.0 0 0 5 0.0 1370.0 -425.0 945.0 View list
16 2110096353 Janse Van Vuuren, M (Mari) 4 4.0 4 0 0 100.0 1226.3 425.0 1651.3 View list
17 210087760 Jansen Van Vuuren, L (Lourein) 4 4.0 4 0 0 100.0 1415.4 425.0 1840.4 View list
18 210086569 Combrinck, J (Janeske) 4 3.0 3 0 1 75.0 1230.6 212.5 1443.1 View list
19 211093260 Jansen Van Vuuren, M (Mari) 3 3.0 3 0 0 100.0 1458.2 425.0 1883.2 View list
20 211093462 Maritz, L (Lienka) 3 3.0 3 0 0 100.0 1247.6 425.0 1672.6 View list