Player Page

Bosman, J (Johan)
Dob: 2012/01/26 (U14)
Gender: Male
Chess SA id: 1120116463
FIDE id:
Region: Ekurhuleni (GE)
Citizen: RSA
Title(s):
Last active: 2024/03/09 (68 days ago)
Ratings
Raw rating=Current rating, Weighted rating (WR)Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Curent Raw rating1326.8
Curent Weighted rating1352.2
Curent Weighted performance1219.6
Current official/published rating (highest between Raw, WR and WP)1352.2
Current floor (min rating allowed)934.9
Current highest rating achieved1434.9
Current K-factor32
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±138.4
Current Raw change used (final)0.0
Projected new Raw rating1326.8
Projected new Weighed rating1349.9
Projected new Weighted performance1219.6
Projected new official/published rating (highest between new Raw, new WR and new WP)1349.9
Projected effective change (new Official - current Official)-2.3
Projected new highest rating1434.9
Projected new floor934.9
Projected new K-facor32
Raw rating=Current rating, Weighted rating (WR)Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Curent Raw rating1288.9
Curent Weighted rating1328.9
Curent Weighted performance1154.0
Current official/published rating (highest between Raw, WR and WP)1328.9
Current floor (min rating allowed)890.1
Current highest rating achieved1390.1
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±146.1
Current Raw change used (final)0.0
Projected new Raw rating1288.9
Projected new Weighed rating1325.9
Projected new Weighted performance1154.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1325.9
Projected effective change (new Official - current Official)-3.1
Projected new highest rating1390.1
Projected new floor890.1
Projected new K-facor36
Raw rating=Current rating, Weighted rating (WR)Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Curent Raw rating1347.0
Curent Weighted rating1323.8
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1347.0
Current floor (min rating allowed)847.0
Current highest rating achieved1347.0
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±134.5
Current Raw change used (final)0.0
Projected new Raw rating1347.0
Projected new Weighed rating1325.8
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1347.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1347.0
Projected new floor847.0
Projected new K-facor36
Raw rating=Current rating, Weighted rating (WR)Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Curent Raw rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)847.0
Current highest rating achieved1200.0
Current K-factor36
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1200.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1200.0
Projected new floor847.0
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
3 Benoni Primary School Cluster Individuals 2024 (U13 Boys) 2024/03/09 2024/03/09 Ekurhuleni (GE) Rapid 30 0.60 5 5 4.0 1308.2 1313.9 Analysis
2 Laerskool Northmead Proewe 2024 (U13) 2024/02/10 2024/02/10 Ekurhuleni (GE) Rapid 30 0.60 5 5 3.0 1311.7 1320.0 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U12A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 0.0 1381.5 1371.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
21 Benoni Primary School Cluster Individuals 2024 (U13 Boys) 2024/03/09 2024/03/09 Ekurhuleni (GE) Rapid 30 0.60 5 5 4.0 1308.2 1313.9 Analysis
20 Laerskool Northmead Proewe 2024 (U13) 2024/02/10 2024/02/10 Ekurhuleni (GE) Rapid 30 0.60 5 5 3.0 1311.7 1320.0 Analysis
19 2024 Gauteng Inter-Region Chess Championship (U12A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 0.0 1381.5 1371.0 Analysis
18 2023 Ekurhuleni North District Schools Finals (U11) 2023/07/29 2023/07/29 Ekurhuleni (GE) Standard 60 0.83 5 4 3.0 1365.3 1346.2 Analysis
17 Ekurhuleni Trials 2 2023 (U12) 2023/04/22 2023/04/22 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1346.7 1317.8 Analysis
16 Ekhuruleni Chess Trials 1 2023 (U12) 2023/03/25 2023/03/25 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1321.2 1275.3 Analysis
15 ACB Tournament 2022 (B) 2022/10/08 2022/10/08 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1340.1 1288.3 Analysis
14 ACB Tournament 2022 (A) 2022/10/07 2022/10/08 Ekurhuleni (GE) Standard 90 0.94 5 0 0.0 1340.1 1288.3 Analysis
13 Ekurhuleni Chess Springs Club Open 2022 (D) 2022/09/03 2022/09/03 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1371.4 1321.4 Analysis
12 Ekurhuleni-North Schools Teams 2022 (U11) 2022/08/06 2022/08/06 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1417.1 1376.8 Analysis
11 2022 Gauteng Schools Individual Chess Championship (U11 Boys) 2022/06/18 2022/06/18 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1434.9 1390.1 Analysis
10 RMS Swiss For Rating of Players 2022 (U11) 2022/05/28 2022/05/28 Ekurhuleni (GE) Rapid 30 0.60 7 6 6.0 1331.8 1200.0 Analysis
9 Ekurhuleni-North Schools Finals Indiv 2022 (U11 Boys) 2022/05/13 2022/05/13 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1331.8 1330.6 Analysis
8 Ekurhuleni Trials 1 2022 (U12) 2022/04/23 2022/04/23 Ekurhuleni (GE) Standard 62 0.84 5 5 4.0 1215.5 1217.7 Analysis
7 South African Junior Closed Chess Championships 2022 (U10 Open) 2022/03/28 2022/04/02 Chess South Africa (CSA) Standard 120 1.00 11 11 5.0 1215.5 1217.7 Analysis
6 2022 Gauteng Interregion (U10 Open) 2022/02/26 2022/02/26 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1172.2 1165.1 Analysis
5 Ekurhuleni Chess Open 2022 (D) 2022/01/08 2022/01/09 Ekurhuleni (GE) Standard 60 0.83 7 7 3.0 1179.4 1173.0 Analysis
4 Ekurhuleni Trials (3) 2021 (U8+U10) 2021/11/06 2021/11/06 Ekurhuleni (GE) Standard 62 0.84 5 5 3.0 1166.1 1155.4 Analysis
3 Ekurhuleni Chess Chessa Open 2021 (C) 2021/03/27 2021/03/27 Ekurhuleni (GE) Standard 60 0.83 5 5 1.0 1213.0 1212.6 Analysis
2 Alberton Chess Club Open 2020 (E) 2020/02/22 2020/02/22 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1204.6 1204.0 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 15 7 0 8 7.0 46.7 -28.3 1272.5 1244.2
White 7 4 0 3 4.0 57.1 60.7 1276.3 1337.0
Black 8 3 0 5 3.0 37.5 -106.3 1269.2 1162.9
Standard All 5 0 0 5 0.0 0.0 -425.0 1406.5 981.5
White 2 0 0 2 0.0 0.0 -425.0 1477.1 1052.1
Black 3 0 0 3 0.0 0.0 -425.0 1359.5 934.5
Rapid All 10 7 0 3 7.0 70.0 170.0 1205.5 1375.5
White 5 4 0 1 4.0 80.0 255.0 1196.0 1451.0
Black 5 3 0 2 3.0 60.0 85.0 1214.9 1299.9
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 108 61 3 44 62.5 57.9 66.9 1232.6 1299.5
White 55 31 1 23 31.5 57.3 61.8 1232.7 1294.5
Black 53 30 2 21 31.0 58.5 72.2 1232.6 1304.7
Standard All 92 48 3 41 49.5 53.8 32.3 1237.7 1270.0
White 47 24 1 22 24.5 52.1 18.1 1238.6 1256.7
Black 45 24 2 19 25.0 55.6 47.2 1236.7 1283.9
Rapid All 16 13 0 3 13.0 81.3 265.6 1203.4 1469.0
White 8 7 0 1 7.0 87.5 318.8 1197.5 1516.2
Black 8 6 0 2 6.0 75.0 212.5 1209.3 1421.8
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 1120135370 Fick, L (Logan Nicolas) 3 2.0 2 0 1 66.7 1286.2 141.7 1427.9 View list
2 1110139505 Kheswa, S (Spholami) 2 1.0 1 0 1 50.0 1325.2 0.0 1325.2 View list
3 1130131224 Minny, O (Oban) 2 1.0 1 0 1 50.0 1197.5 0.0 1197.5 View list
4 1120140144 Myburgh, L (Liam) 2 1.0 1 0 1 50.0 1290.4 0.0 1290.4 View list
5 1120140146 Tang, K (Kevin) 2 1.0 1 0 1 50.0 1334.0 0.0 1334.0 View list
6 1130135701 Van Loggerenberg, E (Elandre) 2 1.0 1 0 1 50.0 1190.8 0.0 1190.8 View list
7 1120139501 Buitendag, D (Darius) 2 0.0 0 0 2 0.0 1368.3 -425.0 943.3 View list
8 2120111295 Britz, A (Abigail) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
9 1110142672 Bouwer, J (Jayden) 1 1.0 1 0 0 100.0 1331.8 425.0 1756.8 View list
10 1120152983 Chen, Y (Yuqi) 1 1.0 1 0 0 100.0 1346.7 425.0 1771.7 View list
11 1120143235 Buyeza, T (Tshenolo) 1 1.0 1 0 0 100.0 1434.9 425.0 1859.9 View list
12 1130133911 Butner, J (James) 1 1.0 1 0 0 100.0 1215.5 425.0 1640.5 View list
13 1110192043 Bekker, M (Mynhard) 1 1.0 1 0 0 100.0 1311.7 425.0 1736.7 View list
14 2110135380 Coetzee, M (Michelle) 1 1.0 1 0 0 100.0 1215.5 425.0 1640.5 View list
15 1110192045 Cronje, A (Alexander) 1 1.0 1 0 0 100.0 1308.2 425.0 1733.2 View list
16 1120142675 Costelha, M (Miguel) 1 1.0 1 0 0 100.0 1331.8 425.0 1756.8 View list
17 1120133960 Deulkar, R (Ronit) 1 1.0 1 0 0 100.0 1213.0 425.0 1638.0 View list
18 1090135387 Del Grosso, G (Gianluca Gabriele) 1 1.0 1 0 0 100.0 1179.4 425.0 1604.4 View list
19 1120134231 De Bruyn, DP (Dylan Patrick) 1 1.0 1 0 0 100.0 1321.2 425.0 1746.2 View list
20 1120301275 Fagan, N (Nathan) 1 1.0 1 0 0 100.0 1308.2 425.0 1733.2 View list