Player Page

Van Der Westhuizen, J (Janu)
Dob: 2010/09/22 (U16)
Gender: Male
Chess SA id: 110093070
FIDE id:
Region: Sedibeng (GSV)
Citizen: RSA
Title(s):
Last active: 2024/10/12 (43 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
Current Raw rating1244.7
Current Weighted rating1238.2
Current Weighted performance1120.4
Current official/published rating (highest between Raw, WR and WP)1244.7
Current highest rating achieved1288.8
Current floor (min rating allowed)788.8
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)±155.6
Current Raw change used (final)0.0
Projected new Raw rating1244.7
Projected new Weighed rating1139.1
Projected new Weighted performance1120.4
Projected new final Raw rating (if new WP > new Raw)1244.7
Projected new highest rating1288.8
Projected new floor788.8
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1244.7
Projected effective change (new Official - current Official)=0.0
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
Current Raw rating1238.4
Current Weighted rating1226.9
Current Weighted performance1120.4
Current official/published rating (highest between Raw, WR and WP)1238.4
Current highest rating achieved1281.2
Current floor (min rating allowed)781.2
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)±157.0
Current Raw change used (final)0.0
Projected new Raw rating1238.4
Projected new Weighed rating1128.6
Projected new Weighted performance1120.4
Projected new final Raw rating (if new WP > new Raw)1238.4
Projected new highest rating1281.2
Projected new floor781.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1238.4
Projected effective change (new Official - current Official)=0.0
s
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
Current Raw rating613.6
Current Weighted rating604.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)613.6
Current highest rating achieved613.6
Current floor (min rating allowed)500.0
Current K-factor40
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)±382.4
Current Raw change used (final)0.0
Projected new Raw rating613.6
Projected new Weighed rating557.5
Projected new Weighted performance364.6
Projected new final Raw rating (if new WP > new Raw)613.6
Projected new highest rating613.6
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)613.6
Projected effective change (new Official - current Official)=0.0
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
Current Raw rating500.0
Current Weighted rating500.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)500.0
Current highest rating achieved500.0
Current floor (min rating allowed)500.0
Current K-factor40
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)±449.5
Current Raw change used (final)0.0
Projected new Raw rating500.0
Projected new Weighed rating460.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating500.0
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)500.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
2 NWU Vaal Chess Open 12 Oct 2024 (D) 2024/10/12 2024/10/12 Sedibeng (GSV) Standard 60 0.83 5 4 2.0 1227.7 1215.7 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U14B) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 1.5 1252.7 1239.5 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
32 NWU Vaal Chess Open 12 Oct 2024 (D) 2024/10/12 2024/10/12 Sedibeng (GSV) Standard 60 0.83 5 4 2.0 1227.7 1215.7 Analysis
31 2024 Gauteng Inter-Region Chess Championship (U14B) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 1.5 1252.7 1239.5 Analysis
30 Queens Gambit Chess Open 2023 (C) 2023/11/25 2023/11/25 Sedibeng (GSV) Standard 60 0.83 5 4 2.0 1265.5 1252.8 Analysis
29 NWU Vaal Open 2023 (C) 2023/10/14 2023/10/14 Sedibeng (GSV) Standard 61 0.83 5 5 2.0 1288.8 1281.2 Analysis
28 Driehoek Open Chess Tournament 2023 (C) 2023/09/13 2023/09/13 Sedibeng (GSV) Standard 60 0.83 5 5 2.5 1252.2 1258.9 Analysis
27 2023 Sedibeng West District Schools Chess Tournament (U13) 2023/08/12 2023/08/12 Sedibeng (GSV) Standard 60 0.83 5 5 4.0 1248.2 1229.0 Analysis
26 Overvaal Ope Jul 2023 (C) 2023/07/22 2023/07/22 Sedibeng (GSV) Standard 60 0.83 5 5 2.5 1235.4 1204.5 Analysis
25 VaalPark Primary Open Chess 2023 (B) 2023/06/16 2023/06/16 Sedibeng (GSV) Rapid 45 0.74 5 5 3.0 1215.4 500.0 Analysis
24 Gauteng Schools Individual Finals 2023 (U13 Boys) 2023/05/26 2023/05/26 Ekurhuleni (GE) Standard 60 0.83 5 5 1.0 1252.2 1258.9 Analysis
23 D8 Schools Individuals 2023 (U13 Boys) 2023/05/20 2023/05/20 West Rand (GWR) Standard 60 0.83 5 5 4.5 1252.2 1258.9 Analysis
22 Valia's Chess Tournament 2023 (C) 2023/05/06 2023/05/06 Sedibeng (GSV) Standard 60 0.83 5 5 2.0 1252.2 1258.9 Analysis
21 Overvaal Open 2023 (D) 2023/04/15 2023/04/15 Sedibeng (GSV) Standard 60 0.83 5 5 3.0 1219.6 1222.2 Analysis
20 2022 Gauteng Schools Team Championships (U13 Open) 2022/08/27 2022/08/27 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1233.0 1239.1 Analysis
19 Dirk De Koster Chess Open 2022 (D) 2022/04/23 2022/04/23 Ekurhuleni (GE) Standard 61 0.83 5 5 3.5 1201.0 1202.0 Analysis
18 Midvaal Ope 2022 (D) 2022/01/29 2022/01/29 Sedibeng (GSV) Standard 61 0.83 5 5 3.5 1158.5 1149.6 Analysis
17 Carel`s Open 2020 (C) 2020/02/29 2020/02/29 Sedibeng (GSV) Standard 60 0.83 5 5 2.0 1151.2 1143.6 Analysis
16 AG Visser 2020 (C) 2020/02/22 2020/02/22 Sedibeng (GSV) Standard 61 0.83 5 5 3.0 1151.2 1143.6 Analysis
15 Midvaal Chess Open 2020 (C) 2020/01/25 2020/01/25 Sedibeng (GSV) Standard 61 0.83 5 5 3.0 996.0 975.2 Analysis
14 2019 South African Junior Team Championships (U10C) 2020/01/04 2020/01/08 4 Knights (4K) Standard 120 1.00 7 7 5.5 996.0 975.2 Analysis
13 GE vs GSV Inter Regional 2019 (U10B) 2019/10/26 2019/10/26 Ekurhuleni (GE) Standard 60 0.83 5 5 1.0 1034.2 1020.8 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 9 3 1 5 3.5 38.9 -94.4 1325.2 1230.8
White 5 1 1 3 1.5 30.0 -170.0 1362.5 1192.5
Black 4 2 0 2 2.0 50.0 0.0 1278.7 1278.7
Standard All 9 3 1 5 3.5 38.9 -94.4 1325.2 1230.8
White 5 1 1 3 1.5 30.0 -170.0 1362.5 1192.5
Black 4 2 0 2 2.0 50.0 0.0 1278.7 1278.7
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 157 67 14 76 74.0 47.1 -24.4 1167.8 1143.5
White 72 28 5 39 30.5 42.4 -64.9 1172.3 1107.4
Black 85 39 9 37 43.5 51.2 10.0 1164.0 1174.0
Standard All 152 65 12 75 71.0 46.7 -28.0 1165.1 1137.2
White 70 28 4 38 30.0 42.9 -60.7 1169.1 1108.4
Black 82 37 8 37 41.0 50.0 0.0 1161.8 1161.8
Rapid All 5 2 2 1 3.0 60.0 85.0 1249.8 1334.8
White 2 0 1 1 0.5 25.0 -212.5 1285.7 1073.2
Black 3 2 1 0 2.5 83.3 283.3 1225.8 1509.2
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 1100108499 Odendaal, H (Hayden) 4 1.5 1 1 2 37.5 1008.5 -106.3 902.2 View list
2 1100139840 Smith, KE (Kaiden Elljay) 3 1.0 0 2 1 33.3 1229.5 -141.7 1087.9 View list
3 1120103521 De Lange, H (Henro) 3 0.0 0 0 3 0.0 906.8 -425.0 481.8 View list
4 1110103524 Kotzee, A (Armand) 3 0.0 0 0 3 0.0 1010.7 -425.0 585.7 View list
5 1100114958 Fourie, L (Lucius) 2 2.0 2 0 0 100.0 1242.5 425.0 1667.5 View list
6 1110106818 Griesel, W (Willem) 2 2.0 2 0 0 100.0 795.0 425.0 1220.0 View list
7 1100156448 Makume, K (Khotso) 2 2.0 2 0 0 100.0 1250.2 425.0 1675.2 View list
8 2100153290 Van As, A (An-Nike) 2 2.0 2 0 0 100.0 1240.5 425.0 1665.5 View list
9 108070894 Barnard, M (Martin) 2 1.0 1 0 1 50.0 1183.3 0.0 1183.3 View list
10 109087166 Cronje, O (Omri) 2 1.0 1 0 1 50.0 964.6 0.0 964.6 View list
11 1100116896 Maseloane, T (Tshepang) 2 1.0 1 0 1 50.0 1122.4 0.0 1122.4 View list
12 2110137806 Visser, M (Mila) 2 1.0 1 0 1 50.0 1231.6 0.0 1231.6 View list
13 1090143352 Mgwevu, Z (Zamani) 2 0.5 0 1 1 25.0 1252.2 -212.5 1039.7 View list
14 1100151855 Okelly, R (Ryan) 2 0.5 0 1 1 25.0 1225.4 -212.5 1012.9 View list
15 210082952 Van Biljon, J (Jessica) 2 0.5 0 1 1 25.0 784.5 -212.5 572.0 View list
16 111087168 Cronje, E (Emile) 2 0.0 0 0 2 0.0 933.3 -425.0 508.3 View list
17 1090111867 Mittermaier, G (Gunther) 2 0.0 0 0 2 0.0 1083.9 -425.0 658.9 View list
18 110087167 De Koker, C (Christiaan) 1 1.0 1 0 0 100.0 1025.3 425.0 1450.3 View list
19 1110107188 De Beer, L (Liam) 1 1.0 1 0 0 100.0 996.0 425.0 1421.0 View list
20 2100106814 Christie, T (Tiara) 1 1.0 1 0 0 100.0 555.8 425.0 980.8 View list