Player Page

Van Der Westhuizen, J (Jack)
Dob: 2013/01/02 (U12)
Gender: Male
Chess SA id: 1130301080
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/08/11 (47 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 rating1372.3
Current Weighted rating1265.2
Current Weighted performance1299.6
Current official/published rating (highest between Raw, WR and WP)1372.3
Current highest rating achieved1431.1
Current floor (min rating allowed)931.1
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)±129.7
Current Raw change used (final)0.0
Projected new Raw rating1372.3
Projected new Weighed rating1166.3
Projected new Weighted performance1299.6
Projected new final Raw rating (if new WP > new Raw)1372.3
Projected new highest rating1431.1
Projected new floor931.1
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1372.3
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 rating1359.3
Current Weighted rating1263.0
Current Weighted performance1299.6
Current official/published rating (highest between Raw, WR and WP)1359.3
Current highest rating achieved1422.7
Current floor (min rating allowed)922.7
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)±132.1
Current Raw change used (final)0.0
Projected new Raw rating1359.3
Projected new Weighed rating1164.2
Projected new Weighted performance1299.6
Projected new final Raw rating (if new WP > new Raw)1359.3
Projected new highest rating1422.7
Projected new floor922.7
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1359.3
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
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)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating0.0
Projected new floor700.0
Projected new K-facor40
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
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
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)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating0.0
Projected new floor700.0
Projected new K-facor40
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
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
7 JMC Closed 2024 (C) 2024/08/09 2024/08/11 Johannesburg Metro (GJM) Standard 90 0.94 5 5 1.5 1431.1 1422.7 Analysis
6 Fourth Knight Riders Juniors Open Chess Tournament 204 (C) 2024/08/03 2024/08/03 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1431.1 1422.7 Analysis
5 Second Knight Riders Juniors Open Chess Tournament 2024 (C) 2024/06/08 2024/06/08 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1301.3 1303.9 Analysis
4 JMC Trinityhouse Little Falls 2024 (D) 2024/06/02 2024/06/02 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1301.3 1303.9 Analysis
3 JMC Crawford International Sandton 2024 (D) 2024/05/11 2024/05/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1274.4 1274.0 Analysis
2 JMC Helpmekaar Kollege Tournament 2024 (D) 2024/05/04 2024/05/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1274.4 1274.0 Analysis
1 1st Knights Open Tournament 2024 (D) 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1200.0 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 JMC Closed 2024 (C) 2024/08/09 2024/08/11 Johannesburg Metro (GJM) Standard 90 0.94 5 5 1.5 1431.1 1422.7 Analysis
6 Fourth Knight Riders Juniors Open Chess Tournament 204 (C) 2024/08/03 2024/08/03 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1431.1 1422.7 Analysis
5 Second Knight Riders Juniors Open Chess Tournament 2024 (C) 2024/06/08 2024/06/08 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1301.3 1303.9 Analysis
4 JMC Trinityhouse Little Falls 2024 (D) 2024/06/02 2024/06/02 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1301.3 1303.9 Analysis
3 JMC Crawford International Sandton 2024 (D) 2024/05/11 2024/05/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1274.4 1274.0 Analysis
2 JMC Helpmekaar Kollege Tournament 2024 (D) 2024/05/04 2024/05/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1274.4 1274.0 Analysis
1 1st Knights Open Tournament 2024 (D) 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 35 22 3 10 23.5 67.1 145.7 1250.4 1396.1
White 16 6 2 8 7.0 43.8 -53.1 1269.8 1216.7
Black 19 16 1 2 16.5 86.8 313.2 1234.0 1547.1
Standard All 35 22 3 10 23.5 67.1 145.7 1250.4 1396.1
White 16 6 2 8 7.0 43.8 -53.1 1269.8 1216.7
Black 19 16 1 2 16.5 86.8 313.2 1234.0 1547.1
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 35 22 3 10 23.5 67.1 145.7 1250.4 1396.1
White 16 6 2 8 7.0 43.8 -53.1 1269.8 1216.7
Black 19 16 1 2 16.5 86.8 313.2 1234.0 1547.1
Standard All 35 22 3 10 23.5 67.1 145.7 1250.4 1396.1
White 16 6 2 8 7.0 43.8 -53.1 1269.8 1216.7
Black 19 16 1 2 16.5 86.8 313.2 1234.0 1547.1
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1120152458 Chadalavada, B (Bhaarghavarama) 2 1.0 1 0 1 50.0 1366.2 0.0 1366.2 View list
2 1120138230 Moeketsi, M (Mafoko) 2 1.0 1 0 1 50.0 1274.4 0.0 1274.4 View list
3 2140160842 Nyathi, N (Nothando) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list
4 1120305495 Nolan, T (Tebello) 1 1.0 1 0 0 100.0 1431.1 425.0 1856.1 View list
5 2100133961 Hlatshwayo, S (Silindile) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list
6 1140192161 Hattingh, J (Johannes) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list
7 1140301738 Fogolin, O (Oliver) 1 1.0 1 0 0 100.0 1274.4 425.0 1699.4 View list
8 1120147297 Chikwava, R (Ronald) 1 1.0 1 0 0 100.0 1274.4 425.0 1699.4 View list
9 2130192097 Chen, Z (Zoey) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list
10 1120156716 Mahlangu, B (Bayede) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
11 2130143997 Mahlangu, A (Amahle) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
12 2120130720 Joule, J (Jessica) 1 1.0 1 0 0 100.0 1274.4 425.0 1699.4 View list
13 1140161313 Mushava, K (Kupakwashe Ayanda Blessin) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
14 1080300244 Bioto, J (Jael) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list
15 2120147298 Petersen, F (Farah) 1 1.0 1 0 0 100.0 1274.4 425.0 1699.4 View list
16 1140112260 Pillay, J (Joshua) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
17 2140153037 Potgieter, L (Lienke) 1 1.0 1 0 0 100.0 1274.4 425.0 1699.4 View list
18 1120161577 Tierney, G (Grayson) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list
19 111094848 Tshabalala, H (Happy) 1 1.0 1 0 0 100.0 1431.1 425.0 1856.1 View list
20 1120301093 Tshabalala, M (Matlotlo) 1 1.0 1 0 0 100.0 1301.3 425.0 1726.3 View list