Player Page

Williams, ZJ (Zachary John)
Dob: 2007/09/06 (U18)
Gender: Male
Chess SA id: 1070118239
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2022/03/12 (829 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 rating1172.0
Current Weighted rating1172.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1172.0
Current highest rating achieved1172.0
Current floor (min rating allowed)672.0
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)±172.6
Current Raw change used (final)0.0
Projected new Raw rating1172.0
Projected new Weighed rating1078.2
Projected new Weighted performance610.0
Projected new final Raw rating (if new WP > new Raw)1172.0
Projected new highest rating1172.0
Projected new floor672.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1172.0
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 rating1173.2
Current Weighted rating1173.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1173.2
Current highest rating achieved1173.2
Current floor (min rating allowed)673.2
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)±172.3
Current Raw change used (final)0.0
Projected new Raw rating1173.2
Projected new Weighed rating1079.3
Projected new Weighted performance610.0
Projected new final Raw rating (if new WP > new Raw)1173.2
Projected new highest rating1173.2
Projected new floor673.2
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1173.2
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 achieved1200.0
Current floor (min rating allowed)700.0
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 rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
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 achieved1200.0
Current floor (min rating allowed)700.0
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 rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
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.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
4 JNW Trinityhouse LF 2022 (Contenders) 2022/03/12 2022/03/12 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1139.5 1132.4 Analysis
3 JNW Club - Trinityhouse Little Falls Open 2020 (D) 2020/03/14 2020/03/14 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1087.4 1066.4 Analysis
2 JNW Club - Trinityhouse Randpark Ridge Open 2020 (D) 2020/02/22 2020/02/22 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.5 1111.0 1092.0 Analysis
1 2019 Gauteng School League Finals (U13 Open) 2019/08/23 2019/08/23 Tshwane (GTP) Standard 60 0.83 5 5 0.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main 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
Standard 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
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 20 7 2 11 8.0 40.0 -85.0 1184.9 1099.9
White 10 4 1 5 4.5 45.0 -42.5 1164.6 1122.1
Black 10 3 1 6 3.5 35.0 -127.5 1205.2 1077.7
Standard All 20 7 2 11 8.0 40.0 -85.0 1184.9 1099.9
White 10 4 1 5 4.5 45.0 -42.5 1164.6 1122.1
Black 10 3 1 6 3.5 35.0 -127.5 1205.2 1077.7
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 210091697 Botha, A (Andrea) 2 1.0 1 0 1 50.0 1099.2 0.0 1099.2 View list
2 107093975 Coetzer, R (Ruan) 1 1.0 1 0 0 100.0 1087.4 425.0 1512.4 View list
3 1100110075 Mupalala, K (Kenzo) 1 1.0 1 0 0 100.0 1087.4 425.0 1512.4 View list
4 1120138265 Strickler, L (Luke) 1 1.0 1 0 0 100.0 1139.5 425.0 1564.5 View list
5 211091693 Steyn, A (Anneke) 1 1.0 1 0 0 100.0 1139.5 425.0 1564.5 View list
6 1110138263 Ryan, D (Declan) 1 1.0 1 0 0 100.0 1139.5 425.0 1564.5 View list
7 1080103611 Ludek, K (Kai) 1 1.0 1 0 0 100.0 1111.0 425.0 1536.0 View list
8 109078830 Johnson, A (Ashar) 1 0.5 0 1 0 50.0 1087.4 0.0 1087.4 View list
9 1070132201 Owens, D (Dylan) 1 0.5 0 1 0 50.0 1111.0 0.0 1111.0 View list
10 1070105735 Monyai, K (Karabo) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
11 1060115074 Masilela, T (Thabiso) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
12 1080105739 Mafafo, BL (Botshelo Lindokuhle) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
13 1060105200 Mabena, M (Mkhuseli) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
14 1020118417 Lin, X (Xingjie) 1 0.0 0 0 1 0.0 1087.4 -425.0 662.4 View list
15 110091688 Kwak, J (Jaeson) 1 0.0 0 0 1 0.0 1111.0 -425.0 686.0 View list
16 108082807 Joseph, J (Jamie) 1 0.0 0 0 1 0.0 1111.0 -425.0 686.0 View list
17 2070098538 De Lange, S (Sophia) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
18 1060113146 Barnard, N (Nathan) 1 0.0 0 0 1 0.0 1139.5 -425.0 714.5 View list
19 1100111138 Akker, D (Dylan) 1 0.0 0 0 1 0.0 1139.5 -425.0 714.5 View list