Player Page

Choonoo Johnson, Z (Zachary)
Dob: 2013/02/09 (U12)
Gender: Male
Chess SA id: 1130137320
FIDE id:
Region: Cape Town (WCT)
Citizen: RSA
Title(s):
Last active: 2024/07/26 (77 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 rating1274.6
Current Weighted rating1240.9
Current Weighted performance1166.6
Current official/published rating (highest between Raw, WR and WP)1274.6
Current highest rating achieved1274.6
Current floor (min rating allowed)774.6
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)±149.1
Current Raw change used (final)0.0
Projected new Raw rating1274.6
Projected new Weighed rating1142.6
Projected new Weighted performance1166.6
Projected new final Raw rating (if new WP > new Raw)1274.6
Projected new highest rating1274.6
Projected new floor774.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1274.6
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 rating1277.4
Current Weighted rating1238.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1277.4
Current highest rating achieved1277.4
Current floor (min rating allowed)777.4
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)±148.5
Current Raw change used (final)0.0
Projected new Raw rating1277.4
Projected new Weighed rating1141.0
Projected new Weighted performance760.9
Projected new final Raw rating (if new WP > new Raw)1277.4
Projected new highest rating1277.4
Projected new floor777.4
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1277.4
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 rating1228.8
Current Weighted rating1215.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1228.8
Current highest rating achieved1234.2
Current floor (min rating allowed)734.2
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)±159.1
Current Raw change used (final)0.0
Projected new Raw rating1228.8
Projected new Weighed rating1118.3
Projected new Weighted performance967.9
Projected new final Raw rating (if new WP > new Raw)1228.8
Projected new highest rating1234.2
Projected new floor734.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1228.8
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.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
3 CT Metro Central District Top Schools 2024 (U13 Mixed) 2024/07/26 2024/07/26 Cape Town (WCT) Rapid 30 0.60 5 5 3.0 1270.3 1211.2 Analysis
2 Cape Town Metro Schools Chess Closed Individuals 2024 (U11 Boys) 2024/03/02 2024/03/03 Cape Town (WCT) Standard 60 0.83 6 6 4.0 1220.1 1216.2 Analysis
1 CT Metro Central District Schools Chess Individuals Trials 2024 (U11 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 5 3.0 1209.3 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
6 CT Metro Central District Top Schools 2024 (U13 Mixed) 2024/07/26 2024/07/26 Cape Town (WCT) Rapid 30 0.60 5 5 3.0 1270.3 1211.2 Analysis
5 Cape Town Metro Schools Chess Closed Individuals 2024 (U11 Boys) 2024/03/02 2024/03/03 Cape Town (WCT) Standard 60 0.83 6 6 4.0 1220.1 1216.2 Analysis
4 CT Metro Central District Schools Chess Individuals Trials 2024 (U11 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 5 3.0 1209.3 1200.0 Analysis
3 Cape of Good Hope Open 2023 (U12) 2023/01/28 2023/01/28 Cape Town (WCT) Rapid 25 0.54 6 6 2.0 1222.1 1234.2 Analysis
2 Summer Slam 2022 (C) 2022/12/13 2022/12/13 Cape Town (WCT) Rapid 20 0.47 6 6 3.5 1215.8 1221.6 Analysis
1 Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U8+U10) 2022/02/19 2022/02/19 Cape Town (WCT) Rapid 30 0.60 5 5 3.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 16 10 0 6 10.0 62.5 106.3 1245.7 1352.0
White 8 5 0 3 5.0 62.5 106.3 1205.0 1311.3
Black 8 5 0 3 5.0 62.5 106.3 1286.4 1392.7
Standard All 11 7 0 4 7.0 63.6 115.9 1261.0 1376.9
White 6 4 0 2 4.0 66.7 141.7 1211.1 1352.8
Black 5 3 0 2 3.0 60.0 85.0 1320.8 1405.8
Rapid All 5 3 0 2 3.0 60.0 85.0 1212.2 1297.2
White 2 1 0 1 1.0 50.0 0.0 1186.6 1186.6
Black 3 2 0 1 2.0 66.7 141.7 1229.2 1370.9
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 33 18 1 14 18.5 56.1 51.5 1235.7 1287.2
White 15 9 0 6 9.0 60.0 85.0 1194.6 1279.6
Black 18 9 1 8 9.5 52.8 23.6 1269.9 1293.6
Standard All 11 7 0 4 7.0 63.6 115.9 1261.0 1376.9
White 6 4 0 2 4.0 66.7 141.7 1211.1 1352.8
Black 5 3 0 2 3.0 60.0 85.0 1320.8 1405.8
Rapid All 22 11 1 10 11.5 52.3 19.3 1223.1 1242.4
White 9 5 0 4 5.0 55.6 47.2 1183.7 1230.9
Black 13 6 1 6 6.5 50.0 0.0 1250.4 1250.4
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 1130137335 Nel, C (Charles Paul) 3 1.0 1 0 2 33.3 1214.1 -141.7 1072.4 View list
2 1130134079 Mngqibisa, P (Phila) 1 1.0 1 0 0 100.0 1209.3 425.0 1634.3 View list
3 2110134086 Mavuso, T (Thimna) 1 1.0 1 0 0 100.0 1270.3 425.0 1695.3 View list
4 2120140117 Lambrechts, K (Kailynn) 1 1.0 1 0 0 100.0 1222.1 425.0 1647.1 View list
5 1150307643 Jeram, V (Vira) 1 1.0 1 0 0 100.0 1270.3 425.0 1695.3 View list
6 1140138136 Jacobs, E (Emmanuel) 1 1.0 1 0 0 100.0 1209.3 425.0 1634.3 View list
7 2120137358 Iuzhakova, H (Heidi) 1 1.0 1 0 0 100.0 1222.1 425.0 1647.1 View list
8 1130138135 Ismail, R (Razeen) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
9 1130193601 Muizenheimer, S (Sebastian) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
10 2130137332 Mowlana, K (Khaleela) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
11 2110148259 Dolman, J (Jay-Dee) 1 1.0 1 0 0 100.0 1215.8 425.0 1640.8 View list
12 1130158967 Barron, D (Dorian) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
13 1130137336 Polk, W (Windsor) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
14 2110193310 Opperman, L (Larah) 1 1.0 1 0 0 100.0 1270.3 425.0 1695.3 View list
15 1130162355 Sibidla, O (Onesisa) 1 1.0 1 0 0 100.0 1215.8 425.0 1640.8 View list
16 1130137342 Smit, Z (Zander) 1 1.0 1 0 0 100.0 1209.3 425.0 1634.3 View list
17 1130193609 Smith, Z (Zachary) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
18 1050148304 Temoore, A (Ameer) 1 1.0 1 0 0 100.0 1215.8 425.0 1640.8 View list
19 1080146891 Small, U (Uwen) 1 0.5 0 1 0 50.0 1215.8 0.0 1215.8 View list
20 1130130505 Rule, L (Liam) 1 0.0 0 0 1 0.0 1220.1 -425.0 795.1 View list