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: 2024/03/03 (96 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 rating1270.3
Curent Weighted rating1224.7
Curent Weighted performance1162.8
Current official/published rating (highest between Raw, WR and WP)1270.3
Current floor (min rating allowed)770.3
Current highest rating achieved1270.3
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)±150.0
Current Raw change used (final)0.0
Projected new Raw rating1270.3
Projected new Weighed rating1228.8
Projected new Weighted performance1162.8
Projected new official/published rating (highest between new Raw, new WR and new WP)1270.3
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1270.3
Projected new floor770.3
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 rating1277.4
Curent Weighted rating1218.9
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1277.4
Current floor (min rating allowed)777.4
Current highest rating achieved1277.4
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 rating1224.3
Projected new Weighted performance0.0
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
Projected new highest rating1277.4
Projected new floor777.4
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 rating1211.2
Curent Weighted rating1212.2
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1212.2
Current floor (min rating allowed)734.2
Current highest rating achieved1234.2
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)±163.2
Current Raw change used (final)0.0
Projected new Raw rating1211.2
Projected new Weighed rating1211.9
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1211.9
Projected effective change (new Official - current Official)-0.3
Projected new highest rating1234.2
Projected new floor734.2
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)734.2
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 floor734.2
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
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
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 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
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 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 28 15 1 12 15.5 55.4 45.5 1239.9 1285.5
White 13 8 0 5 8.0 61.5 98.1 1195.9 1294.0
Black 15 7 1 7 7.5 50.0 0.0 1278.1 1278.1
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 17 8 1 8 8.5 50.0 0.0 1226.3 1226.3
White 7 4 0 3 4.0 57.1 60.7 1182.8 1243.5
Black 10 4 1 5 4.5 45.0 -42.5 1256.8 1214.3
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 2120140117 Lambrechts, K (Kailynn) 1 1.0 1 0 0 100.0 1222.1 425.0 1647.1 View list
4 1140138136 Jacobs, E (Emmanuel) 1 1.0 1 0 0 100.0 1209.3 425.0 1634.3 View list
5 2120137358 Iuzhakova, H (Heidi) 1 1.0 1 0 0 100.0 1222.1 425.0 1647.1 View list
6 1130138135 Ismail, R (Razeen) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
7 1130193601 Muizenheimer, S (Sebastian) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
8 2130137332 Mowlana, K (Khaleela) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
9 2110148259 Dolman, J (Jay-Dee) 1 1.0 1 0 0 100.0 1215.8 425.0 1640.8 View list
10 1130158967 Barron, D (Dorian) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
11 1130137336 Polk, W (Windsor) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
12 1130162355 Sibidla, O (Onesisa) 1 1.0 1 0 0 100.0 1215.8 425.0 1640.8 View list
13 1130137342 Smit, Z (Zander) 1 1.0 1 0 0 100.0 1209.3 425.0 1634.3 View list
14 1130193609 Smith, Z (Zachary) 1 1.0 1 0 0 100.0 1220.1 425.0 1645.1 View list
15 1050148304 Temoore, A (Ameer) 1 1.0 1 0 0 100.0 1215.8 425.0 1640.8 View list
16 1080146891 Small, U (Uwen) 1 0.5 0 1 0 50.0 1215.8 0.0 1215.8 View list
17 1120137368 Sher, J (Jonah) 1 0.0 0 0 1 0.0 1222.1 -425.0 797.1 View list
18 1130130505 Rule, L (Liam) 1 0.0 0 0 1 0.0 1220.1 -425.0 795.1 View list
19 1140136551 Resnekov, O (Oliver) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
20 1140150636 Pearson, R (Rylee) 1 0.0 0 0 1 0.0 1209.3 -425.0 784.3 View list