Player Page

Ma, C (Chengyan)
Dob: 2008/10/07 (U18)
Gender: Male
Chess SA id: 108076744
FIDE id:
Region: Cape Town (WCT)
Citizen: RSA
Title(s):
Last active: 2024/02/03 (102 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 rating1031.3
Curent Weighted rating1020.8
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1031.3
Current floor (min rating allowed)531.3
Current highest rating achieved1031.3
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)±210.9
Current Raw change used (final)0.0
Projected new Raw rating1031.3
Projected new Weighed rating1021.8
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1031.3
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1031.3
Projected new floor531.3
Projected new K-facor40
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 rating944.9
Curent Weighted rating880.5
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)944.9
Current floor (min rating allowed)444.9
Current highest rating achieved944.9
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)±238.5
Current Raw change used (final)0.0
Projected new Raw rating944.9
Projected new Weighed rating886.8
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)944.9
Projected effective change (new Official - current Official)=0.0
Projected new highest rating944.9
Projected new floor444.9
Projected new K-facor40
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 rating1073.6
Curent Weighted rating1073.6
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1073.6
Current floor (min rating allowed)573.6
Current highest rating achieved1073.6
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)±198.5
Current Raw change used (final)0.0
Projected new Raw rating1073.6
Projected new Weighed rating1073.6
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1073.6
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1073.6
Projected new floor573.6
Projected new K-facor40
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 rating811.6
Curent Weighted rating811.6
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)811.6
Current floor (min rating allowed)573.6
Current highest rating achieved811.6
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)±288.4
Current Raw change used (final)0.0
Projected new Raw rating811.6
Projected new Weighed rating811.6
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)811.6
Projected effective change (new Official - current Official)=0.0
Projected new highest rating811.6
Projected new floor573.6
Projected new K-facor40
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 North District School Trials 2024 (U18 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 3 1.0 1017.7 919.3 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
5 North District School Trials 2024 (U18 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 3 1.0 1017.7 919.3 Analysis
4 2020 Welgemoed Chess Challenge (U14) 2020/02/29 2020/02/29 Cape Town (WCT) Rapid 30 0.60 5 5 3.0 967.8 1011.2 Analysis
3 Welgemoed Chess Challenge 2019 (U12) 2019/02/23 2019/02/23 Cape Town (WCT) Rapid 30 0.60 5 5 4.0 904.7 910.0 Analysis
2 Welgemoed Chess Challenge 2018 (U12) 2018/02/24 2018/02/24 Cape Town (WCT) Rapid 30 0.60 5 5 4.0 848.8 811.6 Analysis
1 South African Junior Team Championships 2017 (U10B) 2018/01/04 2018/01/08 4 Knights (4K) Standard 120 1.00 7 7 5.0 811.6 811.6 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 3 1 0 2 1.0 33.3 -141.7 1306.4 1164.7
White 2 1 0 1 1.0 50.0 0.0 1359.6 1359.6
Black 1 0 0 1 0.0 0.0 -425.0 1200.0 775.0
Standard All 3 1 0 2 1.0 33.3 -141.7 1306.4 1164.7
White 2 1 0 1 1.0 50.0 0.0 1359.6 1359.6
Black 1 0 0 1 0.0 0.0 -425.0 1200.0 775.0
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 25 17 0 8 17.0 68.0 153.0 1050.5 1203.5
White 15 11 0 4 11.0 73.3 198.3 1073.8 1272.1
Black 10 6 0 4 6.0 60.0 85.0 1015.6 1100.6
Standard All 10 6 0 4 6.0 60.0 85.0 915.6 1000.6
White 6 4 0 2 4.0 66.7 141.7 904.1 1045.8
Black 4 2 0 2 2.0 50.0 0.0 932.8 932.8
Rapid All 15 11 0 4 11.0 73.3 198.3 1140.5 1338.8
White 9 7 0 2 7.0 77.8 236.1 1187.0 1423.1
Black 6 4 0 2 4.0 66.7 141.7 1070.8 1212.4
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 2080119075 Jika, Z (Zintle) 1 1.0 1 0 0 100.0 967.8 425.0 1392.8 View list
2 1070132139 Fourie , P (Pierre) 1 1.0 1 0 0 100.0 967.8 425.0 1392.8 View list
3 208061417 Botha, L (Lika) 1 1.0 1 0 0 100.0 811.6 425.0 1236.6 View list
4 1080108760 Booi, S (Sipho) 1 1.0 1 0 0 100.0 904.7 425.0 1329.7 View list
5 207088263 Ntanjana, A (Asemahle) 1 1.0 1 0 0 100.0 848.8 425.0 1273.8 View list
6 108087778 Naidoo, N (Nikhil) 1 1.0 1 0 0 100.0 848.8 425.0 1273.8 View list
7 108058811 Louw, B (Benrico) 1 1.0 1 0 0 100.0 811.6 425.0 1236.6 View list
8 107092998 Linegar, J (John) 1 1.0 1 0 0 100.0 848.8 425.0 1273.8 View list
9 2080107974 Selzer, A (Alexia) 1 1.0 1 0 0 100.0 904.7 425.0 1329.7 View list
10 108086187 Rossouw, J (Johrne) 1 1.0 1 0 0 100.0 811.6 425.0 1236.6 View list
11 108066994 Pyle, A (Andrew) 1 1.0 1 0 0 100.0 811.6 425.0 1236.6 View list
12 107072031 Pfaff, D (Darius) 1 1.0 1 0 0 100.0 848.8 425.0 1273.8 View list
13 1070193708 Van Der Merwe, J (Juandru) 1 1.0 1 0 0 100.0 1017.7 425.0 1442.7 View list
14 108087045 Solomon, M (Matteo) 1 1.0 1 0 0 100.0 967.8 425.0 1392.8 View list
15 208067323 Aldum, C (Carla) 1 1.0 1 0 0 100.0 811.6 425.0 1236.6 View list
16 108087010 Viljoen, W (Wynand) 1 1.0 1 0 0 100.0 904.7 425.0 1329.7 View list
17 1090109863 Yi, M (Meiyao) 1 1.0 1 0 0 100.0 904.7 425.0 1329.7 View list
18 108065178 Van Der Walt, JHT (Jean Hendrik T) 1 0.0 0 0 1 0.0 811.6 -425.0 386.6 View list
19 108061379 Solomon, D (Daniel) 1 0.0 0 0 1 0.0 848.8 -425.0 423.8 View list
20 107053637 Palmer, RN (Reegan) 1 0.0 0 0 1 0.0 967.8 -425.0 542.8 View list