Player Page

Chang, S (Samuel)
Dob: 2010/10/20 (U16)
Gender: Male
Chess SA id: 110088674
FIDE id:
Region: Buffalo City (EBC)
Citizen: RSA
Title(s):
Last active: 2024/02/24 (56 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 rating1529.2
Curent Weighted rating1531.1
Curent Weighted performance1328.6
Current official/published rating (highest between Raw, WR and WP)1531.1
Current floor (min rating allowed)1116.8
Current highest rating achieved1616.8
Current K-factor28
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)±103.7
Current Raw change used (final)0.0
Projected new Raw rating1529.2
Projected new Weighed rating1532.9
Projected new Weighted performance1328.6
Projected new official/published rating (highest between new Raw, new WR and new WP)1532.9
Projected effective change (new Official - current Official)+1.7
Projected new highest rating1616.8
Projected new floor1116.8
Projected new K-facor28
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 rating1526.0
Curent Weighted rating1522.1
Curent Weighted performance1378.0
Current official/published rating (highest between Raw, WR and WP)1526.0
Current floor (min rating allowed)1117.1
Current highest rating achieved1617.1
Current K-factor28
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)±104.2
Current Raw change used (final)0.0
Projected new Raw rating1526.0
Projected new Weighed rating1524.4
Projected new Weighted performance1378.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1526.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1617.1
Projected new floor1117.1
Projected new K-facor28
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 rating1249.0
Curent Weighted rating1180.6
Curent Weighted performance1020.5
Current official/published rating (highest between Raw, WR and WP)1249.0
Current floor (min rating allowed)749.0
Current highest rating achieved1249.0
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)±154.6
Current Raw change used (final)0.0
Projected new Raw rating1249.0
Projected new Weighed rating1187.6
Projected new Weighted performance1020.5
Projected new official/published rating (highest between new Raw, new WR and new WP)1249.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1249.0
Projected new floor749.0
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 rating1257.6
Curent Weighted rating971.5
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1257.6
Current floor (min rating allowed)749.0
Current highest rating achieved1257.6
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)±152.8
Current Raw change used (final)0.0
Projected new Raw rating1257.6
Projected new Weighed rating998.7
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1257.6
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1257.6
Projected new floor749.0
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
2 Grey College Team Championship 2024 (A) 2024/02/23 2024/02/24 Mangaung (FMB) Standard 60 0.83 5 5 2.5 1543.6 1545.9 Analysis
1 Chess Vikings VP-Mall Blitz 2024 (A) 2024/01/27 2024/01/27 Buffalo City (EBC) Blitz 8 0.25 9 9 4.0 1554.2 1226.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
78 Grey College Team Championship 2024 (A) 2024/02/23 2024/02/24 Mangaung (FMB) Standard 60 0.83 5 5 2.5 1543.6 1545.9 Analysis
77 Chess Vikings VP-Mall Blitz 2024 (A) 2024/01/27 2024/01/27 Buffalo City (EBC) Blitz 8 0.25 9 9 4.0 1554.2 1226.6 Analysis
76 Chess Vikings Exam Rapid 2023 (A) 2023/11/04 2023/11/04 Buffalo City (EBC) Rapid 20 0.47 7 6 2.5 1556.8 1144.0 Analysis
75 4th BC HS Trials 2023 (U18A-Adult) 2023/08/26 2023/08/26 Cape Winelands (WCW) Standard 60 0.83 5 5 3.0 1576.3 1568.9 Analysis
74 2023 SA Schools Winter Games (U15 Open) 2023/07/04 2023/07/06 West Rand (GWR) Standard 65 0.85 7 7 3.5 1616.8 1617.1 Analysis
73 Youth Day Chess Festival 2023 (B) 2023/06/24 2023/06/24 Buffalo City (EBC) Standard 90 0.94 5 5 5.0 1481.8 1471.3 Analysis
72 2023 EC Schools Provincial Winter Games (U15 Boys) 2023/06/02 2023/06/03 Buffalo City (EBC) Standard 60 0.83 6 6 5.0 1481.8 1471.3 Analysis
71 2023 BCM Schools Winter Games District Championships (U15 Boys) 2023/05/20 2023/05/20 Buffalo City (EBC) Standard 60 0.83 5 5 3.5 1457.6 1433.9 Analysis
70 EL Schools Winter Trials 2023 (U15 Boys) 2023/05/13 2023/05/13 Buffalo City (EBC) Standard 60 0.83 5 5 4.0 1457.6 1433.9 Analysis
69 BC Chess Trials 1 of 5 2023 (Prestige) 2023/04/29 2023/04/29 Buffalo City (EBC) Standard 60 0.83 5 4 0.0 1494.0 1473.6 Analysis
68 2023 South African Junior Closed Chess Championships (U14 Open) 2023/03/31 2023/04/04 Chess South Africa (CSA) Standard 120 1.00 9 9 4.5 1494.0 1473.6 Analysis
67 3rd Vikings Champs 2023 (Prestige) 2023/03/25 2023/03/25 Buffalo City (EBC) Standard 60 0.83 5 5 2.5 1501.2 1480.0 Analysis
66 2nd Master Vikings 2023 2023/02/23 2023/02/23 Buffalo City (EBC) Standard 60 0.83 5 5 2.0 1536.8 1524.5 Analysis
65 Master Vikings 2023 2023/02/11 2023/02/11 Buffalo City (EBC) Standard 60 0.83 5 5 2.0 1536.8 1524.5 Analysis
64 2022 South African Junior Wild Card Chess Championships (U14 Open) 2022/12/09 2022/12/12 4 Knights (4K) Standard 120 1.00 7 7 6.0 1443.7 1428.5 Analysis
63 2022 South African Junior Team Chess Championships (U14 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 4.0 1443.7 1428.5 Analysis
62 Slum Knights 5th 2022 (Open) 2022/10/22 2022/10/22 Buffalo City (EBC) Standard 60 0.83 5 5 3.0 1436.3 1419.2 Analysis
61 Slum Knights 2022 (A) 2022/08/06 2022/08/06 Buffalo City (EBC) Rapid 35 0.66 5 5 3.5 1424.7 1106.0 Analysis
60 BC Chess Trials 5 of 5 2022 (A) 2022/06/11 2022/06/11 Buffalo City (EBC) Rapid 12 0.33 10 10 5.0 1439.4 1110.8 Analysis
59 BC Chess 4th Border Trials 2022 (A) 2022/05/21 2022/05/21 Buffalo City (EBC) Rapid 12 0.33 10 10 6.0 1428.6 1037.6 Analysis
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Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 14 6 1 7 6.5 46.4 -30.4 1450.0 1419.7
White 7 2 1 4 2.5 35.7 -121.4 1464.0 1342.6
Black 7 4 0 3 4.0 57.1 60.7 1436.0 1496.8
Standard All 5 2 1 2 2.5 50.0 0.0 1429.4 1429.4
White 2 1 1 0 1.5 75.0 212.5 1355.8 1568.3
Black 3 1 0 2 1.0 33.3 -141.7 1478.4 1336.7
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 9 4 0 5 4.0 44.4 -47.2 1461.5 1414.3
White 5 1 0 4 1.0 20.0 -255.0 1507.3 1252.3
Black 4 3 0 1 3.0 75.0 212.5 1404.3 1616.8
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 463 243 21 199 253.5 54.8 40.4 1211.6 1252.0
White 228 119 10 99 124.0 54.4 37.3 1211.0 1248.3
Black 235 124 11 100 129.5 55.1 43.4 1212.2 1255.6
Standard All 368 201 17 150 209.5 56.9 58.9 1185.5 1244.4
White 180 97 8 75 101.0 56.1 51.9 1185.9 1237.9
Black 188 104 9 75 108.5 57.7 65.6 1185.1 1250.6
Rapid All 70 30 4 36 32.0 45.7 -36.4 1299.4 1263.0
White 35 16 2 17 17.0 48.6 -12.1 1287.1 1275.0
Black 35 14 2 19 15.0 42.9 -60.7 1311.7 1251.0
Blitz All 25 12 0 13 12.0 48.0 -17.0 1350.3 1333.3
White 13 6 0 7 6.0 46.2 -32.7 1353.6 1320.9
Black 12 6 0 6 6.0 50.0 0.0 1346.6 1346.6
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1070104009 Sibanda, T (Takudzwa) 11 2.0 2 0 9 18.2 1325.6 -270.5 1055.1 View list
2 108088680 Pearson, E (Ethan) 9 4.5 4 1 4 50.0 1369.2 0.0 1369.2 View list
3 1070099423 Lin, C (Chenyi) 9 0.5 0 1 8 5.6 1307.8 -377.8 930.0 View list
4 207065272 Dove, M (Megan) 8 6.5 6 1 1 81.3 1179.2 265.6 1444.8 View list
5 106065267 Becker, M (Matthew) 8 1.0 1 0 7 12.5 1218.6 -318.8 899.8 View list
6 105065320 Sparg, N (Nathan) 8 0.0 0 0 8 0.0 1342.9 -425.0 917.9 View list
7 1100100199 Botha, T (Tyler) 7 4.5 4 1 2 64.3 1403.2 121.4 1524.7 View list
8 108088678 Pearson, D (Dane) 6 5.0 4 2 0 83.3 1419.9 283.3 1703.2 View list
9 104043328 Xongwana, S (Sahlulelo) 6 1.0 1 0 5 16.7 1126.5 -283.3 843.2 View list
10 106065282 Meise, K (Keagen) 6 0.5 0 1 5 8.3 1400.6 -354.2 1046.4 View list
11 106059113 Chang, S (Sebastian) 6 0.0 0 0 6 0.0 1228.5 -425.0 803.5 View list
12 1060104008 Totose, Z (Zimi) 6 0.0 0 0 6 0.0 1248.5 -425.0 823.5 View list
13 1070105515 Voyi, O (Onesimo) 5 4.0 4 0 1 80.0 1376.0 255.0 1631.0 View list
14 1120109254 Mazikana, E (Ethan) 5 3.0 3 0 2 60.0 1452.9 85.0 1537.9 View list
15 1060104005 Ndlebe, A (Anda) 5 3.0 3 0 2 60.0 1218.8 85.0 1303.8 View list
16 105054349 Wang, I (Ikai) 5 1.5 1 1 3 30.0 1195.2 -170.0 1025.2 View list
17 110091704 Levitan, J (Judah) 5 1.0 1 0 4 20.0 1048.2 -255.0 793.2 View list
18 206044986 Wang, P-S (Pei-Shan) 5 1.0 1 0 4 20.0 1134.1 -255.0 879.1 View list
19 106078250 De Villiers, E (Ethan) 4 3.0 3 0 1 75.0 1201.4 212.5 1413.9 View list
20 2060098046 Jacobs, E (Elsje) 4 3.0 3 0 1 75.0 1287.0 212.5 1499.5 View list