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: 2024/10/05 (50 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 rating1560.9
Current Weighted rating1552.5
Current Weighted performance1538.6
Current official/published rating (highest between Raw, WR and WP)1560.9
Current highest rating achieved1616.8
Current floor (min rating allowed)1116.8
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)±99.2
Current Raw change used (final)0.0
Projected new Raw rating1560.9
Projected new Weighed rating1428.9
Projected new Weighted performance1538.6
Projected new final Raw rating (if new WP > new Raw)1560.9
Projected new highest rating1616.8
Projected new floor1116.8
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1560.9
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 rating1566.3
Current Weighted rating1548.6
Current Weighted performance1538.6
Current official/published rating (highest between Raw, WR and WP)1566.3
Current highest rating achieved1617.1
Current floor (min rating allowed)1117.1
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)±98.4
Current Raw change used (final)0.0
Projected new Raw rating1566.3
Projected new Weighed rating1425.6
Projected new Weighted performance1538.6
Projected new final Raw rating (if new WP > new Raw)1566.3
Projected new highest rating1617.1
Projected new floor1117.1
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1566.3
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 rating1249.0
Current Weighted rating1220.9
Current Weighted performance1084.3
Current official/published rating (highest between Raw, WR and WP)1249.0
Current highest rating achieved1249.0
Current floor (min rating allowed)749.0
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 rating1125.2
Projected new Weighted performance1084.3
Projected new final Raw rating (if new WP > new Raw)1249.0
Projected new highest rating1249.0
Projected new floor749.0
Projected new K-facor36
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
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 rating1257.6
Current Weighted rating1133.1
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1257.6
Current highest rating achieved1257.6
Current floor (min rating allowed)757.6
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 rating1050.2
Projected new Weighted performance611.9
Projected new final Raw rating (if new WP > new Raw)1257.6
Projected new highest rating1257.6
Projected new floor757.6
Projected new K-facor36
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
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
9 East London Open 2024 (A) 2024/10/04 2024/10/05 Buffalo City (EBC) Standard 60 0.83 5 4 2.0 1549.7 1550.6 Analysis
8 5th BC Trials 2024 (U18-Adult) 2024/08/24 2024/08/24 Buffalo City (EBC) Standard 60 0.83 5 5 3.5 1535.6 1531.4 Analysis
7 South African Open Chess Championship 2024 (A) 2024/06/29 2024/07/07 Ethekwini (KED) Standard 120 1.00 11 11 5.0 1604.1 1601.1 Analysis
6 2024 African Youth Chess Championship 2024/06/16 2024/06/22 South Africa (RSA) Standard 120 1.00 9 9 4.5 1584.5 1579.5 Analysis
5 BC Chess HS Trials 3 2024 (U18-Adult) 2024/05/04 2024/05/04 Buffalo City (EBC) Standard 60 0.83 5 5 3.0 1554.2 1556.8 Analysis
4 South African Junior Closed Chess Championship 2024 (U14 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 5.5 1554.2 1556.8 Analysis
3 UFH Open 2024 (A) 2024/04/13 2024/04/14 Amathole (EAL) Standard 90 0.94 7 7 4.0 1529.2 1526.0 Analysis
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
85 East London Open 2024 (A) 2024/10/04 2024/10/05 Buffalo City (EBC) Standard 60 0.83 5 4 2.0 1549.7 1550.6 Analysis
84 5th BC Trials 2024 (U18-Adult) 2024/08/24 2024/08/24 Buffalo City (EBC) Standard 60 0.83 5 5 3.5 1535.6 1531.4 Analysis
83 South African Open Chess Championship 2024 (A) 2024/06/29 2024/07/07 Ethekwini (KED) Standard 120 1.00 11 11 5.0 1604.1 1601.1 Analysis
82 2024 African Youth Chess Championship 2024/06/16 2024/06/22 South Africa (RSA) Standard 120 1.00 9 9 4.5 1584.5 1579.5 Analysis
81 BC Chess HS Trials 3 2024 (U18-Adult) 2024/05/04 2024/05/04 Buffalo City (EBC) Standard 60 0.83 5 5 3.0 1554.2 1556.8 Analysis
80 South African Junior Closed Chess Championship 2024 (U14 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 5.5 1554.2 1556.8 Analysis
79 UFH Open 2024 (A) 2024/04/13 2024/04/14 Amathole (EAL) Standard 90 0.94 7 7 4.0 1529.2 1526.0 Analysis
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
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Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 64 30 8 26 34.0 53.1 26.6 1536.0 1562.6
White 31 17 5 9 19.5 62.9 109.7 1513.2 1622.8
Black 33 13 3 17 14.5 43.9 -51.5 1557.5 1505.9
Standard All 55 26 8 21 30.0 54.5 38.6 1548.2 1586.8
White 26 16 5 5 18.5 71.2 179.8 1514.3 1694.1
Black 29 10 3 16 11.5 39.7 -87.9 1578.6 1490.7
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 513 267 28 218 281.0 54.8 40.6 1245.6 1286.2
White 252 134 14 104 141.0 56.0 50.6 1241.2 1291.8
Black 261 133 14 114 140.0 53.6 30.9 1249.8 1280.8
Standard All 418 225 24 169 237.0 56.7 56.9 1230.3 1287.2
White 204 112 12 80 118.0 57.8 66.7 1226.1 1292.8
Black 214 113 12 89 119.0 55.6 47.7 1234.3 1282.0
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 1070099423 Lin, C (Chenyi) 10 0.5 0 1 9 5.0 1332.0 -382.5 949.5 View list
3 108088680 Pearson, E (Ethan) 9 4.5 4 1 4 50.0 1369.2 0.0 1369.2 View list
4 106065267 Becker, M (Matthew) 9 1.0 1 0 8 11.1 1255.9 -330.6 925.3 View list
5 207065272 Dove, M (Megan) 8 6.5 6 1 1 81.3 1179.2 265.6 1444.8 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 106065282 Meise, K (Keagen) 7 0.5 0 1 6 7.1 1419.8 -364.3 1055.6 View list
9 108088678 Pearson, D (Dane) 6 5.0 4 2 0 83.3 1419.9 283.3 1703.2 View list
10 1070105515 Voyi, O (Onesimo) 6 4.5 4 1 1 75.0 1402.6 212.5 1615.1 View list
11 1120109254 Mazikana, E (Ethan) 6 4.0 4 0 2 66.7 1469.0 141.7 1610.7 View list
12 104043328 Xongwana, S (Sahlulelo) 6 1.0 1 0 5 16.7 1126.5 -283.3 843.2 View list
13 106059113 Chang, S (Sebastian) 6 0.0 0 0 6 0.0 1228.5 -425.0 803.5 View list
14 1060104008 Totose, Z (Zimi) 6 0.0 0 0 6 0.0 1248.5 -425.0 823.5 View list
15 106078250 De Villiers, E (Ethan) 5 4.0 4 0 1 80.0 1272.0 255.0 1527.0 View list
16 1060104005 Ndlebe, A (Anda) 5 3.0 3 0 2 60.0 1218.8 85.0 1303.8 View list
17 105054349 Wang, I (Ikai) 5 1.5 1 1 3 30.0 1195.2 -170.0 1025.2 View list
18 110091704 Levitan, J (Judah) 5 1.0 1 0 4 20.0 1048.2 -255.0 793.2 View list
19 206044986 Wang, P-S (Pei-Shan) 5 1.0 1 0 4 20.0 1134.1 -255.0 879.1 View list
20 2060098046 Jacobs, E (Elsje) 4 3.0 3 0 1 75.0 1287.0 212.5 1499.5 View list