Player Page

Botha, A (Andrea)
Dob: 2010/09/06 (U16)
Gender: Female
Chess SA id: 210091697
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/05/04 (10 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 rating1355.3
Curent Weighted rating1349.5
Curent Weighted performance1286.6
Current official/published rating (highest between Raw, WR and WP)1355.3
Current floor (min rating allowed)889.3
Current highest rating achieved1389.3
Current K-factor36
Games played this month5
Score (S)2.0
Expected score (We)2.31
Difference (S-We)-0.31
Current Raw change (no limits, including tournament time weight)-9.3
Current min/max change allowed (with limits)±132.9
Current Raw change used (final)-9.3
Projected new Raw rating1346.0
Projected new Weighed rating1351.3
Projected new Weighted performance1286.6
Projected new official/published rating (highest between new Raw, new WR and new WP)1351.3
Projected effective change (new Official - current Official)-4.0
Projected new highest rating1389.3
Projected new floor889.3
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 rating1350.7
Curent Weighted rating1345.3
Curent Weighted performance1287.7
Current official/published rating (highest between Raw, WR and WP)1350.7
Current floor (min rating allowed)887.4
Current highest rating achieved1387.4
Current K-factor36
Games played this month5
Score (S)2.0
Expected score (We)2.36
Difference (S-We)-0.36
Current Raw change (no limits, including tournament time weight)-13.0
Current min/max change allowed (with limits)±133.8
Current Raw change used (final)-13.0
Projected new Raw rating1337.7
Projected new Weighed rating1346.9
Projected new Weighted performance1287.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1346.9
Projected effective change (new Official - current Official)-3.8
Projected new highest rating1387.4
Projected new floor887.4
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 rating1160.0
Curent Weighted rating1160.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1160.0
Current floor (min rating allowed)660.0
Current highest rating achieved1160.0
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)±175.5
Current Raw change used (final)0.0
Projected new Raw rating1160.0
Projected new Weighed rating1160.0
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1160.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1160.0
Projected new floor660.0
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 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)660.0
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 floor660.0
Projected new K-facor36
Tournaments
Tournament: JMC Helpmekaar Kollege Tournament 2024 (C)
Start: 2024/05/04  End: 2024/05/04  Host: GJM  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 2.0
Main rating: 1355.3  Rating gain/loss: -9.3
Type rating: 1350.7  Rating gain/loss: -13.0
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 JMC Helpmekaar Kollege Tournament 2024 (C) 2024/05/04 2024/05/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1355.3 1350.7 Analysis
3 1st Knights Open Tournament 2024 (C) 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1362.8 1357.9 Analysis
2 JMC Kick Off Tournament 2024 (D) 2024/01/28 2024/01/28 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1389.3 1387.4 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U14 Girls) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 2.5 1389.3 1387.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
41 JMC Helpmekaar Kollege Tournament 2024 (C) 2024/05/04 2024/05/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1355.3 1350.7 Analysis
40 1st Knights Open Tournament 2024 (C) 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1362.8 1357.9 Analysis
39 JMC Kick Off Tournament 2024 (D) 2024/01/28 2024/01/28 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1389.3 1387.4 Analysis
38 2024 Gauteng Inter-Region Chess Championship (U14 Girls) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 2.5 1389.3 1387.4 Analysis
37 2023 Gauteng Top Schools (U13 Mixed) 2023/08/18 2023/08/18 West Rand (GWR) Standard 60 0.83 5 5 3.5 1339.0 1333.0 Analysis
36 JMC Closed Aug 2023 (U14) 2023/08/04 2023/08/06 Johannesburg Metro (GJM) Standard 90 0.94 6 6 3.0 1339.0 1333.0 Analysis
35 JMC Trinity Little Falls 2023 (C) 2023/07/02 2023/07/02 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1342.9 1339.8 Analysis
34 JNW Open - Trinityhouse Little Falls 2023 (C) 2023/06/24 2023/06/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1303.5 1297.6 Analysis
33 Gauteng Schools Individual Finals 2023 (U13 Girls) 2023/05/26 2023/05/26 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1308.2 1309.5 Analysis
32 JNW Open - Trinityhouse Little Falls 2023 (C) 2023/05/13 2023/05/13 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1308.2 1309.5 Analysis
31 Mzansi Fide Open 2023 (Intermediate) 2023/04/27 2023/05/01 Johannesburg Metro (GJM) Standard 120 1.00 6 6 3.0 1308.2 1309.5 Analysis
30 JNW Open - Crawford 2023 (C) 2023/03/04 2023/03/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1267.3 1259.8 Analysis
29 2022 South African Junior Team Chess Championships (U14 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 6 2.0 1297.9 1283.2 Analysis
28 JMC 2nd Trials 2022 (C) 2022/08/27 2022/08/27 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1182.4 1169.2 Analysis
27 2022 Gauteng Schools Team Championships (U13 Open) 2022/08/27 2022/08/27 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1182.4 1169.2 Analysis
26 JMC Trials 1 - Laerskool Fontainebleau 2022 (U14) 2022/07/24 2022/07/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.0 1213.2 1206.3 Analysis
25 2022 Gauteng Schools Individual Chess Championship (U13 Girls) 2022/06/18 2022/06/18 Ekurhuleni (GE) Standard 60 0.83 5 5 3.5 1179.1 1162.4 Analysis
24 JNW Trinityhouse LF 2022 (Contenders) 2022/03/12 2022/03/12 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.5 1221.2 1212.8 Analysis
23 2022 Gauteng Interregion (U12 Open) 2022/02/26 2022/02/26 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1115.2 1101.4 Analysis
22 JMC @ Pinnacle 2022 (C) 2022/02/19 2022/02/19 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1115.2 1101.4 Analysis
123
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 20 10 1 9 10.5 52.5 21.3 1293.0 1314.2
White 10 5 0 5 5.0 50.0 0.0 1296.5 1296.5
Black 10 5 1 4 5.5 55.0 42.5 1289.4 1331.9
Standard All 20 10 1 9 10.5 52.5 21.3 1293.0 1314.2
White 10 5 0 5 5.0 50.0 0.0 1296.5 1296.5
Black 10 5 1 4 5.5 55.0 42.5 1289.4 1331.9
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 207 101 11 95 106.5 51.4 12.3 1205.9 1218.2
White 103 50 8 45 54.0 52.4 20.6 1193.3 1213.9
Black 104 51 3 50 52.5 50.5 4.1 1218.4 1222.5
Standard All 203 100 11 92 105.5 52.0 16.7 1204.0 1220.7
White 101 49 8 44 53.0 52.5 21.0 1193.4 1214.5
Black 102 51 3 48 52.5 51.5 12.5 1214.4 1226.9
Rapid All 4 1 0 3 1.0 25.0 -212.5 1303.3 1090.8
White 2 1 0 1 1.0 50.0 0.0 1184.5 1184.5
Black 2 0 0 2 0.0 0.0 -425.0 1422.2 997.2
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 210092704 Deysel, H (Hannah) 4 1.0 1 0 3 25.0 1193.4 -212.5 980.9 View list
2 110091688 Kwak, J (Jaeson) 3 3.0 3 0 0 100.0 1259.6 425.0 1684.6 View list
3 2110107817 Onyemah, I (Ifeoma) 3 2.5 2 1 0 83.3 1145.9 283.3 1429.2 View list
4 1090130898 Mesele, O (Oboitshepo) 3 1.0 1 0 2 33.3 1169.7 -141.7 1028.0 View list
5 110086360 Wang, Y (Yiren) 3 0.0 0 0 3 0.0 1133.5 -425.0 708.5 View list
6 2100105562 Li, Y (Yangyang) 2 2.0 2 0 0 100.0 1110.7 425.0 1535.7 View list
7 1100099598 Rossouw, A (Andries Jacobus Putter) 2 1.5 1 1 0 75.0 1141.2 212.5 1353.7 View list
8 110091691 Barker, R (Ryan) 2 1.0 1 0 1 50.0 1211.7 0.0 1211.7 View list
9 1120119998 Horne, K (Kian Louis) 2 1.0 1 0 1 50.0 1325.6 0.0 1325.6 View list
10 2100100924 Kayiya, A (Anashe) 2 1.0 1 0 1 50.0 1150.7 0.0 1150.7 View list
11 1100141972 Mallach, M (Matthew) 2 1.0 1 0 1 50.0 1276.1 0.0 1276.1 View list
12 1100099279 Oosthuizen, J (Juan) 2 1.0 1 0 1 50.0 1168.8 0.0 1168.8 View list
13 2130130731 Papanicolaou, M (Mila) 2 1.0 1 0 1 50.0 1349.1 0.0 1349.1 View list
14 1110134886 Thomson-Selibowitz, R (Ryder) 2 1.0 1 0 1 50.0 1347.2 0.0 1347.2 View list
15 1130140205 Wessels, T (Theodore) 2 1.0 1 0 1 50.0 1287.8 0.0 1287.8 View list
16 1070118239 Williams, ZJ (Zachary John) 2 1.0 1 0 1 50.0 1132.1 0.0 1132.1 View list
17 2080134889 Yegay, E (Erika) 2 1.0 1 0 1 50.0 1116.1 0.0 1116.1 View list
18 1130130727 Badenhorst, M (Matthew) 2 0.0 0 0 2 0.0 1211.7 -425.0 786.7 View list
19 1100133076 Hazelton-Lagarrigue, V (Vincent) 2 0.0 0 0 2 0.0 1227.1 -425.0 802.1 View list
20 108082807 Joseph, J (Jamie) 2 0.0 0 0 2 0.0 1161.2 -425.0 736.2 View list