Player Page

Perkins, J (Jenna)
Dob: 2011/04/22 (U14)
Gender: Female
Chess SA id: 2110113534
FIDE id:
Region: Ekurhuleni (GE)
Citizen: RSA
Title(s):
Last active: 2024/10/04 (51 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 rating1378.1
Current Weighted rating1233.3
Current Weighted performance1390.6
Current official/published rating (highest between Raw, WR and WP)1390.6
Current highest rating achieved1378.1
Current floor (min rating allowed)878.1
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)±128.7
Current Raw change used (final)0.0
Projected new Raw rating1378.1
Projected new Weighed rating1135.9
Projected new Weighted performance1390.6
Projected new final Raw rating (if new WP > new Raw)1390.6
Projected new highest rating1390.6
Projected new floor890.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1390.6
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 rating1323.8
Current Weighted rating1227.9
Current Weighted performance1287.1
Current official/published rating (highest between Raw, WR and WP)1323.8
Current highest rating achieved1323.8
Current floor (min rating allowed)823.8
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)±139.0
Current Raw change used (final)0.0
Projected new Raw rating1323.8
Projected new Weighed rating1130.8
Projected new Weighted performance1287.1
Projected new final Raw rating (if new WP > new Raw)1323.8
Projected new highest rating1323.8
Projected new floor823.8
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1323.8
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 rating1260.7
Current Weighted rating1207.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1260.7
Current highest rating achieved1260.7
Current floor (min rating allowed)760.7
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)±152.1
Current Raw change used (final)0.0
Projected new Raw rating1260.7
Projected new Weighed rating1111.5
Projected new Weighted performance1002.4
Projected new final Raw rating (if new WP > new Raw)1260.7
Projected new highest rating1260.7
Projected new floor760.7
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1260.7
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
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 rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
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
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 Gauteng Top Schools 2024 (U13 Girls) 2024/10/04 2024/10/04 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1249.0 1251.4 Analysis
3 Wits Young Kudu 2024 (Primary School) 2024/09/14 2024/09/14 Johannesburg Metro (GJM) Rapid 30 0.60 5 5 4.0 1249.0 1205.6 Analysis
2 Gauteng Schools Individuals Finals 2024 (U13 Girls) 2024/08/16 2024/08/16 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1229.6 1226.6 Analysis
1 Ekurhuleni Trails 2 2024 (U14) 2024/07/27 2024/07/27 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1224.2 1221.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
9 Gauteng Top Schools 2024 (U13 Girls) 2024/10/04 2024/10/04 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1249.0 1251.4 Analysis
8 Wits Young Kudu 2024 (Primary School) 2024/09/14 2024/09/14 Johannesburg Metro (GJM) Rapid 30 0.60 5 5 4.0 1249.0 1205.6 Analysis
7 Gauteng Schools Individuals Finals 2024 (U13 Girls) 2024/08/16 2024/08/16 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1229.6 1226.6 Analysis
6 Ekurhuleni Trails 2 2024 (U14) 2024/07/27 2024/07/27 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1224.2 1221.6 Analysis
5 Chess Power House Festive Rapid 2023 (Grade 3-7) 2023/12/15 2023/12/15 Johannesburg Metro (GJM) Rapid 20 0.47 6 6 3.0 1213.7 1194.0 Analysis
4 Chess Molecules Rapid 2023 (High School Girls) 2023/09/23 2023/09/23 Ekurhuleni (GE) Rapid 30 0.60 5 4 2.0 1218.5 1200.0 Analysis
3 2023 Gauteng Top Schools (U13 Girls) 2023/08/18 2023/08/18 West Rand (GWR) Standard 60 0.83 5 5 3.0 1186.0 1180.8 Analysis
2 2019 Gauteng School League Finals (U9 Open) 2019/08/23 2019/08/23 Tshwane (GTP) Standard 60 0.83 5 4 2.0 1187.7 1182.8 Analysis
1 Ekurhuleni South School Chess 2019 (U9 Girls) 2019/05/11 2019/05/11 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 20 13 0 7 13.0 65.0 127.5 1301.1 1428.6
White 10 5 0 5 5.0 50.0 0.0 1332.1 1332.1
Black 10 8 0 2 8.0 80.0 255.0 1270.0 1525.0
Standard All 15 9 0 6 9.0 60.0 85.0 1311.6 1396.6
White 7 3 0 4 3.0 42.9 -60.7 1371.2 1310.5
Black 8 6 0 2 6.0 75.0 212.5 1259.4 1471.9
Rapid All 5 4 0 1 4.0 80.0 255.0 1269.5 1524.5
White 3 2 0 1 2.0 66.7 141.7 1240.9 1382.6
Black 2 2 0 0 2.0 100.0 425.0 1312.5 1737.5
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 44 25 0 19 25.0 56.8 58.0 1265.7 1323.6
White 22 12 0 10 12.0 54.5 38.6 1278.2 1316.9
Black 22 13 0 9 13.0 59.1 77.3 1253.1 1330.3
Standard All 29 16 0 13 16.0 55.2 44.0 1270.1 1314.1
White 14 7 0 7 7.0 50.0 0.0 1301.5 1301.5
Black 15 9 0 6 9.0 60.0 85.0 1240.8 1325.8
Rapid All 15 9 0 6 9.0 60.0 85.0 1257.1 1342.1
White 8 5 0 3 5.0 62.5 106.3 1237.6 1343.8
Black 7 4 0 3 4.0 57.1 60.7 1279.4 1340.1
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 2120105112 Bogaard, A (Anneke) 1 1.0 1 0 0 100.0 1229.6 425.0 1654.6 View list
2 2110140239 Barnard, A (Anjanka) 1 1.0 1 0 0 100.0 1186.0 425.0 1611.0 View list
3 1140191355 Bari, C (Chanakya) 1 1.0 1 0 0 100.0 1213.7 425.0 1638.7 View list
4 2140155741 Akole, S (Sara) 1 1.0 1 0 0 100.0 1213.7 425.0 1638.7 View list
5 2110160868 Chadoka, A (Angela) 1 1.0 1 0 0 100.0 1229.6 425.0 1654.6 View list
6 1120139501 Buitendag, D (Darius) 1 1.0 1 0 0 100.0 1224.2 425.0 1649.2 View list
7 2110113541 George, J (Jordan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
8 2130310452 Esterhuizen, R (Reese) 1 1.0 1 0 0 100.0 1249.0 425.0 1674.0 View list
9 2120139968 Engelbrecht, A (Amber-Lee) 1 1.0 1 0 0 100.0 1249.0 425.0 1674.0 View list
10 2130137395 Du Toit, M (Mine) 1 1.0 1 0 0 100.0 1249.0 425.0 1674.0 View list
11 1120191357 Dlamini, M (Mohlodi) 1 1.0 1 0 0 100.0 1213.7 425.0 1638.7 View list
12 2130160871 Dicks, C (Cheyanne) 1 1.0 1 0 0 100.0 1186.0 425.0 1611.0 View list
13 2120142703 Daubert, M (Michelle) 1 1.0 1 0 0 100.0 1186.0 425.0 1611.0 View list
14 2090162461 Kekane, T (Tshireketso) 1 1.0 1 0 0 100.0 1218.5 425.0 1643.5 View list
15 2090153970 Kiruri, C (Cynthia) 1 1.0 1 0 0 100.0 1218.5 425.0 1643.5 View list
16 2110310530 Maharajh, A (Aravia) 1 1.0 1 0 0 100.0 1229.6 425.0 1654.6 View list
17 2120310721 Mampane, O (Oratile) 1 1.0 1 0 0 100.0 1249.0 425.0 1674.0 View list
18 1110118120 Mashankane, K (Kutlwano) 1 1.0 1 0 0 100.0 1187.7 425.0 1612.7 View list
19 2150305779 Mashita, B (Bohlale) 1 1.0 1 0 0 100.0 1249.0 425.0 1674.0 View list
20 2120190113 Mkontwana, L (Lungiswa) 1 1.0 1 0 0 100.0 1249.0 425.0 1674.0 View list