Player Page

Grobler, J (Joshua)
Dob: 2013/05/15 (U12)
Gender: Male
Chess SA id: 1130134049
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2024/10/26 (28 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 rating1239.9
Current Weighted rating1202.5
Current Weighted performance1221.9
Current official/published rating (highest between Raw, WR and WP)1239.9
Current highest rating achieved1259.1
Current floor (min rating allowed)759.1
Current K-factor36
Games played this month5
Score (S)3.5
Expected score (We)1.98
Difference (S-We)1.26
Current Raw change (no limits, including tournament time weight)45.4
Current min/max change allowed (with limits)±156.7
Current Raw change used (final)45.4
Projected new Raw rating1285.3
Projected new Weighed rating1107.5
Projected new Weighted performance1309.2
Projected new final Raw rating (if new WP > new Raw)1309.2
Projected new highest rating1309.2
Projected new floor809.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1309.2
Projected effective change (new Official - current Official)+69.3
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 rating1237.0
Current Weighted rating1200.7
Current Weighted performance1221.9
Current official/published rating (highest between Raw, WR and WP)1237.0
Current highest rating achieved1270.8
Current floor (min rating allowed)770.8
Current K-factor36
Games played this month5
Score (S)3.5
Expected score (We)1.96
Difference (S-We)1.54
Current Raw change (no limits, including tournament time weight)55.4
Current min/max change allowed (with limits)±157.3
Current Raw change used (final)55.4
Projected new Raw rating1292.4
Projected new Weighed rating1106.1
Projected new Weighted performance1309.2
Projected new final Raw rating (if new WP > new Raw)1309.2
Projected new highest rating1309.2
Projected new floor809.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1309.2
Projected effective change (new Official - current Official)+72.2
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 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
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
Tournament: Lardies Ope 2024 (U12)
Start: 2024/10/26  End: 2024/10/26  Host: GTP  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 3.5
Main rating: 1239.9  Rating gain/loss: 45.4
Type rating: 1237.0  Rating gain/loss: 55.4
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
7 Lardies Ope 2024 (U12) 2024/10/26 2024/10/26 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1239.9 1237.0 Analysis
6 Laerskool Doringkloof Primary Open Chess Tournament 2024 (U12) 2024/10/19 2024/10/19 Tshwane (GTP) Standard 60 0.83 5 5 1.0 1231.3 1234.1 Analysis
5 2024 Gauteng North Open Chess Tournament (U12) 2024/10/05 2024/10/06 Tshwane (GTP) Standard 90 0.94 5 4 2.0 1231.3 1234.1 Analysis
4 Gauteng Schools Individuals Finals 2024 (U11 Boys) 2024/08/16 2024/08/16 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1201.7 1198.8 Analysis
3 D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) 2024/08/03 2024/08/03 Tshwane (GTP) Standard 60 0.83 5 5 0.0 1259.1 1270.8 Analysis
2 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) 2024/05/11 2024/05/11 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1196.7 1196.0 Analysis
1 2024 Constantiapark Open (D2) 2024/02/17 2024/02/17 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1163.8 1154.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
13 Lardies Ope 2024 (U12) 2024/10/26 2024/10/26 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1239.9 1237.0 Analysis
12 Laerskool Doringkloof Primary Open Chess Tournament 2024 (U12) 2024/10/19 2024/10/19 Tshwane (GTP) Standard 60 0.83 5 5 1.0 1231.3 1234.1 Analysis
11 2024 Gauteng North Open Chess Tournament (U12) 2024/10/05 2024/10/06 Tshwane (GTP) Standard 90 0.94 5 4 2.0 1231.3 1234.1 Analysis
10 Gauteng Schools Individuals Finals 2024 (U11 Boys) 2024/08/16 2024/08/16 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1201.7 1198.8 Analysis
9 D4 Tshwane South District Schools Teams Chess Tournament 2024 (U11A) 2024/08/03 2024/08/03 Tshwane (GTP) Standard 60 0.83 5 5 0.0 1259.1 1270.8 Analysis
8 2024 Tshwane South School District CLOSED Individual Championships (U11 Mixed) 2024/05/11 2024/05/11 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1196.7 1196.0 Analysis
7 2024 Constantiapark Open (D2) 2024/02/17 2024/02/17 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1163.8 1154.4 Analysis
6 2023 Tshwane South School District CLOSED League Championship (U11) 2023/07/29 2023/07/29 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1164.8 1154.8 Analysis
5 2023 Tshwane South School District CLOSED Individual Championships (U11 Open) 2023/04/22 2023/04/22 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1163.5 1152.4 Analysis
4 D4 Play Offs 2022 (U9) 2022/07/30 2022/07/30 Tshwane (GTP) Standard 60 0.83 5 5 1.5 1180.4 1174.0 Analysis
3 CP Ope 2022 (D2) 2022/02/19 2022/02/19 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1187.0 1183.6 Analysis
2 2021 Chris Greyling Open Tournament (E) 2021/05/08 2021/05/08 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1171.1 1163.6 Analysis
1 2021 Blou Bul Tournament (E) 2021/04/10 2021/04/10 Mangaung (FMB) 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 34 16 1 17 16.5 48.5 -12.5 1323.0 1310.5
White 18 11 1 6 11.5 63.9 118.1 1304.3 1422.3
Black 16 5 0 11 5.0 31.3 -159.4 1344.1 1184.8
Standard All 34 16 1 17 16.5 48.5 -12.5 1323.0 1310.5
White 18 11 1 6 11.5 63.9 118.1 1304.3 1422.3
Black 16 5 0 11 5.0 31.3 -159.4 1344.1 1184.8
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 64 28 3 33 29.5 46.1 -33.2 1268.3 1235.1
White 34 18 2 14 19.0 55.9 50.0 1262.5 1312.5
Black 30 10 1 19 10.5 35.0 -127.5 1274.8 1147.3
Standard All 64 28 3 33 29.5 46.1 -33.2 1268.3 1235.1
White 34 18 2 14 19.0 55.9 50.0 1262.5 1312.5
Black 30 10 1 19 10.5 35.0 -127.5 1274.8 1147.3
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1130134043 De Bruin, H (Hanno) 3 2.5 2 1 0 83.3 1186.0 283.3 1469.4 View list
2 2140158377 Grobbelaar, M (Mienje) 2 0.5 0 1 1 25.0 1249.5 -212.5 1037.0 View list
3 1140308980 Huang, L (Li-Hsiang) 1 1.0 1 0 0 100.0 1231.3 425.0 1656.3 View list
4 2130130100 De Witt, K (Karli) 1 1.0 1 0 0 100.0 1171.1 425.0 1596.1 View list
5 1120112330 De Kock, C (Chris-Jan) 1 1.0 1 0 0 100.0 1164.8 425.0 1589.8 View list
6 1130134041 Botha, L (Logan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
7 2130134040 Botha, L (Lincke) 1 1.0 1 0 0 100.0 1171.1 425.0 1596.1 View list
8 1100134224 Botha, J (Jayden) 1 1.0 1 0 0 100.0 1187.0 425.0 1612.0 View list
9 1130144509 Bolleurs, M (Matthew) 1 1.0 1 0 0 100.0 1196.7 425.0 1621.7 View list
10 1130304575 Kekana, K (Karabo) 1 1.0 1 0 0 100.0 1196.7 425.0 1621.7 View list
11 1130310487 Kamal, L (Lebohang) 1 1.0 1 0 0 100.0 1201.7 425.0 1626.7 View list
12 1120139981 Kirstein, T (Tinus Ederich) 1 1.0 1 0 0 100.0 1163.5 425.0 1588.5 View list
13 1130310495 Mashianoke, K (Kgaugelo) 1 1.0 1 0 0 100.0 1201.7 425.0 1626.7 View list
14 1120159048 Motsepe, K (Khuvora) 1 1.0 1 0 0 100.0 1164.8 425.0 1589.8 View list
15 2140135766 Mulamattathil, R (Raynah) 1 1.0 1 0 0 100.0 1163.8 425.0 1588.8 View list
16 1130143052 Netshimboni, J (Junior) 1 1.0 1 0 0 100.0 1180.4 425.0 1605.4 View list
17 1130310500 Ngwenya, K (Khanyiseni) 1 1.0 1 0 0 100.0 1201.7 425.0 1626.7 View list
18 1130313137 Pienaar, D (Daniel) 1 1.0 1 0 0 100.0 1239.9 425.0 1664.9 View list
19 1140192167 Premkumar, K (Krish) 1 1.0 1 0 0 100.0 1163.8 425.0 1588.8 View list
20 1120141532 Pretorius, W (Wihan) 1 1.0 1 0 0 100.0 1163.5 425.0 1588.5 View list