Player Page

Botha, JF (Julian)
Dob: 1973/07/30 (Adult)
Gender: Male
Chess SA id: 173086742
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s): RA
Last active: 2024/02/17 (92 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 rating1156.9
Curent Weighted rating1106.7
Curent Weighted performance1146.1
Current official/published rating (highest between Raw, WR and WP)1156.9
Current floor (min rating allowed)656.9
Current highest rating achieved1156.9
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)±176.3
Current Raw change used (final)0.0
Projected new Raw rating1156.9
Projected new Weighed rating1113.0
Projected new Weighted performance1146.1
Projected new official/published rating (highest between new Raw, new WR and new WP)1156.9
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1156.9
Projected new floor656.9
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 rating1070.8
Curent Weighted rating1054.2
Curent Weighted performance776.4
Current official/published rating (highest between Raw, WR and WP)1070.8
Current floor (min rating allowed)570.8
Current highest rating achieved1070.8
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)±199.3
Current Raw change used (final)0.0
Projected new Raw rating1070.8
Projected new Weighed rating1056.6
Projected new Weighted performance776.4
Projected new official/published rating (highest between new Raw, new WR and new WP)1070.8
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1070.8
Projected new floor570.8
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 rating1000.8
Curent Weighted rating948.6
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1000.8
Current floor (min rating allowed)500.8
Current highest rating achieved1000.8
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)±220.2
Current Raw change used (final)0.0
Projected new Raw rating1000.8
Projected new Weighed rating955.3
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1000.8
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1000.8
Projected new floor500.8
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 rating823.6
Curent Weighted rating823.6
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)823.6
Current floor (min rating allowed)500.8
Current highest rating achieved823.6
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)±283.5
Current Raw change used (final)0.0
Projected new Raw rating823.6
Projected new Weighed rating823.6
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)823.6
Projected effective change (new Official - current Official)=0.0
Projected new highest rating823.6
Projected new floor500.8
Projected new K-facor40
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 Gear Up Mzansi Rapid 2024 (Advanced) 2024/02/17 2024/02/17 Johannesburg Metro (GJM) Rapid 35 0.66 5 5 2.0 1125.2 955.2 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
11 Gear Up Mzansi Rapid 2024 (Advanced) 2024/02/17 2024/02/17 Johannesburg Metro (GJM) Rapid 35 0.66 5 5 2.0 1125.2 955.2 Analysis
10 Mzansi Spring Rapid 2023 2023/09/02 2023/09/02 Johannesburg Metro (GJM) Rapid 15 0.39 7 7 2.0 1107.9 949.6 Analysis
9 JMC Trinity Little Falls 2023 (B) 2023/07/02 2023/07/02 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.5 1067.7 1016.0 Analysis
8 Mzansi Rapid 2023 (Intermediate) 2023/02/04 2023/02/04 Johannesburg Metro (GJM) Rapid 25 0.54 6 6 3.5 1012.0 825.6 Analysis
7 JMC Trials 1 - Laerskool Fontainebleau 2022 (Open) 2022/07/24 2022/07/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 0.5 1023.6 1030.0 Analysis
6 JNW Chess Club - Muldersdrif 2019 (B) 2019/10/18 2019/10/18 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 970.5 964.8 Analysis
5 JNW Club - Trinityhouse Little Falls Open 2019 (Adult) 2019/02/23 2019/02/23 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 914.4 932.0 Analysis
4 South African Junior Blitz 2018 (Open) 2018/12/19 2018/12/19 4 Knights (4K) Blitz 5 0.18 7 6 0.0 914.6 825.6 Analysis
3 JNW Club - Maragon Open 2018 (B) 2018/08/04 2018/08/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.5 890.4 905.6 Analysis
2 JNW Club - Linden Open 2018 (B) 2018/04/14 2018/04/14 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 835.6 838.4 Analysis
1 JNW Club - Trinityhouse Randpark Ridge Open 2018 (B) 2018/03/24 2018/03/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.0 825.6 825.6 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 5 2 0 3 2.0 40.0 -85.0 1423.6 1338.6
White 3 1 0 2 1.0 33.3 -141.7 1431.2 1289.6
Black 2 1 0 1 1.0 50.0 0.0 1412.1 1412.1
Standard 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
Rapid All 5 2 0 3 2.0 40.0 -85.0 1423.6 1338.6
White 3 1 0 2 1.0 33.3 -141.7 1431.2 1289.6
Black 2 1 0 1 1.0 50.0 0.0 1412.1 1412.1
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
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 59 16 7 36 19.5 33.1 -144.1 1323.3 1179.3
White 28 9 4 15 11.0 39.3 -91.1 1328.1 1237.1
Black 31 7 3 21 8.5 27.4 -191.9 1319.0 1127.1
Standard All 35 9 6 20 12.0 34.3 -133.6 1235.3 1101.7
White 16 5 4 7 7.0 43.8 -53.1 1226.5 1173.3
Black 19 4 2 13 5.0 26.3 -201.3 1242.7 1041.4
Rapid All 18 7 1 10 7.5 41.7 -70.8 1412.4 1341.6
White 9 4 0 5 4.0 44.4 -47.2 1400.2 1353.0
Black 9 3 1 5 3.5 38.9 -94.4 1424.7 1330.3
Blitz All 6 0 0 6 0.0 0.0 -425.0 1569.6 1144.6
White 3 0 0 3 0.0 0.0 -425.0 1654.3 1229.3
Black 3 0 0 3 0.0 0.0 -425.0 1484.9 1059.9
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1140135557 Thorulsley, K (Kairaav) 2 1.5 1 1 0 75.0 1068.6 212.5 1281.1 View list
2 1770107734 Badenhorst, N (Nicolaas Jacobus) 2 1.0 1 0 1 50.0 1011.2 0.0 1011.2 View list
3 204057236 Naicker, K (Kerri-Anne) 2 0.5 0 1 1 25.0 863.0 -212.5 650.5 View list
4 2110143800 Naidoo, D (Dhiya) 2 0.0 0 0 2 0.0 1039.8 -425.0 614.8 View list
5 1050113409 Harris, O (Oliver) 1 1.0 1 0 0 100.0 970.5 425.0 1395.5 View list
6 1110133417 Govender, C (Cadin) 1 1.0 1 0 0 100.0 1012.0 425.0 1437.0 View list
7 204079859 Fauconier, C (Caley) 1 1.0 1 0 0 100.0 970.5 425.0 1395.5 View list
8 2690110065 Dinham, J (Jenny) 1 1.0 1 0 0 100.0 914.4 425.0 1339.4 View list
9 208071873 Chinoruma, T (Tawana) 1 1.0 1 0 0 100.0 890.4 425.0 1315.4 View list
10 1990099595 Bogdanov, P (Peter) 1 1.0 1 0 0 100.0 825.6 425.0 1250.6 View list
11 1100113805 Bijker, W (Waldo) 1 1.0 1 0 0 100.0 1012.0 425.0 1437.0 View list
12 104003385 Breckenridge, D (Daniel) 1 1.0 1 0 0 100.0 835.6 425.0 1260.6 View list
13 207069536 Boshoma, C (Chisomo) 1 1.0 1 0 0 100.0 835.6 425.0 1260.6 View list
14 2120130719 Jacobs, L (Lillith) 1 1.0 1 0 0 100.0 1067.7 425.0 1492.7 View list
15 1710110066 Moolman, C (Conri) 1 1.0 1 0 0 100.0 914.4 425.0 1339.4 View list
16 194030356 Pillay, N (Nico) 1 1.0 1 0 0 100.0 1125.2 425.0 1550.2 View list
17 1120161577 Tierney, G (Grayson) 1 1.0 1 0 0 100.0 1107.9 425.0 1532.9 View list
18 1740149136 Whittaker, G (Gregory) 1 1.0 1 0 0 100.0 1012.0 425.0 1437.0 View list
19 1100133076 Hazelton-Lagarrigue, V (Vincent) 1 0.5 0 1 0 50.0 1067.7 0.0 1067.7 View list
20 175073191 Bester, M (Morne) 1 0.5 0 1 0 50.0 914.4 0.0 914.4 View list