Player Page

Jonker, J (Jaen-Pierre)
Dob: 2007/04/14 (U18)
Gender: Male
Chess SA id: 107065190
FIDE id:
Region: Sedibeng (GSV)
Citizen: RSA
Title(s):
Last active: 2024/08/12 (58 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 rating1194.3
Current Weighted rating1221.4
Current Weighted performance1145.3
Current official/published rating (highest between Raw, WR and WP)1221.4
Current highest rating achieved1357.1
Current floor (min rating allowed)857.1
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)±167.2
Current Raw change used (final)0.0
Projected new Raw rating1194.3
Projected new Weighed rating1120.7
Projected new Weighted performance1145.3
Projected new final Raw rating (if new WP > new Raw)1194.3
Projected new highest rating1357.1
Projected new floor857.1
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1194.3
Projected effective change (new Official - current Official)-27.1
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 rating1216.8
Current Weighted rating1243.4
Current Weighted performance1133.9
Current official/published rating (highest between Raw, WR and WP)1243.4
Current highest rating achieved1357.7
Current floor (min rating allowed)857.7
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)±161.9
Current Raw change used (final)0.0
Projected new Raw rating1216.8
Projected new Weighed rating1141.4
Projected new Weighted performance1133.9
Projected new final Raw rating (if new WP > new Raw)1216.8
Projected new highest rating1357.7
Projected new floor857.7
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1216.8
Projected effective change (new Official - current Official)-26.6
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 rating840.4
Current Weighted rating796.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)840.4
Current highest rating achieved840.4
Current floor (min rating allowed)340.4
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)±276.8
Current Raw change used (final)0.0
Projected new Raw rating840.4
Projected new Weighed rating734.0
Projected new Weighted performance791.8
Projected new final Raw rating (if new WP > new Raw)840.4
Projected new highest rating840.4
Projected new floor340.4
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)840.4
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 rating764.0
Current Weighted rating764.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)764.0
Current highest rating achieved764.0
Current floor (min rating allowed)500.0
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)±308.6
Current Raw change used (final)0.0
Projected new Raw rating764.0
Projected new Weighed rating702.9
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating764.0
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)764.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
5 Sedibeng West District Schools Chess Team's Championships 2024 (U19) 2024/08/12 2024/08/12 Sedibeng (GSV) Standard 60 0.83 5 4 2.5 1164.1 1183.7 Analysis
4 Eureka Open 27 July 2024 (D) 2024/07/27 2024/07/27 Sedibeng (GSV) Standard 60 0.83 5 5 2.5 1166.9 1185.5 Analysis
3 Midvaal Winter Classic 13 July 2024 (B) 2024/07/13 2024/07/13 Sedibeng (GSV) Rapid 30 0.60 7 6 1.5 1166.9 787.6 Analysis
2 Valia's Open 2024 (A) 2024/03/02 2024/03/02 Sedibeng (GSV) Standard 61 0.84 5 4 0.5 1192.3 1223.7 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U18A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 0.0 1254.2 1300.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
44 Sedibeng West District Schools Chess Team's Championships 2024 (U19) 2024/08/12 2024/08/12 Sedibeng (GSV) Standard 60 0.83 5 4 2.5 1164.1 1183.7 Analysis
43 Eureka Open 27 July 2024 (D) 2024/07/27 2024/07/27 Sedibeng (GSV) Standard 60 0.83 5 5 2.5 1166.9 1185.5 Analysis
42 Midvaal Winter Classic 13 July 2024 (B) 2024/07/13 2024/07/13 Sedibeng (GSV) Rapid 30 0.60 7 6 1.5 1166.9 787.6 Analysis
41 Valia's Open 2024 (A) 2024/03/02 2024/03/02 Sedibeng (GSV) Standard 61 0.84 5 4 0.5 1192.3 1223.7 Analysis
40 2024 Gauteng Inter-Region Chess Championship (U18A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 0.0 1254.2 1300.0 Analysis
39 Dr Pieter Hangelbroek Rapid 2023 (A) 2023/10/28 2023/10/28 Sedibeng (GSV) Rapid 30 0.60 5 5 1.5 1294.2 782.4 Analysis
38 2023 Gauteng Top Schools (U17 Mixed) 2023/08/19 2023/08/19 West Rand (GWR) Standard 60 0.83 5 5 2.5 1266.4 1268.0 Analysis
37 2023 Sedibeng West District Schools Chess Tournament (U17+U19) 2023/08/12 2023/08/12 Sedibeng (GSV) Standard 60 0.83 5 4 2.0 1266.4 1268.0 Analysis
36 Overvaal Ope Jul 2023 (A) 2023/07/22 2023/07/22 Sedibeng (GSV) Standard 60 0.83 5 4 1.0 1293.9 1305.1 Analysis
35 VaalPark Primary Open Chess 2023 (A) 2023/06/16 2023/06/16 Sedibeng (GSV) Rapid 45 0.74 5 4 1.0 1314.1 764.0 Analysis
34 D8 Schools Individuals 2023 (U18 Boys) 2023/05/20 2023/05/20 West Rand (GWR) Standard 60 0.83 5 4 2.0 1357.1 1357.7 Analysis
33 Driehoek Open Chess Tournament 2023 (A) 2023/05/13 2023/05/13 Sedibeng (GSV) Standard 60 0.83 5 4 1.5 1357.1 1357.7 Analysis
32 Valia's Chess Tournament 2023 (A) 2023/05/06 2023/05/06 Sedibeng (GSV) Standard 60 0.83 5 5 1.5 1357.1 1357.7 Analysis
31 Hoerskool Drie Riviere Open 2023 (A) 2023/03/11 2023/03/11 Sedibeng (GSV) Standard 60 0.83 5 5 3.0 1352.0 1352.7 Analysis
30 2022 Gauteng Schools Team Championships (U17 Open) 2022/08/26 2022/08/26 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1348.4 1349.8 Analysis
29 Carel`s Chess Open 2022 (B) 2022/03/05 2022/03/05 Sedibeng (GSV) Standard 61 0.83 5 5 4.0 1315.5 1310.9 Analysis
28 Heidelberg Klub Open 2002 (A+B) 2022/02/19 2022/02/19 Sedibeng (GSV) Standard 60 0.83 5 4 1.0 1328.0 1327.1 Analysis
27 Hoerskool Drie Riviere 2020 (A+B) 2020/03/07 2020/03/07 Sedibeng (GSV) Standard 61 0.83 5 5 4.0 1308.6 1303.7 Analysis
26 AG Visser 2020 (A+B) 2020/02/22 2020/02/22 Sedibeng (GSV) Standard 61 0.83 5 5 2.5 1314.9 1310.2 Analysis
25 2019 South African Junior Team Championships (U14C) 2020/01/04 2020/01/08 4 Knights (4K) Standard 120 1.00 7 7 5.5 1286.8 1277.4 Analysis
123
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 24 5 4 15 7.0 29.2 -177.1 1302.8 1125.7
White 12 1 2 9 2.0 16.7 -283.3 1293.3 1009.9
Black 12 4 2 6 5.0 41.7 -70.8 1312.4 1241.5
Standard All 18 4 3 11 5.5 30.6 -165.3 1286.5 1121.2
White 9 1 1 7 1.5 16.7 -283.3 1278.9 995.6
Black 9 3 2 4 4.0 44.4 -47.2 1294.0 1246.8
Rapid All 6 1 1 4 1.5 25.0 -212.5 1351.8 1139.3
White 3 0 1 2 0.5 16.7 -283.3 1336.2 1052.9
Black 3 1 0 2 1.0 33.3 -141.7 1367.5 1225.8
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 214 110 20 84 120.0 56.1 51.6 1118.6 1170.2
White 105 52 11 42 57.5 54.8 40.5 1104.0 1144.4
Black 109 58 9 42 62.5 57.3 62.4 1132.7 1195.1
Standard All 199 107 18 74 116.0 58.3 70.5 1105.7 1176.2
White 97 52 9 36 56.5 58.2 70.1 1090.9 1161.0
Black 102 55 9 38 59.5 58.3 70.8 1119.9 1190.7
Rapid All 15 3 2 10 4.0 26.7 -198.3 1289.0 1090.7
White 8 0 2 6 1.0 12.5 -318.8 1263.0 944.3
Black 7 3 0 4 3.0 42.9 -60.7 1318.8 1258.1
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 206066092 Van Zyl, I (Ilane) 4 2.0 2 0 2 50.0 1122.9 0.0 1122.9 View list
2 207064041 Coetzee, A (Anika) 3 2.0 2 0 1 66.7 1090.7 141.7 1232.4 View list
3 107085046 Hanekom, J (Jayden) 3 2.0 2 0 1 66.7 994.5 141.7 1136.1 View list
4 206091403 Visser, TM (Tracy) 3 2.0 2 0 1 66.7 1071.0 141.7 1212.7 View list
5 104086509 Khumalo, N (Nkosinathi) 3 1.5 1 1 1 50.0 1305.4 0.0 1305.4 View list
6 207061368 Goosen, M (Mignon) 3 1.0 0 2 1 33.3 1276.6 -141.7 1134.9 View list
7 1060112904 Mini, S (Siboniso) 3 0.0 0 0 3 0.0 1296.6 -425.0 871.6 View list
8 172037577 Theron, A (Andre) 3 0.0 0 0 3 0.0 1325.3 -425.0 900.3 View list
9 105085039 Hanekom, D (Dylan) 2 2.0 2 0 0 100.0 954.8 425.0 1379.8 View list
10 2040115831 Malefane, P (Praise) 2 2.0 2 0 0 100.0 1145.0 425.0 1570.0 View list
11 107048334 Neves, TT (Tremayne) 2 2.0 2 0 0 100.0 942.8 425.0 1367.8 View list
12 106056513 Human, PMB (Petrus) 2 1.5 1 1 0 75.0 1167.0 212.5 1379.5 View list
13 1050108484 Bholo, SV (Sicelo Vuyo) 2 1.0 1 0 1 50.0 1251.7 0.0 1251.7 View list
14 205081219 Marema, P (Phindile) 2 1.0 1 0 1 50.0 1070.3 0.0 1070.3 View list
15 105044684 Nel, A (Altus) 2 1.0 1 0 1 50.0 1099.2 0.0 1099.2 View list
16 172030853 Pretorius, HS (Hendrik) 2 1.0 1 0 1 50.0 1323.1 0.0 1323.1 View list
17 107064054 Tabane, G (Gomolemo) 2 1.0 1 0 1 50.0 997.8 0.0 997.8 View list
18 208061285 Van Der Net, ME (Mariel) 2 1.0 1 0 1 50.0 1108.7 0.0 1108.7 View list
19 105075205 Van Rhyn, J (Josh) 2 1.0 1 0 1 50.0 808.4 0.0 808.4 View list
20 207068593 Griesel, ZC (Zandrie C) 2 1.0 0 2 0 50.0 808.4 0.0 808.4 View list