Player Page

Johnstone, J (Jessica)
Dob: 2009/05/27 (U16)
Gender: Female
Chess SA id: 209073138
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2023/02/05 (666 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 rating970.8
Current Weighted rating970.7
Current Weighted performance544.6
Current official/published rating (highest between Raw, WR and WP)970.8
Current highest rating achieved1037.4
Current floor (min rating allowed)537.4
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)±229.8
Current Raw change used (final)0.0
Projected new Raw rating970.8
Projected new Weighed rating893.1
Projected new Weighted performance544.6
Projected new final Raw rating (if new WP > new Raw)970.8
Projected new highest rating1037.4
Projected new floor537.4
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)970.8
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 rating967.5
Current Weighted rating967.4
Current Weighted performance544.6
Current official/published rating (highest between Raw, WR and WP)967.5
Current highest rating achieved1025.8
Current floor (min rating allowed)525.8
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)±230.9
Current Raw change used (final)0.0
Projected new Raw rating967.5
Projected new Weighed rating890.1
Projected new Weighted performance544.6
Projected new final Raw rating (if new WP > new Raw)967.5
Projected new highest rating1025.8
Projected new floor525.8
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)967.5
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 rating598.4
Current Weighted rating598.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)598.4
Current highest rating achieved598.4
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)±390.7
Current Raw change used (final)0.0
Projected new Raw rating598.4
Projected new Weighed rating550.5
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating598.4
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)598.4
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 rating598.4
Current Weighted rating598.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)598.4
Current highest rating achieved598.4
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)±390.7
Current Raw change used (final)0.0
Projected new Raw rating598.4
Projected new Weighed rating550.5
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating598.4
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)598.4
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
21 2023 Piet Robbertse Fide Rated Open Chess Tournament (D) 2023/02/04 2023/02/05 Tshwane (GTP) Standard 90 0.94 5 5 2.0 945.6 940.7 Analysis
20 2021 Registration Tournament (D) 2021/03/13 2021/03/13 Tshwane (GTP) Standard 60 0.83 5 5 2.0 907.1 890.7 Analysis
19 2019 Etienne Lewis Trials (U12 Girls) 2019/08/30 2019/09/01 Tshwane (GTP) Standard 120 1.00 7 7 0.0 1004.3 983.1 Analysis
18 2019 Alekhine Open (D) 2019/08/09 2019/08/10 Tshwane (GTP) Standard 120 1.00 5 5 2.0 1037.4 1022.3 Analysis
17 2019 Jacaranda Round Robin (L) 2019/08/03 2019/08/03 Tshwane (GTP) Standard 60 0.83 5 5 1.0 1037.4 1022.3 Analysis
16 2019 Swartkop Open (D) 2019/06/15 2019/06/15 Tshwane (GTP) Standard 60 0.83 5 5 3.0 982.1 967.7 Analysis
15 2019 Capablanca Chess Festival (Swiss D) 2019/04/19 2019/04/21 Tshwane (GTP) Standard 90 0.94 7 7 2.0 1028.7 1016.9 Analysis
14 2019 Waterkloof Open (D) 2019/03/02 2019/03/03 Tshwane (GTP) Standard 90 0.94 5 5 3.0 1011.4 995.3 Analysis
13 2019 TuksChess Open (C) 2019/02/23 2019/02/23 Tshwane (GTP) Standard 60 0.83 5 5 2.0 999.8 979.3 Analysis
12 2018 Wild Card Chess Championships (U10 Girls) 2018/12/21 2018/12/24 4 Knights (4K) Standard 120 1.00 7 7 3.0 1007.0 990.1 Analysis
11 South African Junior Team Championships 2018 (U10 Girls) 2018/12/16 2018/12/20 4 Knights (4K) Standard 120 1.00 7 5 3.0 1007.0 990.1 Analysis
10 2018 Tshwane Inter Region (U10C) 2018/12/01 2018/12/01 Cape Town (WCT) Standard 60 0.83 5 5 2.0 1007.0 990.1 Analysis
9 2018 Lardies Ope (D) 2018/10/27 2018/10/27 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1033.2 1025.8 Analysis
8 2018 Centurion Chess Club Open (D) 2018/09/29 2018/09/29 Tshwane (GTP) Standard 60 0.83 5 5 3.0 833.6 829.6 Analysis
7 2018 Etienne Lewis Trials (U10 Girls) 2018/08/31 2018/09/02 Tshwane (GTP) Standard 120 1.00 7 7 4.0 833.6 829.6 Analysis
6 2018 Alekhine Open (D) 2018/08/09 2018/08/11 Tshwane (GTP) Standard 90 0.94 6 6 3.0 807.0 805.4 Analysis
5 2018 Menlo Open Chess Tournament (D) 2018/07/21 2018/07/21 Tshwane (GTP) Standard 60 0.83 5 5 3.0 686.2 686.8 Analysis
4 2018 Capablanca Swiss (D) 2018/04/27 2018/04/27 Tshwane (GTP) Standard 90 0.94 5 5 2.0 707.6 707.2 Analysis
3 2018 Crawford Open (D) 2018/03/24 2018/03/24 Tshwane (GTP) Standard 60 0.83 5 5 2.0 704.9 704.0 Analysis
2 2018 Constantia Park Open (D) 2018/02/10 2018/02/10 Tshwane (GTP) Standard 60 0.83 5 5 3.0 705.6 705.6 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main 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
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 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 116 53 0 63 53.0 45.7 -36.6 988.3 951.7
White 55 21 0 34 21.0 38.2 -100.5 1014.8 914.4
Black 61 32 0 29 32.0 52.5 20.9 964.5 985.4
Standard All 116 53 0 63 53.0 45.7 -36.6 988.3 951.7
White 55 21 0 34 21.0 38.2 -100.5 1014.8 914.4
Black 61 32 0 29 32.0 52.5 20.9 964.5 985.4
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 2100099819 Lombard, A (Anjubelle Ttalise) 3 3.0 3 0 0 100.0 775.6 425.0 1200.6 View list
2 210088596 Louw, N (Nova) 3 3.0 3 0 0 100.0 748.0 425.0 1173.0 View list
3 109076153 De Jager, J (Jacques) 2 2.0 2 0 0 100.0 1009.8 425.0 1434.8 View list
4 1080108319 Dladla, L (Luvo) 2 2.0 2 0 0 100.0 1020.0 425.0 1445.0 View list
5 209093189 Van Der Merwe, D (Danika) 2 2.0 2 0 0 100.0 920.3 425.0 1345.3 View list
6 110089426 Van Der Walt, AJ (Antonie) 2 2.0 2 0 0 100.0 852.3 425.0 1277.3 View list
7 1100103919 Cilliers, WC (Willem Carel) 2 0.0 0 0 2 0.0 1033.1 -425.0 608.1 View list
8 1100096766 Du Preez, J (Julian) 2 0.0 0 0 2 0.0 996.8 -425.0 571.8 View list
9 109086534 Erlank, BG (Brandon) 2 0.0 0 0 2 0.0 857.3 -425.0 432.3 View list
10 107079669 Fuhri, R (Ruben) 2 0.0 0 0 2 0.0 1009.8 -425.0 584.8 View list
11 109083426 Gerber, J (Juandre) 2 0.0 0 0 2 0.0 1003.4 -425.0 578.4 View list
12 108064862 Moolman, R (Reinhardt) 2 0.0 0 0 2 0.0 820.3 -425.0 395.3 View list
13 208059167 Oosthuizen, L (Luelsje) 2 0.0 0 0 2 0.0 1016.5 -425.0 591.5 View list
14 208048362 Reyneke, T (Talia) 2 0.0 0 0 2 0.0 855.0 -425.0 430.0 View list
15 2090099753 De Bruin, E (Elrise) 1 1.0 1 0 0 100.0 1007.0 425.0 1432.0 View list
16 108087840 De Beer, K (Kieron) 1 1.0 1 0 0 100.0 982.1 425.0 1407.1 View list
17 209084197 Crotz, K (Kirsten) 1 1.0 1 0 0 100.0 598.4 425.0 1023.4 View list
18 208087581 Combrink, H (Helen) 1 1.0 1 0 0 100.0 598.4 425.0 1023.4 View list
19 1080116366 Cloete, LM (Louise Mari) 1 1.0 1 0 0 100.0 982.1 425.0 1407.1 View list
20 109073377 Claassen, EG (Emileo) 1 1.0 1 0 0 100.0 1007.0 425.0 1432.0 View list