Chess South Africa
Last updated:
Player Page
Home
Chess South Africa
Martins, J (Jana)
Dob:
2007/04/13 (U18)
Gender:
Female
Chess SA id:
207083509
FIDE id:
Martins
Region:
West Rand (GWR)
Citizen:
RSA
Title(s):
Last active:
2024/04/19 (68 days ago)
Ratings
The
Projected values
below are
NOT
the actual and official values as calculated by the Ratings Bureau.
Main
Standard
Rapid
Blitz
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 rating
950.6
Current Weighted rating
974.9
Current Weighted performance
841.4
Current official/published rating (highest between Raw, WR and WP)
974.9
Current highest rating achieved
995.3
Current floor (min rating allowed)
500.0
Current K-factor
40
Games played this month
0
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)
±236.6
Current Raw change used (final)
0.0
Projected new Raw rating
950.6
Projected new Weighed rating
897.2
Projected new Weighted performance
841.4
Projected new final Raw rating (if new WP > new Raw)
950.6
Projected new highest rating
995.3
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
950.6
Projected effective change (new Official - current Official)
-24.3
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 rating
949.2
Current Weighted rating
950.4
Current Weighted performance
774.6
Current official/published rating (highest between Raw, WR and WP)
950.4
Current highest rating achieved
954.0
Current floor (min rating allowed)
500.0
Current K-factor
40
Games played this month
0
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)
±237.0
Current Raw change used (final)
0.0
Projected new Raw rating
949.2
Projected new Weighed rating
874.3
Projected new Weighted performance
774.6
Projected new final Raw rating (if new WP > new Raw)
949.2
Projected new highest rating
954.0
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
949.2
Projected effective change (new Official - current Official)
-1.2
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 rating
715.6
Current Weighted rating
642.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
715.6
Current highest rating achieved
716.8
Current floor (min rating allowed)
500.0
Current K-factor
40
s
Games played this month
0
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)
±330.6
Current Raw change used (final)
0.0
Projected new Raw rating
715.6
Projected new Weighed rating
595.0
Projected new Weighted performance
531.4
Projected new final Raw rating (if new WP > new Raw)
715.6
Projected new highest rating
716.8
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
715.6
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 rating
500.0
Current Weighted rating
500.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
500.0
Current highest rating achieved
500.0
Current floor (min rating allowed)
500.0
Current K-factor
40
Games played this month
0
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)
±449.5
Current Raw change used (final)
0.0
Projected new Raw rating
500.0
Projected new Weighed rating
460.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
500.0
Projected new floor
500.0
Projected new K-facor
40
Projected new official/published rating (highest between new Raw, new WR and new WP)
500.0
Projected effective change (new Official - current Official)
=0.0
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
1
NWU Super 16 2024
2024/04/19
2024/04/19
Gert Sibande (MGS)
Rapid
30
0.60
6
6
0.0
983.0
716.8
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
8
NWU Super 16 2024
2024/04/19
2024/04/19
Gert Sibande (MGS)
Rapid
30
0.60
6
6
0.0
983.0
716.8
Analysis
7
D2 School League Finals 2023 (U19)
2023/07/22
2023/07/22
West Rand (GWR)
Standard
60
0.83
5
5
1.0
995.3
954.0
Analysis
6
NWU Super 16 2023 (A)
2023/04/21
2023/04/21
Gert Sibande (MGS)
Rapid
30
0.60
7
6
3.0
953.5
500.0
Analysis
5
2022 Gauteng Schools Individual Chess Championship (U15 Girls)
2022/06/18
2022/06/18
Ekurhuleni (GE)
Standard
60
0.83
5
5
2.0
697.8
740.0
Analysis
4
D2 Schools Individuals 2022 (U15 Girls)
2022/05/07
2022/05/07
West Rand (GWR)
Standard
60
0.83
5
5
3.5
582.3
600.8
Analysis
3
2019 Gauteng School League Finals (U13 Girls)
2019/08/23
2019/08/23
Tshwane (GTP)
Standard
60
0.83
5
5
1.0
502.0
502.4
Analysis
2
D2 League Finals 2019 (U13 Girls)
2019/08/03
2019/08/03
West Rand (GWR)
Standard
60
0.83
5
5
1.5
502.0
502.4
Analysis
1
D2 Schools Individuals 2018 (U11)
2018/05/19
2018/05/19
Johannesburg Metro (GJM)
Standard
60
0.83
5
5
1.0
500.0
500.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
6
0
0
6
0.0
0.0
-425.0
1219.6
794.6
White
3
0
0
3
0.0
0.0
-425.0
1215.3
790.3
Black
3
0
0
3
0.0
0.0
-425.0
1223.9
798.9
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
6
0
0
6
0.0
0.0
-425.0
1219.6
794.6
White
3
0
0
3
0.0
0.0
-425.0
1215.3
790.3
Black
3
0
0
3
0.0
0.0
-425.0
1223.9
798.9
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
42
11
4
27
13.0
31.0
-161.9
1162.4
1000.5
White
19
5
0
14
5.0
26.3
-201.3
1154.7
953.4
Black
23
6
4
13
8.0
34.8
-129.3
1168.7
1039.3
Standard
All
30
8
4
18
10.0
33.3
-141.7
1143.4
1001.7
White
13
4
0
9
4.0
30.8
-163.5
1130.3
966.9
Black
17
4
4
9
6.0
35.3
-125.0
1153.4
1028.4
Rapid
All
12
3
0
9
3.0
25.0
-212.5
1209.8
997.3
White
6
1
0
5
1.0
16.7
-283.3
1207.6
924.3
Black
6
2
0
4
2.0
33.3
-141.7
1212.0
1070.3
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 id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1070154363
Gajee, M (Mihir)
2
0.0
0
0
2
0.0
968.3
-425.0
543.3
View list
2
2070117337
Mpofu, MN (Mandy)
1
1.0
1
0
0
100.0
502.0
425.0
927.0
View list
3
1060117318
Khumalo, G (Goitsemodimo)
1
1.0
1
0
0
100.0
995.3
425.0
1420.3
View list
4
2080118221
Khoza, B (Buhlebethu)
1
1.0
1
0
0
100.0
502.0
425.0
927.0
View list
5
2080112254
Harmse, L (Lizelle)
1
1.0
1
0
0
100.0
697.8
425.0
1122.8
View list
6
1080154384
Monageng, T (Takatso)
1
1.0
1
0
0
100.0
953.5
425.0
1378.5
View list
7
207083539
Mnguni, A (Atlegang)
1
1.0
1
0
0
100.0
582.3
425.0
1007.3
View list
8
1060154386
Myburgh, V (Vincent)
1
1.0
1
0
0
100.0
953.5
425.0
1378.5
View list
9
2080191698
Nemahembeni, O (Omphile Grace)
1
1.0
1
0
0
100.0
697.8
425.0
1122.8
View list
10
2060154392
Ramothibe, J (Joy)
1
1.0
1
0
0
100.0
953.5
425.0
1378.5
View list
11
2070136213
Thikhathali, V (Vhuhwavho)
1
1.0
1
0
0
100.0
582.3
425.0
1007.3
View list
12
2080102521
Van Tonder, J (Janelize)
1
1.0
1
0
0
100.0
582.3
425.0
1007.3
View list
13
2070140276
Mbolongwe, N (Nonhlanhla)
1
0.5
0
1
0
50.0
582.3
0.0
582.3
View list
14
2080117344
Rasimate, N (Ntsako)
1
0.5
0
1
0
50.0
502.0
0.0
502.0
View list
15
2070100941
Van Wyk, C (Cloudin)
1
0.5
0
1
0
50.0
500.0
0.0
500.0
View list
16
208078735
Visser, K (Kayla)
1
0.5
0
1
0
50.0
500.0
0.0
500.0
View list
17
2080143481
Mutungwazi, G (Gladys)
1
0.0
0
0
1
0.0
697.8
-425.0
272.8
View list
18
1060140283
Montsho, T (Tumisang)
1
0.0
0
0
1
0.0
995.3
-425.0
570.3
View list
19
1080302239
Mhlongo, G (Godfrey)
1
0.0
0
0
1
0.0
983.0
-425.0
558.0
View list
20
207067880
Graaff, C (Christel)
1
0.0
0
0
1
0.0
500.0
-425.0
75.0
View list