Chess South Africa
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Chess South Africa
Zhang, Y (Yufeng)
Dob:
2016/12/27 (U10)
Gender:
Male
Chess SA id:
1160190423
FIDE id:
Region:
Tshwane (GTP)
Citizen:
RSA
Title(s):
Last active:
2024/09/21 (6 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
1278.7
Current Weighted rating
1242.3
Current Weighted performance
1197.3
Current official/published rating (highest between Raw, WR and WP)
1278.7
Current highest rating achieved
1358.7
Current floor (min rating allowed)
858.7
Current K-factor
36
Games played this month
16
Score (S)
6.5
Expected score (We)
7.63
Difference (S-We)
-1.06
Current Raw change (no limits, including tournament time weight)
-38.1
Current min/max change allowed (with limits)
±148.2
Current Raw change used (final)
-38.1
Projected new Raw rating
1240.6
Projected new Weighed rating
1144.4
Projected new Weighted performance
1198.9
Projected new final Raw rating (if new WP > new Raw)
1240.6
Projected new highest rating
1358.7
Projected new floor
858.7
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1240.6
Projected effective change (new Official - current Official)
-38.1
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 rating
1262.5
Current Weighted rating
1237.9
Current Weighted performance
1197.3
Current official/published rating (highest between Raw, WR and WP)
1262.5
Current highest rating achieved
1355.0
Current floor (min rating allowed)
855.0
Current K-factor
36
Games played this month
16
Score (S)
6.5
Expected score (We)
7.35
Difference (S-We)
-0.85
Current Raw change (no limits, including tournament time weight)
-30.6
Current min/max change allowed (with limits)
±151.7
Current Raw change used (final)
-30.6
Projected new Raw rating
1231.9
Projected new Weighed rating
1140.3
Projected new Weighted performance
1198.9
Projected new final Raw rating (if new WP > new Raw)
1231.9
Projected new highest rating
1355.0
Projected new floor
855.0
Projected new K-facor
36
Projected new official/published rating (highest between new Raw, new WR and new WP)
1231.9
Projected effective change (new Official - current Official)
-30.6
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
1200.0
Current Weighted rating
1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current highest rating achieved
1200.0
Current floor (min rating allowed)
700.0
Current K-factor
36
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)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
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 rating
1200.0
Current Weighted rating
1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current highest rating achieved
1200.0
Current floor (min rating allowed)
700.0
Current K-factor
36
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)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating
1200.0
Projected new floor
700.0
Projected new K-facor
36
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
History
Tournament:
Centurion Chess Open Tournament 2024 (U10)
Start:
2024/09/21
End:
2024/09/21
Host:
GTP
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
3.0
Main rating:
1278.7
Rating gain/loss:
20.0
Type rating:
1262.5
Rating gain/loss:
28.4
Analysis
Tournament:
2024 Curro Hazeldean High Open Chess Tournament (U10)
Start:
2024/09/07
End:
2024/09/07
Host:
GTP
Type:
Standard
Time:
60
Time weight:
0.83
Rounds:
5
Games:
5
Score:
2.0
Main rating:
1278.7
Rating gain/loss:
-20.9
Type rating:
1262.5
Rating gain/loss:
-23.0
Analysis
Tournament:
2024 Etienne Lewis (U10)
Start:
2024/08/30
End:
2024/09/01
Host:
GTP
Type:
Standard
Time:
90
Time weight:
0.94
Rounds:
6
Games:
6
Score:
1.5
Main rating:
1278.7
Rating gain/loss:
-37.2
Type rating:
1262.5
Rating gain/loss:
-36.0
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
16
Centurion Chess Open Tournament 2024 (U10)
2024/09/21
2024/09/21
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1278.7
1262.5
Analysis
15
2024 Curro Hazeldean High Open Chess Tournament (U10)
2024/09/07
2024/09/07
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1278.7
1262.5
Analysis
14
2024 Etienne Lewis (U10)
2024/08/30
2024/09/01
Tshwane (GTP)
Standard
90
0.94
7
6
1.5
1278.7
1262.5
Analysis
13
2024 Jacaranda Round Robin Open Chess Tournament (F)
2024/08/17
2024/08/17
Tshwane (GTP)
Standard
60
0.83
5
5
0.0
1343.4
1337.0
Analysis
12
2024 Alekhine Open Chess Tournament (U10)
2024/08/09
2024/08/09
Tshwane (GTP)
Standard
90
0.94
5
5
3.0
1343.4
1337.0
Analysis
11
D4 Tshwane South District Schools Teams Chess Tournament 2024 (U9A)
2024/08/03
2024/08/03
Tshwane (GTP)
Standard
60
0.83
5
5
4.0
1343.4
1337.0
Analysis
10
Menlopark Open Chess Tournament 2024 (U10)
2024/07/13
2024/07/13
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1334.7
1323.7
Analysis
9
2024 Elise Steenkamp Open Chess Tournament (Bishops)
2024/06/15
2024/06/15
Tshwane (GTP)
Standard
90
0.94
5
5
3.5
1358.7
1355.0
Analysis
8
2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D)
2024/06/01
2024/06/01
Tshwane (GTP)
Standard
60
0.83
5
5
2.5
1358.7
1355.0
Analysis
7
2024 Mid Gauteng Open Chess Tournament (U10)
2024/05/02
2024/05/02
Tshwane (GTP)
Standard
60
0.83
5
5
4.0
1316.5
1309.8
Analysis
6
2024 Silver Lakes Open Chess Tournament (E)
2024/04/20
2024/04/20
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1214.0
1215.8
Analysis
5
2024 KSNG CHess Academy Open Tournament (E)
2024/04/06
2024/04/06
Tshwane (GTP)
Standard
60
0.83
5
5
4.0
1214.0
1215.8
Analysis
4
2024 Chris Greyling Open Chess Tournament (E)
2024/03/16
2024/03/16
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1184.1
1179.8
Analysis
3
2024 Wynie Robbertse Chess Tournament (E)
2024/03/02
2024/03/02
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1184.1
1179.8
Analysis
2
2024 Blou Bul Open Chess Tournament (E)
2024/02/10
2024/02/10
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1185.1
1181.6
Analysis
1
2024 Piet Robbertse Open Chess Tournament (E)
2024/02/03
2024/02/03
Tshwane (GTP)
Standard
90
0.94
5
5
2.5
1185.1
1181.6
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
17
Centurion Chess Open Tournament 2024 (U10)
2024/09/21
2024/09/21
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1278.7
1262.5
Analysis
16
2024 Curro Hazeldean High Open Chess Tournament (U10)
2024/09/07
2024/09/07
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1278.7
1262.5
Analysis
15
2024 Etienne Lewis (U10)
2024/08/30
2024/09/01
Tshwane (GTP)
Standard
90
0.94
7
6
1.5
1278.7
1262.5
Analysis
14
2024 Jacaranda Round Robin Open Chess Tournament (F)
2024/08/17
2024/08/17
Tshwane (GTP)
Standard
60
0.83
5
5
0.0
1343.4
1337.0
Analysis
13
2024 Alekhine Open Chess Tournament (U10)
2024/08/09
2024/08/09
Tshwane (GTP)
Standard
90
0.94
5
5
3.0
1343.4
1337.0
Analysis
12
D4 Tshwane South District Schools Teams Chess Tournament 2024 (U9A)
2024/08/03
2024/08/03
Tshwane (GTP)
Standard
60
0.83
5
5
4.0
1343.4
1337.0
Analysis
11
Menlopark Open Chess Tournament 2024 (U10)
2024/07/13
2024/07/13
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1334.7
1323.7
Analysis
10
2024 Elise Steenkamp Open Chess Tournament (Bishops)
2024/06/15
2024/06/15
Tshwane (GTP)
Standard
90
0.94
5
5
3.5
1358.7
1355.0
Analysis
9
2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D)
2024/06/01
2024/06/01
Tshwane (GTP)
Standard
60
0.83
5
5
2.5
1358.7
1355.0
Analysis
8
2024 Mid Gauteng Open Chess Tournament (U10)
2024/05/02
2024/05/02
Tshwane (GTP)
Standard
60
0.83
5
5
4.0
1316.5
1309.8
Analysis
7
2024 Silver Lakes Open Chess Tournament (E)
2024/04/20
2024/04/20
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1214.0
1215.8
Analysis
6
2024 KSNG CHess Academy Open Tournament (E)
2024/04/06
2024/04/06
Tshwane (GTP)
Standard
60
0.83
5
5
4.0
1214.0
1215.8
Analysis
5
2024 Chris Greyling Open Chess Tournament (E)
2024/03/16
2024/03/16
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1184.1
1179.8
Analysis
4
2024 Wynie Robbertse Chess Tournament (E)
2024/03/02
2024/03/02
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1184.1
1179.8
Analysis
3
2024 Blou Bul Open Chess Tournament (E)
2024/02/10
2024/02/10
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1185.1
1181.6
Analysis
2
2024 Piet Robbertse Open Chess Tournament (E)
2024/02/03
2024/02/03
Tshwane (GTP)
Standard
90
0.94
5
5
2.5
1185.1
1181.6
Analysis
1
Lardies Open Tournament 2023 (F)
2023/10/28
2023/10/28
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
81
43
4
34
45.0
55.6
47.2
1229.0
1276.2
White
41
26
3
12
27.5
67.1
145.1
1215.8
1361.0
Black
40
17
1
22
17.5
43.8
-53.1
1242.5
1189.4
Standard
All
81
43
4
34
45.0
55.6
47.2
1229.0
1276.2
White
41
26
3
12
27.5
67.1
145.1
1215.8
1361.0
Black
40
17
1
22
17.5
43.8
-53.1
1242.5
1189.4
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
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
86
45
4
37
47.0
54.7
39.5
1227.7
1267.2
White
44
27
3
14
28.5
64.8
125.6
1216.1
1341.7
Black
42
18
1
23
18.5
44.0
-50.6
1239.7
1189.1
Standard
All
86
45
4
37
47.0
54.7
39.5
1227.7
1267.2
White
44
27
3
14
28.5
64.8
125.6
1216.1
1341.7
Black
42
18
1
23
18.5
44.0
-50.6
1239.7
1189.1
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 id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1150149177
Kleynhans, M (Magnus)
3
1.0
1
0
2
33.3
1318.9
-141.7
1177.3
View list
2
2170191352
Kgwale, K (Keratilwe)
2
2.0
2
0
0
100.0
1214.0
425.0
1639.0
View list
3
2150157433
Westermann, I (Inge)
2
2.0
2
0
0
100.0
1297.6
425.0
1722.6
View list
4
2160162781
Westermann, Z (Zelri)
2
2.0
2
0
0
100.0
1231.9
425.0
1656.9
View list
5
1160300019
Zhu, H (Hengyu)
2
2.0
2
0
0
100.0
1246.3
425.0
1671.3
View list
6
1150136650
Coetzee, R (Riko)
2
1.5
1
1
0
75.0
1184.6
212.5
1397.1
View list
7
2150162780
Marais, L (Leja)
2
1.0
1
0
1
50.0
1246.3
0.0
1246.3
View list
8
2160159597
Rampersadh, M (Micah)
2
1.0
1
0
1
50.0
1318.7
0.0
1318.7
View list
9
2150151386
Rizvi, Z (Zara)
2
1.0
1
0
1
50.0
1297.6
0.0
1297.6
View list
10
1170162033
Sahoo, S (Shaurya)
2
1.0
1
0
1
50.0
1279.3
0.0
1279.3
View list
11
1150300425
Van Der Merwe, A (Abraham)
2
1.0
1
0
1
50.0
1184.1
0.0
1184.1
View list
12
1150190422
Li, J (Jiming)
2
0.0
0
0
2
0.0
1185.1
-425.0
760.1
View list
13
1160147672
Rocher, G (Gideon)
2
0.0
0
0
2
0.0
1192.0
-425.0
767.0
View list
14
1160148677
Roos, B (Benjamin)
2
0.0
0
0
2
0.0
1246.3
-425.0
821.3
View list
15
1150159694
Smit, J (Juanru)
2
0.0
0
0
2
0.0
1231.9
-425.0
806.9
View list
16
1160161737
Swanepoel, M (Marnu)
2
0.0
0
0
2
0.0
1184.6
-425.0
759.6
View list
17
1160152741
Botha, M (Marloux)
1
1.0
1
0
0
100.0
1214.0
425.0
1639.0
View list
18
1150302694
Coetzee, J (Juan)
1
1.0
1
0
0
100.0
1334.7
425.0
1759.7
View list
19
1150147657
Danzfuss, E (Edrich)
1
1.0
1
0
0
100.0
1184.1
425.0
1609.1
View list
20
1170149169
Barkhuizen, R (Reuben)
1
1.0
1
0
0
100.0
1358.7
425.0
1783.7
View list