Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zhang, W (Wenbo)

Chess SA id

1120157308

FIDE id

Date of birth

2012-04-04 (U16)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1200.8	1199.2	1200	1200
Raw rating	1169.3	1160.4	1200	1200
Weighted rating	1200.8	1199.2	1200	1200
Weighted performance	0	0	0	0
Floor	721.1	723.9	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	173.2	175.4	165.8	165.8
Highest rating	1221.1 2025-04-01	1223.9 2025-04-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1221.1 2025-04-01	1223.9 2025-04-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1221.1 2018-10-01	1223.9 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2.3	-2.8	0	0
New rating	1198.6	1196.4	1200	1200
Analysis
Rating	1200.8	1199.2	1200	1200
Raw rating	1169.3	1160.4	1200	1200
Weighted rating	1200.8	1199.2	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	721.1	723.9	700	700
Max/Min rating change allowed	173.2	175.4	165.8	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1169.3	1160.4	1200	1200
New weighted rating	1198.6	1196.4	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1198.6	1196.4	1200	1200
Temp new rating +/-	-2.3	-2.8	0	0
Final new rating +/-	-2.3	-2.8	0	0
New rating	1198.6	1196.4	1200	1200
New K-factor	36	36	36	36
New floor	721.1	723.9	700	700

Item	Main	Standard
	0	0
	18	18
	0	0
	5	5
	0	0
	0	0
History	23	23

Games since
	Main 18	Standard 18		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	18	5.5	30.56	-165.3	1348.4	1183.1
Standard	18	5.5	30.56	-165.3	1348.4	1183.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	23	7.5	32.61	-147.8	1319.8	1172
Standard	23	7.5	32.61	-147.8	1319.8	1172
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1169.3	1160.4	1200	1200
2025-11-30	1169.3	1160.4	1200	1200
2025-11-01	1218	1219.8	1200	1200
2025-09-30	1218	1219.8	1200	1200
2025-09-01	1218	1219.8	1200	1200
2025-08-01	1218	1219.8	1200	1200
2025-07-01	1218	1219.8	1200	1200
2025-06-01	1221.1	1223.9	1200	1200
2025-05-01	1221.1	1223.9	1200	1200
2025-04-01	1221.1	1223.9	1200	1200
2025-03-01	1189.4	1185.9	1200	1200
2025-02-01	1189.4	1185.9	1200	1200
2025-01-01	1189.2	1185.6	1200	1200
2024-12-01	1189.2	1185.6	1200	1200
2024-11-01	1189.2	1185.6	1200	1200
2024-10-01	1189.2	1185.6	1200	1200
2024-09-01	1189.2	1185.6	1200	1200
2024-11-01	1189.2	1185.6	1200	1200
2024-07-01	1189.2	1185.6	1200	1200
2024-06-01	1189.2	1185.6	1200	1200
2024-05-01	1189.2	1185.6	1200	1200
2024-04-01	1189.2	1185.6	1200	1200
2024-03-01	1189.2	1185.6	1200	1200
2024-02-01	1189.2	1185.6	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JCC St Davids Marist Schools League 2025 (A)	2025-09-08	2025-10-27	Standard	Johannesburg Metro (GJM)	6	6	0	Yes	Analysis
2	JCC Steyn City High Schools League 2025 (A)	2025-05-07	2025-06-09	Standard	Johannesburg Metro (GJM)	6	6	2.5	Yes	Analysis
3	JCC - Dainfern Chess League 2025 (A)	2025-02-03	2025-03-17	Standard	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
4	GoForChess Junior Chess Championship 2023 (Senior)	2023-06-10	2023-06-10	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-03-03	rnd 4	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Kotzenmacher, L (Leo)				Opponent Edwards, D (David)
2	2	Tournament GoForChess Junior Chess Championship 2023				Tournament GoForChess Junior Chess Championship 2023
		date 2023-06-10	rnd 1	type Standard	result 1	date 2023-06-10	rnd 2	type Standard	result 1
		Opponent Oyebajo, A (Adesola)				Opponent Schiel, C (Chad)
3	1	Tournament JCC Steyn City High Schools League 2025				Tournament JCC Steyn City High Schools League 2025
		date 2025-06-02	rnd 5	type Standard	result 0.5	date 2025-06-02	rnd 5	type Standard	result 0.5
		Opponent Sibanyoni, Z (Zotha)				Opponent Sibanyoni, Z (Zotha)

#	Games	Start				End
1	2	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-03-03	rnd 4	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Kotzenmacher, L (Leo)				Opponent Edwards, D (David)
2	2	Tournament GoForChess Junior Chess Championship 2023				Tournament GoForChess Junior Chess Championship 2023
		date 2023-06-10	rnd 1	type Standard	result 1	date 2023-06-10	rnd 2	type Standard	result 1
		Opponent Oyebajo, A (Adesola)				Opponent Schiel, C (Chad)
3	1	Tournament JCC Steyn City High Schools League 2025				Tournament JCC Steyn City High Schools League 2025
		date 2025-06-02	rnd 5	type Standard	result 0.5	date 2025-06-02	rnd 5	type Standard	result 0.5
		Opponent Sibanyoni, Z (Zotha)				Opponent Sibanyoni, Z (Zotha)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-03-03	rnd 4	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Kotzenmacher, L (Leo)				Opponent Edwards, D (David)
2	2	Tournament GoForChess Junior Chess Championship 2023				Tournament GoForChess Junior Chess Championship 2023
		date 2023-06-10	rnd 1	type Standard	result 1	date 2023-06-10	rnd 2	type Standard	result 1
		Opponent Oyebajo, A (Adesola)				Opponent Schiel, C (Chad)
3	1	Tournament JCC Steyn City High Schools League 2025				Tournament JCC Steyn City High Schools League 2025
		date 2025-05-19	rnd 3	type Standard	result 1	date 2025-05-19	rnd 3	type Standard	result 1
		Opponent Semathu, M (Mmusi)				Opponent Semathu, M (Mmusi)

#	Games	Start				End
1	2	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-03-03	rnd 4	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Kotzenmacher, L (Leo)				Opponent Edwards, D (David)
2	2	Tournament GoForChess Junior Chess Championship 2023				Tournament GoForChess Junior Chess Championship 2023
		date 2023-06-10	rnd 1	type Standard	result 1	date 2023-06-10	rnd 2	type Standard	result 1
		Opponent Oyebajo, A (Adesola)				Opponent Schiel, C (Chad)
3	1	Tournament JCC Steyn City High Schools League 2025				Tournament JCC Steyn City High Schools League 2025
		date 2025-05-19	rnd 3	type Standard	result 1	date 2025-05-19	rnd 3	type Standard	result 1
		Opponent Semathu, M (Mmusi)				Opponent Semathu, M (Mmusi)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Sibanyoni ,Z (Zotha)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
1	Sibanyoni ,Z (Zotha)	1	1194.6	1194.6	1	1193.1	1194.6	0	0	0	0	0	0
2	Lamola ,T (Tumisho)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Lamola ,T (Tumisho)	1	1267.5	842.5	1	1254.7	842.5	0	0	0	0	0	0
3	Deysel ,H (Hannah)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Deysel ,H (Hannah)	1	1529.3	1104.3	1	1527.8	1104.3	0	0	0	0	0	0
4	Clarke ,M (Myron)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Clarke ,M (Myron)	1	1379	954	1	1402.9	954	0	0	0	0	0	0
5	Chen ,Y (Youlin)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Chen ,Y (Youlin)	1	1433.4	1008.4	1	1430.3	1008.4	0	0	0	0	0	0
6	Caraphina ,J (Joao)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Caraphina ,J (Joao)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Dukhan ,K (Kashvir)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Dukhan ,K (Kashvir)	1	1665.6	1240.6	1	1670.1	1240.6	0	0	0	0	0	0
8	Chocko ,J (Josh)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Chocko ,J (Josh)	1	1233.3	808.3	1	1240.9	808.3	0	0	0	0	0	0
9	Stathoulis ,C (Constantinos John)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Stathoulis ,C (Constantinos John)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Muroyiwa ,T (Takudzwa)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Muroyiwa ,T (Takudzwa)	1	1321.1	896.1	1	1320.3	896.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Zhang, W (Wenbo)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms