Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zhang, W (Wenbo)

Chess SA id

1120157308

FIDE id

Date of birth

2012-04-04 (U14)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1272.7

Item	Main	Standard	Rapid	Blitz
Rating	1218	1219.8	1200	1200
Raw rating	1218	1219.8	1200	1200
Weighted rating	1203.9	1203.2	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	161.6	161.2	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	0	0	0	0
New rating	1218	1219.8	1200	1200
Analysis
Rating	1218	1219.8	1200	1200
Raw rating	1218	1219.8	1200	1200
Weighted rating	1203.9	1203.2	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	721.1	723.9	700	700
Max/Min rating change allowed	161.6	161.2	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	1218	1219.8	1200	1200
New weighted rating	1205.5	1205.1	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1218	1219.8	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1218	1219.8	1200	1200
New K-factor	36	36	36	36
New floor	721.1	723.9	700	700

Item	Main	Standard
	0	0
	12	12
	0	0
	5	5
	0	0
	0	0
History	17	17

Games since
	Main 12	Standard 12		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	12	5.5	45.83	-35.4	1303.7	1268.2
Standard	12	5.5	45.83	-35.4	1303.7	1268.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	17	7.5	44.12	-50	1278.1	1228.1
Standard	17	7.5	44.12	-50	1278.1	1228.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
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
2024-08-01	1189.2	1185.6	1200	1200
2024-07-01	1189.2	1185.6	1200	1200
2024-06-01	1189.2	1185.6	1200	1200
2024-08-01	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
2024-01-01	1189.2	1185.6	1200	1200
2023-12-01	1189.2	1185.6	1200	1200
2023-11-01	1189.2	1185.6	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JCC Steyn City High Schools League 2025 (A)	2025-05-07	2025-06-09	Standard	Johannesburg Metro (GJM)	6	6	2.5	Yes	Analysis
2	JCC - Dainfern Chess League 2025 (A)	2025-02-03	2025-03-17	Standard	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	JCC Steyn City High Schools League 2025 (A)	2025-05-07	2025-06-09	Standard	Johannesburg Metro (GJM)	6	6	2.5	Yes	Analysis
2	JCC - Dainfern Chess League 2025 (A)	2025-02-03	2025-03-17	Standard	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
3	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	Oyebajo ,A (Adesola)	1	1	425	1	1	425	0	0	0	0	0	0
1	Oyebajo ,A (Adesola)	1	1050.6	1475.6	1	1022	1475.6	0	0	0	0	0	0
2	Maharaj ,I (Ishaan)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Maharaj ,I (Ishaan)	1	1225.5	800.5	1	1222.5	800.5	0	0	0	0	0	0
3	Clarke ,M (Myron)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Clarke ,M (Myron)	1	1379	954	1	1402.9	954	0	0	0	0	0	0
4	Kotzenmacher ,L (Leo)	1	1	425	1	1	425	0	0	0	0	0	0
4	Kotzenmacher ,L (Leo)	1	1309.4	1734.4	1	1309.2	1734.4	0	0	0	0	0	0
5	Edwards ,D (David)	1	1	425	1	1	425	0	0	0	0	0	0
5	Edwards ,D (David)	1	1182.4	1607.4	1	1179.2	1607.4	0	0	0	0	0	0
6	Phiri ,U (Uriel)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Phiri ,U (Uriel)	1	1422.7	997.7	1	1417.7	997.7	0	0	0	0	0	0
7	Radia ,D (Diya)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Radia ,D (Diya)	1	1527.9	1102.9	1	1511.6	1102.9	0	0	0	0	0	0
8	Sibanyoni ,Z (Zotha)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Sibanyoni ,Z (Zotha)	1	1194.6	1194.6	1	1193.1	1194.6	0	0	0	0	0	0
9	Schiel ,C (Chad)	1	1	425	1	1	425	0	0	0	0	0	0
9	Schiel ,C (Chad)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Forshaw ,C (Chloe)	1	1	425	1	1	425	0	0	0	0	0	0
10	Forshaw ,C (Chloe)	1	1167	1592	1	1160.4	1592	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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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