Chess South Africa Ratings Database

PLAYER PAGE

Personal

Weng, J (Junjie)

Chess SA id

1180313026

FIDE id

Date of birth

2018-01-11 (U8)

Gender

Male

Region

Buffalo City (EBC)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

82.3

Junior GPX Points

1297.9

Item	Main	Standard	Rapid	Blitz
Rating	1491.7	1492.3	1312.9	1200
Raw rating	1486.9	1481	1312.9	1200
Weighted rating	1338.2	1331.6	1240.7	1200
Weighted performance	1392.3	1391	0	0
Floor	1069	1068.6	812.9	700
K-factor	32	32	36	36
Min/Max rating change allowed	110.2	111.1	141.2	165.8
Highest rating	1589.8 2025-09-01	1590.4 2025-09-01	1312.9 2025-08-01	1200 2024-10-01
Highest raw rating	1569 2025-09-01	1568.6 2025-09-01	1312.9 2025-08-01	1200 2024-10-01
Highest weighted rating	1338.2 2025-09-30	1331.6 2025-09-30	1225.3 2025-08-01	1200 2024-10-01
Highest weighted performance	1589.8 2025-09-01	1590.4 2025-09-01	1200 2024-10-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-4.9	-11.4	0	0
New rating	1486.9	1481	1312.9	1200
Analysis
Rating	1491.7	1492.3	1312.9	1200
Raw rating	1486.9	1481	1312.9	1200
Weighted rating	1338.2	1331.6	1240.7
Weighted performance	1392.3	1391	0
K-factor	32	32	36	36
Floor	1069	1068.6	812.9	700
Max/Min rating change allowed	110.2	111.1	141.2	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	1486.9	1481	1312.9	1200
New weighted rating	1354.7	1348.1	1247.8	1200
New weighted performance	1391.8	1390.5	0	0
Temp new rating	1486.9	1481	1312.9	1200
Temp new rating +/-	-4.9	-11.4	0	0
Final new rating +/-	-4.9	-11.4	0	0
New rating	1486.9	1481	1312.9	1200
New K-factor	32	32	36	36
New floor	1069	1068.6	812.9	700

Item	Main	Standard	Rapid
	0	0	0
	93	73	20
	10	10	0
	0	0	0
	0	0	0
	0	0	0
History	103	83	20

Games since
	Main 103	Standard 83		Rapid 20		Blitz 0
Gender	Male
Age group	U8
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	1325		168		63
Male	1137		146		52
U8	12		2		2
U8 Male	9		2		2
Standard
	RSA		Province		Region
Overall	1238		158		60
Male	1055		138		49
U8	12		2		2
U8 Male	9		2		2
Rapid
	RSA		Province		Region
Overall	964		68		20
Male	793		56		19
U8	7		1		1
U8 Male	4		1		1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U8	-1		-1		-1
U8 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	93	66	70.97	178.2	1290.6	1468.8
Standard	73	52.5	71.92	186.3	1305.3	1491.6
Rapid	20	13.5	67.5	148.8	1237.1	1385.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	103	69.5	67.48	148.5	1281.4	1430
Standard	83	56	67.47	148.5	1292.1	1440.6
Rapid	20	13.5	67.5	148.8	1237.1	1385.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1486.9	1481	1312.9	1200
2025-09-01	1569	1568.6	1312.9	1200
2025-08-01	1525.3	1507.3	1312.9	1200
2025-07-01	1514	1507.3	1246.5	1200
2025-06-01	1518	1511.3	1246.5	1200
2025-05-01	1498.3	1476.4	1246.5	1200
2025-04-01	1261.1	1256.1	1246.5	1200
2025-03-01	1212.3	1192.7	1246.5	1200
2025-02-01	1191.5	1189.2	1200	1200
2025-01-01	1150.2	1137.6	1200	1200
2024-12-01	1195.4	1192.8	1200	1200
2024-11-01	1195.4	1192.8	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	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	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
2	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
3	EC Closed 2025 (U8+U10 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
5	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	5	Yes	Analysis
6	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	6	5	Yes	Analysis
7	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	5	Yes	Analysis
8	2nd Vikings Classical 2025 (D)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
9	2025 Buffalo City Chess Trials 3 (U8)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
10	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	3	Yes	Analysis
11	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	6	4.5	Yes	Analysis
12	2025 Buffalo City Chess Trials 2 (U8)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
13	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
14	Vikings Classical March 2025 (U8)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
15	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
16	Rapid Feb Leg 1 2025 (U8+U10)	2025-02-15	2025-02-15	Rapid	Buffalo City (EBC)	7	7	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
2	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
3	EC Closed 2025 (U8+U10 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
5	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	5	Yes	Analysis
6	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	6	5	Yes	Analysis
7	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	5	Yes	Analysis
8	2nd Vikings Classical 2025 (D)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
9	2025 Buffalo City Chess Trials 3 (U8)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
10	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	3	Yes	Analysis
11	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	6	4.5	Yes	Analysis
12	2025 Buffalo City Chess Trials 2 (U8)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
13	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
14	Vikings Classical March 2025 (U8)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
15	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
16	Rapid Feb Leg 1 2025 (U8+U10)	2025-02-15	2025-02-15	Rapid	Buffalo City (EBC)	7	7	5	Yes	Analysis
17	EL Junior Closed 2024 (U10)	2024-11-23	2024-11-23	Standard	Buffalo City (EBC)	5	5	1	Yes	Analysis
18	East London Open 2024 (C)	2024-11-05	2024-11-05	Standard	Buffalo City (EBC)	6	5	2.5	Yes	Analysis

#	Games	Start				End
1	8	Tournament 3rd Chess Vikings Open Championship 2025				Tournament EC Closed 2025
		date 2025-08-02	rnd 6	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Magenu, P (Phumelela)				Opponent Vermaak, R (Riaan Junior)
2	8	Tournament 2025 Buffalo City Chess Trials 3				Tournament 2nd Vikings Classical 2025
		date 2025-05-10	rnd 1	type Standard	result 1	date 2025-05-24	rnd 3	type Standard	result 1
		Opponent Chidziwa, P (Princess)				Opponent Lane, E (Elijah)
3	7	Tournament Vikings Classical March 2025				Tournament 2025 Buffalo City Chess Trials 1
		date 2025-03-15	rnd 2	type Standard	result 1	date 2025-03-22	rnd 3	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Mxabo, S (Sophumelela)

#	Games	Start				End
1	8	Tournament 3rd Chess Vikings Open Championship 2025				Tournament EC Closed 2025
		date 2025-08-02	rnd 6	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Magenu, P (Phumelela)				Opponent Vermaak, R (Riaan Junior)
2	8	Tournament 2025 Buffalo City Chess Trials 3				Tournament 2nd Vikings Classical 2025
		date 2025-05-10	rnd 1	type Standard	result 1	date 2025-05-24	rnd 3	type Standard	result 1
		Opponent Chidziwa, P (Princess)				Opponent Lane, E (Elijah)
3	7	Tournament Vikings Classical March 2025				Tournament 2025 Buffalo City Chess Trials 1
		date 2025-03-15	rnd 2	type Standard	result 1	date 2025-03-22	rnd 3	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Mxabo, S (Sophumelela)

#	Games	Start				End
1	5	Tournament Rapid Feb 2nd Leg 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-02-22	rnd 7	type Rapid	result 0.5	date 2025-07-09	rnd 4	type Rapid	result 1
		Opponent Xu, J (Jiayi)				Opponent Kapp, M (Michael)
2	3	Tournament Rapid Feb Leg 1 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-15	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Jikijela, A (Ayana)				Opponent SINGANZI, M (MELOKUHLE)
3	3	Tournament Rapid Feb Leg 1 2025				Tournament Rapid Feb Leg 1 2025
		date 2025-02-15	rnd 1	type Rapid	result 1	date 2025-02-15	rnd 3	type Rapid	result 1
		Opponent Matikinca, L (Luhle)				Opponent Gula, I (Ikhona)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament 3rd Chess Vikings Open Championship 2025				Tournament EC Closed 2025
		date 2025-08-02	rnd 6	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Magenu, P (Phumelela)				Opponent Vermaak, R (Riaan Junior)
2	8	Tournament 2025 Buffalo City Chess Trials 3				Tournament 2nd Vikings Classical 2025
		date 2025-05-10	rnd 1	type Standard	result 1	date 2025-05-24	rnd 3	type Standard	result 1
		Opponent Chidziwa, P (Princess)				Opponent Lane, E (Elijah)
3	7	Tournament Vikings Classical March 2025				Tournament 2025 Buffalo City Chess Trials 1
		date 2025-03-15	rnd 2	type Standard	result 1	date 2025-03-22	rnd 3	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Mxabo, S (Sophumelela)

#	Games	Start				End
1	8	Tournament 3rd Chess Vikings Open Championship 2025				Tournament EC Closed 2025
		date 2025-08-02	rnd 6	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Magenu, P (Phumelela)				Opponent Vermaak, R (Riaan Junior)
2	8	Tournament 2025 Buffalo City Chess Trials 3				Tournament 2nd Vikings Classical 2025
		date 2025-05-10	rnd 1	type Standard	result 1	date 2025-05-24	rnd 3	type Standard	result 1
		Opponent Chidziwa, P (Princess)				Opponent Lane, E (Elijah)
3	7	Tournament Vikings Classical March 2025				Tournament 2025 Buffalo City Chess Trials 1
		date 2025-03-15	rnd 2	type Standard	result 1	date 2025-03-22	rnd 3	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Mxabo, S (Sophumelela)

#	Games	Start				End
1	4	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 1	type Rapid	result 1	date 2025-07-09	rnd 4	type Rapid	result 1
		Opponent Nonqane, Y (Yibanathi)				Opponent Kapp, M (Michael)
2	3	Tournament Rapid Feb Leg 1 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-15	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Jikijela, A (Ayana)				Opponent SINGANZI, M (MELOKUHLE)
3	3	Tournament Rapid Feb Leg 1 2025				Tournament Rapid Feb Leg 1 2025
		date 2025-02-15	rnd 1	type Rapid	result 1	date 2025-02-15	rnd 3	type Rapid	result 1
		Opponent Matikinca, L (Luhle)				Opponent Gula, I (Ikhona)

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	Makgaila ,M (Moagi)	8	6	212.5	7	6	303.6	1	0	-425	0	0	0
1	Makgaila ,M (Moagi)	8	1322.1	1534.6	7	1335.8	1625.7	1	1200	897.1	0	0	0
2	Coetzee ,N (Niki)	5	5	425	5	5	425	0	0	0	0	0	0
2	Coetzee ,N (Niki)	5	1172.6	1597.6	5	1162.8	1597.6	0	0	0	0	0	0
3	Xu ,J (Jiayi)	4	3.5	318.8	3	3	425	1	0.5	0	0	0	0
3	Xu ,J (Jiayi)	4	1217.3	1536	3	1218.9	1642.3	1	1200	1217.3	0	0	0
4	Kapp ,M (Michael)	4	2	0	3	1	-141.7	1	1	425	0	0	0
4	Kapp ,M (Michael)	4	1442.2	1442.2	3	1400.9	1300.5	1	1200	1867.2	0	0	0
5	SINGANZI ,M (MELOKUHLE)	4	4	425	3	3	425	1	1	425	0	0	0
5	SINGANZI ,M (MELOKUHLE)	4	1250.8	1675.8	3	1273.5	1675.8	1	1200	1675.8	0	0	0
6	Mazikana ,E (Elsie)	4	0.5	-318.8	2	0.5	-212.5	2	0	-425	0	0	0
6	Mazikana ,E (Elsie)	4	1221.9	903.2	2	1230.4	1009.4	2	1200	796.9	0	0	0
7	Mdaka ,V (Vuyanathi)	4	1	-212.5	1	0	-425	3	1	-141.7	0	0	0
7	Mdaka ,V (Vuyanathi)	4	1379.1	1166.6	1	1500.5	954.1	3	1266.7	1237.4	0	0	0
8	Mxabo ,S (Sophumelela)	3	3	425	3	3	425	0	0	0	0	0	0
8	Mxabo ,S (Sophumelela)	3	1235.3	1660.3	3	1240.3	1660.3	0	0	0	0	0	0
9	Khonza ,M (Melothando Lisokuhle)	3	3	425	3	3	425	0	0	0	0	0	0
9	Khonza ,M (Melothando Lisokuhle)	3	1194.4	1619.4	3	1193.3	1619.4	0	0	0	0	0	0
10	Zhang ,N (Nathan)	3	0.5	-283.3	2	0.5	-212.5	1	0	-425	0	0	0
10	Zhang ,N (Nathan)	3	1420	1136.7	2	1405.1	1207.5	1	1175.1	995	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Weng, J (Junjie)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms