Chess South Africa Ratings Database

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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

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

89.8

Junior GPX Points

1298.7

Item	Main	Standard	Rapid	Blitz
Rating	1493.4	1501.4	1306	1200
Raw rating	1493.4	1501.4	1306	1200
Weighted rating	1355.3	1349.7	1247.3	1200
Weighted performance	1402.6	1428.8	0	0
Floor	1069	1068.6	812.9	700
K-factor	32	32	36	36
Min/Max rating change allowed	109.2	107.9	142.6	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	1355.3 2025-11-01	1349.7 2025-11-01	1247.3 2025-11-01	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	0	0	0	0
New rating	1493.4	1501.4	1306	1200
Analysis
Rating	1493.4	1501.4	1306	1200
Raw rating	1493.4	1501.4	1306	1200
Weighted rating	1355.3	1349.7	1247.3
Weighted performance	1402.6	1428.8	0
K-factor	32	32	36	36
Floor	1069	1068.6	812.9	700
Max/Min rating change allowed	109.2	107.9	142.6	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	1493.4	1501.4	1306	1200
New weighted rating	1371.4	1366.8	1253.5	1200
New weighted performance	1394.4	1420.4	0	0
Temp new rating	1493.4	1501.4	1306	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1493.4	1501.4	1306	1200
New K-factor	32	32	36	36
New floor	1069	1068.6	812.9	700

Item	Main	Standard	Rapid
	0	0	0
	104	78	26
	10	10	0
	0	0	0
	0	0	0
	0	0	0
History	114	88	26

Games since
	Main 114	Standard 88		Rapid 26		Blitz 0
Gender	Male
Age group	U8
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	1313		153		57
Male	1117		133		47
U8	12		2		2
U8 Male	10		2		2
Standard
	RSA		Province		Region
Overall	1197		139		56
Male	1020		121		47
U8	8		1		1
U8 Male	7		1		1
Rapid
	RSA		Province		Region
Overall	1031		85		28
Male	841		70		25
U8	9		1		1
U8 Male	5		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	104	73	70.19	171.6	1300.1	1471.7
Standard	78	56.5	72.44	190.7	1308.4	1499.1
Rapid	26	16.5	63.46	114.4	1275.3	1389.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	114	76.5	67.11	145.4	1291	1436.4
Standard	88	60	68.18	154.5	1295.6	1450.2
Rapid	26	16.5	63.46	114.4	1275.3	1389.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1493.4	1501.4	1306	1200
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
2024-09-01	1200	1200	1200	1200
2024-05-01	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

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	Chess Vikings Trials 2 2025 (D)	2025-10-18	2025-10-18	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
2	BC Open 2025 (U10-U14)	2025-10-04	2025-10-04	Rapid	Buffalo City (EBC)	7	6	3	Yes	Analysis
3	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
4	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
5	EC Closed 2025 (U8+U10 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
6	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
7	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	5	Yes	Analysis
8	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	6	5	Yes	Analysis
9	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	5	Yes	Analysis
10	2nd Vikings Classical 2025 (D)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
11	2025 Buffalo City Chess Trials 3 (U8)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
12	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	3	Yes	Analysis
13	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	6	4.5	Yes	Analysis
14	2025 Buffalo City Chess Trials 2 (U8)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
15	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
16	Vikings Classical March 2025 (U8)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
17	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
18	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	Chess Vikings Trials 2 2025 (D)	2025-10-18	2025-10-18	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
2	BC Open 2025 (U10-U14)	2025-10-04	2025-10-04	Rapid	Buffalo City (EBC)	7	6	3	Yes	Analysis
3	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
4	Buffalo City Chess Clubs League 2025 (B)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	6	2	Yes	Analysis
5	EC Closed 2025 (U8+U10 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
6	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
7	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	5	Yes	Analysis
8	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	6	5	Yes	Analysis
9	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	5	Yes	Analysis
10	2nd Vikings Classical 2025 (D)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
11	2025 Buffalo City Chess Trials 3 (U8)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
12	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	3	Yes	Analysis
13	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	6	4.5	Yes	Analysis
14	2025 Buffalo City Chess Trials 2 (U8)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	5	Yes	Analysis
15	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
16	Vikings Classical March 2025 (U8)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
17	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
18	Rapid Feb Leg 1 2025 (U8+U10)	2025-02-15	2025-02-15	Rapid	Buffalo City (EBC)	7	7	5	Yes	Analysis
19	EL Junior Closed 2024 (U10)	2024-11-23	2024-11-23	Standard	Buffalo City (EBC)	5	5	1	Yes	Analysis
20	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)	5	4.5	340	4	4	425	1	0.5	0	0	0	0
3	Xu ,J (Jiayi)	5	1224.4	1564.4	4	1228.8	1649.4	1	1200	1224.4	0	0	0
4	Mdaka ,V (Vuyanathi)	5	1	-255	2	0	-425	3	1	-141.7	0	0	0
4	Mdaka ,V (Vuyanathi)	5	1428	1173	2	1557.2	1003	3	1266.7	1286.4	0	0	0
5	Kapp ,M (Michael)	4	2	0	3	1	-141.7	1	1	425	0	0	0
5	Kapp ,M (Michael)	4	1442.2	1442.2	3	1400.9	1300.5	1	1200	1867.2	0	0	0
6	SINGANZI ,M (MELOKUHLE)	4	4	425	3	3	425	1	1	425	0	0	0
6	SINGANZI ,M (MELOKUHLE)	4	1250.8	1675.8	3	1273.5	1675.8	1	1200	1675.8	0	0	0
7	Mazikana ,E (Elsie)	4	0.5	-318.8	2	0.5	-212.5	2	0	-425	0	0	0
7	Mazikana ,E (Elsie)	4	1221.9	903.2	2	1230.4	1009.4	2	1200	796.9	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

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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