Chess South Africa Ratings Database

PLAYER PAGE

Personal

Xu, J (Jiayi)

Chess SA id

1180303499

FIDE id

Date of birth

2018-07-28 (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

41.9

Junior GPX Points

1082.2

Item	Main	Standard	Rapid	Blitz
Rating	1240.5	1241.4	1199.4	1200
Raw rating	1240.5	1241.4	1198.2	1200
Weighted rating	1226.7	1227.9	1199.4	1200
Weighted performance	1130.2	1093.6	0	0
Floor	764	768.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	156.5	156.3	166.2	165.8
Highest rating	1302.7 2024-08-01	1298.8 2024-08-01	1200 2024-05-01	1200 2024-05-01
Highest raw rating	1264 2024-11-01	1268.2 2024-11-01	1200 2024-05-01	1200 2024-05-01
Highest weighted rating	1264 2024-10-01	1268.2 2024-10-01	1200 2024-05-01	1200 2024-05-01
Highest weighted performance	1302.7 2024-08-01	1298.8 2024-08-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-0.1	0
New rating	1240.5	1241.4	1199.3	1200
Analysis
Rating	1240.5	1241.4	1199.4	1200
Raw rating	1240.5	1241.4	1198.2	1200
Weighted rating	1226.7	1227.9	1199.4
Weighted performance	1130.2	1093.6	0
K-factor	36	36	36	36
Floor	764	768.2	700	700
Max/Min rating change allowed	156.5	156.3	166.2	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	1240.5	1241.4	1198.2	1200
New weighted rating	1228.3	1229.5	1199.3	1200
New weighted performance	1123.5	1087.1	0	0
Temp new rating	1240.5	1241.4	1199.3	1200
Temp new rating +/-	0	0	-0.1	0
Final new rating +/-	0	0	-0.1	0
New rating	1240.5	1241.4	1199.3	1200
New K-factor	36	36	36	36
New floor	764	768.2	700	700

Item	Main	Standard	Rapid
	0	0	0
	42	29	13
	29	29	0
	0	0	0
	0	0	0
	0	0	0
History	71	58	13

Games since
	Main 71	Standard 58		Rapid 13		Blitz 0
Gender	Male
Age group	U8
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	3801		470		156
Male	2888		375		124
U8	65		7		7
U8 Male	39		5		5
Standard
	RSA		Province		Region
Overall	3721		490		174
Male	2840		389		135
U8	64		8		8
U8 Male	39		5		5
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U8	-1		-1		-1
U8 Male	-1		-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	42	16.5	39.29	-91.1	1255.1	1164
Standard	29	11	37.93	-102.6	1256	1153.4
Rapid	13	5.5	42.31	-65.4	1253.1	1187.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	71	31.5	44.37	-47.9	1230.7	1182.8
Standard	58	26	44.83	-44	1225.6	1181.6
Rapid	13	5.5	42.31	-65.4	1253.1	1187.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1240.5	1241.4	1198.2	1200
2025-09-30	1253.1	1258.3	1198.2	1200
2025-09-01	1253.1	1258.3	1198.2	1200
2025-08-01	1218.3	1219.3	1198.2	1200
2025-07-01	1218.4	1218.8	1200	1200
2025-06-01	1217.5	1217.7	1200	1200
2025-05-01	1210.7	1209.1	1200	1200
2025-04-01	1217.6	1218.1	1199.9	1200
2025-03-01	1216.8	1217.4	1199.6	1200
2025-02-01	1214.9	1214.6	1200	1200
2025-01-01	1194.1	1183.6	1200	1200
2024-12-01	1264	1268.2	1200	1200
2024-11-01	1264	1268.2	1200	1200
2024-10-01	1243.3	1248.8	1200	1200
2024-09-01	1243.3	1248.8	1200	1200
2024-08-01	1211.6	1212.8	1200	1200
2024-07-01	1211.6	1212.8	1200	1200
2024-09-01	1194	1191.2	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	2	Yes	Analysis
2	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
3	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	4	Yes	Analysis
4	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	5	3	Yes	Analysis
5	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	2	Yes	Analysis
6	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	5	1	Yes	Analysis
7	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	4	0	Yes	Analysis
8	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	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	2	Yes	Analysis
2	Buffalo City Chess Junior Closed 2025 (U8 Open+Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
3	3rd Chess Vikings Open Championship 2025 (D)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	6	4	Yes	Analysis
4	BC Schools Chess Festival 2025 (U7)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	7	5	3	Yes	Analysis
5	Beacon Bay Winter Cup 2025 (C)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	2	Yes	Analysis
6	Vikings Holiday 2025 (D)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	6	5	1	Yes	Analysis
7	2025 Buffalo City Chess Trials 1 (U8)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	4	0	Yes	Analysis
8	Rapid Feb 2nd Leg 2025 (U8+U10)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
9	EL Junior Closed 2024 (U10)	2024-11-23	2024-11-23	Standard	Buffalo City (EBC)	5	4	0	Yes	Analysis
10	East London Open 2024 (C)	2024-11-05	2024-11-05	Standard	Buffalo City (EBC)	6	5	3	Yes	Analysis
11	5th BC Trails 2024 (U10B)	2024-08-17	2024-08-17	Standard	Buffalo City (EBC)	5	5	4.5	Yes	Analysis
12	5th BC Trails 2024 (U10B)	2024-08-17	2024-08-17	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
13	4th BC Trials 2024 (U10B)	2024-06-08	2024-06-08	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
14	3rd BC Trials 2024 (U10B)	2024-05-11	2024-05-11	Standard	Buffalo City (EBC)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	4	Tournament 3rd BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-05-11	rnd 3	type Standard	result 0.5	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Mpunga, N (Naluvuyo)				Opponent Bokolo, A (Awande)
3	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	4	Tournament 3rd BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-05-11	rnd 3	type Standard	result 0.5	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Mpunga, N (Naluvuyo)				Opponent Bokolo, A (Awande)
3	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)

#	Games	Start				End
1	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 4	type Rapid	result 0.5	date 2025-07-09	rnd 5	type Rapid	result 0.5
		Opponent Masondwana, N (Ndalwentle)				Opponent Nonqane, Y (Yibanathi)
2	2	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 1	type Rapid	result 1
		Opponent Weng, J (Junjie)				Opponent Kapp, A (Alexi)
3	2	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Mgudlwa, O (Okuhle)				Opponent Mabhera, A (Annelise'S Atipa)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)
3	3	Tournament East London Open 2024				Tournament East London Open 2024
		date 2024-11-05	rnd 2	type Standard	result 1	date 2024-11-05	rnd 4	type Standard	result 1
		Opponent Meyer, F (Fraser)				Opponent Sigungqa, S (Siphelele)

#	Games	Start				End
1	4	Tournament 5th BC Trails 2024				Tournament 5th BC Trails 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Mazikana, E (Elsie)				Opponent Kala, M (Mihle)
2	3	Tournament BC Schools Chess Festival 2025				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mxabo, S (Sophumelela)				Opponent Gosling, E (Eli)
3	3	Tournament East London Open 2024				Tournament East London Open 2024
		date 2024-11-05	rnd 2	type Standard	result 1	date 2024-11-05	rnd 4	type Standard	result 1
		Opponent Meyer, F (Fraser)				Opponent Sigungqa, S (Siphelele)

#	Games	Start				End
1	2	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Mgudlwa, O (Okuhle)				Opponent Mabhera, A (Annelise'S Atipa)
2	1	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 1	type Rapid	result 1
		Opponent Kapp, A (Alexi)				Opponent Kapp, A (Alexi)
3	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent SINGANZI, M (MELOKUHLE)				Opponent SINGANZI, M (MELOKUHLE)

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	Weng ,J (Junjie)	5	0.5	-340	4	0	-425	1	0.5	0	0	0	0
1	Weng ,J (Junjie)	5	1399	1059	4	1440.8	974	1	1200	1399	0	0	0
2	Makgaila ,M (Moagi)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
2	Makgaila ,M (Moagi)	4	1289.9	1077.4	4	1291.8	1077.4	0	0	0	0	0	0
3	Coetzee ,N (Niki)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Coetzee ,N (Niki)	3	1170.5	745.5	3	1160.6	745.5	0	0	0	0	0	0
4	Mazikana ,E (Elsie)	3	2	141.7	2	2	425	1	0	-425	0	0	0
4	Mazikana ,E (Elsie)	3	1205.5	1347.1	2	1206.8	1630.5	1	1200	780.5	0	0	0
5	Mgudlwa ,O (Okuhle)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
5	Mgudlwa ,O (Okuhle)	3	1199.8	1058.2	2	1199.8	774.8	1	1200	1624.8	0	0	0
6	Zhang ,N (Nathan)	3	0	-425	1	0	-425	2	0	-425	0	0	0
6	Zhang ,N (Nathan)	3	1435.1	1010.1	1	1357.1	1010.1	2	1261	1010.1	0	0	0
7	Bokolo ,A (Awande)	2	2	425	2	2	425	0	0	0	0	0	0
7	Bokolo ,A (Awande)	2	1122.7	1547.7	2	1108.6	1547.7	0	0	0	0	0	0
8	Zhang ,L (Luofan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
8	Zhang ,L (Luofan)	2	1203.2	990.7	2	1203.4	990.7	0	0	0	0	0	0
9	Naidoo ,N (Nadeema)	2	2	425	2	2	425	0	0	0	0	0	0
9	Naidoo ,N (Nadeema)	2	1199.9	1624.9	2	1199.8	1624.9	0	0	0	0	0	0
10	Zhang ,L (Luoyi)	2	1	0	2	1	0	0	0	0	0	0	0
10	Zhang ,L (Luoyi)	2	1200	1200	2	1200	1200	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Xu, J (Jiayi)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms