Chess South Africa Ratings Database

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Personal

Xu, Z (Zheyi)

Chess SA id

1150149011

FIDE id

Date of birth

2015-10-20 (U12)

Gender

Male

Region

Buffalo City (EBC)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

54.3

Junior GPX Points

1174.7

Item	Main	Standard	Rapid	Blitz
Rating	1388.1	1415.8	1317.6	1200
Raw rating	1388.1	1415.8	1317.6	1200
Weighted rating	1333.9	1334.2	1311.2	1200
Weighted performance	1346	1364.3	1192.4	0
Floor	888.1	925.3	861.9	700
K-factor	36	32	36	36
Min/Max rating change allowed	126.8	121.9	140.2	165.8
Highest rating	1388.1 2025-09-01	1425.3 2025-06-01	1504.6 2023-06-01	1200 2018-10-01
Highest raw rating	1388.1 2025-09-01	1425.3 2025-06-01	1361.9 2025-03-01	1200 2024-02-01
Highest weighted rating	1326.6 2025-09-01	1322.9 2025-09-01	1309 2025-08-01	1200 2018-10-01
Highest weighted performance	1379.7 2025-06-01	1425.3 2024-08-01	1504.6 2023-06-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1388.1	1415.8	1317.6	1200
Analysis
Rating	1388.1	1415.8	1317.6	1200
Raw rating	1388.1	1415.8	1317.6	1200
Weighted rating	1333.9	1334.2	1311.2
Weighted performance	1346	1364.3	1192.4
K-factor	36	32	36	36
Floor	888.1	925.3	861.9	700
Max/Min rating change allowed	126.8	121.9	140.2	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	1388.1	1415.8	1317.6	1200
New weighted rating	1340.7	1344.6	1312.2	1200
New weighted performance	1345.5	1363.8	1191.9	0
Temp new rating	1388.1	1415.8	1317.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1388.1	1415.8	1317.6	1200
New K-factor	36	32	36	36
New floor	888.1	925.3	861.9	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	75	43	18	14
	35	35	0	0
	33	19	14	0
	0	0	0	0
	0	0	0	0
History	143	97	32	14

Games since
	Main 117	Standard 78		Rapid 25		Blitz 14
Gender	Male
Age group	U12
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	2299		305		99
Male	1878		260		82
U12	306		39		15
U12 Male	224		29		9
Standard
	RSA		Province		Region
Overall	1894		249		85
Male	1558		213		69
U12	248		35		15
U12 Male	181		27		9
Rapid
	RSA		Province		Region
Overall	939		65		18
Male	773		54		18
U12	154		6		2
U12 Male	111		4		2
Blitz
	RSA		Province		Region
Overall	460		58		37
Male	416		54		34
U12	21		5		3
U12 Male	16		5		3


	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	75	43	57.33	62.3	1307.8	1370.1
Standard	43	23.5	54.65	39.5	1335.4	1375
Rapid	18	12	66.67	141.7	1273.3	1415
Blitz	14	7.5	53.57	30.4	1267	1297.4
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	143	83	58.04	68.4	1262.2	1330.5
Standard	97	53.5	55.15	43.8	1265	1308.8
Rapid	32	22	68.75	159.4	1251.5	1410.9
Blitz	14	7.5	53.57	30.4	1267	1297.4

Date	Main	Standard	Rapid	Blitz
2025-09-30	1388.1	1415.8	1317.6	1200
2025-09-01	1388.1	1415.8	1317.6	1200
2025-08-01	1380.7	1415.5	1317.6	1200
2025-07-01	1377.9	1415.5	1312.4	1200
2025-06-01	1379.7	1425.3	1312.4	1200
2025-05-01	1351.6	1396.6	1312.4	1199.9
2025-04-01	1326.8	1285.9	1361.9	1200
2025-03-01	1326.8	1285.9	1361.9	1199.9
2025-02-01	1300.2	1285.9	1294.4	1199.7
2025-01-01	1326.1	1318.6	1294.4	1200
2024-12-01	1326.1	1318.6	1294.4	1200
2024-11-01	1326.1	1318.6	1294.4	1200
2024-10-01	1326.4	1318.2	1294.4	1200
2024-09-01	1326.4	1318.2	1294.4	1200
2024-08-01	1278.3	1254.6	1294.4	1200
2024-07-01	1278.3	1254.6	1294.4	1200
2024-06-01	1253	1218	1294.4	1200
2024-08-01	1242.2	1200.4	1294.4	1200
2024-04-01	1241	1187.2	1294.4	1200
2024-03-01	1229.9	1160.8	1294.4	1200
2024-02-01	1229.9	1160.8	1294.4	1200
2024-01-01	1229.9	1160.8	1294.4	1200
2023-12-01	1229.9	1160.8	1294.4	1200
2023-11-01	1229.9	1160.8	1294.4	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 Junior Closed 2025 (U12 Open)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
2	BC Schools Chess Festival 2025 (U11 Open)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	5	5	3.5	Yes	Analysis
3	Beacon Bay Winter Cup 2025 (B)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	4	Yes	Analysis
4	2nd Vikings Classical 2025 (C)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
5	2025 Buffalo City Chess Trials 3 (U12)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
6	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	3	Yes	Analysis
7	Vikings Holiday 2025 (Rapid B)	2025-04-05	2025-04-05	Rapid	Buffalo City (EBC)	5	5	2	Yes	Analysis
8	Vikings Holiday 2025 (Blitz B)	2025-04-05	2025-04-05	Blitz	Buffalo City (EBC)	7	5	3	Yes	Analysis
9	Vikings Holiday 2025 (C)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	5	1	1	Yes	Analysis
10	2025 Buffalo City Chess Trials 2 (U12)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
11	2025 Buffalo City Chess Trials 1 (U12)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
12	Rapid Feb 2nd Leg 2025 (U12)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	6	Yes	Analysis
13	NMBCU vs BCC Derby Chess Invitational 2025 (U10)	2025-01-10	2025-01-11	Standard	Nelson Mandela Bay (ENM)	5	5	1	Yes	Analysis
14	NMBCU vs BCC Derby Chess Invitational 2025 (Blitz Open B)	2025-01-12	2025-01-12	Blitz	Nelson Mandela Bay (ENM)	9	9	4.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Buffalo City Chess Junior Closed 2025 (U12 Open)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
2	BC Schools Chess Festival 2025 (U11 Open)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	5	5	3.5	Yes	Analysis
3	Beacon Bay Winter Cup 2025 (B)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	6	4	Yes	Analysis
4	2nd Vikings Classical 2025 (C)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
5	2025 Buffalo City Chess Trials 3 (U12)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
6	EC Open 2025 (U8-U14 Boys)	2025-05-02	2025-05-02	Standard	Buffalo City (EBC)	7	7	3	Yes	Analysis
7	Vikings Holiday 2025 (Rapid B)	2025-04-05	2025-04-05	Rapid	Buffalo City (EBC)	5	5	2	Yes	Analysis
8	Vikings Holiday 2025 (Blitz B)	2025-04-05	2025-04-05	Blitz	Buffalo City (EBC)	7	5	3	Yes	Analysis
9	Vikings Holiday 2025 (C)	2025-04-05	2025-04-05	Standard	Buffalo City (EBC)	5	1	1	Yes	Analysis
10	2025 Buffalo City Chess Trials 2 (U12)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
11	2025 Buffalo City Chess Trials 1 (U12)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
12	Rapid Feb 2nd Leg 2025 (U12)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	7	6	Yes	Analysis
13	NMBCU vs BCC Derby Chess Invitational 2025 (U10)	2025-01-10	2025-01-11	Standard	Nelson Mandela Bay (ENM)	5	5	1	Yes	Analysis
14	NMBCU vs BCC Derby Chess Invitational 2025 (Blitz Open B)	2025-01-12	2025-01-12	Blitz	Nelson Mandela Bay (ENM)	9	9	4.5	Yes	Analysis
15	East London Open 2024 (C)	2024-11-05	2024-11-05	Standard	Buffalo City (EBC)	6	5	3	Yes	Analysis
16	5th BC Trails 2024 (U10A)	2024-08-17	2024-08-17	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
17	Hackers Open 2024 (C)	2024-08-10	2024-08-10	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
18	Hackers Open 2024 (Blitz)	2024-08-11	2024-08-11	Blitz	Buffalo City (EBC)	7	0	0	No	Analysis
19	4th BC Trials 2024 (U10A)	2024-06-08	2024-06-08	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
20	3rd BC Trials 2024 (U10A)	2024-05-11	2024-05-11	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
21	UFH Open 2024 (C)	2024-04-13	2024-04-13	Standard	Amathole (EAL)	5	5	3	Yes	Analysis
22	2nd BC Trials 2024 (U10A)	2024-03-09	2024-03-09	Standard	Buffalo City (EBC)	5	5	2.5	Yes	Analysis
23	Chess Vikings Exam Rapid 2023 (C)	2023-11-04	2023-11-04	Rapid	Buffalo City (EBC)	7	7	4	Yes	Analysis
24	BC 5th Trials 2023 (U10A)	2023-09-02	2023-09-02	Standard	Buffalo City (EBC)	5	0	0	No	Analysis
25	3rd BC Trials 2023 (U10A)	2023-08-12	2023-08-12	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
26	2nd BC Trials 2023 (U10B)	2023-06-03	2023-06-03	Rapid	Buffalo City (EBC)	7	7	6	Yes	Analysis
27	BC Chess Trials 1 of 5 2023 (U10B)	2023-04-22	2023-04-22	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
28	3rd Vikings Champs 2023 (U10C+U12C)	2023-03-25	2023-03-25	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
29	Little Vikings 2023 (U10B+U12B)	2023-02-11	2023-02-11	Standard	Buffalo City (EBC)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament Beacon Bay Winter Cup 2025				Tournament BC Schools Chess Festival 2025
		date 2025-07-09	rnd 5	type Rapid	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Masondwana, M (Mangaliso)				Opponent Khandoo, N (Nilan)
2	5	Tournament Rapid Feb 2nd Leg 2025				Tournament 2025 Buffalo City Chess Trials 1
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-03-22	rnd 1	type Standard	result 1
		Opponent Bruyns, N (Nayzia)				Opponent Malik, A (Ateeb)
3	5	Tournament 2nd BC Trials 2023				Tournament 2nd BC Trials 2023
		date 2023-06-03	rnd 3	type Rapid	result 1	date 2023-06-03	rnd 7	type Rapid	result 1
		Opponent Chabata, T (Tinaye)				Opponent Wood, S (Sebastian)

#	Games	Start				End
1	5	Tournament 2nd Vikings Classical 2025				Tournament BC Schools Chess Festival 2025
		date 2025-05-24	rnd 5	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Mantyoyi, Z (Zingce)				Opponent Khandoo, N (Nilan)
2	4	Tournament 2025 Buffalo City Chess Trials 3				Tournament 2nd Vikings Classical 2025
		date 2025-05-10	rnd 4	type Standard	result 1	date 2025-05-24	rnd 2	type Standard	result 1
		Opponent Gwana, L (Libubomi)				Opponent Zungu, A (Afika)
3	3	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 3	type Standard	result 1
		Opponent Coetzee, N (Niki)				Opponent Kuo, C (Chih-Hsun)

#	Games	Start				End
1	7	Tournament 2nd BC Trials 2023				Tournament Chess Vikings Exam Rapid 2023
		date 2023-06-03	rnd 3	type Rapid	result 1	date 2023-11-04	rnd 2	type Rapid	result 1
		Opponent Chabata, T (Tinaye)				Opponent Gonya, M (Mvuni)
2	4	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 7	type Rapid	result 1
		Opponent Bruyns, N (Nayzia)				Opponent James, K (Kyle)
3	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 5	type Rapid	result 1	date 2025-07-09	rnd 6	type Rapid	result 1
		Opponent Masondwana, M (Mangaliso)				Opponent Mkebe, Y (Yavela)

#	Games	Start				End
1	3	Tournament NMBCU vs BCC Derby Chess Invitational 2025				Tournament NMBCU vs BCC Derby Chess Invitational 2025
		date 2025-01-12	rnd 2	type Blitz	result 1	date 2025-01-12	rnd 4	type Blitz	result 1
		Opponent Slater, C (Charlie)				Opponent James, K (Kyle)
2	2	Tournament Vikings Holiday 2025				Tournament Vikings Holiday 2025
		date 2025-04-05	rnd 3	type Blitz	result 1	date 2025-04-05	rnd 4	type Blitz	result 1
		Opponent Petzer, J (Jayden)				Opponent Kipati, A (Aaron)
3	2	Tournament NMBCU vs BCC Derby Chess Invitational 2025				Tournament NMBCU vs BCC Derby Chess Invitational 2025
		date 2025-01-12	rnd 7	type Blitz	result 1	date 2025-01-12	rnd 8	type Blitz	result 1
		Opponent Kuo, C (Chih-Hsun)				Opponent Chinyamurindi, A (Anochengeta)

#	Games	Start				End
1	5	Tournament Rapid Feb 2nd Leg 2025				Tournament 2025 Buffalo City Chess Trials 1
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-03-22	rnd 1	type Standard	result 1
		Opponent Bruyns, N (Nayzia)				Opponent Malik, A (Ateeb)
2	5	Tournament 2nd BC Trials 2023				Tournament 2nd BC Trials 2023
		date 2023-06-03	rnd 3	type Rapid	result 1	date 2023-06-03	rnd 7	type Rapid	result 1
		Opponent Chabata, T (Tinaye)				Opponent Wood, S (Sebastian)
3	4	Tournament Beacon Bay Winter Cup 2025				Tournament BC Schools Chess Festival 2025
		date 2025-07-09	rnd 5	type Rapid	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Masondwana, M (Mangaliso)				Opponent Teyise, I (Iminathi)

#	Games	Start				End
1	4	Tournament 2025 Buffalo City Chess Trials 3				Tournament 2nd Vikings Classical 2025
		date 2025-05-10	rnd 4	type Standard	result 1	date 2025-05-24	rnd 2	type Standard	result 1
		Opponent Gwana, L (Libubomi)				Opponent Zungu, A (Afika)
2	3	Tournament 2nd Vikings Classical 2025				Tournament BC Schools Chess Festival 2025
		date 2025-05-24	rnd 5	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mantyoyi, Z (Zingce)				Opponent Teyise, I (Iminathi)
3	3	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 3	type Standard	result 1
		Opponent Coetzee, N (Niki)				Opponent Kuo, C (Chih-Hsun)

#	Games	Start				End
1	7	Tournament 2nd BC Trials 2023				Tournament Chess Vikings Exam Rapid 2023
		date 2023-06-03	rnd 3	type Rapid	result 1	date 2023-11-04	rnd 2	type Rapid	result 1
		Opponent Chabata, T (Tinaye)				Opponent Gonya, M (Mvuni)
2	4	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 7	type Rapid	result 1
		Opponent Bruyns, N (Nayzia)				Opponent James, K (Kyle)
3	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 5	type Rapid	result 1	date 2025-07-09	rnd 6	type Rapid	result 1
		Opponent Masondwana, M (Mangaliso)				Opponent Mkebe, Y (Yavela)

#	Games	Start				End
1	2	Tournament Vikings Holiday 2025				Tournament Vikings Holiday 2025
		date 2025-04-05	rnd 3	type Blitz	result 1	date 2025-04-05	rnd 4	type Blitz	result 1
		Opponent Petzer, J (Jayden)				Opponent Kipati, A (Aaron)
2	2	Tournament NMBCU vs BCC Derby Chess Invitational 2025				Tournament NMBCU vs BCC Derby Chess Invitational 2025
		date 2025-01-12	rnd 7	type Blitz	result 1	date 2025-01-12	rnd 8	type Blitz	result 1
		Opponent Kuo, C (Chih-Hsun)				Opponent Chinyamurindi, A (Anochengeta)
3	1	Tournament Vikings Holiday 2025				Tournament Vikings Holiday 2025
		date 2025-04-05	rnd 7	type Blitz	result 1	date 2025-04-05	rnd 7	type Blitz	result 1
		Opponent Krouse, L (Logan)				Opponent Krouse, L (Logan)

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	Lin ,Y (Yifan)	8	0	-425	6	0	-425	2	0	-425	0	0	0
1	Lin ,Y (Yifan)	8	1474.8	1049.8	6	1465.8	1049.8	2	1251.2	1049.8	0	0	0
2	Krouse ,L (Logan)	5	4	255	3	2	141.7	1	1	425	1	1	425
2	Krouse ,L (Logan)	5	1224.5	1479.5	3	1239.6	1366.2	1	1199.9	1649.5	1	1200	1649.5
3	Mxabo ,M (Masonwabe)	4	0	-425	3	0	-425	1	0	-425	0	0	0
3	Mxabo ,M (Masonwabe)	4	1369.8	944.8	3	1338.5	944.8	1	1287.2	944.8	0	0	0
4	Coetzee ,T (Tristan)	4	0	-425	3	0	-425	1	0	-425	0	0	0
4	Coetzee ,T (Tristan)	4	1439.9	1014.9	3	1395.7	1014.9	1	1317.4	1014.9	0	0	0
5	Bopi ,H (Hlelokuhle)	3	3	425	2	2	425	1	1	425	0	0	0
5	Bopi ,H (Hlelokuhle)	3	1171.8	1596.8	2	1130.4	1596.8	1	1200	1596.8	0	0	0
6	Malik ,A (Ateeb)	3	2	141.7	2	1	0	1	1	425	0	0	0
6	Malik ,A (Ateeb)	3	1176.6	1318.3	2	1169.3	1176.6	1	1216.6	1601.6	0	0	0
7	Balura ,T (Tumi)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
7	Balura ,T (Tumi)	3	1351.6	1209.9	2	1384.2	926.6	1	1237.6	1776.6	0	0	0
8	Bruyns ,N (Nayzia)	3	3	425	2	2	425	1	1	425	0	0	0
8	Bruyns ,N (Nayzia)	3	1217.1	1642.1	2	1223	1642.1	1	1200	1642.1	0	0	0
9	Kuo ,C (Chih-Hsun)	3	3	425	2	2	425	0	0	0	1	1	425
9	Kuo ,C (Chih-Hsun)	3	1244.5	1669.5	2	1271.4	1669.5	0	0	0	1	1200	1669.5
10	Masoeu ,S (Senogo)	3	0	-425	2	0	-425	0	0	0	1	0	-425
10	Masoeu ,S (Senogo)	3	1280.3	855.3	2	1214.8	855.3	0	0	0	1	1200	855.3

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Xu, Z (Zheyi)

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Last 24 raw ratings

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Top 10 opponents most often played

Norms