Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zhou, A (Author)

Chess SA id

1900133959

FIDE id

Date of birth

1990-11-23 (Adult)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-28

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1204.1	1148	1295.4	1262.7
Raw rating	1204.1	1148	1293.7	1262.3
Weighted rating	1195.3	1145.9	1295.4	1262.7
Weighted performance	0	0	0	0
Floor	712.6	700	800	800
K-factor	36	36	36	36
Min/Max rating change allowed	164.9	178.6	145.1	151.7
Highest rating	1212.6 2024-02-01	1200 2018-10-01	1300 2024-02-01	1300 2024-02-01
Highest raw rating	1212.6 2024-02-01	1200 2020-01-01	1300 2024-02-01	1300 2024-02-01
Highest weighted rating	1212.6 2018-10-01	1200 2018-10-01	1293.7 2025-08-01	1262.3 2025-08-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0.3	-0.1
New rating	1204.1	1148	1295.7	1262.5
Analysis
Rating	1204.1	1148	1295.4	1262.7
Raw rating	1204.1	1148	1293.7	1262.3
Weighted rating	1195.3	1145.9	1295.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	712.6	700	800	800
Max/Min rating change allowed	164.9	178.6	145.1	151.7
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	1204.1	1148	1293.7	1262.3
New weighted rating	1196.1	1145.9	1295.7	1262.5
New weighted performance	0	0	0	0
Temp new rating	1204.1	1148	1295.7	1262.5
Temp new rating +/-	0	0	0.3	-0.1
Final new rating +/-	0	0	0.3	-0.1
New rating	1204.1	1148	1295.7	1262.5
New K-factor	36	36	36	36
New floor	712.6	700	800	800

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	5	0	5	0
	14	7	0	7
	0	0	0	0
	0	0	0	0
	5	5	0	0
History	24	12	5	7

Games since
	Main 19	Standard 7		Rapid 5		Blitz 7
Gender	Male
Age group	Adult
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	5	2	40	-85	1424.1	1339.1
Standard	0	0	0	0	0	0
Rapid	5	2	40	-85	1424.1	1339.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	24	8	33.33	-141.7	1300.2	1158.6
Standard	12	3.5	29.17	-177.1	1258.3	1081.2
Rapid	5	2	40	-85	1424.1	1339.1
Blitz	7	2.5	35.71	-121.4	1283.7	1162.3

Date	Main	Standard	Rapid	Blitz
2025-09-30	1204.1	1148	1293.7	1262.3
2025-09-01	1204.1	1148	1293.7	1262.3
2025-08-01	1204.1	1148	1293.7	1262.3
2025-07-01	1204.1	1148	1292.4	1261.8
2025-06-01	1204.1	1148	1291.3	1261.1
2025-05-01	1204.1	1148	1291.3	1260.3
2025-04-01	1204.1	1148	1291.3	1259.4
2025-03-01	1187	1148	1300	1258.3
2025-02-01	1186.4	1147.7	1300	1256.6
2025-01-01	1180.1	1136	1300	1248.9
2024-12-01	1180.1	1136	1300	1248.9
2024-11-01	1180.1	1136	1300	1248.9
2024-10-01	1180.1	1136	1300	1248.9
2024-09-01	1180.1	1136	1300	1248.9
2024-08-01	1180.1	1136	1300	1248.9
2024-07-01	1181.8	1136	1300	1300
2024-06-01	1181.8	1136	1300	1300
2024-08-01	1212.6	1165.2	1300	1300
2024-04-01	1212.6	1165.2	1300	1300
2024-03-01	1212.6	1165.2	1300	1300
2024-02-01	1212.6	1165.2	1300	1300
2024-01-01	1212.6	1165.2	1300	1300
2023-12-01	1175.1	1165.2	1200	1200
2023-11-01	1175.1	1165.2	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	Lawley Chess tournament 2nd 2025	2025-03-28	2025-03-28	Rapid	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Lawley Chess tournament 2nd 2025	2025-03-28	2025-03-28	Rapid	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
2	Lawley Blitz Tournament 2024	2024-07-21	2024-07-21	Blitz	Johannesburg Metro (GJM)	7	7	2.5	Yes	Analysis
3	Lawley Chess Tournament 2024	2024-03-30	2024-03-30	Standard	Johannesburg Metro (GJM)	7	7	2.5	Yes	Analysis
4	Ekurhuleni Chess Chessa Open 2021 (B)	2021-03-27	2021-03-27	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament Lawley Chess tournament 2nd 2025				Tournament Lawley Chess tournament 2nd 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 4	type Rapid	result 1
		Opponent Nyembe, X (Xolile)				Opponent Methembe, N (Nhlengethwa)
2	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 7	type Blitz	result 0.5	date 2024-07-21	rnd 7	type Blitz	result 0.5
		Opponent Williams, M (Mohua Benton)				Opponent Williams, M (Mohua Benton)
3	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 3	type Blitz	result 1	date 2024-07-21	rnd 3	type Blitz	result 1
		Opponent Hlongwane, S (Sandile)				Opponent Hlongwane, S (Sandile)

#	Games	Start				End
1	1	Tournament Lawley Chess Tournament 2024				Tournament Lawley Chess Tournament 2024
		date 2024-03-30	rnd 6	type Standard	result 0.5	date 2024-03-30	rnd 6	type Standard	result 0.5
		Opponent Nyirenda, SS (Stanford)				Opponent Nyirenda, SS (Stanford)
2	1	Tournament Lawley Chess Tournament 2024				Tournament Lawley Chess Tournament 2024
		date 2024-03-30	rnd 4	type Standard	result 1	date 2024-03-30	rnd 4	type Standard	result 1
		Opponent Williams, S (Shepard)				Opponent Williams, S (Shepard)
3	1	Tournament Lawley Chess Tournament 2024				Tournament Lawley Chess Tournament 2024
		date 2024-03-30	rnd 1	type Standard	result 1	date 2024-03-30	rnd 1	type Standard	result 1
		Opponent Williams, M (Mohua Benton)				Opponent Williams, M (Mohua Benton)

#	Games	Start				End
1	2	Tournament Lawley Chess tournament 2nd 2025				Tournament Lawley Chess tournament 2nd 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 4	type Rapid	result 1
		Opponent Nyembe, X (Xolile)				Opponent Methembe, N (Nhlengethwa)

#	Games	Start				End
1	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 7	type Blitz	result 0.5	date 2024-07-21	rnd 7	type Blitz	result 0.5
		Opponent Williams, M (Mohua Benton)				Opponent Williams, M (Mohua Benton)
2	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 3	type Blitz	result 1	date 2024-07-21	rnd 3	type Blitz	result 1
		Opponent Hlongwane, S (Sandile)				Opponent Hlongwane, S (Sandile)
3	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 1	type Blitz	result 1	date 2024-07-21	rnd 1	type Blitz	result 1
		Opponent Nyirenda, SS (Stanford)				Opponent Nyirenda, SS (Stanford)

#	Games	Start				End
1	2	Tournament Lawley Chess tournament 2nd 2025				Tournament Lawley Chess tournament 2nd 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 4	type Rapid	result 1
		Opponent Nyembe, X (Xolile)				Opponent Methembe, N (Nhlengethwa)
2	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 3	type Blitz	result 1	date 2024-07-21	rnd 3	type Blitz	result 1
		Opponent Hlongwane, S (Sandile)				Opponent Hlongwane, S (Sandile)
3	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 1	type Blitz	result 1	date 2024-07-21	rnd 1	type Blitz	result 1
		Opponent Nyirenda, SS (Stanford)				Opponent Nyirenda, SS (Stanford)

#	Games	Start				End
1	1	Tournament Lawley Chess Tournament 2024				Tournament Lawley Chess Tournament 2024
		date 2024-03-30	rnd 4	type Standard	result 1	date 2024-03-30	rnd 4	type Standard	result 1
		Opponent Williams, S (Shepard)				Opponent Williams, S (Shepard)
2	1	Tournament Lawley Chess Tournament 2024				Tournament Lawley Chess Tournament 2024
		date 2024-03-30	rnd 1	type Standard	result 1	date 2024-03-30	rnd 1	type Standard	result 1
		Opponent Williams, M (Mohua Benton)				Opponent Williams, M (Mohua Benton)
3	1	Tournament Ekurhuleni Chess Chessa Open 2021				Tournament Ekurhuleni Chess Chessa Open 2021
		date 2021-03-27	rnd 4	type Standard	result 1	date 2021-03-27	rnd 4	type Standard	result 1
		Opponent Schaafsma, A (Andrew)				Opponent Schaafsma, A (Andrew)

#	Games	Start				End
1	2	Tournament Lawley Chess tournament 2nd 2025				Tournament Lawley Chess tournament 2nd 2025
		date 2025-03-28	rnd 3	type Rapid	result 1	date 2025-03-28	rnd 4	type Rapid	result 1
		Opponent Nyembe, X (Xolile)				Opponent Methembe, N (Nhlengethwa)

#	Games	Start				End
1	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 3	type Blitz	result 1	date 2024-07-21	rnd 3	type Blitz	result 1
		Opponent Hlongwane, S (Sandile)				Opponent Hlongwane, S (Sandile)
2	1	Tournament Lawley Blitz Tournament 2024				Tournament Lawley Blitz Tournament 2024
		date 2024-07-21	rnd 1	type Blitz	result 1	date 2024-07-21	rnd 1	type Blitz	result 1
		Opponent Nyirenda, SS (Stanford)				Opponent Nyirenda, SS (Stanford)

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	Mazibuko ,S (Sanele)	3	0	-425	1	0	-425	1	0	-425	1	0	-425
1	Mazibuko ,S (Sanele)	3	1348.9	923.9	1	1200	923.9	1	1224.1	923.9	1	1200	923.9
2	Damari ,M (Mpho)	2	0	-425	1	0	-425	0	0	0	1	0	-425
2	Damari ,M (Mpho)	2	1181.3	756.3	1	1200	756.3	0	0	0	1	1200	756.3
3	Williams ,MB (Mohau Benton)	2	1.5	212.5	1	1	425	0	0	0	1	0.5	0
3	Williams ,MB (Mohau Benton)	2	1179.1	1391.6	1	1201.6	1604.1	0	0	0	1	1300	1179.1
4	Nyirenda ,SS (Stanford Siheriden)	2	1.5	212.5	1	0.5	0	0	0	0	1	1	425
4	Nyirenda ,SS (Stanford Siheriden)	2	1286.9	1499.4	1	1300	1286.9	0	0	0	1	1300	1711.9
5	Terblanche ,L (Lione)	2	0	-425	1	0	-425	0	0	0	1	0	-425
5	Terblanche ,L (Lione)	2	1260.9	835.9	1	1200	835.9	0	0	0	1	1200	835.9
6	Macdonald ,B (Brandon)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Macdonald ,B (Brandon)	1	1383.8	958.8	1	1373	958.8	0	0	0	0	0	0
7	Congolo ,S (Sipho)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Congolo ,S (Sipho)	1	1320.7	895.7	1	1268.9	895.7	0	0	0	0	0	0
8	Williams ,S (Shepard)	1	1	425	1	1	425	0	0	0	0	0	0
8	Williams ,S (Shepard)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Aldum ,C (Carla)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Aldum ,C (Carla)	1	1397.3	972.3	1	1375	972.3	0	0	0	0	0	0
10	Mashale ,N (Nsuku)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Mashale ,N (Nsuku)	1	1140.6	715.6	1	1128	715.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Zhou, A (Author)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms