Chess South Africa Ratings Database

PLAYER PAGE

Personal

Yao, Y (Yizheng)

Chess SA id

1110313436

FIDE id

Date of birth

2011-05-16 (U16)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-19

Personal details last changed

1900-01-01

Junior GPX Games

23.3

Junior GPX Points

1170.7

Item	Main	Standard	Rapid	Blitz
Rating	1271.4	1273.4	1228.2	1200
Raw rating	1271.4	1273.4	1226.3	1200
Weighted rating	1250	1241.6	1228.2	1200
Weighted performance	1152.8	0	0	0
Floor	783.3	773.4	760	700
K-factor	36	36	36	36
Min/Max rating change allowed	149.8	149.3	159.7	165.8
Highest rating	1283.3 2025-04-01	1273.4 2025-04-01	1260 2024-12-01	1200 2024-12-01
Highest raw rating	1283.3 2025-04-01	1273.4 2025-04-01	1260 2024-12-01	1200 2024-12-01
Highest weighted rating	1243 2025-08-01	1233.2 2025-08-01	1226.3 2025-08-01	1200 2024-12-01
Highest weighted performance	1260.7 2025-04-01	1200 2024-12-01	1200 2024-12-01	1200 2024-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0.5	0
New rating	1271.4	1273.4	1228.7	1200
Analysis
Rating	1271.4	1273.4	1228.2	1200
Raw rating	1271.4	1273.4	1226.3	1200
Weighted rating	1250	1241.6	1228.2
Weighted performance	1152.8	0	0
K-factor	36	36	36	36
Floor	783.3	773.4	760	700
Max/Min rating change allowed	149.8	149.3	159.7	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	1271.4	1273.4	1226.3	1200
New weighted rating	1253.1	1245.4	1228.7	1200
New weighted performance	1152.3	0	0	0
Temp new rating	1271.4	1273.4	1228.7	1200
Temp new rating +/-	0	0	0.5	0
Final new rating +/-	0	0	0.5	0
New rating	1271.4	1273.4	1228.7	1200
New K-factor	36	36	36	36
New floor	783.3	773.4	760	700

Item	Main	Standard	Rapid
	0	0	0
	25	12	13
	10	4	6
	0	0	0
	0	0	0
	0	0	0
History	35	16	19

Games since
	Main 35	Standard 16		Rapid 19		Blitz 0
Gender	Male
Age group	U16
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	25	11.5	46	-34	1285.3	1251.3
Standard	12	6.5	54.17	35.4	1267.7	1303.1
Rapid	13	5	38.46	-98.1	1301.5	1203.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	35	18.5	52.86	24.3	1279.2	1303.5
Standard	16	9.5	59.38	79.7	1259.8	1339.4
Rapid	19	9	47.37	-22.4	1295.6	1273.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1271.4	1273.4	1226.3	1200
2025-09-01	1271.4	1273.4	1226.3	1200
2025-08-01	1271.4	1273.4	1226.3	1200
2025-07-01	1283.3	1273.4	1237.4	1200
2025-06-01	1283.3	1273.4	1237.4	1200
2025-05-01	1283.3	1273.4	1237.4	1200
2025-04-01	1283.3	1273.4	1237.4	1200
2025-03-01	1253.7	1228.5	1260	1200
2025-02-01	1268.9	1238.4	1260	1200
2025-01-01	1268.9	1238.4	1260	1200
2024-12-01	1237.9	1200	1260	1200
2024-11-01	1200	1200	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	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	3	Yes	Analysis
2	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
3	Western Cape Closed 2025 (C)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
4	Cape of Good Hope Open 2025 (Intermediate)	2025-02-22	2025-02-23	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	3	Yes	Analysis
2	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
3	Western Cape Closed 2025 (C)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
4	Cape of Good Hope Open 2025 (Intermediate)	2025-02-22	2025-02-23	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
5	2nd Strategize To Win Round-Robin Tournament ACL 2024 (H)	2024-12-07	2024-12-07	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis
6	Chess Challengers Championship 2024 (U13)	2024-11-23	2024-11-23	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis

#	Games	Start				End
1	5	Tournament Chess Challengers Championship 2024				Tournament 2nd Strategize To Win Round-Robin Tournament ACL 2024
		date 2024-11-23	rnd 6	type Rapid	result 1	date 2024-12-07	rnd 5	type Standard	result 0.5
		Opponent Russell, C (Caleb)				Opponent Kotze, J (Johann)
2	3	Tournament Western Cape Closed 2025				Tournament Western Cape Closed 2025
		date 2025-03-09	rnd 4	type Standard	result 1	date 2025-03-09	rnd 6	type Standard	result 0.5
		Opponent Ntswayi, L (Lazola)				Opponent Gcuze, K (Khanya)
3	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 2	type Rapid	result 1	date 2025-03-21	rnd 3	type Rapid	result 1
		Opponent Dollie, Y (Yaqeen)				Opponent Rudman, D (Diego)

#	Games	Start				End
1	4	Tournament 2nd Strategize To Win Round-Robin Tournament ACL 2024				Tournament 2nd Strategize To Win Round-Robin Tournament ACL 2024
		date 2024-12-07	rnd 2	type Standard	result 1	date 2024-12-07	rnd 5	type Standard	result 0.5
		Opponent Kotliar, B (Beatrisa)				Opponent Kotze, J (Johann)
2	3	Tournament Western Cape Closed 2025				Tournament Western Cape Closed 2025
		date 2025-03-09	rnd 4	type Standard	result 1	date 2025-03-09	rnd 6	type Standard	result 0.5
		Opponent Ntswayi, L (Lazola)				Opponent Gcuze, K (Khanya)
3	2	Tournament Cape of Good Hope Open 2025				Tournament Western Cape Closed 2025
		date 2025-02-23	rnd 6	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Petersen, KC (Krystle Chantil)				Opponent Shasha, I (Iyanda)

#	Games	Start				End
1	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 2	type Rapid	result 1	date 2025-03-21	rnd 3	type Rapid	result 1
		Opponent Dollie, Y (Yaqeen)				Opponent Rudman, D (Diego)
2	2	Tournament Chess Challengers Championship 2024				Tournament Chess Challengers Championship 2024
		date 2024-11-23	rnd 1	type Rapid	result 1	date 2024-11-23	rnd 2	type Rapid	result 1
		Opponent Koegelenberg, O (Olivia)				Opponent Ismail, Y (Yusha)
3	1	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 6	type Rapid	result 1
		Opponent Smith, A (Alexander)				Opponent Smith, A (Alexander)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 2	type Rapid	result 1	date 2025-03-21	rnd 3	type Rapid	result 1
		Opponent Dollie, Y (Yaqeen)				Opponent Rudman, D (Diego)
2	2	Tournament Western Cape Closed 2025				Tournament Western Cape Closed 2025
		date 2025-03-09	rnd 4	type Standard	result 1	date 2025-03-09	rnd 5	type Standard	result 1
		Opponent Ntswayi, L (Lazola)				Opponent Sihamba, S (Somila)
3	2	Tournament Cape of Good Hope Open 2025				Tournament Western Cape Closed 2025
		date 2025-02-23	rnd 6	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Petersen, KC (Krystle Chantil)				Opponent Shasha, I (Iyanda)

#	Games	Start				End
1	2	Tournament Western Cape Closed 2025				Tournament Western Cape Closed 2025
		date 2025-03-09	rnd 4	type Standard	result 1	date 2025-03-09	rnd 5	type Standard	result 1
		Opponent Ntswayi, L (Lazola)				Opponent Sihamba, S (Somila)
2	2	Tournament Cape of Good Hope Open 2025				Tournament Western Cape Closed 2025
		date 2025-02-23	rnd 6	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Petersen, KC (Krystle Chantil)				Opponent Shasha, I (Iyanda)
3	1	Tournament Cape of Good Hope Open 2025				Tournament Cape of Good Hope Open 2025
		date 2025-02-23	rnd 4	type Standard	result 1	date 2025-02-23	rnd 4	type Standard	result 1
		Opponent De Kock, W (Wium)				Opponent De Kock, W (Wium)

#	Games	Start				End
1	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 2	type Rapid	result 1	date 2025-03-21	rnd 3	type Rapid	result 1
		Opponent Dollie, Y (Yaqeen)				Opponent Rudman, D (Diego)
2	2	Tournament Chess Challengers Championship 2024				Tournament Chess Challengers Championship 2024
		date 2024-11-23	rnd 1	type Rapid	result 1	date 2024-11-23	rnd 2	type Rapid	result 1
		Opponent Koegelenberg, O (Olivia)				Opponent Ismail, Y (Yusha)
3	1	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 6	type Rapid	result 1	date 2025-07-19	rnd 6	type Rapid	result 1
		Opponent Smith, A (Alexander)				Opponent Smith, A (Alexander)

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	De Kock ,W (Wium)	1	1	425	1	1	425	0	0	0	0	0	0
1	De Kock ,W (Wium)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Petersen ,KC (Krystle Chantil)	1	1	425	1	1	425	0	0	0	0	0	0
2	Petersen ,KC (Krystle Chantil)	1	1184.7	1609.7	1	1200.6	1609.7	0	0	0	0	0	0
3	Du Plessis ,T (Tjaard)	1	1	425	1	1	425	0	0	0	0	0	0
3	Du Plessis ,T (Tjaard)	1	1185.4	1610.4	1	1193.3	1610.4	0	0	0	0	0	0
4	Kotze ,J (Johann)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
4	Kotze ,J (Johann)	1	1231.3	1231.3	1	1251.2	1231.3	0	0	0	0	0	0
5	Singh ,A (Aadiv)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Singh ,A (Aadiv)	1	1238.2	1238.2	1	1164	1238.2	0	0	0	0	0	0
6	Ntswayi ,L (Lazola)	1	1	425	1	1	425	0	0	0	0	0	0
6	Ntswayi ,L (Lazola)	1	1164.1	1589.1	1	1154.8	1589.1	0	0	0	0	0	0
7	Tjale ,P (Phillipmaite)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Tjale ,P (Phillipmaite)	1	1343	918	1	1343.6	918	0	0	0	0	0	0
8	Gcuze ,K (Khanya)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Gcuze ,K (Khanya)	1	1351.3	1351.3	1	1328.8	1351.3	0	0	0	0	0	0
9	Sihamba ,S (Somila)	1	1	425	1	1	425	0	0	0	0	0	0
9	Sihamba ,S (Somila)	1	1332.5	1757.5	1	1346.8	1757.5	0	0	0	0	0	0
10	Dollie ,Z (Zaeem)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Dollie ,Z (Zaeem)	1	1200	775	0	0	0	1	1200	775	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Yao, Y (Yizheng)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms