Chess South Africa Ratings Database

PLAYER PAGE

Personal

Miao, R (Ruichen)

Chess SA id

1110141974

FIDE id

Date of birth

2011-05-24 (U16)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1249.4	1177.6	1290.8	1197.1
Raw rating	1244.8	1177.6	1290.8	1163.3
Weighted rating	1249.4	1176.7	1289.2	1197.1
Weighted performance	1048	868.3	0	0
Floor	752.6	700	790.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	155.6	171.2	145.7	174.7
Highest rating	1305.3 2024-03-01	1200 2018-10-01	1361.4 2024-02-01	1200 2018-10-01
Highest raw rating	1252.6 2024-04-01	1200 2020-01-01	1290.8 2024-04-01	1200 2024-02-01
Highest weighted rating	1249.4 2025-11-01	1200 2018-10-01	1285.5 2025-08-01	1200 2018-10-01
Highest weighted performance	1305.3 2024-03-01	1200 2020-01-01	1361.4 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.6	0	0	-2.8
New rating	1250	1177.6	1290.8	1194.2
Analysis
Rating	1249.4	1177.6	1290.8	1197.1
Raw rating	1244.8	1177.6	1290.8	1163.3
Weighted rating	1249.4	1176.7	1289.2
Weighted performance	1048	868.3	0
K-factor	36	36	36	36
Floor	752.6	700	790.8	700
Max/Min rating change allowed	155.6	171.2	145.7	174.7
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	1244.8	1177.6	1290.8	1163.3
New weighted rating	1250	1177.2	1290	1194.2
New weighted performance	1040.9	861.4	0	0
Temp new rating	1250	1177.6	1290.8	1194.2
Temp new rating +/-	0.6	0	0	-2.8
Final new rating +/-	0.6	0	0	-2.8
New rating	1250	1177.6	1290.8	1194.2
New K-factor	36	36	36	36
New floor	752.6	700	790.8	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	8	0	0	8
	20	10	10	0
	5	5	0	0
	16	11	5	0
	0	0	0	0
History	49	26	15	8

Games since
	Main 28	Standard 10		Rapid 10		Blitz 8
Gender	Male
Age group	U16
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
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	8	3	37.5	-106.2	1265.8	1159.6
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	8	3	37.5	-106.2	1265.8	1159.6
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	49	23.5	47.96	-17.3	1246.3	1229
Standard	26	10.5	40.38	-81.7	1227	1145.3
Rapid	15	10	66.67	141.7	1269.3	1411
Blitz	8	3	37.5	-106.2	1265.8	1159.6

Date	Main	Standard	Rapid	Blitz
2025-11-01	1244.8	1177.6	1290.8	1163.3
2025-09-30	1252.6	1177.6	1290.8	1200
2025-09-01	1252.6	1177.6	1290.8	1200
2025-08-01	1252.6	1177.6	1290.8	1200
2025-07-01	1252.6	1177.6	1290.8	1200
2025-06-01	1252.6	1177.6	1290.8	1200
2025-05-01	1252.6	1177.6	1290.8	1200
2025-04-01	1252.6	1177.6	1290.8	1200
2025-03-01	1252.6	1177.6	1290.8	1200
2025-02-01	1252.6	1177.6	1290.8	1200
2025-01-01	1252.6	1177.6	1290.8	1200
2024-12-01	1252.6	1177.6	1290.8	1200
2024-11-01	1252.6	1177.6	1290.8	1200
2024-10-01	1252.6	1177.6	1290.8	1200
2024-09-01	1252.6	1177.6	1290.8	1200
2024-08-01	1252.6	1177.6	1290.8	1200
2024-07-01	1252.6	1177.6	1290.8	1200
2024-09-01	1252.6	1177.6	1290.8	1200
2024-05-01	1252.6	1177.6	1290.8	1200
2024-04-01	1252.6	1177.6	1290.8	1200
2024-03-01	1206.8	1161.6	1280.7	1200
2024-02-01	1166	1161.6	1218.4	1200
2024-01-01	1141.8	1125.2	1218.4	1200
2023-12-01	1141.8	1125.2	1218.4	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	Goue Liga Blitz 2025	2025-10-25	2025-10-25	Blitz	Johannesburg Metro (GJM)	9	8	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Goue Liga Blitz 2025	2025-10-25	2025-10-25	Blitz	Johannesburg Metro (GJM)	9	8	3	Yes	Analysis
2	CPH St Andrew's Rapid 2024 (B)	2024-03-30	2024-03-30	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
3	1st Knights Open Tournament 2024 (C)	2024-03-23	2024-03-23	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
4	Chess Power House 1st Rapid 2024 (B)	2024-02-24	2024-02-24	Rapid	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
5	JMC Kick Off Tournament 2024 (D)	2024-01-28	2024-01-28	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	JMC 1 St Peters 2023 (D)	2023-03-18	2023-03-18	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
7	JMC Womens Day 2022 (C)	2022-08-06	2022-08-07	Standard	Johannesburg Metro (GJM)	6	6	2	Yes	Analysis
8	Chessheroes Junior Challenge 2022 (U13)	2022-08-13	2022-08-13	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
9	Chess Power House Rapid 2022 (B)	2022-06-11	2022-06-11	Rapid	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis

#	Games	Start				End
1	5	Tournament Chess Power House 1st Rapid 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-02-24	rnd 2	type Rapid	result 1	date 2024-03-23	rnd 1	type Standard	result 1
		Opponent Nkuna, K (Khanya)				Opponent Seshabhatter, L (Lalith Aditya)
2	3	Tournament Chess Power House Rapid 2022				Tournament Chess Power House Rapid 2022
		date 2022-06-11	rnd 2	type Rapid	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Emechebe, C (Chiamaka)				Opponent Tshikhudo, R (Rofhiwa)
3	2	Tournament Goue Liga Blitz 2025				Tournament Goue Liga Blitz 2025
		date 2025-10-25	rnd 5	type Blitz	result 1	date 2025-10-25	rnd 6	type Blitz	result 1
		Opponent Ndlovu, T (Thandeka)				Opponent Nyandeni, B (Bongekile)

#	Games	Start				End
1	2	Tournament JMC Kick Off Tournament 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-01-28	rnd 5	type Standard	result 1	date 2024-03-23	rnd 1	type Standard	result 1
		Opponent Naicker, V (Victoria Angelique)				Opponent Seshabhatter, L (Lalith Aditya)
2	2	Tournament JMC Kick Off Tournament 2024				Tournament JMC Kick Off Tournament 2024
		date 2024-01-28	rnd 2	type Standard	result 1	date 2024-01-28	rnd 3	type Standard	result 1
		Opponent Magwentshu, L (Lisa)				Opponent Britz, G (Gian)
3	2	Tournament JMC 1 St Peters 2023				Tournament JMC 1 St Peters 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-03-18	rnd 2	type Standard	result 1
		Opponent Chadalavada, B (Bhaarghavarama)				Opponent Elangbam, K (Kernick)

#	Games	Start				End
1	4	Tournament Chess Power House 1st Rapid 2024				Tournament Chess Power House 1st Rapid 2024
		date 2024-02-24	rnd 2	type Rapid	result 1	date 2024-02-24	rnd 5	type Rapid	result 1
		Opponent Nkuna, K (Khanya)				Opponent Van De Venter, Z (Zandre)
2	3	Tournament Chess Power House Rapid 2022				Tournament Chess Power House Rapid 2022
		date 2022-06-11	rnd 2	type Rapid	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Emechebe, C (Chiamaka)				Opponent Tshikhudo, R (Rofhiwa)
3	2	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 4	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Teixeira, L (Lucenzo Salvatore)				Opponent Jordaan, M (Mikijl)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Chess Power House 1st Rapid 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-02-24	rnd 2	type Rapid	result 1	date 2024-03-23	rnd 1	type Standard	result 1
		Opponent Nkuna, K (Khanya)				Opponent Seshabhatter, L (Lalith Aditya)
2	3	Tournament Chess Power House Rapid 2022				Tournament Chess Power House Rapid 2022
		date 2022-06-11	rnd 2	type Rapid	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Emechebe, C (Chiamaka)				Opponent Tshikhudo, R (Rofhiwa)
3	2	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 4	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Teixeira, L (Lucenzo Salvatore)				Opponent Jordaan, M (Mikijl)

#	Games	Start				End
1	2	Tournament JMC Kick Off Tournament 2024				Tournament 1st Knights Open Tournament 2024
		date 2024-01-28	rnd 5	type Standard	result 1	date 2024-03-23	rnd 1	type Standard	result 1
		Opponent Naicker, V (Victoria Angelique)				Opponent Seshabhatter, L (Lalith Aditya)
2	2	Tournament JMC Kick Off Tournament 2024				Tournament JMC Kick Off Tournament 2024
		date 2024-01-28	rnd 2	type Standard	result 1	date 2024-01-28	rnd 3	type Standard	result 1
		Opponent Magwentshu, L (Lisa)				Opponent Britz, G (Gian)
3	2	Tournament JMC 1 St Peters 2023				Tournament JMC 1 St Peters 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-03-18	rnd 2	type Standard	result 1
		Opponent Chadalavada, B (Bhaarghavarama)				Opponent Elangbam, K (Kernick)

#	Games	Start				End
1	4	Tournament Chess Power House 1st Rapid 2024				Tournament Chess Power House 1st Rapid 2024
		date 2024-02-24	rnd 2	type Rapid	result 1	date 2024-02-24	rnd 5	type Rapid	result 1
		Opponent Nkuna, K (Khanya)				Opponent Van De Venter, Z (Zandre)
2	3	Tournament Chess Power House Rapid 2022				Tournament Chess Power House Rapid 2022
		date 2022-06-11	rnd 2	type Rapid	result 1	date 2022-06-11	rnd 4	type Rapid	result 1
		Opponent Emechebe, C (Chiamaka)				Opponent Tshikhudo, R (Rofhiwa)
3	2	Tournament CPH St Andrew's Rapid 2024				Tournament CPH St Andrew's Rapid 2024
		date 2024-03-30	rnd 4	type Rapid	result 1	date 2024-03-30	rnd 5	type Rapid	result 1
		Opponent Teixeira, L (Lucenzo Salvatore)				Opponent Jordaan, M (Mikijl)

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	Chadalavada ,B (Bhaarghavarama)	2	1	0	2	1	0	0	0	0	0	0	0
1	Chadalavada ,B (Bhaarghavarama)	2	1258.3	1258.3	2	1256.8	1258.3	0	0	0	0	0	0
2	Kwak ,J (Jaeson)	2	1	0	2	1	0	0	0	0	0	0	0
2	Kwak ,J (Jaeson)	2	1246	1246	2	1245.3	1246	0	0	0	0	0	0
3	Seshabhatter ,L (Lalith Aditya)	1	1	425	1	1	425	0	0	0	0	0	0
3	Seshabhatter ,L (Lalith Aditya)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Britz ,G (Gian)	1	1	425	1	1	425	0	0	0	0	0	0
4	Britz ,G (Gian)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Pillay De Bruyn ,T (Trystan)	1	1	425	1	1	425	0	0	0	0	0	0
5	Pillay De Bruyn ,T (Trystan)	1	1119.2	1544.2	1	1110	1544.2	0	0	0	0	0	0
6	Pillai ,A (Aidan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Pillai ,A (Aidan)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Kojetin ,C (Connor)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Kojetin ,C (Connor)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Williams ,J (Joshua)	1	1	425	1	1	425	0	0	0	0	0	0
8	Williams ,J (Joshua)	1	1183.7	1608.7	1	1180.8	1608.7	0	0	0	0	0	0
9	Steyn ,A (Anneke)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Steyn ,A (Anneke)	1	1203.1	778.1	1	1193	778.1	0	0	0	0	0	0
10	Zulu ,T (Thandoluhle)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Zulu ,T (Thandoluhle)	1	1408.2	983.2	1	1405.6	983.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Miao, R (Ruichen)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms