Chess South Africa Ratings Database

PLAYER PAGE

Personal

Chen, Y (Yan-Ru)

Chess SA id

2080153955

FIDE id

Date of birth

2008-01-14 (U18)

Gender

Female

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1186.2	1178	1204.1	1200
Raw rating	1185.9	1177.8	1204.1	1200
Weighted rating	1186.2	1178	1202.3	1200
Weighted performance	0	0	0	0
Floor	700	700	704.1	700
K-factor	36	36	36	36
Min/Max rating change allowed	169.2	171.1	164.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1204.1 2025-04-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1204.1 2025-04-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1201.5 2025-08-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.1	0	0	0
New rating	1186.3	1178	1204.1	1200
Analysis
Rating	1186.2	1178	1204.1	1200
Raw rating	1185.9	1177.8	1204.1	1200
Weighted rating	1186.2	1178	1202.3
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	704.1	700
Max/Min rating change allowed	169.2	171.1	164.8	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	1185.9	1177.8	1204.1	1200
New weighted rating	1186.3	1178	1202.5	1200
New weighted performance	0	0	0	0
Temp new rating	1186.3	1178	1204.1	1200
Temp new rating +/-	0.1	0	0	0
Final new rating +/-	0.1	0	0	0
New rating	1186.3	1178	1204.1	1200
New K-factor	36	36	36	36
New floor	700	700	704.1	700

Item	Main	Standard	Rapid
	0	0	0
	9	3	6
	7	7	0
	7	7	0
	0	0	0
	0	0	0
History	23	17	6

Games since
	Main 16	Standard 10		Rapid 6		Blitz 0
Gender	Female
Age group	U18
Region	Mangaung (FMB)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-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	9	3	33.33	-141.7	1292.8	1151.2
Standard	3	0	0	-425	1427.7	1002.7
Rapid	6	3	50	0	1225.4	1225.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	23	9	39.13	-92.4	1247.5	1155.1
Standard	17	6	35.29	-125	1255.3	1130.3
Rapid	6	3	50	0	1225.4	1225.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1185.9	1177.8	1204.1	1200
2025-09-30	1185.9	1177.8	1204.1	1200
2025-09-01	1185.9	1177.8	1204.1	1200
2025-08-01	1185.9	1177.8	1204.1	1200
2025-07-01	1185.7	1177.6	1204.1	1200
2025-06-01	1184.3	1175.8	1204.1	1200
2025-05-01	1192	1179.1	1204.1	1200
2025-04-01	1192	1179.1	1204.1	1200
2025-03-01	1186.7	1179.1	1200	1200
2025-02-01	1186.7	1179.1	1200	1200
2025-01-01	1186.7	1179.1	1200	1200
2024-12-01	1186.7	1179.1	1200	1200
2024-11-01	1186.7	1179.1	1200	1200
2024-10-01	1186.7	1179.1	1200	1200
2024-09-01	1186.7	1179.1	1200	1200
2024-08-01	1186.7	1179.1	1200	1200
2024-07-01	1181.3	1175.5	1200	1200
2024-09-01	1181.3	1175.5	1200	1200
2024-05-01	1181.3	1175.5	1200	1200
2024-04-01	1181.3	1175.5	1200	1200
2024-03-01	1181.3	1175.5	1200	1200
2024-02-01	1181.3	1175.5	1200	1200
2024-01-01	1181.3	1175.5	1200	1200
2023-12-01	1181.3	1175.5	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	2025 KZN Open (B)	2025-05-02	2025-05-04	Standard	Ethekwini (KED)	7	3	0	Yes	Analysis
2	2025 St Henry's Marist College High School Open Rapid	2025-03-15	2025-03-15	Rapid	Ethekwini (KED)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 KZN Open (B)	2025-05-02	2025-05-04	Standard	Ethekwini (KED)	7	3	0	Yes	Analysis
2	2025 St Henry's Marist College High School Open Rapid	2025-03-15	2025-03-15	Rapid	Ethekwini (KED)	6	6	3	Yes	Analysis
3	South African Open Chess Championship 2024 (B)	2024-06-29	2024-07-07	Standard	Ethekwini (KED)	11	0	0	No	Analysis
4	South African Open Chess Championship 2024 (C)	2024-07-04	2024-07-07	Standard	Ethekwini (KED)	7	7	3	Yes	Analysis
5	National All Girls Festival 2023	2023-04-28	2023-04-30	Standard	Mangaung (FMB)	7	7	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2025 St Henry's Marist College High School Open Rapid				Tournament 2025 St Henry's Marist College High School Open Rapid
		date 2025-03-15	rnd 4	type Rapid	result 1	date 2025-03-15	rnd 5	type Rapid	result 1
		Opponent Kara, N (Nuhaa)				Opponent Frankson, A (Alexander)
2	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-06	rnd 6	type Standard	result 1	date 2024-07-07	rnd 7	type Standard	result 1
		Opponent Tahuwona, J (Jaylene)				Opponent Mbeje, U (Uminathi)
3	2	Tournament National All Girls Festival 2023				Tournament National All Girls Festival 2023
		date 2023-04-28	rnd 2	type Standard	result 1	date 2023-04-28	rnd 3	type Standard	result 1
		Opponent Mothibeli, M (Mpho)				Opponent Schmidt, L (Larike)

#	Games	Start				End
1	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-06	rnd 6	type Standard	result 1	date 2024-07-07	rnd 7	type Standard	result 1
		Opponent Tahuwona, J (Jaylene)				Opponent Mbeje, U (Uminathi)
2	2	Tournament National All Girls Festival 2023				Tournament National All Girls Festival 2023
		date 2023-04-28	rnd 2	type Standard	result 1	date 2023-04-28	rnd 3	type Standard	result 1
		Opponent Mothibeli, M (Mpho)				Opponent Schmidt, L (Larike)
3	1	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 2	type Standard	result 1	date 2024-07-04	rnd 2	type Standard	result 1
		Opponent Ngcobo, S (Sibulelo)				Opponent Ngcobo, S (Sibulelo)

#	Games	Start				End
1	2	Tournament 2025 St Henry's Marist College High School Open Rapid				Tournament 2025 St Henry's Marist College High School Open Rapid
		date 2025-03-15	rnd 4	type Rapid	result 1	date 2025-03-15	rnd 5	type Rapid	result 1
		Opponent Kara, N (Nuhaa)				Opponent Frankson, A (Alexander)
2	1	Tournament 2025 St Henry's Marist College High School Open Rapid				Tournament 2025 St Henry's Marist College High School Open Rapid
		date 2025-03-15	rnd 2	type Rapid	result 1	date 2025-03-15	rnd 2	type Rapid	result 1
		Opponent Jadwat, M (Muhammad)				Opponent Jadwat, M (Muhammad)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2025 St Henry's Marist College High School Open Rapid				Tournament 2025 St Henry's Marist College High School Open Rapid
		date 2025-03-15	rnd 4	type Rapid	result 1	date 2025-03-15	rnd 5	type Rapid	result 1
		Opponent Kara, N (Nuhaa)				Opponent Frankson, A (Alexander)
2	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-06	rnd 6	type Standard	result 1	date 2024-07-07	rnd 7	type Standard	result 1
		Opponent Tahuwona, J (Jaylene)				Opponent Mbeje, U (Uminathi)
3	2	Tournament National All Girls Festival 2023				Tournament National All Girls Festival 2023
		date 2023-04-28	rnd 2	type Standard	result 1	date 2023-04-28	rnd 3	type Standard	result 1
		Opponent Mothibeli, M (Mpho)				Opponent Schmidt, L (Larike)

#	Games	Start				End
1	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-06	rnd 6	type Standard	result 1	date 2024-07-07	rnd 7	type Standard	result 1
		Opponent Tahuwona, J (Jaylene)				Opponent Mbeje, U (Uminathi)
2	2	Tournament National All Girls Festival 2023				Tournament National All Girls Festival 2023
		date 2023-04-28	rnd 2	type Standard	result 1	date 2023-04-28	rnd 3	type Standard	result 1
		Opponent Mothibeli, M (Mpho)				Opponent Schmidt, L (Larike)
3	1	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 2	type Standard	result 1	date 2024-07-04	rnd 2	type Standard	result 1
		Opponent Ngcobo, S (Sibulelo)				Opponent Ngcobo, S (Sibulelo)

#	Games	Start				End
1	2	Tournament 2025 St Henry's Marist College High School Open Rapid				Tournament 2025 St Henry's Marist College High School Open Rapid
		date 2025-03-15	rnd 4	type Rapid	result 1	date 2025-03-15	rnd 5	type Rapid	result 1
		Opponent Kara, N (Nuhaa)				Opponent Frankson, A (Alexander)
2	1	Tournament 2025 St Henry's Marist College High School Open Rapid				Tournament 2025 St Henry's Marist College High School Open Rapid
		date 2025-03-15	rnd 2	type Rapid	result 1	date 2025-03-15	rnd 2	type Rapid	result 1
		Opponent Jadwat, M (Muhammad)				Opponent Jadwat, M (Muhammad)

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	Williams ,C (Cwenga)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Williams ,C (Cwenga)	1	1216.6	791.6	1	1200	791.6	0	0	0	0	0	0
2	Masiteng ,N (Nkosikhona)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Masiteng ,N (Nkosikhona)	1	1302.7	877.7	1	1256.5	877.7	0	0	0	0	0	0
3	Tahuwona ,J (Jaylene)	1	1	425	1	1	425	0	0	0	0	0	0
3	Tahuwona ,J (Jaylene)	1	1182.9	1607.9	1	1167.3	1607.9	0	0	0	0	0	0
4	Shweni ,Z (Zama)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Shweni ,Z (Zama)	1	1139.7	714.7	1	1130.8	714.7	0	0	0	0	0	0
5	Moodley ,K (Kai)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Moodley ,K (Kai)	1	1447.9	1022.9	1	1442.8	1022.9	0	0	0	0	0	0
6	Hlutshwayo ,N (Nonjabulo)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Hlutshwayo ,N (Nonjabulo)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Mothibeli ,M (Mpho)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mothibeli ,M (Mpho)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Kooiman ,NS (Nicola Samia)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Kooiman ,NS (Nicola Samia)	1	1157.5	732.5	1	1149.6	732.5	0	0	0	0	0	0
9	Mulholland ,E (Emmy)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mulholland ,E (Emmy)	1	1333.7	908.7	1	1377.4	908.7	0	0	0	0	0	0
10	Ndlovu ,L (Luthando)	1	1	425	1	1	425	0	0	0	0	0	0
10	Ndlovu ,L (Luthando)	1	1143.6	1568.6	1	1131.6	1568.6	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

Chen, Y (Yan-Ru)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms