Chess South Africa Ratings Database

PLAYER PAGE

Personal

Chen, J (Jianan)

Chess SA id

1090154938

FIDE id

Date of birth

2009-07-06 (U18)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

12.5

Junior GPX Points

1136.7

Item	Main	Standard	Rapid	Blitz
Rating	1169	1163.3	1230.4	1200
Raw rating	1169	1163.3	1230.4	1200
Weighted rating	1164	1156.6	1209.1	1200
Weighted performance	0	0	0	0
Floor	700	700	730.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	173.3	174.7	158.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1230.4 2025-07-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1230.4 2025-07-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1204.8 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	0	0	0
New rating	1169	1163.3	1230.4	1200
Analysis
Rating	1169	1163.3	1230.4	1200
Raw rating	1169	1163.3	1230.4	1200
Weighted rating	1164	1156.6	1209.1
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	730.4	700
Max/Min rating change allowed	173.3	174.7	158.8	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	1169	1163.3	1230.4	1200
New weighted rating	1164.5	1157.2	1211.2	1200
New weighted performance	0	0	0	0
Temp new rating	1169	1163.3	1230.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1169	1163.3	1230.4	1200
New K-factor	36	36	36	36
New floor	700	700	730.4	700

Item	Main	Standard	Rapid
	0	0	0
	15	10	5
	0	0	0
	5	5	0
	0	0	0
	0	0	0
History	20	15	5

Games since
	Main 15	Standard 10		Rapid 5		Blitz 0
Gender	Male
Age group	U18
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	15	6	40	-85	1294.9	1209.9
Standard	10	3	30	-170	1271.6	1101.6
Rapid	5	3	60	85	1341.5	1426.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	20	7	35	-127.5	1280.4	1152.9
Standard	15	4	26.67	-198.3	1260	1061.7
Rapid	5	3	60	85	1341.5	1426.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1169	1163.3	1230.4	1200
2025-09-01	1169	1163.3	1230.4	1200
2025-08-01	1163.2	1155.1	1230.4	1200
2025-07-01	1163.2	1152.7	1230.4	1200
2025-06-01	1163.3	1155.8	1200	1200
2025-05-01	1163.3	1155.8	1200	1200
2025-04-01	1163.3	1155.8	1200	1200
2025-03-01	1163.3	1155.8	1200	1200
2025-02-01	1163.3	1155.8	1200	1200
2025-01-01	1162.9	1155.4	1200	1200
2024-12-01	1162.9	1155.4	1200	1200
2024-11-01	1162.9	1155.4	1200	1200
2024-10-01	1162.9	1155.4	1200	1200
2024-09-01	1162.9	1155.4	1200	1200
2024-08-01	1162.9	1155.4	1200	1200
2024-07-01	1162.9	1155.4	1200	1200
2024-06-01	1162.9	1155.4	1200	1200
2024-08-01	1162.9	1155.4	1200	1200
2024-04-01	1162.9	1155.4	1200	1200
2024-03-01	1162.9	1155.4	1200	1200
2024-02-01	1162.9	1155.4	1200	1200
2024-01-01	1162.9	1155.4	1200	1200
2023-12-01	1162.9	1155.4	1200	1200
2023-11-01	1162.9	1155.4	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	Ekurhuleni North Schools Teams 2025 (U17 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
2	Ekurhuleni North School District Finals 2025 (U18 Boys)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
3	Kemptonpark School Cluster 2025 (U18)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Ekurhuleni North Schools Teams 2025 (U17 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
2	Ekurhuleni North School District Finals 2025 (U18 Boys)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
3	Kemptonpark School Cluster 2025 (U18)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
4	Kempton Park Cluster Individuals 2024 (U15 Boys)	2024-03-02	2024-03-02	Rapid	Ekurhuleni (GE)	6	0	0	No	Analysis
5	Ekurhuleni North Schools Individual Finals 2023 (U15 Boys)	2023-05-13	2023-05-13	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament Kemptonpark School Cluster 2025				Tournament Kemptonpark School Cluster 2025
		date 2025-06-07	rnd 1	type Rapid	result 1	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Phogojane, B (Badirile)				Opponent Mamoyabo, S (Sehlakgoe)
2	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Jacobs, L (Leandre)				Opponent Ntsimane, B (Banele)
3	1	Tournament Ekurhuleni North School District Finals 2025				Tournament Ekurhuleni North School District Finals 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-06-14	rnd 4	type Standard	result 1
		Opponent Nuvunga, E (Egyp)				Opponent Nuvunga, E (Egyp)

#	Games	Start				End
1	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Jacobs, L (Leandre)				Opponent Ntsimane, B (Banele)
2	1	Tournament Ekurhuleni North School District Finals 2025				Tournament Ekurhuleni North School District Finals 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-06-14	rnd 4	type Standard	result 1
		Opponent Nuvunga, E (Egyp)				Opponent Nuvunga, E (Egyp)
3	1	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-13	rnd 4	type Standard	result 1	date 2023-05-13	rnd 4	type Standard	result 1
		Opponent Mashego, T (Thapelo)				Opponent Mashego, T (Thapelo)

#	Games	Start				End
1	3	Tournament Kemptonpark School Cluster 2025				Tournament Kemptonpark School Cluster 2025
		date 2025-06-07	rnd 1	type Rapid	result 1	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Phogojane, B (Badirile)				Opponent Mamoyabo, S (Sehlakgoe)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Kemptonpark School Cluster 2025				Tournament Kemptonpark School Cluster 2025
		date 2025-06-07	rnd 1	type Rapid	result 1	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Phogojane, B (Badirile)				Opponent Mamoyabo, S (Sehlakgoe)
2	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Jacobs, L (Leandre)				Opponent Ntsimane, B (Banele)
3	1	Tournament Ekurhuleni North School District Finals 2025				Tournament Ekurhuleni North School District Finals 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-06-14	rnd 4	type Standard	result 1
		Opponent Nuvunga, E (Egyp)				Opponent Nuvunga, E (Egyp)

#	Games	Start				End
1	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Jacobs, L (Leandre)				Opponent Ntsimane, B (Banele)
2	1	Tournament Ekurhuleni North School District Finals 2025				Tournament Ekurhuleni North School District Finals 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-06-14	rnd 4	type Standard	result 1
		Opponent Nuvunga, E (Egyp)				Opponent Nuvunga, E (Egyp)
3	1	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-13	rnd 4	type Standard	result 1	date 2023-05-13	rnd 4	type Standard	result 1
		Opponent Mashego, T (Thapelo)				Opponent Mashego, T (Thapelo)

#	Games	Start				End
1	3	Tournament Kemptonpark School Cluster 2025				Tournament Kemptonpark School Cluster 2025
		date 2025-06-07	rnd 1	type Rapid	result 1	date 2025-06-07	rnd 3	type Rapid	result 1
		Opponent Phogojane, B (Badirile)				Opponent Mamoyabo, S (Sehlakgoe)

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	Chavula ,C (Charles)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Chavula ,C (Charles)	2	1467.4	1042.4	1	1440.7	1042.4	1	1312.6	1042.4	0	0	0
2	Ntanta ,T (Thabiso)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Ntanta ,T (Thabiso)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Mosoane ,T (Tokello)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Mosoane ,T (Tokello)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Rapuleng ,R (Rapulang)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Rapuleng ,R (Rapulang)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Keet ,R (Robert)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Keet ,R (Robert)	1	1290.7	865.7	1	1265.5	865.7	0	0	0	0	0	0
6	Nuvunga ,E (Egyp)	1	1	425	1	1	425	0	0	0	0	0	0
6	Nuvunga ,E (Egyp)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Ntsimane ,B (Banele)	1	1	425	1	1	425	0	0	0	0	0	0
7	Ntsimane ,B (Banele)	1	1278	1703	1	1294.8	1703	0	0	0	0	0	0
8	Del Grosso ,G (Gianluca Gabriele)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Del Grosso ,G (Gianluca Gabriele)	1	1384.6	959.6	1	1384.2	959.6	0	0	0	0	0	0
9	Moodley ,L (Lerelle)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Moodley ,L (Lerelle)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Nhuvunga ,J (Jededia Trinity)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nhuvunga ,J (Jededia Trinity)	1	1374.6	949.6	1	1373.2	949.6	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

Chen, J (Jianan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms