Chess South Africa Ratings Database

PLAYER PAGE

Personal

Han, J (Jiayin)

Chess SA id

1080133075

FIDE id

Date of birth

2008-11-10 (U18)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1200	1200	1169.4	1200
Raw rating	1200	1200	1161	1200
Weighted rating	1195.9	1200	1169.4	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	165.8	165.8	175.3	165.8
Highest rating	1287 2024-06-01	1200 2018-10-01	1202.2 2024-06-01	1200 2018-10-01
Highest raw rating	1200 2025-09-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1287 2024-06-01	1200 2024-02-01	1202.2 2024-06-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-1.2	0
New rating	1200	1200	1168.3	1200
Analysis
Rating	1200	1200	1169.4	1200
Raw rating	1200	1200	1161	1200
Weighted rating	1195.9	1200	1169.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	165.8	165.8	175.3	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	1200	1200	1161	1200
New weighted rating	1196.2	1200	1168.3	1200
New weighted performance	0	0	0	0
Temp new rating	1200	1200	1168.3	1200
Temp new rating +/-	0	0	-1.2	0
Final new rating +/-	0	0	-1.2	0
New rating	1200	1200	1168.3	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Rapid
	0	0
	5	5
	8	8
	0	0
	0	0
	0	0
History	13	13

Games since
	Main 13	Standard 0		Rapid 13		Blitz 0
Gender	Male
Age group	U18
Region	Johannesburg Metro (GJM)
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	5	2	40	-85	1443.6	1358.6
Standard	0	0	0	0	0	0
Rapid	5	2	40	-85	1443.6	1358.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	13	5	38.46	-98.1	1373.9	1275.9
Standard	0	0	0	0	0	0
Rapid	13	5	38.46	-98.1	1373.9	1275.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1200	1200	1161	1200
2025-09-01	1200	1200	1161	1200
2025-08-01	1195.8	1200	1174.9	1200
2025-07-01	1195.8	1200	1174.9	1200
2025-06-01	1195.8	1200	1174.9	1200
2025-05-01	1195.8	1200	1174.9	1200
2025-04-01	1195.8	1200	1174.9	1200
2025-03-01	1195.8	1200	1174.9	1200
2025-02-01	1195.6	1200	1174	1200
2025-01-01	1192	1200	1152.5	1200
2024-12-01	1192	1200	1152.5	1200
2024-11-01	1192	1200	1152.5	1200
2024-10-01	1192	1200	1152.5	1200
2024-09-01	1192	1200	1152.5	1200
2024-08-01	1192	1200	1152.5	1200
2024-07-01	1192	1200	1152.5	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	JCC - SAHETI Chess League 2025	2025-05-12	2025-06-09	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	JCC - SAHETI Chess League 2025	2025-05-12	2025-06-09	Rapid	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
2	JCC SAHETI High Schools League Round Robin 2024	2024-05-20	2024-06-10	Rapid	Johannesburg Metro (GJM)	7	7	2	Yes	Analysis
3	JCC SAHETI High Schools League Round Robin 2024	2024-05-20	2024-06-10	Rapid	Johannesburg Metro (GJM)	7	1	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament JCC SAHETI High Schools League Round Robin 2024				Tournament JCC SAHETI High Schools League Round Robin 2024
		date 2024-06-03	rnd 4	type Rapid	result 0.5	date 2024-06-10	rnd 6	type Rapid	result 1
		Opponent James, D (Daniel)				Opponent Mafinya, T (Thama)
2	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-06-02	rnd 4	type Rapid	result 1	date 2025-06-02	rnd 4	type Rapid	result 1
		Opponent Mushamba, G (Gladys Tamatswa)				Opponent Mushamba, G (Gladys Tamatswa)
3	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-05-12	rnd 1	type Rapid	result 1	date 2025-05-12	rnd 1	type Rapid	result 1
		Opponent Hurgobin, N (Neha)				Opponent Hurgobin, N (Neha)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament JCC SAHETI High Schools League Round Robin 2024				Tournament JCC SAHETI High Schools League Round Robin 2024
		date 2024-06-03	rnd 4	type Rapid	result 0.5	date 2024-06-10	rnd 6	type Rapid	result 1
		Opponent James, D (Daniel)				Opponent Mafinya, T (Thama)
2	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-06-02	rnd 4	type Rapid	result 1	date 2025-06-02	rnd 4	type Rapid	result 1
		Opponent Mushamba, G (Gladys Tamatswa)				Opponent Mushamba, G (Gladys Tamatswa)
3	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-05-12	rnd 1	type Rapid	result 1	date 2025-05-12	rnd 1	type Rapid	result 1
		Opponent Hurgobin, N (Neha)				Opponent Hurgobin, N (Neha)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament JCC SAHETI High Schools League Round Robin 2024				Tournament JCC SAHETI High Schools League Round Robin 2024
		date 2024-06-03	rnd 4	type Rapid	result 0.5	date 2024-06-10	rnd 6	type Rapid	result 1
		Opponent James, D (Daniel)				Opponent Mafinya, T (Thama)
2	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-06-02	rnd 4	type Rapid	result 1	date 2025-06-02	rnd 4	type Rapid	result 1
		Opponent Mushamba, G (Gladys Tamatswa)				Opponent Mushamba, G (Gladys Tamatswa)
3	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-05-12	rnd 1	type Rapid	result 1	date 2025-05-12	rnd 1	type Rapid	result 1
		Opponent Hurgobin, N (Neha)				Opponent Hurgobin, N (Neha)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament JCC SAHETI High Schools League Round Robin 2024				Tournament JCC SAHETI High Schools League Round Robin 2024
		date 2024-06-03	rnd 4	type Rapid	result 0.5	date 2024-06-10	rnd 6	type Rapid	result 1
		Opponent James, D (Daniel)				Opponent Mafinya, T (Thama)
2	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-06-02	rnd 4	type Rapid	result 1	date 2025-06-02	rnd 4	type Rapid	result 1
		Opponent Mushamba, G (Gladys Tamatswa)				Opponent Mushamba, G (Gladys Tamatswa)
3	1	Tournament JCC - SAHETI Chess League 2025				Tournament JCC - SAHETI Chess League 2025
		date 2025-05-12	rnd 1	type Rapid	result 1	date 2025-05-12	rnd 1	type Rapid	result 1
		Opponent Hurgobin, N (Neha)				Opponent Hurgobin, N (Neha)

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	Froom ,J (Jacob)	2	0	-425	0	0	0	2	0	-425	0	0	0
1	Froom ,J (Jacob)	2	1450.8	1025.8	0	0	0	2	1235.9	1025.8	0	0	0
2	Levitan ,J (Judah)	2	0	-425	0	0	0	2	0	-425	0	0	0
2	Levitan ,J (Judah)	2	2170.6	1745.6	0	0	0	2	1386.7	1745.6	0	0	0
3	James ,D (Daniel)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	James ,D (Daniel)	1	1200	775	0	0	0	1	1200	775	0	0	0
4	Mafinya ,T (Thama)	1	1	425	0	0	0	1	1	425	0	0	0
4	Mafinya ,T (Thama)	1	1346.3	1771.3	0	0	0	1	1302.4	1771.3	0	0	0
5	Balassis ,P (Petro)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Balassis ,P (Petro)	1	1427	1002	0	0	0	1	1298	1002	0	0	0
6	Mushamba ,G (Gladys Tamatswa)	1	1	425	0	0	0	1	1	425	0	0	0
6	Mushamba ,G (Gladys Tamatswa)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
7	Correia ,T (Tomas)	1	1	425	0	0	0	1	1	425	0	0	0
7	Correia ,T (Tomas)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
8	Hurgobin ,N (Neha)	1	1	425	0	0	0	1	1	425	0	0	0
8	Hurgobin ,N (Neha)	1	845.1	1270.1	0	0	0	1	500	1270.1	0	0	0
9	Arokiam ,E (Ethan)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Arokiam ,E (Ethan)	1	1335.9	910.9	0	0	0	1	1168.7	910.9	0	0	0
10	Marcos-Zambakides ,G (Gabrielle)	1	1	425	0	0	0	1	1	425	0	0	0
10	Marcos-Zambakides ,G (Gabrielle)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Han, J (Jiayin)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms