Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zhen, YJ (Ying Jun)

Chess SA id

1140303500

FIDE id

Date of birth

2014-03-30 (U12)

Gender

Male

Region

Buffalo City (EBC)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-24

Personal details last changed

2025-02-28

Junior GPX Games

44.2

Junior GPX Points

1154.8

Item	Main	Standard	Rapid	Blitz
Rating	1205.1	1208.9	1199.9	1200
Raw rating	1204.6	1208.1	1199.9	1200
Weighted rating	1205.1	1208.9	1199.9	1200
Weighted performance	1074.5	1082.3	0	0
Floor	726.6	747.1	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	164.7	163.9	165.8	165.8
Highest rating	1226.6 2025-05-05	1247.1 2025-04-01	1200 2024-05-01	1200 2024-05-01
Highest raw rating	1226.6 2025-05-05	1247.1 2025-04-01	1200 2024-05-01	1200 2024-05-01
Highest weighted rating	1226.6 2025-06-01	1247.1 2025-06-01	1200 2024-05-01	1200 2024-05-01
Highest weighted performance	1211.3 2025-04-01	1247.1 2024-12-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.1	0.2	0	0
New rating	1205.3	1209.1	1199.9	1200
Analysis
Rating	1205.1	1208.9	1199.9	1200
Raw rating	1204.6	1208.1	1199.9	1200
Weighted rating	1205.1	1208.9	1199.9
Weighted performance	1074.5	1082.3	0
K-factor	36	36	36	36
Floor	726.6	747.1	700	700
Max/Min rating change allowed	164.7	163.9	165.8	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	1204.6	1208.1	1199.9	1200
New weighted rating	1205.3	1209.1	1199.9	1200
New weighted performance	1074.1	1081.9	0	0
Temp new rating	1205.3	1209.1	1199.9	1200
Temp new rating +/-	0.1	0.2	0	0
Final new rating +/-	0.1	0.2	0	0
New rating	1205.3	1209.1	1199.9	1200
New K-factor	36	36	36	36
New floor	726.6	747.1	700	700

Item	Main	Standard	Rapid
	0	0	0
	34	28	6
	23	23	0
	0	0	0
	0	0	0
	0	0	0
History	57	51	6

Games since
	Main 57	Standard 51		Rapid 6		Blitz 0
Gender	Male
Age group	U12
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	3999		542		172
Male	3013		429		134
U12	671		74		28
U12 Male	460		54		19
Standard
	RSA		Province		Region
Overall	3854		542		180
Male	2908		431		138
U12	620		74		26
U12 Male	425		54		17
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	34	15	44.12	-50	1235.1	1185.1
Standard	28	12.5	44.64	-45.5	1238.3	1192.8
Rapid	6	2.5	41.67	-70.8	1219.8	1149
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	57	28.5	50	0	1221.1	1221.1
Standard	51	26	50.98	8.3	1221.2	1229.5
Rapid	6	2.5	41.67	-70.8	1219.8	1149
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1204.6	1208.1	1199.9	1200
2025-09-01	1204.6	1208.1	1199.9	1200
2025-08-01	1204.6	1208.1	1199.9	1200
2025-07-01	1202.9	1205.8	1199.9	1200
2025-06-01	1226.6	1237.1	1199.9	1200
2025-05-01	1226.6	1237.1	1199.9	1200
2025-04-01	1223.9	1247.1	1199.8	1200
2025-03-01	1197.6	1205	1198.7	1200
2025-02-01	1198.4	1197.6	1200	1200
2025-01-01	1197.3	1196	1200	1200
2024-12-01	1197.3	1196	1200	1200
2024-11-01	1197.3	1196	1200	1200
2024-10-01	1197.3	1196	1200	1200
2024-09-01	1197.3	1196	1200	1200
2024-08-01	1197.3	1196	1200	1200
2024-07-01	1197.3	1196	1200	1200
2024-06-01	1197.3	1196	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	2nd Vikings Classical 2025 (C)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	1	Yes	Analysis
2	2025 Buffalo City Chess Trials 2 (U12)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
3	2025 Buffalo City Chess Trials 1 (U12)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	2.5	Yes	Analysis
4	Vikings Classical March 2025 (U12)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
5	Hudson League 1 2025	2025-02-10	2025-02-13	Standard	Buffalo City (EBC)	6	4	2	Yes	Analysis
6	Rapid Feb 2nd Leg 2025 (U12)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	6	2.5	Yes	Analysis
7	Hudson League 1 2023	2025-02-10	2025-02-13	Standard	Buffalo City (EBC)	6	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2nd Vikings Classical 2025 (C)	2025-05-24	2025-05-24	Standard	Buffalo City (EBC)	5	5	1	Yes	Analysis
2	2025 Buffalo City Chess Trials 2 (U12)	2025-04-12	2025-04-12	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
3	2025 Buffalo City Chess Trials 1 (U12)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	5	2.5	Yes	Analysis
4	Vikings Classical March 2025 (U12)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
5	Hudson League 1 2025	2025-02-10	2025-02-13	Standard	Buffalo City (EBC)	6	4	2	Yes	Analysis
6	Rapid Feb 2nd Leg 2025 (U12)	2025-02-22	2025-02-22	Rapid	Buffalo City (EBC)	7	6	2.5	Yes	Analysis
7	Hudson League 1 2023	2025-02-10	2025-02-13	Standard	Buffalo City (EBC)	6	4	2	Yes	Analysis
8	EL Junior Closed 2024 (U12)	2024-11-23	2024-11-23	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
9	3rd Hudson Tournament 2024 (B)	2024-11-11	2024-11-14	Standard	Buffalo City (EBC)	6	6	3.5	Yes	Analysis
10	East London Open 2024 (C)	2024-11-05	2024-11-05	Standard	Buffalo City (EBC)	6	4	1.5	Yes	Analysis
11	4th BC Trials 2024 (U12B)	2024-06-08	2024-06-08	Standard	Buffalo City (EBC)	5	4	3.5	Yes	Analysis
12	3rd BC Trials 2024 (U10B)	2024-05-11	2024-05-11	Standard	Buffalo City (EBC)	5	4	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2025 Buffalo City Chess Trials 1				Tournament 2025 Buffalo City Chess Trials 2
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Sixhaso, K (Khayone)				Opponent Matabata, O (Othawe)
2	4	Tournament 4th BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-06-08	rnd 1	type Standard	result 0.5	date 2024-06-08	rnd 5	type Standard	result 1
		Opponent Tayi, M (Milani)				Opponent Rani, L (Lukhanyo)
3	3	Tournament Hudson League 1 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-13	rnd 5	type Standard	result 1	date 2025-02-22	rnd 2	type Rapid	result 0.5
		Opponent Simms, R (Rw)				Opponent Gonya, M (Mvuni)

#	Games	Start				End
1	5	Tournament 2025 Buffalo City Chess Trials 1				Tournament 2025 Buffalo City Chess Trials 2
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Sixhaso, K (Khayone)				Opponent Matabata, O (Othawe)
2	4	Tournament Hudson League 1 2025				Tournament Vikings Classical March 2025
		date 2025-02-13	rnd 5	type Standard	result 1	date 2025-03-15	rnd 2	type Standard	result 1
		Opponent Simms, R (Rw)				Opponent Ndlume, Z (Zusange)
3	4	Tournament 4th BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-06-08	rnd 1	type Standard	result 0.5	date 2024-06-08	rnd 5	type Standard	result 1
		Opponent Tayi, M (Milani)				Opponent Rani, L (Lukhanyo)

#	Games	Start				End
1	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Malik, A (Ateeb)				Opponent Malik, A (Ateeb)
2	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Somdaka, O (Othalive)				Opponent Somdaka, O (Othalive)
3	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 2	type Rapid	result 0.5	date 2025-02-22	rnd 2	type Rapid	result 0.5
		Opponent Gonya, M (Mvuni)				Opponent Gonya, M (Mvuni)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament EL Junior Closed 2024				Tournament EL Junior Closed 2024
		date 2024-11-23	rnd 3	type Standard	result 1	date 2024-11-23	rnd 5	type Standard	result 1
		Opponent Bloem, L (Lenorah)				Opponent Mashiyi, M (Moyomhle)
2	3	Tournament 4th BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-06-08	rnd 3	type Standard	result 1	date 2024-06-08	rnd 5	type Standard	result 1
		Opponent Nkohla, A (Athayanda)				Opponent Rani, L (Lukhanyo)
3	2	Tournament 2025 Buffalo City Chess Trials 2				Tournament 2025 Buffalo City Chess Trials 2
		date 2025-04-12	rnd 1	type Standard	result 1	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Bokolo, A (Awande)				Opponent Matabata, O (Othawe)

#	Games	Start				End
1	4	Tournament Hudson League 1 2025				Tournament Vikings Classical March 2025
		date 2025-02-13	rnd 5	type Standard	result 1	date 2025-03-15	rnd 2	type Standard	result 1
		Opponent Simms, R (Rw)				Opponent Ndlume, Z (Zusange)
2	3	Tournament EL Junior Closed 2024				Tournament EL Junior Closed 2024
		date 2024-11-23	rnd 3	type Standard	result 1	date 2024-11-23	rnd 5	type Standard	result 1
		Opponent Bloem, L (Lenorah)				Opponent Mashiyi, M (Moyomhle)
3	3	Tournament 4th BC Trials 2024				Tournament 4th BC Trials 2024
		date 2024-06-08	rnd 3	type Standard	result 1	date 2024-06-08	rnd 5	type Standard	result 1
		Opponent Nkohla, A (Athayanda)				Opponent Rani, L (Lukhanyo)

#	Games	Start				End
1	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Malik, A (Ateeb)				Opponent Malik, A (Ateeb)
2	1	Tournament Rapid Feb 2nd Leg 2025				Tournament Rapid Feb 2nd Leg 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Somdaka, O (Othalive)				Opponent Somdaka, O (Othalive)

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	Moyo ,M (Mihle)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
1	Moyo ,M (Mihle)	3	1185.3	901.9	3	1184.4	901.9	0	0	0	0	0	0
2	James ,K (Kyle)	3	0	-425	2	0	-425	1	0	-425	0	0	0
2	James ,K (Kyle)	3	1206.7	781.7	2	1174.8	781.7	1	1188.6	781.7	0	0	0
3	Marais ,D (Damon)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Marais ,D (Damon)	2	1226	801	2	1223.2	801	0	0	0	0	0	0
4	Simms ,R (Rw)	2	2	425	2	2	425	0	0	0	0	0	0
4	Simms ,R (Rw)	2	1200	1625	2	1200	1625	0	0	0	0	0	0
5	Kwelani ,L (Luthando)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Kwelani ,L (Luthando)	2	1386.4	961.4	2	1396.4	961.4	0	0	0	0	0	0
6	Lin ,Y (Yifan)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Lin ,Y (Yifan)	2	1364.4	939.4	2	1334.5	939.4	0	0	0	0	0	0
7	Matabata ,O (Othawe)	2	2	425	2	2	425	0	0	0	0	0	0
7	Matabata ,O (Othawe)	2	1170.6	1595.6	2	1181.6	1595.6	0	0	0	0	0	0
8	Gertze ,L (Liam-James)	2	2	425	2	2	425	0	0	0	0	0	0
8	Gertze ,L (Liam-James)	2	1192	1617	2	1190	1617	0	0	0	0	0	0
9	Matyila ,S (Sisonge-Sisonke)	2	1	0	2	1	0	0	0	0	0	0	0
9	Matyila ,S (Sisonge-Sisonke)	2	1138.8	1138.8	2	1116.4	1138.8	0	0	0	0	0	0
10	Gonya ,M (Mvuni)	2	1	0	1	0.5	0	1	0.5	0	0	0	0
10	Gonya ,M (Mvuni)	2	1278.7	1278.7	1	1267.3	1278.7	1	1264.5	1278.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Zhen, YJ (Ying Jun)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms