Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zhang, Z (Ziyi)

Chess SA id

1140161348

FIDE id

Date of birth

2014-02-01 (U12)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1234	1223.3	1216.6	1200
Raw rating	1234	1223.3	1216.6	1200
Weighted rating	1232.3	1222.6	1212.9	1200
Weighted performance	0	0	0	0
Floor	749.9	757.3	716.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	158	160.4	161.9	165.8
Highest rating	1342.4 2023-08-01	1341 2023-08-01	1261.3 2024-11-01	1200 2018-10-01
Highest raw rating	1249.9 2024-09-01	1257.3 2024-09-01	1216.6 2024-11-01	1200 2024-03-01
Highest weighted rating	1231.2 2025-08-01	1257.3 2024-09-01	1210.8 2025-08-01	1200 2018-10-01
Highest weighted performance	1342.4 2023-08-01	1341 2023-08-01	1261.3 2024-11-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1234	1223.3	1216.6	1200
Analysis
Rating	1234	1223.3	1216.6	1200
Raw rating	1234	1223.3	1216.6	1200
Weighted rating	1232.3	1222.6	1212.9
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	749.9	757.3	716.6	700
Max/Min rating change allowed	158	160.4	161.9	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	1234	1223.3	1216.6	1200
New weighted rating	1232.6	1222.5	1213.6	1200
New weighted performance	0	0	0	0
Temp new rating	1234	1223.3	1216.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1234	1223.3	1216.6	1200
New K-factor	36	36	36	36
New floor	749.9	757.3	716.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	16	10	6
	5	5	0
	0	0	0
	0	0	0
History	21	15	6

Games since
	Main 16	Standard 10		Rapid 6		Blitz 0
Gender	Male
Age group	U12
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	21	10.5	50	0	1286	1286
Standard	15	7	46.67	-28.3	1278.2	1249.9
Rapid	6	3.5	58.33	70.8	1305.4	1376.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1234	1223.3	1216.6	1200
2025-09-30	1234	1223.3	1216.6	1200
2025-09-01	1234	1223.3	1216.6	1200
2025-08-01	1234	1223.3	1216.6	1200
2025-07-01	1234	1223.3	1216.6	1200
2025-06-01	1234	1223.3	1216.6	1200
2025-05-01	1234	1223.3	1216.6	1200
2025-04-01	1234	1223.2	1216.6	1200
2025-03-01	1234	1223	1216.6	1200
2025-02-01	1234	1221.7	1216.6	1200
2025-01-01	1234	1206.9	1216.6	1200
2024-12-01	1234	1206.9	1216.6	1200
2024-11-01	1234	1206.9	1216.6	1200
2024-10-01	1211.4	1206.9	1200	1200
2024-09-01	1249.9	1257.3	1200	1200
2024-08-01	1224.8	1229.9	1200	1200
2024-07-01	1224.8	1229.9	1200	1200
2024-09-01	1224.8	1229.9	1200	1200
2024-05-01	1224.8	1229.9	1200	1200
2024-04-01	1224.8	1229.9	1200	1200
2024-03-01	1224.8	1229.9	1200	1200
2024-02-01	1224.8	1229.9	1200	1200
2024-01-01	1224.8	1229.9	1200	1200
2023-12-01	1224.8	1229.9	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Mzansi Summer Rapid 2024 (U8+U10)	2024-10-26	2024-10-26	Rapid	Johannesburg Metro (GJM)	6	6	3.5	Yes	Analysis
2	Mzansi Spring Open 2024 (Juniors)	2024-09-07	2024-09-07	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
3	Fourth Knight Riders Juniors Open Chess Tournament 204 (D)	2024-08-03	2024-08-03	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
4	2023 Gauteng Top Schools (U9 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2023 Gauteng Top Schools				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2023-08-18	rnd 4	type Standard	result 1	date 2024-08-03	rnd 1	type Standard	result 1
		Opponent Esterhuizen, R (Ruben)				Opponent Chauke, N (Nokukhanya)
2	2	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2024-10-26	rnd 6	type Rapid	result 1
		Opponent Ninham, G (Grant)				Opponent Tierney, C (Cameron)
3	2	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 2	type Rapid	result 0.5	date 2024-10-26	rnd 3	type Rapid	result 1
		Opponent Scully, E (Ernest)				Opponent Naidoo, K (Kehan)

#	Games	Start				End
1	3	Tournament 2023 Gauteng Top Schools				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2023-08-18	rnd 4	type Standard	result 1	date 2024-08-03	rnd 1	type Standard	result 1
		Opponent Esterhuizen, R (Ruben)				Opponent Chauke, N (Nokukhanya)
2	2	Tournament Fourth Knight Riders Juniors Open Chess Tournament 204				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2024-08-03	rnd 3	type Standard	result 0.5	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Steyn, K (Kahn)				Opponent Mnguni, A (Aphile)
3	1	Tournament Mzansi Spring Open 2024				Tournament Mzansi Spring Open 2024
		date 2024-09-07	rnd 5	type Standard	result 0.5	date 2024-09-07	rnd 5	type Standard	result 0.5
		Opponent Baker, M (Matthew Errol)				Opponent Baker, M (Matthew Errol)

#	Games	Start				End
1	2	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2024-10-26	rnd 6	type Rapid	result 1
		Opponent Ninham, G (Grant)				Opponent Tierney, C (Cameron)
2	2	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 2	type Rapid	result 0.5	date 2024-10-26	rnd 3	type Rapid	result 1
		Opponent Scully, E (Ernest)				Opponent Naidoo, K (Kehan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2023 Gauteng Top Schools				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2023-08-18	rnd 4	type Standard	result 1	date 2024-08-03	rnd 1	type Standard	result 1
		Opponent Esterhuizen, R (Ruben)				Opponent Chauke, N (Nokukhanya)
2	2	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2024-10-26	rnd 6	type Rapid	result 1
		Opponent Ninham, G (Grant)				Opponent Tierney, C (Cameron)
3	1	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 3	type Rapid	result 1	date 2024-10-26	rnd 3	type Rapid	result 1
		Opponent Naidoo, K (Kehan)				Opponent Naidoo, K (Kehan)

#	Games	Start				End
1	3	Tournament 2023 Gauteng Top Schools				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2023-08-18	rnd 4	type Standard	result 1	date 2024-08-03	rnd 1	type Standard	result 1
		Opponent Esterhuizen, R (Ruben)				Opponent Chauke, N (Nokukhanya)
2	1	Tournament Mzansi Spring Open 2024				Tournament Mzansi Spring Open 2024
		date 2024-09-07	rnd 1	type Standard	result 1	date 2024-09-07	rnd 1	type Standard	result 1
		Opponent Shylesh, S (Sathish)				Opponent Shylesh, S (Sathish)
3	1	Tournament Fourth Knight Riders Juniors Open Chess Tournament 204				Tournament Fourth Knight Riders Juniors Open Chess Tournament 204
		date 2024-08-03	rnd 4	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Mnguni, A (Aphile)				Opponent Mnguni, A (Aphile)

#	Games	Start				End
1	2	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2024-10-26	rnd 6	type Rapid	result 1
		Opponent Ninham, G (Grant)				Opponent Tierney, C (Cameron)
2	1	Tournament Mzansi Summer Rapid 2024				Tournament Mzansi Summer Rapid 2024
		date 2024-10-26	rnd 3	type Rapid	result 1	date 2024-10-26	rnd 3	type Rapid	result 1
		Opponent Naidoo, K (Kehan)				Opponent Naidoo, K (Kehan)

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	Steyn ,K (Kahn)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
1	Steyn ,K (Kahn)	1	1447	1447	1	1439.4	1447	0	0	0	0	0	0
2	Kuhlase ,P (Prince)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Kuhlase ,P (Prince)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Khumalo ,S (Sihle)	1	1	425	1	1	425	0	0	0	0	0	0
3	Khumalo ,S (Sihle)	1	1215.3	1640.3	1	1218	1640.3	0	0	0	0	0	0
4	De Louw ,M (Micah)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	De Louw ,M (Micah)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Steyn ,K (Kian)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Steyn ,K (Kian)	1	1575.3	1150.3	1	1558.4	1150.3	0	0	0	0	0	0
6	Goncalves ,E (Emilio)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Goncalves ,E (Emilio)	1	1656.2	1231.2	1	1642.4	1231.2	0	0	0	0	0	0
7	Smith ,W (William)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Smith ,W (William)	1	1190.8	765.8	1	1184.5	765.8	0	0	0	0	0	0
8	Baker ,M (Matthew Errol)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Baker ,M (Matthew Errol)	1	1208.3	1208.3	1	1194.5	1208.3	0	0	0	0	0	0
9	Esterhuizen ,R (Ruben)	1	1	425	1	1	425	0	0	0	0	0	0
9	Esterhuizen ,R (Ruben)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Voogt ,A (Arno)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Voogt ,A (Arno)	1	1191.9	766.9	1	1191.4	766.9	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

Zhang, Z (Ziyi)

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