Chess South Africa Ratings Database

PLAYER PAGE

Personal

Arthur, Z (Zachary)

Chess SA id

1140156646

FIDE id

Date of birth

2014-09-02 (U12)

Gender

Male

Region

Chess South Africa (CSA)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-27

Personal details last changed

1900-01-01

Junior GPX Games

38.4

Junior GPX Points

1131.7

Item	Main	Standard	Rapid	Blitz
Rating	1311.7	1290.2	1271.3	1200
Raw rating	1311.7	1290.2	1271.3	1200
Weighted rating	1256.5	1235.5	1242.7	1200
Weighted performance	1284.2	1263	1197.5	0
Floor	811.7	790.2	776.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	141.4	145.8	149.8	165.8
Highest rating	1311.7 2025-08-01	1290.2 2025-08-01	1289.6 2023-05-01	1200 2018-10-01
Highest raw rating	1311.7 2025-08-01	1290.2 2025-08-01	1276.8 2025-02-01	1200 2024-02-01
Highest weighted rating	1242.8 2025-08-01	1223.4 2025-08-01	1234 2025-08-01	1200 2018-10-01
Highest weighted performance	1311.7 2025-08-01	1290.2 2024-02-01	1289.6 2023-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1311.7	1290.2	1271.3	1200
Analysis
Rating	1311.7	1290.2	1271.3	1200
Raw rating	1311.7	1290.2	1271.3	1200
Weighted rating	1256.5	1235.5	1242.7
Weighted performance	1284.2	1263	1197.5
K-factor	36	36	36	36
Floor	811.7	790.2	776.8	700
Max/Min rating change allowed	141.4	145.8	149.8	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	1311.7	1290.2	1271.3	1200
New weighted rating	1262.7	1241.1	1246.7	1200
New weighted performance	1283.8	1262.6	1197.1	0
Temp new rating	1311.7	1290.2	1271.3	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1311.7	1290.2	1271.3	1200
New K-factor	36	36	36	36
New floor	811.7	790.2	776.8	700

Item	Main	Standard	Rapid
	0	0	0
	48	27	21
	36	0	36
	15	0	15
	0	0	0
	0	0	0
History	99	27	72

Games since
	Main 84	Standard 27		Rapid 57		Blitz 0
Gender	Male
Age group	U12
Region	Chess South Africa (CSA)
Province
Main
	RSA		Province		Region
Overall	3064		8		7
Male	2425		6		6
U12	462		1		1
U12 Male	330		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	1196		8		8
Male	967		7		7
U12	218		1		1
U12 Male	156		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	48	24.5	51.04	8.9	1301.9	1310.7
Standard	27	14	51.85	15.7	1310.9	1326.7
Rapid	21	10.5	50	0	1290.2	1290.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	99	50	50.51	4.3	1269	1273.3
Standard	27	14	51.85	15.7	1310.9	1326.7
Rapid	72	36	50	0	1253.3	1253.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1311.7	1290.2	1271.3	1200
2025-09-01	1311.7	1290.2	1271.3	1200
2025-08-01	1311.7	1290.2	1271.3	1200
2025-07-01	1289.5	1260.6	1271.3	1200
2025-06-01	1273.3	1252.1	1248.4	1200
2025-05-01	1273.3	1252.1	1248.4	1200
2025-04-01	1273.3	1252.1	1248.4	1200
2025-03-01	1249.6	1211.1	1248.4	1200
2025-02-01	1254.2	1200	1276.8	1200
2025-01-01	1238.8	1200	1251.8	1200
2024-12-01	1228.6	1200	1240.6	1200
2024-11-01	1228.6	1200	1240.6	1200
2024-10-01	1236.6	1200	1266.8	1200
2024-09-01	1236.6	1200	1266.8	1200
2024-08-01	1200.6	1200	1189.6	1200
2024-07-01	1166.6	1200	1132.7	1200
2024-06-01	1166.6	1200	1132.7	1200
2024-08-01	1194.2	1200	1179.5	1200
2024-04-01	1194.2	1200	1179.5	1200
2024-03-01	1194.2	1200	1179.5	1200
2024-02-01	1194.2	1200	1179.5	1200
2024-01-01	1194.2	1200	1179.5	1200
2023-12-01	1194.2	1200	1179.5	1200
2023-11-01	1194.2	1200	1179.5	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 ECA 2nd Youth Trials (U12)	2025-07-26	2025-07-27	Standard	Ethekwini (KED)	6	6	3.5	Yes	Analysis
2	Umhlali Chess Festival 2025 (Grade 4+5)	2025-06-21	2025-06-21	Rapid	iLembe (KIK)	5	5	2.5	Yes	Analysis
3	2025 Eyethu Chess Academy Individual Invitation (C)	2025-05-31	2025-05-31	Standard	Ethekwini (KED)	5	5	2.5	Yes	Analysis
4	2025 Eyethu Chess Academy Tournament (U12)	2025-03-15	2025-03-15	Standard	Ethekwini (KED)	5	5	3	Yes	Analysis
5	2025 ECA 1st Youth Trials (D)	2025-03-08	2025-03-09	Standard	Ethekwini (KED)	6	6	3	Yes	Analysis
6	2025 Westville Girls High School Rapid (U12)	2025-02-22	2025-02-22	Rapid	Ethekwini (KED)	6	6	3	Yes	Analysis
7	Westville Chess Club Rapid Rated February 2025	2025-02-08	2025-02-08	Rapid	Ethekwini (KED)	5	5	2	Yes	Analysis
8	Westville Chess Club Tournament 2025 (Senior Primay)	2025-02-01	2025-02-01	Standard	Ethekwini (KED)	5	5	2	Yes	Analysis
9	Westville Chess Club January Rapid 2025 (Senior Primary)	2025-01-25	2025-01-25	Rapid	Ethekwini (KED)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 ECA 2nd Youth Trials (U12)	2025-07-26	2025-07-27	Standard	Ethekwini (KED)	6	6	3.5	Yes	Analysis
2	Umhlali Chess Festival 2025 (Grade 4+5)	2025-06-21	2025-06-21	Rapid	iLembe (KIK)	5	5	2.5	Yes	Analysis
3	2025 Eyethu Chess Academy Individual Invitation (C)	2025-05-31	2025-05-31	Standard	Ethekwini (KED)	5	5	2.5	Yes	Analysis
4	2025 Eyethu Chess Academy Tournament (U12)	2025-03-15	2025-03-15	Standard	Ethekwini (KED)	5	5	3	Yes	Analysis
5	2025 ECA 1st Youth Trials (D)	2025-03-08	2025-03-09	Standard	Ethekwini (KED)	6	6	3	Yes	Analysis
6	2025 Westville Girls High School Rapid (U12)	2025-02-22	2025-02-22	Rapid	Ethekwini (KED)	6	6	3	Yes	Analysis
7	Westville Chess Club Rapid Rated February 2025	2025-02-08	2025-02-08	Rapid	Ethekwini (KED)	5	5	2	Yes	Analysis
8	Westville Chess Club Tournament 2025 (Senior Primay)	2025-02-01	2025-02-01	Standard	Ethekwini (KED)	5	5	2	Yes	Analysis
9	Westville Chess Club January Rapid 2025 (Senior Primary)	2025-01-25	2025-01-25	Rapid	Ethekwini (KED)	5	5	3	Yes	Analysis
10	2024 Eduvos Durban Book Fair Chess Tournament	2024-12-01	2024-12-01	Rapid	Ethekwini (KED)	6	6	3	Yes	Analysis
11	St James Rapid Rated Chess Tournament 2024 (Senior Primary)	2024-10-26	2024-10-26	Rapid	Ethekwini (KED)	6	6	3	Yes	Analysis
12	Ashton International College Chess Champs 2024 (Senior Primary)	2024-08-17	2024-08-17	Rapid	Ethekwini (KED)	5	5	4	Yes	Analysis
13	St James School Rapid Rated Chess Tournament 2024 (Senior Primary)	2024-07-20	2024-07-20	Rapid	Ethekwini (KED)	6	6	3.5	Yes	Analysis
14	Durban & Districts Chess Challenge 2024 (U12)	2024-06-08	2024-06-08	Rapid	Ethekwini (KED)	7	7	3	Yes	Analysis
15	Westville Chess Club Rapid Rated Tournament 2024 (Senior Primary)	2024-05-25	2024-05-25	Rapid	Ethekwini (KED)	6	6	2	Yes	Analysis
16	Chess Molecules Rapid 2023 (Grade 3+4)	2023-09-23	2023-09-23	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis
17	Chess Molecules 16 June Tournament 2023 (Grade 3+4)	2023-06-16	2023-06-16	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis
18	Umhlali Preparatory Rapid 2023 (Junior Primary)	2023-05-20	2023-05-20	Rapid	iLembe (KIK)	5	5	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament Ashton International College Chess Champs 2024				Tournament Ashton International College Chess Champs 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 5	type Rapid	result 1
		Opponent Coffin-Grey, K (Kayden)				Opponent Dawah, D (Dhyan)
2	4	Tournament Westville Chess Club Rapid Rated Tournament 2024				Tournament Durban & Districts Chess Challenge 2024
		date 2024-05-25	rnd 6	type Rapid	result 1	date 2024-06-08	rnd 3	type Rapid	result 1
		Opponent Naidoo, T (Tayundra)				Opponent Keating, R (Rourke)
3	3	Tournament 2025 Eyethu Chess Academy Individual Invitation				Tournament 2025 Eyethu Chess Academy Individual Invitation
		date 2025-05-31	rnd 1	type Standard	result 0.5	date 2025-05-31	rnd 3	type Standard	result 1
		Opponent Ndlovu, L (Lubanzi)				Opponent Maharaj, M (Mahi)

#	Games	Start				End
1	3	Tournament 2025 Eyethu Chess Academy Individual Invitation				Tournament 2025 Eyethu Chess Academy Individual Invitation
		date 2025-05-31	rnd 1	type Standard	result 0.5	date 2025-05-31	rnd 3	type Standard	result 1
		Opponent Ndlovu, L (Lubanzi)				Opponent Maharaj, M (Mahi)
2	3	Tournament 2025 ECA 1st Youth Trials				Tournament 2025 Eyethu Chess Academy Tournament
		date 2025-03-09	rnd 6	type Standard	result 1	date 2025-03-15	rnd 2	type Standard	result 1
		Opponent Cason, D (Daniel)				Opponent Zungu, M (Minenhle)
3	2	Tournament 2025 ECA 2nd Youth Trials				Tournament 2025 ECA 2nd Youth Trials
		date 2025-07-27	rnd 5	type Standard	result 1	date 2025-07-27	rnd 6	type Standard	result 0.5
		Opponent Cason, D (Daniel)				Opponent Varghese, S (Steven)

#	Games	Start				End
1	4	Tournament Ashton International College Chess Champs 2024				Tournament Ashton International College Chess Champs 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 5	type Rapid	result 1
		Opponent Coffin-Grey, K (Kayden)				Opponent Dawah, D (Dhyan)
2	4	Tournament Westville Chess Club Rapid Rated Tournament 2024				Tournament Durban & Districts Chess Challenge 2024
		date 2024-05-25	rnd 6	type Rapid	result 1	date 2024-06-08	rnd 3	type Rapid	result 1
		Opponent Naidoo, T (Tayundra)				Opponent Keating, R (Rourke)
3	3	Tournament St James School Rapid Rated Chess Tournament 2024				Tournament St James School Rapid Rated Chess Tournament 2024
		date 2024-07-20	rnd 1	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Wolde, F (Fesone)				Opponent Kamroodeen, Z (Zia)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Ashton International College Chess Champs 2024				Tournament Ashton International College Chess Champs 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 5	type Rapid	result 1
		Opponent Coffin-Grey, K (Kayden)				Opponent Dawah, D (Dhyan)
2	4	Tournament Westville Chess Club Rapid Rated Tournament 2024				Tournament Durban & Districts Chess Challenge 2024
		date 2024-05-25	rnd 6	type Rapid	result 1	date 2024-06-08	rnd 3	type Rapid	result 1
		Opponent Naidoo, T (Tayundra)				Opponent Keating, R (Rourke)
3	3	Tournament 2025 ECA 1st Youth Trials				Tournament 2025 Eyethu Chess Academy Tournament
		date 2025-03-09	rnd 6	type Standard	result 1	date 2025-03-15	rnd 2	type Standard	result 1
		Opponent Cason, D (Daniel)				Opponent Zungu, M (Minenhle)

#	Games	Start				End
1	3	Tournament 2025 ECA 1st Youth Trials				Tournament 2025 Eyethu Chess Academy Tournament
		date 2025-03-09	rnd 6	type Standard	result 1	date 2025-03-15	rnd 2	type Standard	result 1
		Opponent Cason, D (Daniel)				Opponent Zungu, M (Minenhle)
2	2	Tournament 2025 Eyethu Chess Academy Individual Invitation				Tournament 2025 Eyethu Chess Academy Individual Invitation
		date 2025-05-31	rnd 2	type Standard	result 1	date 2025-05-31	rnd 3	type Standard	result 1
		Opponent Nzama, N (Nqobile)				Opponent Maharaj, M (Mahi)
3	1	Tournament 2025 ECA 2nd Youth Trials				Tournament 2025 ECA 2nd Youth Trials
		date 2025-07-27	rnd 5	type Standard	result 1	date 2025-07-27	rnd 5	type Standard	result 1
		Opponent Cason, D (Daniel)				Opponent Cason, D (Daniel)

#	Games	Start				End
1	4	Tournament Ashton International College Chess Champs 2024				Tournament Ashton International College Chess Champs 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 5	type Rapid	result 1
		Opponent Coffin-Grey, K (Kayden)				Opponent Dawah, D (Dhyan)
2	4	Tournament Westville Chess Club Rapid Rated Tournament 2024				Tournament Durban & Districts Chess Challenge 2024
		date 2024-05-25	rnd 6	type Rapid	result 1	date 2024-06-08	rnd 3	type Rapid	result 1
		Opponent Naidoo, T (Tayundra)				Opponent Keating, R (Rourke)
3	2	Tournament 2025 Westville Girls High School Rapid				Tournament 2025 Westville Girls High School Rapid
		date 2025-02-22	rnd 2	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Slabbert, L (Lilly)				Opponent Parshotam, K (Kira)

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	Nadesan ,M (Mikhail)	4	1.5	-106.2	1	0	-425	3	1.5	0	0	0	0
1	Nadesan ,M (Mikhail)	4	1332.9	1226.7	1	1381.5	907.9	3	1294.8	1332.9	0	0	0
2	Parshotam ,K (Kira)	3	3	425	0	0	0	3	3	425	0	0	0
2	Parshotam ,K (Kira)	3	1167.6	1592.6	0	0	0	3	1157.9	1592.6	0	0	0
3	Masiteng ,N (Nkosikhona)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Masiteng ,N (Nkosikhona)	2	1492.6	1067.6	2	1440.6	1067.6	0	0	0	0	0	0
4	Ellender ,A (Asher)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Ellender ,A (Asher)	2	1505.6	1080.6	2	1484.5	1080.6	0	0	0	0	0	0
5	Cason ,D (Daniel)	2	2	425	2	2	425	0	0	0	0	0	0
5	Cason ,D (Daniel)	2	1120.3	1545.3	2	1088.9	1545.3	0	0	0	0	0	0
6	Ramlachan ,K (Kairav)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Ramlachan ,K (Kairav)	2	1485.6	1060.6	2	1477.3	1060.6	0	0	0	0	0	0
7	Zungu ,M (Minenhle)	2	2	425	1	1	425	1	1	425	0	0	0
7	Zungu ,M (Minenhle)	2	1198.1	1623.1	1	1200	1623.1	1	1200	1623.1	0	0	0
8	Gurayah ,K (Kairav)	2	0	-425	0	0	0	2	0	-425	0	0	0
8	Gurayah ,K (Kairav)	2	1438.7	1013.7	0	0	0	2	1273.7	1013.7	0	0	0
9	Tsouris ,E (Ezra)	2	1	0	0	0	0	2	1	0	0	0	0
9	Tsouris ,E (Ezra)	2	1155.6	1155.6	0	0	0	2	1226.1	1155.6	0	0	0
10	Wolde ,F (Fesone)	2	2	425	0	0	0	2	2	425	0	0	0
10	Wolde ,F (Fesone)	2	1166.8	1591.8	0	0	0	2	1132.9	1591.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Arthur, Z (Zachary)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms