Chess South Africa Ratings Database

PLAYER PAGE

Personal

Da Costa, E (Ethan)

Chess SA id

1120306437

FIDE id

Date of birth

2012-02-17 (U14)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1304.7

Item	Main	Standard	Rapid	Blitz
Rating	1271.8	1259.7	1200	1200
Raw rating	1271.8	1259.7	1200	1200
Weighted rating	1254.4	1247.5	1200	1200
Weighted performance	1202.6	1202.6	0	0
Floor	831.2	825.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	149.7	152.3	165.8	165.8
Highest rating	1331.2 2025-04-01	1325.3 2025-04-01	1200 2024-12-01	1200 2024-12-01
Highest raw rating	1331.2 2025-04-01	1325.3 2025-04-01	1200 2024-12-01	1200 2024-12-01
Highest weighted rating	1331.2 2024-12-01	1325.3 2024-12-01	1200 2024-12-01	1200 2024-12-01
Highest weighted performance	1331.2 2025-04-01	1325.3 2024-11-01	1200 2024-12-01	1200 2024-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1271.8	1259.7	1200	1200
Analysis
Rating	1271.8	1259.7	1200	1200
Raw rating	1271.8	1259.7	1200	1200
Weighted rating	1254.4	1247.5	1200
Weighted performance	1202.6	1202.6	0
K-factor	36	36	36	36
Floor	831.2	825.3	700	700
Max/Min rating change allowed	149.7	152.3	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	1271.8	1259.7	1200	1200
New weighted rating	1257.6	1250.2	1200	1200
New weighted performance	1202.2	1202.2	0	0
Temp new rating	1271.8	1259.7	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1271.8	1259.7	1200	1200
New K-factor	36	36	36	36
New floor	831.2	825.3	700	700

Item	Main	Standard
	0	0
	32	32
	41	41
	0	0
	0	0
	0	0
History	73	73

Games since
	Main 73	Standard 73		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3428		1129		398
Male	2668		882		306
U14	644		205		69
U14 Male	469		152		51
Standard
	RSA		Province		Region
Overall	3426		1213		467
Male	2643		945		362
U14	656		222		79
U14 Male	470		163		58
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	32	14	43.75	-53.1	1348.8	1295.7
Standard	32	14	43.75	-53.1	1348.8	1295.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	73	33.5	45.89	-34.9	1266.9	1231.9
Standard	73	33.5	45.89	-34.9	1266.9	1231.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1271.8	1259.7	1200	1200
2025-09-01	1319.3	1314.4	1200	1200
2025-08-01	1306.8	1297.7	1200	1200
2025-07-01	1291	1276.7	1200	1200
2025-06-01	1291	1276.7	1200	1200
2025-05-01	1331.2	1325.3	1200	1200
2025-04-01	1331.2	1325.3	1200	1200
2025-03-01	1288.5	1283.7	1200	1200
2025-02-01	1288.5	1283.7	1200	1200
2025-01-01	1222.6	1217.6	1200	1200
2024-12-01	1215.1	1212.6	1200	1200
2024-11-01	1129.9	1122.4	1200	1200
2024-10-01	1129.9	1122.4	1200	1200
2024-09-01	1186.7	1182.4	1200	1200
2024-08-01	1133.6	1117.2	1200	1200
2024-07-01	1200	1200	1200	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	2025 Centurion Chess Open Tournament (C)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U14)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
3	2025 Menlo Open (U14)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Silver Lakes Chess Club Open Chess Tournament (C)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
5	Lubowski Open 2025 (D1)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
6	2025 Tshwane Chess OPEN Registration Tournament (B1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Centurion Chess Open Tournament (C)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U14)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
3	2025 Menlo Open (U14)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Silver Lakes Chess Club Open Chess Tournament (C)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
5	Lubowski Open 2025 (D1)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
6	2025 Tshwane Chess OPEN Registration Tournament (B1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
7	Gauteng Inter-Region at UJ 2024 (U16 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
8	Lardies Ope 2024 (C)	2024-10-26	2024-10-26	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
9	Centurion Chess Open Tournament 2024 (C)	2024-09-21	2024-09-21	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
10	2024 Etienne Lewis (U14)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
11	2024 Jacaranda Round Robin Open Chess Tournament (N)	2024-08-17	2024-08-17	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
12	2024 Midstream College Open Chess Tournament (B2)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
13	Menlopark Open Chess Tournament 2024 (C)	2024-07-13	2024-07-13	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
14	2024 Prestige College Open Chess Tournament (D)	2024-07-06	2024-07-06	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament Lubowski Open 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-03-21	rnd 2	type Standard	result 1
		Opponent Smith, L (Leah)				Opponent Kgwale, O (Obotegile)
2	4	Tournament Lardies Ope 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-10-26	rnd 3	type Standard	result 1	date 2024-12-07	rnd 1	type Standard	result 0.5
		Opponent Njotini, N (Noxolo)				Opponent Akker, D (Dylan)
3	4	Tournament Centurion Chess Open Tournament 2024				Tournament Lardies Ope 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-10-26	rnd 1	type Standard	result 1
		Opponent Labuscagne, W (Waldo)				Opponent Sehoka, L (Lesedi)

#	Games	Start				End
1	5	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament Lubowski Open 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-03-21	rnd 2	type Standard	result 1
		Opponent Smith, L (Leah)				Opponent Kgwale, O (Obotegile)
2	4	Tournament Lardies Ope 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-10-26	rnd 3	type Standard	result 1	date 2024-12-07	rnd 1	type Standard	result 0.5
		Opponent Njotini, N (Noxolo)				Opponent Akker, D (Dylan)
3	4	Tournament Centurion Chess Open Tournament 2024				Tournament Lardies Ope 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-10-26	rnd 1	type Standard	result 1
		Opponent Labuscagne, W (Waldo)				Opponent Sehoka, L (Lesedi)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament Lubowski Open 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-03-21	rnd 2	type Standard	result 1
		Opponent Smith, L (Leah)				Opponent Kgwale, O (Obotegile)
2	4	Tournament 2024 Jacaranda Round Robin Open Chess Tournament				Tournament 2024 Jacaranda Round Robin Open Chess Tournament
		date 2024-08-17	rnd 2	type Standard	result 1	date 2024-08-17	rnd 5	type Standard	result 1
		Opponent Nkosi, N (Nsika)				Opponent Udeagha, C (Chinonso)
3	3	Tournament Lardies Ope 2024				Tournament Lardies Ope 2024
		date 2024-10-26	rnd 3	type Standard	result 1	date 2024-10-26	rnd 5	type Standard	result 1
		Opponent Njotini, N (Noxolo)				Opponent Thobela, S (Sibusiso)

#	Games	Start				End
1	5	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament Lubowski Open 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-03-21	rnd 2	type Standard	result 1
		Opponent Smith, L (Leah)				Opponent Kgwale, O (Obotegile)
2	4	Tournament 2024 Jacaranda Round Robin Open Chess Tournament				Tournament 2024 Jacaranda Round Robin Open Chess Tournament
		date 2024-08-17	rnd 2	type Standard	result 1	date 2024-08-17	rnd 5	type Standard	result 1
		Opponent Nkosi, N (Nsika)				Opponent Udeagha, C (Chinonso)
3	3	Tournament Lardies Ope 2024				Tournament Lardies Ope 2024
		date 2024-10-26	rnd 3	type Standard	result 1	date 2024-10-26	rnd 5	type Standard	result 1
		Opponent Njotini, N (Noxolo)				Opponent Thobela, S (Sibusiso)

No games found.

#	Games	Start				End

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	Du Toit ,J (Janri)	2	1	0	2	1	0	0	0	0	0	0	0
1	Du Toit ,J (Janri)	2	1138.4	1138.4	2	1152.8	1138.4	0	0	0	0	0	0
2	Jacobs ,H (Hanno)	2	1	0	2	1	0	0	0	0	0	0	0
2	Jacobs ,H (Hanno)	2	1333.2	1333.2	2	1326	1333.2	0	0	0	0	0	0
3	Labuscagne ,W (Waldo)	2	2	425	2	2	425	0	0	0	0	0	0
3	Labuscagne ,W (Waldo)	2	1058.8	1483.8	2	1045.3	1483.8	0	0	0	0	0	0
4	Maree ,M (Morgan)	2	1	0	2	1	0	0	0	0	0	0	0
4	Maree ,M (Morgan)	2	1258.4	1258.4	2	1256.3	1258.4	0	0	0	0	0	0
5	Badenhorst ,M (Michael)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Badenhorst ,M (Michael)	1	1368	1368	1	1364.8	1368	0	0	0	0	0	0
6	Haupt ,J (Joshua)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Haupt ,J (Joshua)	1	1453.1	1453.1	1	1459.8	1453.1	0	0	0	0	0	0
7	Monnagaratoe ,M (Moatlhodi)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Monnagaratoe ,M (Moatlhodi)	1	1194.4	769.4	1	1186.5	769.4	0	0	0	0	0	0
8	Moultrey ,A (Antonio Chrispian)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Moultrey ,A (Antonio Chrispian)	1	1284.4	1284.4	1	1289.4	1284.4	0	0	0	0	0	0
9	Groom ,A (Angelo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Groom ,A (Angelo)	1	1128.9	1128.9	1	1123.3	1128.9	0	0	0	0	0	0
10	Nzuza ,M (Mduduzi)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nzuza ,M (Mduduzi)	1	1269.3	844.3	1	1287.7	844.3	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

Da Costa, E (Ethan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms