Chess South Africa Ratings Database

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Personal

Coetzee, S (Samual)

Chess SA id

1110151211

FIDE id

14370140

Date of birth

2011-03-30 (U16)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1512.8	1502.4	1200	1200
Raw rating	1494.5	1482.6	1200	1200
Weighted rating	1512.8	1502.4	1200	1200
Weighted performance	1456.8	1450.9	0	0
Floor	1131.6	1131.8	700	700
K-factor	28	28	36	36
Min/Max rating change allowed	109	110.9	165.8	165.8
Highest rating	1631.6 2025-04-01	1631.8 2025-05-05	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1631.6 2025-04-01	1631.8 2025-05-05	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1512.8 2026-01-01	1502.4 2026-01-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1631.6 2025-04-01	1631.7 2024-04-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.7	0.3	0	0
New rating	1513.5	1502.7	1200	1200
Analysis
Rating	1512.8	1502.4	1200	1200
Raw rating	1494.5	1482.6	1200	1200
Weighted rating	1512.8	1502.4	1200
Weighted performance	1456.8	1450.9	0
K-factor	28	28	36	36
Floor	1131.6	1131.8	700	700
Max/Min rating change allowed	109	110.9	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	1494.5	1482.6	1200	1200
New weighted rating	1513.5	1502.7	1200	1200
New weighted performance	1446.9	1441.1	0	0
Temp new rating	1513.5	1502.7	1200	1200
Temp new rating +/-	0.7	0.3	0	0
Final new rating +/-	0.7	0.3	0	0
New rating	1513.5	1502.7	1200	1200
New K-factor	28	28	36	36
New floor	1131.6	1131.8	700	700

Item	Main	Standard
	0	0
	56	56
	57	57
	29	29
	0	0
	0	0
History	142	142

Games since
	Main 113	Standard 113		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	1058		118		42
Male	921		104		37
U16	130		20		13
U16 Male	108		17		12
Standard
	RSA		Province		Region
Overall	1130		133		48
Male	970		117		42
U16	139		21		14
U16 Male	114		17		12
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	56	35	62.5	106.2	1439.3	1545.6
Standard	56	35	62.5	106.2	1439.3	1545.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	142	85	59.86	83.8	1361.5	1445.3
Standard	142	85	59.86	83.8	1361.5	1445.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1494.5	1482.6	1200	1200
2025-11-30	1527.8	1511.1	1200	1200
2025-11-01	1527.8	1511.1	1200	1200
2025-09-30	1527.8	1511.1	1200	1200
2025-09-01	1515.1	1499.9	1200	1200
2025-08-01	1515.1	1499.9	1200	1200
2025-07-01	1534.8	1517.4	1200	1200
2025-06-01	1562.1	1548.1	1200	1200
2025-05-01	1631.5	1631.8	1200	1200
2025-04-01	1631.6	1631.7	1200	1200
2025-03-01	1603.6	1600.5	1200	1200
2025-02-01	1443.9	1438.2	1200	1200
2025-01-01	1443.9	1438.2	1200	1200
2024-12-01	1415.4	1405.6	1200	1200
2024-11-01	1415.4	1405.6	1200	1200
2024-10-01	1415.4	1405.6	1200	1200
2024-09-01	1411	1397.6	1200	1200
2024-11-01	1418.2	1403.4	1200	1200
2024-07-01	1507.3	1510	1200	1200
2024-06-01	1507.3	1510	1200	1200
2024-05-01	1524	1529.2	1200	1200
2024-04-01	1502.2	1508.9	1200	1200
2024-03-01	1300.6	1308.5	1200	1200
2024-02-01	1286.9	1295.2	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	2025 Mzansi Individual Championships (U16 Open)	2025-12-17	2025-12-20	Standard	Nelson Mandela Bay (ENM)	6	4	1	Yes	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U16 Open)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	5	3	Yes	Analysis
3	EC Closed 2025 (U16 Open)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U16 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	4	Yes	Analysis
5	Eastern Cape Inter-Regional Team Chess Championship 2025 (U16)	2025-07-10	2025-07-11	Standard	Amathole (EAL)	5	4	1	Yes	Analysis
6	NMBCU Closed 2025 (U16)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
7	NMBCU Open 2025 (B)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
8	NMBCU Trial 4 2025 (U16)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
9	Karen Ashworth 2025 (A)	2025-04-26	2025-04-26	Standard	Nelson Mandela Bay (ENM)	5	0	0	No	Analysis
10	NMB 3rd Trials 2025 (U16)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
11	NMB 2nd Trials 2025 (U16)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
12	UCC Strategic Moves 2025 (A)	2025-02-28	2025-03-01	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
13	Pearson High Chess Festival 2025 (B)	2025-02-21	2025-02-22	Standard	Nelson Mandela Bay (ENM)	5	5	4.5	Yes	Analysis
14	NMBCH Trial 1 2025 (U16)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
15	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Candidates)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	5	Yes	Analysis
16	NMBCU Closed 2024 (U14)	2024-09-20	2024-09-21	Standard	Nelson Mandela Bay (ENM)	6	5	3	Yes	Analysis
17	NMBCU Trial 5 2024 (U14)	2024-08-16	2024-08-17	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
18	Karen Ashworth 2024 (A)	2024-07-19	2024-07-20	Standard	Nelson Mandela Bay (ENM)	6	5	2	Yes	Analysis
19	NMBCU Trials 4 2024 (U14)	2024-07-12	2024-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
20	NMBCU Trial 3 2024 (U14)	2024-05-10	2024-05-11	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
21	NMBCU Trials 2 2024 (U14)	2024-04-12	2024-04-13	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
22	UCC Strategic Moves 2024 (B)	2024-03-08	2024-03-09	Standard	Nelson Mandela Bay (ENM)	5	5	5	Yes	Analysis
23	Madibaz Chess Tournament 2024 (B)	2024-03-01	2024-03-02	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
24	NMBCU Trials 1 2024 (U14)	2024-02-16	2024-02-16	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
25	NMBCU Closed 2023 (U14)	2023-08-11	2023-08-12	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
26	NMBCU Trial 4 2023 (U14)	2023-07-28	2023-07-29	Standard	Nelson Mandela Bay (ENM)	6	5	3	Yes	Analysis
27	EP Trials 3 2023 (U14)	2023-05-05	2023-05-06	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
28	NMB 2nd Trials 2023 (U14)	2023-03-24	2023-03-25	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
29	NMB 1st Trials 2023 (U14)	2023-02-17	2023-02-18	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis

#	Games	Start				End
1	17	Tournament Mzansi Interprovincial Youth Chess Championships 2024				Tournament UCC Strategic Moves 2025
		date 2024-12-18	rnd 6	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 0.5
		Opponent Mamabolo, T (Tshepang)				Opponent Freeman, V (Vianco)
2	11	Tournament Madibaz Chess Tournament 2024				Tournament NMBCU Trials 2 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-04-13	rnd 3	type Standard	result 0.5
		Opponent Boggenpoel, B (Blake)				Opponent Norris, N (Nathan)
3	10	Tournament NMB 2nd Trials 2025				Tournament NMB 3rd Trials 2025
		date 2025-03-07	rnd 1	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Mndai, O (Okuhle)				Opponent Twigg, G (Garen)

#	Games	Start				End
1	17	Tournament Mzansi Interprovincial Youth Chess Championships 2024				Tournament UCC Strategic Moves 2025
		date 2024-12-18	rnd 6	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 0.5
		Opponent Mamabolo, T (Tshepang)				Opponent Freeman, V (Vianco)
2	11	Tournament Madibaz Chess Tournament 2024				Tournament NMBCU Trials 2 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-04-13	rnd 3	type Standard	result 0.5
		Opponent Boggenpoel, B (Blake)				Opponent Norris, N (Nathan)
3	10	Tournament NMB 2nd Trials 2025				Tournament NMB 3rd Trials 2025
		date 2025-03-07	rnd 1	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Mndai, O (Okuhle)				Opponent Twigg, G (Garen)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	10	Tournament Madibaz Chess Tournament 2024				Tournament NMBCU Trials 2 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Boggenpoel, B (Blake)				Opponent Boggenpoel, B (Blake)
2	4	Tournament NMB 3rd Trials 2025				Tournament NMB 3rd Trials 2025
		date 2025-04-11	rnd 1	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Hall, J (Joshua)				Opponent Twigg, G (Garen)
3	4	Tournament NMBCH Trial 1 2025				Tournament Pearson High Chess Festival 2025
		date 2025-02-15	rnd 6	type Standard	result 1	date 2025-02-22	rnd 3	type Standard	result 1
		Opponent Chipunza, J (Jared)				Opponent Step, N (Nicholas)

#	Games	Start				End
1	10	Tournament Madibaz Chess Tournament 2024				Tournament NMBCU Trials 2 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Boggenpoel, B (Blake)				Opponent Boggenpoel, B (Blake)
2	4	Tournament NMB 3rd Trials 2025				Tournament NMB 3rd Trials 2025
		date 2025-04-11	rnd 1	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Hall, J (Joshua)				Opponent Twigg, G (Garen)
3	4	Tournament NMBCH Trial 1 2025				Tournament Pearson High Chess Festival 2025
		date 2025-02-15	rnd 6	type Standard	result 1	date 2025-02-22	rnd 3	type Standard	result 1
		Opponent Chipunza, J (Jared)				Opponent Step, N (Nicholas)

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	Clainos ,S (Spiro)	6	1	-283.3	6	1	-283.3	0	0	0	0	0	0
1	Clainos ,S (Spiro)	6	1600.6	1317.3	6	1596.5	1317.3	0	0	0	0	0	0
2	Ranjith ,A (Aishwarya)	5	0.5	-340	5	0.5	-340	0	0	0	0	0	0
2	Ranjith ,A (Aishwarya)	5	1398.6	1058.6	5	1398.2	1058.6	0	0	0	0	0	0
3	Blandy ,L (Levi)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
3	Blandy ,L (Levi)	5	1399.6	1399.6	5	1412.3	1399.6	0	0	0	0	0	0
4	Coetzee ,S (Schalk)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
4	Coetzee ,S (Schalk)	5	1409.6	1409.6	5	1406	1409.6	0	0	0	0	0	0
5	Brown ,N (Nathan)	4	2	0	4	2	0	0	0	0	0	0	0
5	Brown ,N (Nathan)	4	1442.3	1442.3	4	1454.9	1442.3	0	0	0	0	0	0
6	Banda ,B (Benjamin)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
6	Banda ,B (Benjamin)	4	1493.6	1599.8	4	1501.8	1599.8	0	0	0	0	0	0
7	Chipunza ,J (Jared)	4	2	0	4	2	0	0	0	0	0	0	0
7	Chipunza ,J (Jared)	4	1591.9	1591.9	4	1593.4	1591.9	0	0	0	0	0	0
8	Dugmore ,D (Deacon)	4	0.5	-318.8	4	0.5	-318.8	0	0	0	0	0	0
8	Dugmore ,D (Deacon)	4	1465.4	1146.7	4	1467.4	1146.7	0	0	0	0	0	0
9	Norris ,N (Nathan)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
9	Norris ,N (Nathan)	4	1285	1391.2	4	1277.2	1391.2	0	0	0	0	0	0
10	Koutsouvelis ,J (Joshua)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
10	Koutsouvelis ,J (Joshua)	3	1280.6	997.3	3	1285.3	997.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Coetzee, S (Samual)

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