Chess South Africa Ratings Database

PLAYER PAGE

Personal

Petersen, MG (Marc Gideon)

Chess SA id

185029784

FIDE id

Date of birth

1985-02-27 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1464.5	1459.6	1515.6	1516
Raw rating	1445.5	1439.6	1515.6	1516
Weighted rating	1464.5	1459.6	1515.4	1516
Weighted performance	675.3	658.6	0	0
Floor	1016	1016	1016	1016
K-factor	32	32	32	32
Min/Max rating change allowed	116.9	117.9	105.8	105.7
Highest rating	1516 2018-02-01	1516 2018-02-01	1516 2019-10-01	1516 2019-10-01
Highest raw rating	1516 2018-02-01	1516 2018-02-01	1516 2018-02-01	1516 2024-02-01
Highest weighted rating	1516 2018-02-01	1516 2018-02-01	1516 2019-10-01	1516 2019-10-01
Highest weighted performance	1465.3 2018-07-01	1466.4 2018-07-01	1335.4 2019-10-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.6	-1.7	0	0
New rating	1462.9	1458	1515.6	1516
Analysis
Rating	1464.5	1459.6	1515.6	1516
Raw rating	1445.5	1439.6	1515.6	1516
Weighted rating	1464.5	1459.6	1515.4
Weighted performance	675.3	658.6	0
K-factor	32	32	32	32
Floor	1016	1016	1016	1016
Max/Min rating change allowed	116.9	117.9	105.8	105.7
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	1445.5	1439.6	1515.6	1516
New weighted rating	1462.9	1458	1515.6	1516
New weighted performance	666.8	650.1	0	0
Temp new rating	1462.9	1458	1515.6	1516
Temp new rating +/-	-1.6	-1.7	0	0
Final new rating +/-	-1.6	-1.7	0	0
New rating	1462.9	1458	1515.6	1516
New K-factor	32	32	32	32
New floor	1016	1016	1016	1016

Item	Main	Standard	Rapid
	0	0	0
	4	4	0
	5	5	0
	0	0	0
	17	17	0
	0	0	0
History	304	297	7

Games since
	Main 9	Standard 9		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	4	1.5	37.5	-106.2	1470.6	1364.3
Standard	4	1.5	37.5	-106.2	1470.6	1364.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	84	51.5	61.31	96.1	1341.6	1437.7
Standard	77	47.5	61.69	99.4	1343.8	1443.2
Rapid	7	4	57.14	60.7	1316.8	1377.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1445.5	1439.6	1515.6	1516
2025-09-30	1466.3	1461.4	1515.6	1516
2025-09-01	1466.3	1461.4	1515.6	1516
2025-08-01	1466.3	1461.4	1515.6	1516
2025-07-01	1466.3	1461.4	1515.6	1516
2025-06-01	1466.3	1461.4	1515.6	1516
2025-05-01	1466.3	1461.4	1515.6	1516
2025-04-01	1466.3	1461.4	1515.6	1516
2025-03-01	1466.3	1461.4	1515.6	1516
2025-02-01	1466.2	1461.4	1515.6	1516
2025-01-01	1465.2	1461	1515.6	1516
2024-12-01	1465.2	1461	1515.6	1516
2024-11-01	1465.2	1461	1515.6	1516
2024-10-01	1465.2	1461	1515.6	1516
2024-09-01	1466.8	1461.6	1515.6	1516
2024-08-01	1466.8	1461.6	1515.6	1516
2024-07-01	1466.8	1461.6	1515.6	1516
2024-09-01	1466.8	1461.6	1515.6	1516
2024-05-01	1466.8	1461.6	1515.6	1516
2024-04-01	1466.8	1461.6	1515.6	1516
2024-03-01	1466.8	1461.6	1515.6	1516
2024-02-01	1466.8	1461.6	1515.6	1516
2024-01-01	1466.8	1461.6	1515.6	1516
2023-12-01	1466.8	1461.6	1467.7	1516

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	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	3	0.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	1	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	3	0.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	1	1	Yes	Analysis
3	CT League 2024 (A)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	5	1.5	Yes	Analysis
4	South African Open 2022 (B)	2022-07-09	2022-07-17	Standard	Cape Town (WCT)	11	11	6.5	Yes	Analysis
5	WP Closed 2022 (D)	2022-06-17	2022-06-17	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
6	SAPS WC Chess Club Rapid 2019 (Men)	2019-10-21	2019-10-21	Rapid	Frances Baard (NCF)	7	7	4	Yes	Analysis
7	SAPS National Individual Chess Championship 2019 (Men)	2019-10-23	2019-10-25	Standard	Frances Baard (NCF)	9	9	5.5	Yes	Analysis
8	SAPS National Team Chess Championship 2019	2019-10-26	2019-10-30	Standard	Frances Baard (NCF)	9	9	6	Yes	Analysis
9	2018 Western Province League (B)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	4	2	Yes	Analysis
10	SAPS National Individual Championship 2018 (Men)	2018-09-12	2018-09-15	Standard	Xhariep (FXT)	9	9	5.5	Yes	Analysis
11	SAPS National Team Championship 2018	2018-09-11	2018-09-11	Standard	Xhariep (FXT)	9	9	7.5	Yes	Analysis
12	South African Open 2018 (B)	2018-07-07	2018-07-14	Standard	Mangaung (FMB)	11	11	7	Yes	Analysis

#	Games	Start				End
1	24	Tournament 2018 Western Province League				Tournament SAPS WC Chess Club Rapid 2019
		date 2018-08-11	rnd 4	type Standard	result 0.5	date 2019-10-21	rnd 3	type Rapid	result 1
		Opponent Davids, K (Keegan)				Opponent Jacobs, J (Jacques Peter)
2	11	Tournament SAPS National Individual Chess Championship 2019				Tournament SAPS National Team Chess Championship 2019
		date 2019-10-24	rnd 4	type Standard	result 1	date 2019-10-28	rnd 5	type Standard	result 1
		Opponent Ntuli, S (Sb)				Opponent Moepeng, JS (Joseph)
3	9	Tournament WP Closed 2022				Tournament South African Open 2022
		date 2022-06-17	rnd 3	type Standard	result 1	date 2022-07-11	rnd 5	type Standard	result 0.5
		Opponent Ziegers, CN (Chad)				Opponent Parenzee, E (Ethan)

#	Games	Start				End
1	22	Tournament 2018 Western Province League				Tournament SAPS National Individual Chess Championship 2019
		date 2018-08-11	rnd 4	type Standard	result 0.5	date 2019-10-23	rnd 1	type Standard	result 1
		Opponent Davids, K (Keegan)				Opponent Mncwabe, B (Bojas)
2	11	Tournament SAPS National Individual Chess Championship 2019				Tournament SAPS National Team Chess Championship 2019
		date 2019-10-24	rnd 4	type Standard	result 1	date 2019-10-28	rnd 5	type Standard	result 1
		Opponent Ntuli, S (Sb)				Opponent Moepeng, JS (Joseph)
3	9	Tournament WP Closed 2022				Tournament South African Open 2022
		date 2022-06-17	rnd 3	type Standard	result 1	date 2022-07-11	rnd 5	type Standard	result 0.5
		Opponent Ziegers, CN (Chad)				Opponent Parenzee, E (Ethan)

#	Games	Start				End
1	3	Tournament SAPS WC Chess Club Rapid 2019				Tournament SAPS WC Chess Club Rapid 2019
		date 2019-10-21	rnd 1	type Rapid	result 1	date 2019-10-21	rnd 3	type Rapid	result 1
		Opponent Gabriels, Z (Zaid)				Opponent Jacobs, J (Jacques Peter)
2	1	Tournament SAPS WC Chess Club Rapid 2019				Tournament SAPS WC Chess Club Rapid 2019
		date 2019-10-21	rnd 7	type Rapid	result 0.5	date 2019-10-21	rnd 7	type Rapid	result 0.5
		Opponent Muizenheimer, A (Ashley)				Opponent Muizenheimer, A (Ashley)
3	1	Tournament SAPS WC Chess Club Rapid 2019				Tournament SAPS WC Chess Club Rapid 2019
		date 2019-10-21	rnd 5	type Rapid	result 0.5	date 2019-10-21	rnd 5	type Rapid	result 0.5
		Opponent Blignaut, R (Ryno)				Opponent Blignaut, R (Ryno)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament SAPS National Team Championship 2018				Tournament SAPS National Team Championship 2018
		date 2018-09-11	rnd 2	type Standard	result 1	date 2018-09-11	rnd 5	type Standard	result 1
		Opponent Lekone, RP (Rantsasa)				Opponent Mohithli, G (Gemi)
2	3	Tournament WP Closed 2022				Tournament WP Closed 2022
		date 2022-06-17	rnd 3	type Standard	result 1	date 2022-06-17	rnd 5	type Standard	result 1
		Opponent Ziegers, CN (Chad)				Opponent Bell, L (Luke)
3	3	Tournament SAPS WC Chess Club Rapid 2019				Tournament SAPS WC Chess Club Rapid 2019
		date 2019-10-21	rnd 1	type Rapid	result 1	date 2019-10-21	rnd 3	type Rapid	result 1
		Opponent Gabriels, Z (Zaid)				Opponent Jacobs, J (Jacques Peter)

#	Games	Start				End
1	4	Tournament SAPS National Team Championship 2018				Tournament SAPS National Team Championship 2018
		date 2018-09-11	rnd 2	type Standard	result 1	date 2018-09-11	rnd 5	type Standard	result 1
		Opponent Lekone, RP (Rantsasa)				Opponent Mohithli, G (Gemi)
2	3	Tournament WP Closed 2022				Tournament WP Closed 2022
		date 2022-06-17	rnd 3	type Standard	result 1	date 2022-06-17	rnd 5	type Standard	result 1
		Opponent Ziegers, CN (Chad)				Opponent Bell, L (Luke)
3	2	Tournament SAPS National Team Chess Championship 2019				Tournament SAPS National Team Chess Championship 2019
		date 2019-10-28	rnd 7	type Standard	result 1	date 2019-10-29	rnd 8	type Standard	result 1
		Opponent Mccarthy, E (Eugene)				Opponent Sopazi, S (Sebenzile)

#	Games	Start				End
1	3	Tournament SAPS WC Chess Club Rapid 2019				Tournament SAPS WC Chess Club Rapid 2019
		date 2019-10-21	rnd 1	type Rapid	result 1	date 2019-10-21	rnd 3	type Rapid	result 1
		Opponent Gabriels, Z (Zaid)				Opponent Jacobs, J (Jacques Peter)

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	Jacobs ,J (Jacques Peter)	3	1.5	0	2	0.5	-212.5	1	1	425	0	0	0
1	Jacobs ,J (Jacques Peter)	3	1310.5	1310.5	2	1282.9	1098	1	1200	1735.5	0	0	0
2	Matloa ,OJ (Oupa Jeffrey)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
2	Matloa ,OJ (Oupa Jeffrey)	2	1425.1	1212.6	2	1422.5	1212.6	0	0	0	0	0	0
3	Lekone ,RP (Rantsasa Petrus)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
3	Lekone ,RP (Rantsasa Petrus)	2	1439.2	1651.7	2	1439.2	1651.7	0	0	0	0	0	0
4	Moepeng ,JS (Joseph Serame)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
4	Moepeng ,JS (Joseph Serame)	2	1250.8	1463.3	2	1247.7	1463.3	0	0	0	0	0	0
5	Mohapi ,K (Kamohelo)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Mohapi ,K (Kamohelo)	2	1243.3	1455.8	2	1236.2	1455.8	0	0	0	0	0	0
6	Gabriels ,Z (Zaid)	2	1.5	212.5	1	0.5	0	1	1	425	0	0	0
6	Gabriels ,Z (Zaid)	2	1333.6	1546.1	1	1372.5	1333.6	1	1372.5	1758.6	0	0	0
7	Salters ,B (Brian)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Salters ,B (Brian)	1	1241.8	1241.8	1	1250.4	1241.8	0	0	0	0	0	0
8	Davids ,K (Keegan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Davids ,K (Keegan)	1	1307.9	1307.9	1	1307.9	1307.9	0	0	0	0	0	0
9	Tshinavhe ,R (Rembuluwani)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Tshinavhe ,R (Rembuluwani)	1	1622.2	1622.2	1	1625.8	1622.2	0	0	0	0	0	0
10	Landman ,J (Johan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Landman ,J (Johan)	1	1417.7	1842.7	1	1414	1842.7	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

Petersen, MG (Marc Gideon)

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