Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, M (Marli)

Chess SA id

210089870

FIDE id

Date of birth

2010-07-22 (U16)

Gender

Female

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-01-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1108.3	1101.6	615.6	615.6
Raw rating	1108.3	1101.6	615.6	615.6
Weighted rating	1108.3	1101.6	615.6	615.6
Weighted performance	231.9	230.3	0	0
Floor	669.5	665.6	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	189	190.8	381.3	381.3
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-03-01	1200 2024-03-01
Highest raw rating	1169.5 2019-12-01	1165.6 2019-12-01	615.6 2024-03-01	615.6 2024-03-01
Highest weighted rating	1169.5 2024-11-01	1165.6 2024-11-01	615.6 2024-11-01	615.6 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1108.3	1101.6	615.6	615.6
Analysis
Rating	1108.3	1101.6	615.6	615.6
Raw rating	1108.3	1101.6	615.6	615.6
Weighted rating	1108.3	1101.6	615.6
Weighted performance	231.9	230.3	0
K-factor	40	40	40	40
Floor	669.5	665.6	500	500
Max/Min rating change allowed	189	190.8	381.3	381.3
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	1108.3	1101.6	615.6	615.6
New weighted rating	1108.3	1101.6	615.6	615.6
New weighted performance	231.6	229.9	0	0
Temp new rating	1108.3	1101.6	615.6	615.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1108.3	1101.6	615.6	615.6
New K-factor	40	40	40	40
New floor	669.5	665.6	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	108	108

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U16
Region	Mangaung (FMB)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-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	74	37	50	0	1030.6	1030.6
Standard	74	37	50	0	1030.6	1030.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1108.3	1101.6	615.6	615.6
2025-09-01	1108.3	1101.6	615.6	615.6
2025-08-01	1108.3	1101.6	615.6	615.6
2025-07-01	1108.3	1101.6	615.6	615.6
2025-06-01	1108.3	1101.6	615.6	615.6
2025-05-01	1108.3	1101.6	615.6	615.6
2025-04-01	1108.3	1101.6	615.6	615.6
2025-03-01	1108.3	1101.6	615.6	615.6
2025-02-01	1108.3	1101.6	615.6	615.6
2025-01-01	1108.3	1101.6	615.6	615.6
2024-12-01	1108.3	1101.6	615.6	615.6
2024-11-01	1108.3	1101.6	615.6	615.6
2024-10-01	1108.3	1101.6	615.6	615.6
2024-09-01	1108.3	1101.6	615.6	615.6
2024-08-01	1108.3	1101.6	615.6	615.6
2024-07-01	1108.3	1101.6	615.6	615.6
2024-06-01	1108.3	1101.6	615.6	615.6
2024-08-01	1108.3	1101.6	615.6	615.6
2024-04-01	1108.3	1101.6	615.6	615.6
2024-03-01	1108.3	1101.6	615.6	615.6
2024-02-01	1108.3	1101.6	615.6	615.6
2024-01-01	1108.3	1101.6	615.6	615.6
2023-12-01	1108.3	1101.6	615.6	615.6
2023-11-01	1108.3	1101.6	615.6	615.6

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	2019 South African Junior Team Championships (U10C)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	2.5	Yes	Analysis
2	Lejweleputswa 5th Qualifier 2019 (U10)	2019-04-13	2019-04-13	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
3	Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019 (E)	2019-01-26	2019-01-26	Standard	Lejweleputswa (FLW)	5	5	4	Yes	Analysis
4	South African Junior Team Championships 2018 (U10C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	1	Yes	Analysis
5	Lejweleputswa 1st Qualifier 2019 (U10)	2018-10-27	2018-10-27	Standard	Lejweleputswa (FLW)	5	5	4	Yes	Analysis
6	South African Open 2018 (C)	2018-07-11	2018-07-13	Standard	Mangaung (FMB)	6	6	1	Yes	Analysis
7	Lejweleputswa 7th Qualifying Swiss Open Tournament 2018 (U10)	2018-06-23	2018-06-23	Standard	Lejweleputswa (FLW)	5	5	5	Yes	Analysis
8	Inter Regional 2018 (U10 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	3	1.5	Yes	Analysis
9	Lejweleputswa 6th Qualifying Swiss Open Tournament 2018 (E)	2018-05-26	2018-05-26	Standard	Lejweleputswa (FLW)	5	4	1.5	Yes	Analysis
10	Lejweleputswa 5th Qualifying Swiss Open Tournament 2018 (U10)	2018-04-21	2018-04-21	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
11	Lejweleputswa 4th Qualifying Swiss Open Tournament 2018 (F)	2018-03-10	2018-03-10	Standard	Lejweleputswa (FLW)	5	5	4	Yes	Analysis
12	Lejweleputswa 2nd Qualifying Swiss Open Tournament 2018 (G)	2018-01-27	2018-01-27	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
13	South African Junior Wildcard Championships 2017 (U8 Girls)	2018-01-09	2018-01-12	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
14	South African Junior Team Championships 2017 (U8B+U8 Girls)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	6	3.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 5th Qualifier 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-04-13	rnd 1	type Standard	result 1
		Opponent Nieuwoudt, W (Wian)				Opponent Radebe, B (Boitumelo)
2	5	Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018
		date 2018-06-23	rnd 1	type Standard	result 1	date 2018-06-23	rnd 5	type Standard	result 1
		Opponent Erasmus, N (Niekie)				Opponent Van Staden, M (Mia)
3	4	Tournament Inter Regional 2018				Tournament Lejweleputswa 6th Qualifying Swiss Open Tournament 2018
		date 2018-05-04	rnd 2	type Standard	result 0.5	date 2018-05-26	rnd 3	type Standard	result 1
		Opponent Boje, E (Ewald)				Opponent Bonthuyzen, L (Lize)

#	Games	Start				End
1	5	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 5th Qualifier 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-04-13	rnd 1	type Standard	result 1
		Opponent Nieuwoudt, W (Wian)				Opponent Radebe, B (Boitumelo)
2	5	Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018
		date 2018-06-23	rnd 1	type Standard	result 1	date 2018-06-23	rnd 5	type Standard	result 1
		Opponent Erasmus, N (Niekie)				Opponent Van Staden, M (Mia)
3	4	Tournament Inter Regional 2018				Tournament Lejweleputswa 6th Qualifying Swiss Open Tournament 2018
		date 2018-05-04	rnd 2	type Standard	result 0.5	date 2018-05-26	rnd 3	type Standard	result 1
		Opponent Boje, E (Ewald)				Opponent Bonthuyzen, L (Lize)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 5th Qualifier 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-04-13	rnd 1	type Standard	result 1
		Opponent Nieuwoudt, W (Wian)				Opponent Radebe, B (Boitumelo)
2	5	Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018
		date 2018-06-23	rnd 1	type Standard	result 1	date 2018-06-23	rnd 5	type Standard	result 1
		Opponent Erasmus, N (Niekie)				Opponent Van Staden, M (Mia)
3	4	Tournament Lejweleputswa 4th Qualifying Swiss Open Tournament 2018				Tournament Lejweleputswa 4th Qualifying Swiss Open Tournament 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 4	type Standard	result 1
		Opponent Swart, N (Nathan)				Opponent Michalakis, S (Stylianos)

#	Games	Start				End
1	5	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 5th Qualifier 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-04-13	rnd 1	type Standard	result 1
		Opponent Nieuwoudt, W (Wian)				Opponent Radebe, B (Boitumelo)
2	5	Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2018
		date 2018-06-23	rnd 1	type Standard	result 1	date 2018-06-23	rnd 5	type Standard	result 1
		Opponent Erasmus, N (Niekie)				Opponent Van Staden, M (Mia)
3	4	Tournament Lejweleputswa 4th Qualifying Swiss Open Tournament 2018				Tournament Lejweleputswa 4th Qualifying Swiss Open Tournament 2018
		date 2018-03-10	rnd 1	type Standard	result 1	date 2018-03-10	rnd 4	type Standard	result 1
		Opponent Swart, N (Nathan)				Opponent Michalakis, S (Stylianos)

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	Nel ,C (Carlize)	3	3	425	3	3	425	0	0	0	0	0	0
1	Nel ,C (Carlize)	3	1189.3	1614.3	3	1192.8	1614.3	0	0	0	0	0	0
2	Smith ,W (Willem)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
2	Smith ,W (Willem)	3	1167.2	1167.2	3	1163.2	1167.2	0	0	0	0	0	0
3	Van Staden ,M (Mia)	2	2	425	2	2	425	0	0	0	0	0	0
3	Van Staden ,M (Mia)	2	1164.8	1589.8	2	1159.2	1589.8	0	0	0	0	0	0
4	Boje ,E (Ewald)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
4	Boje ,E (Ewald)	2	791.8	1004.2	2	772.5	1004.2	0	0	0	0	0	0
5	Michalakis ,S (Stefanos)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Michalakis ,S (Stefanos)	2	1154.1	729.1	2	1160.6	729.1	0	0	0	0	0	0
6	Makhetha ,L (Lulo)	2	1	0	2	1	0	0	0	0	0	0	0
6	Makhetha ,L (Lulo)	2	1211.8	1211.8	2	1211.9	1211.8	0	0	0	0	0	0
7	Erasmus ,N (Niekie)	2	2	425	2	2	425	0	0	0	0	0	0
7	Erasmus ,N (Niekie)	2	1160.3	1585.3	2	1155.8	1585.3	0	0	0	0	0	0
8	Michalakis ,S (Stylianos)	2	1	0	2	1	0	0	0	0	0	0	0
8	Michalakis ,S (Stylianos)	2	1107.8	1107.8	2	1119	1107.8	0	0	0	0	0	0
9	Moorosi ,K (Khutso)	1	1	425	1	1	425	0	0	0	0	0	0
9	Moorosi ,K (Khutso)	1	1177.5	1602.5	1	1172.4	1602.5	0	0	0	0	0	0
10	Michaels ,SA (Sydney Ann)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Michaels ,SA (Sydney Ann)	1	500	75	1	500	75	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jacobs, M (Marli)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms