Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, M (Mj)

Chess SA id

1100155576

FIDE id

Date of birth

2010-08-05 (U16)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1291.2	1306.3	1180.4	1200
Raw rating	1291.2	1306.3	1180.4	1200
Weighted rating	1227.8	1233.5	1180.3	1200
Weighted performance	0	0	0	0
Floor	791.2	806.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	145.6	142.5	170.5	165.8
Highest rating	1291.2 2025-09-01	1306.3 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1291.2 2025-09-01	1306.3 2025-09-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1221.5 2025-09-01	1226.2 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1260.4 2024-08-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1291.2	1306.3	1180.4	1200
Analysis
Rating	1291.2	1306.3	1180.4	1200
Raw rating	1291.2	1306.3	1180.4	1200
Weighted rating	1227.8	1233.5	1180.3
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	791.2	806.3	700	700
Max/Min rating change allowed	145.6	142.5	170.5	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	1291.2	1306.3	1180.4	1200
New weighted rating	1233.8	1240.4	1180.3	1200
New weighted performance	0	0	0	0
Temp new rating	1291.2	1306.3	1180.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1291.2	1306.3	1180.4	1200
New K-factor	36	36	36	36
New floor	791.2	806.3	700	700

Item	Main	Standard	Rapid
	0	0	0
	9	9	0
	5	5	0
	5	0	5
	0	0	0
	0	0	0
History	19	14	5

Games since
	Main 14	Standard 14		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
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	9	7	77.78	236.1	1257.8	1493.9
Standard	9	7	77.78	236.1	1257.8	1493.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	19	11.5	60.53	89.5	1264.7	1354.2
Standard	14	9.5	67.86	151.8	1259.9	1411.7
Rapid	5	2	40	-85	1278.1	1193.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1291.2	1306.3	1180.4	1200
2025-09-01	1291.2	1306.3	1180.4	1200
2025-08-01	1267.8	1281.3	1180.4	1200
2025-07-01	1267.8	1281.3	1180.4	1200
2025-06-01	1208	1210.1	1180.4	1200
2025-05-01	1208	1210.1	1180.4	1200
2025-04-01	1208	1210.1	1180.4	1200
2025-03-01	1208	1210.1	1180.4	1200
2025-02-01	1208	1210.1	1180.4	1200
2025-01-01	1208	1210.1	1180.2	1200
2024-12-01	1208	1210.1	1180.2	1200
2024-11-01	1208	1210.1	1180.2	1200
2024-10-01	1208	1210.1	1180.2	1200
2024-09-01	1208	1210.1	1180.2	1200
2024-08-01	1198.1	1200	1180.2	1200
2024-07-01	1198.1	1200	1180.2	1200
2024-06-01	1198.1	1200	1180.2	1200
2024-08-01	1198.1	1200	1180.2	1200
2024-04-01	1198.1	1200	1180.2	1200
2024-03-01	1198.1	1200	1180.2	1200
2024-02-01	1198.1	1200	1180.2	1200
2024-01-01	1198.1	1200	1180.2	1200
2023-12-01	1198.1	1200	1180.2	1200
2023-11-01	1198.1	1200	1180.2	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	GDE (D8) Sedibeng West Schools - Teams 2025 (U15)	2025-08-16	2025-08-16	Standard	Sedibeng (GSV)	5	4	3	Yes	Analysis
2	GDE (D8) Sedibeng West Schools Individuals 2025 (U15 Boys)	2025-06-07	2025-06-07	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	GDE (D8) Sedibeng West Schools - Teams 2025 (U15)	2025-08-16	2025-08-16	Standard	Sedibeng (GSV)	5	4	3	Yes	Analysis
2	GDE (D8) Sedibeng West Schools Individuals 2025 (U15 Boys)	2025-06-07	2025-06-07	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
3	Sedibeng West District Schools Chess Team's Championships 2024 (U15)	2024-08-12	2024-08-12	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
4	Gauteng Open Arnold Classic 2023 (U16)	2023-05-19	2023-05-19	Rapid	Tshwane (GTP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament GDE (D8) Sedibeng West Schools Individuals 2025
		date 2024-08-12	rnd 5	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Sefafe, P (Poloko)				Opponent Okelly, R (Ryan)
2	2	Tournament GDE (D8) Sedibeng West Schools - Teams 2025				Tournament GDE (D8) Sedibeng West Schools - Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Ngwenya, T (Thabiso)				Opponent Mayekane, LM (Lesedi Mamello)
3	2	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-08-12	rnd 2	type Standard	result 1	date 2024-08-12	rnd 3	type Standard	result 0.5
		Opponent Bester, E (Erich)				Opponent Molahlehi, B (Boitumelo)

#	Games	Start				End
1	5	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament GDE (D8) Sedibeng West Schools Individuals 2025
		date 2024-08-12	rnd 5	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Sefafe, P (Poloko)				Opponent Okelly, R (Ryan)
2	2	Tournament GDE (D8) Sedibeng West Schools - Teams 2025				Tournament GDE (D8) Sedibeng West Schools - Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Ngwenya, T (Thabiso)				Opponent Mayekane, LM (Lesedi Mamello)
3	2	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament Sedibeng West District Schools Chess Team's Championships 2024
		date 2024-08-12	rnd 2	type Standard	result 1	date 2024-08-12	rnd 3	type Standard	result 0.5
		Opponent Bester, E (Erich)				Opponent Molahlehi, B (Boitumelo)

#	Games	Start				End
1	1	Tournament Gauteng Open Arnold Classic 2023				Tournament Gauteng Open Arnold Classic 2023
		date 2023-05-19	rnd 5	type Rapid	result 1	date 2023-05-19	rnd 5	type Rapid	result 1
		Opponent Ngoy, J (Joe)				Opponent Ngoy, J (Joe)
2	1	Tournament Gauteng Open Arnold Classic 2023				Tournament Gauteng Open Arnold Classic 2023
		date 2023-05-19	rnd 2	type Rapid	result 1	date 2023-05-19	rnd 2	type Rapid	result 1
		Opponent Seema, B (Bafokeng)				Opponent Seema, B (Bafokeng)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament GDE (D8) Sedibeng West Schools Individuals 2025
		date 2024-08-12	rnd 5	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Sefafe, P (Poloko)				Opponent Okelly, R (Ryan)
2	2	Tournament GDE (D8) Sedibeng West Schools - Teams 2025				Tournament GDE (D8) Sedibeng West Schools - Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Ngwenya, T (Thabiso)				Opponent Mayekane, LM (Lesedi Mamello)
3	1	Tournament GDE (D8) Sedibeng West Schools - Teams 2025				Tournament GDE (D8) Sedibeng West Schools - Teams 2025
		date 2025-08-16	rnd 2	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Mulaudzi, R (Rofhiwa)				Opponent Mulaudzi, R (Rofhiwa)

#	Games	Start				End
1	5	Tournament Sedibeng West District Schools Chess Team's Championships 2024				Tournament GDE (D8) Sedibeng West Schools Individuals 2025
		date 2024-08-12	rnd 5	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Sefafe, P (Poloko)				Opponent Okelly, R (Ryan)
2	2	Tournament GDE (D8) Sedibeng West Schools - Teams 2025				Tournament GDE (D8) Sedibeng West Schools - Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Ngwenya, T (Thabiso)				Opponent Mayekane, LM (Lesedi Mamello)
3	1	Tournament GDE (D8) Sedibeng West Schools - Teams 2025				Tournament GDE (D8) Sedibeng West Schools - Teams 2025
		date 2025-08-16	rnd 2	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Mulaudzi, R (Rofhiwa)				Opponent Mulaudzi, R (Rofhiwa)

#	Games	Start				End
1	1	Tournament Gauteng Open Arnold Classic 2023				Tournament Gauteng Open Arnold Classic 2023
		date 2023-05-19	rnd 5	type Rapid	result 1	date 2023-05-19	rnd 5	type Rapid	result 1
		Opponent Ngoy, J (Joe)				Opponent Ngoy, J (Joe)
2	1	Tournament Gauteng Open Arnold Classic 2023				Tournament Gauteng Open Arnold Classic 2023
		date 2023-05-19	rnd 2	type Rapid	result 1	date 2023-05-19	rnd 2	type Rapid	result 1
		Opponent Seema, B (Bafokeng)				Opponent Seema, B (Bafokeng)

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	More ,N (Nqobile)	2	1	0	2	1	0	0	0	0	0	0	0
1	More ,N (Nqobile)	2	1272.6	1272.6	2	1249.3	1272.6	0	0	0	0	0	0
2	Zondo ,T (Thando)	1	1	425	1	1	425	0	0	0	0	0	0
2	Zondo ,T (Thando)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Okelly ,R (Ryan)	1	1	425	1	1	425	0	0	0	0	0	0
3	Okelly ,R (Ryan)	1	1283.2	1708.2	1	1293.6	1708.2	0	0	0	0	0	0
4	Kemp ,J (Jowan)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Kemp ,J (Jowan)	1	1515.6	1090.6	1	1519.3	1090.6	0	0	0	0	0	0
5	Ntshangase ,S (Siphiwe)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ntshangase ,S (Siphiwe)	1	1381.8	956.8	1	1306.9	956.8	0	0	0	0	0	0
6	Sefafe ,P (Poloko)	1	1	425	1	1	425	0	0	0	0	0	0
6	Sefafe ,P (Poloko)	1	1273	1698	1	1283.6	1698	0	0	0	0	0	0
7	Molahlehi ,B (Boitumelo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Molahlehi ,B (Boitumelo)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
8	Bester ,E (Erich)	1	1	425	1	1	425	0	0	0	0	0	0
8	Bester ,E (Erich)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Mofokeng ,M (Mathabo)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mofokeng ,M (Mathabo)	1	1263.9	838.9	1	1287.9	838.9	0	0	0	0	0	0
10	Mahlope ,P (Poloko)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mahlope ,P (Poloko)	1	1200	1625	1	1200	1625	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

Jacobs, M (Mj)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms