Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, M (Mj)

Chess SA id

1100155576

FIDE id

Date of birth

2010-08-05 (U18)

Gender

Male

Region

Ekurhuleni (GE)

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	1278.7	1287.6	1180.4	1200
Raw rating	1278.7	1287.6	1180.4	1200
Weighted rating	1242.1	1248.9	1180.3	1200
Weighted performance	1232.3	0	0	0
Floor	791.2	806.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	148.2	146.4	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	1232.8 2025-11-01	1238.9 2025-11-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1260.3 2025-11-01	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	1278.7	1287.6	1180.4	1200
Analysis
Rating	1278.7	1287.6	1180.4	1200
Raw rating	1278.7	1287.6	1180.4	1200
Weighted rating	1242.1	1248.9	1180.3
Weighted performance	1232.3	0	0
K-factor	36	36	36	36
Floor	791.2	806.3	700	700
Max/Min rating change allowed	148.2	146.4	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	1278.7	1287.6	1180.4	1200
New weighted rating	1246.3	1253.5	1180.4	1200
New weighted performance	1223.6	0	0	0
Temp new rating	1278.7	1287.6	1180.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1278.7	1287.6	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
	14	14	0
	5	5	0
	5	0	5
	0	0	0
	0	0	0
History	24	19	5

Games since
	Main 19	Standard 19		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	14	8.5	60.71	91.1	1303.1	1394.2
Standard	14	8.5	60.71	91.1	1303.1	1394.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	24	13	54.17	35.4	1289.7	1325.1
Standard	19	11	57.89	67.1	1292.7	1359.8
Rapid	5	2	40	-85	1278.1	1193.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1278.7	1287.6	1180.4	1200
2025-11-30	1278.7	1287.6	1180.4	1200
2025-11-01	1278.7	1287.6	1180.4	1200
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
2024-11-01	1198.1	1200	1180.2	1200
2024-07-01	1198.1	1200	1180.2	1200
2024-06-01	1198.1	1200	1180.2	1200
2024-05-01	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

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 Gauteng Schools Provincial Individual Chess Championship (U15 Boys)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
2	GDE (D8) Sedibeng West Schools - Teams 2025 (U15)	2025-08-16	2025-08-16	Standard	Sedibeng (GSV)	5	4	3	Yes	Analysis
3	GDE (D8) Sedibeng West Schools Individuals 2025 (U15 Boys)	2025-06-07	2025-06-07	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
4	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
5	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	Kemp ,J (Jowan)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Kemp ,J (Jowan)	1	1515.6	1090.6	1	1519.3	1090.6	0	0	0	0	0	0
3	Sadalla ,J (Johnny)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Sadalla ,J (Johnny)	1	1526.5	1101.5	1	1522.1	1101.5	0	0	0	0	0	0
4	Mayekane ,LM (Lesedi Mamello)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mayekane ,LM (Lesedi Mamello)	1	1176.9	1601.9	1	1176.8	1601.9	0	0	0	0	0	0
5	Kock ,L (Luca)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Kock ,L (Luca)	1	1586	1161	1	1583.3	1161	0	0	0	0	0	0
6	Molahlehi ,B (Boitumelo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Molahlehi ,B (Boitumelo)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
7	Manatha ,N (Nqobile)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Manatha ,N (Nqobile)	1	1410.7	985.7	1	1410.7	985.7	0	0	0	0	0	0
8	Mahlope ,P (Poloko)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mahlope ,P (Poloko)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Ngwenya ,T (Thabiso)	1	1	425	1	1	425	0	0	0	0	0	0
9	Ngwenya ,T (Thabiso)	1	1199.7	1624.7	1	1199.7	1624.7	0	0	0	0	0	0
10	Okelly ,R (Ryan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Okelly ,R (Ryan)	1	1283.2	1708.2	1	1293.6	1708.2	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 (Mj)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms