Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, J (Johannes)

Chess SA id

1100309072

FIDE id

Date of birth

2010-03-02 (U16)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1377

Item	Main	Standard	Rapid	Blitz
Rating	1278.2	1291.5	1200	1200
Raw rating	1278.2	1291.5	1200	1200
Weighted rating	1224.8	1229.9	1200	1200
Weighted performance	0	0	0	0
Floor	778.2	791.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	148.3	145.5	165.8	165.8
Highest rating	1304.2 2024-08-01	1307.1 2024-08-01	1200 2024-10-01	1200 2024-10-01
Highest raw rating	1278.2 2025-11-01	1291.5 2025-11-01	1200 2024-10-01	1200 2024-10-01
Highest weighted rating	1224.8 2025-11-01	1229.9 2025-11-01	1200 2024-10-01	1200 2024-10-01
Highest weighted performance	1304.2 2024-08-01	1307.1 2024-08-01	1200 2024-10-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1278.2	1291.5	1200	1200
Analysis
Rating	1278.2	1291.5	1200	1200
Raw rating	1278.2	1291.5	1200	1200
Weighted rating	1224.8	1229.9	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	778.2	791.5	700	700
Max/Min rating change allowed	148.3	145.5	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	1278.2	1291.5	1200	1200
New weighted rating	1229.8	1235.7	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1278.2	1291.5	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1278.2	1291.5	1200	1200
New K-factor	36	36	36	36
New floor	778.2	791.5	700	700

Item	Main	Standard
	0	0
	15	15
	4	4
	0	0
	0	0
	0	0
History	19	19

Games since
	Main 19	Standard 19		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Tshwane (GTP)
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	15	7.5	50	0	1366	1366
Standard	15	7.5	50	0	1366	1366
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	19	9.5	50	0	1352.8	1352.8
Standard	19	9.5	50	0	1352.8	1352.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1278.2	1291.5	1200	1200
2025-09-30	1274.1	1286.5	1200	1200
2025-09-01	1240.6	1248.3	1200	1200
2025-08-01	1215.9	1220	1200	1200
2025-07-01	1215.9	1220	1200	1200
2025-06-01	1215.9	1220	1200	1200
2025-05-01	1215.9	1220	1200	1200
2025-04-01	1215.9	1220	1200	1200
2025-03-01	1215.9	1220	1200	1200
2025-02-01	1215.9	1220	1200	1200
2025-01-01	1215.9	1220	1200	1200
2024-12-01	1215.9	1220	1200	1200
2024-11-01	1215.9	1220	1200	1200
2024-10-01	1215.9	1220	1200	1200
2024-09-01	1215.9	1220	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	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	2025 Gauteng Top Schools Teams (U15)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	Tshwane Chess Club Clash 2025 (Open)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2025 Tshwane South School District CLOSED League Championship (U15A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U15)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	Tshwane Chess Club Clash 2025 (Open)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2025 Tshwane South School District CLOSED League Championship (U15A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	D4 Tshwane South District Schools Teams Chess Tournament 2024 (U15B)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament Tshwane Chess Club Clash 2025				Tournament Tshwane Chess Club Clash 2025
		date 2025-09-13	rnd 2	type Standard	result 1	date 2025-09-13	rnd 3	type Standard	result 1
		Opponent Zhou, E (Emanance)				Opponent Li, J (Jiming)
2	2	Tournament 2025 Gauteng Top Schools Teams				Tournament 2025 Gauteng Top Schools Teams
		date 2025-08-30	rnd 3	type Standard	result 0.5	date 2025-08-30	rnd 4	type Standard	result 1
		Opponent Chibi, M (Mpho Esihle)				Opponent Menyatsoe, R (Refiloe)
3	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Nonyane, L (Lesedi)				Opponent De Vos, J (Jarod)

#	Games	Start				End
1	2	Tournament Tshwane Chess Club Clash 2025				Tournament Tshwane Chess Club Clash 2025
		date 2025-09-13	rnd 2	type Standard	result 1	date 2025-09-13	rnd 3	type Standard	result 1
		Opponent Zhou, E (Emanance)				Opponent Li, J (Jiming)
2	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Nonyane, L (Lesedi)				Opponent De Vos, J (Jarod)
3	2	Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Kasonga, J (Jemira)				Opponent Bezuidenhout, P (Petrus)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Tshwane Chess Club Clash 2025				Tournament Tshwane Chess Club Clash 2025
		date 2025-09-13	rnd 2	type Standard	result 1	date 2025-09-13	rnd 3	type Standard	result 1
		Opponent Zhou, E (Emanance)				Opponent Li, J (Jiming)
2	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Nonyane, L (Lesedi)				Opponent De Vos, J (Jarod)
3	2	Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Kasonga, J (Jemira)				Opponent Bezuidenhout, P (Petrus)

#	Games	Start				End
1	2	Tournament Tshwane Chess Club Clash 2025				Tournament Tshwane Chess Club Clash 2025
		date 2025-09-13	rnd 2	type Standard	result 1	date 2025-09-13	rnd 3	type Standard	result 1
		Opponent Zhou, E (Emanance)				Opponent Li, J (Jiming)
2	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Nonyane, L (Lesedi)				Opponent De Vos, J (Jarod)
3	2	Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Kasonga, J (Jemira)				Opponent Bezuidenhout, P (Petrus)

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	Mcphail ,M (Matthew)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Mcphail ,M (Matthew)	2	1395.7	970.7	2	1387.6	970.7	0	0	0	0	0	0
2	Mkhaliphi ,JT (John Themba)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mkhaliphi ,JT (John Themba)	1	1774	1349	1	1749.7	1349	0	0	0	0	0	0
3	Mokau ,G (Goseame)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Mokau ,G (Goseame)	1	1291.6	866.6	1	1310.4	866.6	0	0	0	0	0	0
4	Bezuidenhout ,P (Petrus)	1	1	425	1	1	425	0	0	0	0	0	0
4	Bezuidenhout ,P (Petrus)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Ahmid ,K (Kaleem)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ahmid ,K (Kaleem)	1	1514.3	1089.3	1	1497	1089.3	0	0	0	0	0	0
6	De Vos ,J (Jarod)	1	1	425	1	1	425	0	0	0	0	0	0
6	De Vos ,J (Jarod)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Kasonga ,J (Jemira)	1	1	425	1	1	425	0	0	0	0	0	0
7	Kasonga ,J (Jemira)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Menyatsoe ,R (Refiloe)	1	1	425	1	1	425	0	0	0	0	0	0
8	Menyatsoe ,R (Refiloe)	1	1282.9	1707.9	1	1292.7	1707.9	0	0	0	0	0	0
9	Greeff ,A (Andries)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Greeff ,A (Andries)	1	1501.9	1076.9	1	1498	1076.9	0	0	0	0	0	0
10	Nonyane ,L (Lesedi)	1	1	425	1	1	425	0	0	0	0	0	0
10	Nonyane ,L (Lesedi)	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, J (Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms