Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, J (Johannes)

Chess SA id

1100309072

FIDE id

Date of birth

2010-03-02 (U18)

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

Item	Main	Standard	Rapid	Blitz
Rating	1278.2	1291.5	1200	1200
Raw rating	1278.2	1291.5	1200	1200
Weighted rating	1234.5	1241.1	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	1234.5	1241.1	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	1238.9	1246.3	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
2026-01-01	1278.2	1291.5	1200	1200
2025-11-30	1278.2	1291.5	1200	1200
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
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	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

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 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

Ratings

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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