Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, S (Siyabonga)

Chess SA id

1090325211

FIDE id

Date of birth

2009-02-11 (U18)

Gender

Male

Region

Ngaka Modiri Molema (NNM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1086.6

Item	Main	Standard	Rapid	Blitz
Rating	1185.9	1183.3	1200	1200
Raw rating	1134.5	1122.7	1200	1200
Weighted rating	1185.9	1183.3	1200	1200
Weighted performance	0	0	0	0
Floor	699.9	699.9	700	700
K-factor	40	40	40	40
Min/Max rating change allowed	182	185.1	165.8	165.8
Highest rating	1199.9 2025-08-14	1199.9 2025-08-14	1199.9 2025-08-14	1199.9 2025-08-14
Highest raw rating	1199.9 2025-08-14	1199.9 2025-08-14	1199.9 2025-08-14	1199.9 2025-08-14
Highest weighted rating	1199.9 2025-08-14	1199.9 2025-08-14	1199.9 2025-08-14	1199.9 2025-08-14
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-4.6	-5.5	0	0
New rating	1181.3	1177.8	1200	1200
Analysis
Rating	1185.9	1183.3	1200	1200
Raw rating	1134.5	1122.7	1200	1200
Weighted rating	1185.9	1183.3	1200
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	699.9	699.9	700	700
Max/Min rating change allowed	182	185.1	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	1134.5	1122.7	1200	1200
New weighted rating	1181.3	1177.8	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1181.3	1177.8	1200	1200
Temp new rating +/-	-4.6	-5.5	0	0
Final new rating +/-	-4.6	-5.5	0	0
New rating	1181.3	1177.8	1200	1200
New K-factor	40	40	36	36
New floor	699.9	699.9	700	700

Item	Main	Standard
	0	0
	15	15
	0	0
	0	0
	0	0
	0	0
History	15	15

Games since
	Main 15	Standard 15		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Ngaka Modiri Molema (NNM)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	5	33.33	-141.7	1228.1	1086.4
Standard	15	5	33.33	-141.7	1228.1	1086.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	15	5	33.33	-141.7	1228.1	1086.4
Standard	15	5	33.33	-141.7	1228.1	1086.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1134.5	1122.7	1200	1200
2025-09-30	1132.8	1119.5	1200	1200
2025-09-01	1150.1	1140.3	1200	1200
2025-08-01	1200	1200	1200	1200
2025-07-01	1200	1200	1200	1200
2025-06-01	1200	1200	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	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	Justice Tlamama Open Chess 2025 (U15)	2025-10-18	2025-10-18	Standard	Ngaka Modiri Molema (NNM)	5	5	2	Yes	Analysis
2	Heritage Day Chess 2025 (U14)	2025-09-27	2025-09-27	Standard	Ngaka Modiri Molema (NNM)	5	5	2	Yes	Analysis
3	Woman In Chess 2025 (Open)	2025-08-09	2025-08-09	Standard	Ngaka Modiri Molema (NNM)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Justice Tlamama Open Chess 2025 (U15)	2025-10-18	2025-10-18	Standard	Ngaka Modiri Molema (NNM)	5	5	2	Yes	Analysis
2	Heritage Day Chess 2025 (U14)	2025-09-27	2025-09-27	Standard	Ngaka Modiri Molema (NNM)	5	5	2	Yes	Analysis
3	Woman In Chess 2025 (Open)	2025-08-09	2025-08-09	Standard	Ngaka Modiri Molema (NNM)	5	5	1	Yes	Analysis

#	Games	Start				End
1	1	Tournament Justice Tlamama Open Chess 2025				Tournament Justice Tlamama Open Chess 2025
		date 2025-10-18	rnd 5	type Standard	result 1	date 2025-10-18	rnd 5	type Standard	result 1
		Opponent Mothibi, O (Orebotse)				Opponent Mothibi, O (Orebotse)
2	1	Tournament Justice Tlamama Open Chess 2025				Tournament Justice Tlamama Open Chess 2025
		date 2025-10-18	rnd 2	type Standard	result 1	date 2025-10-18	rnd 2	type Standard	result 1
		Opponent Pitso, R (Releabetswe)				Opponent Pitso, R (Releabetswe)
3	1	Tournament Heritage Day Chess 2025				Tournament Heritage Day Chess 2025
		date 2025-09-27	rnd 4	type Standard	result 1	date 2025-09-27	rnd 4	type Standard	result 1
		Opponent Shude, O (Olerato)				Opponent Shude, O (Olerato)

#	Games	Start				End
1	1	Tournament Woman In Chess 2025				Tournament Woman In Chess 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Majaja, A (Amogelang)				Opponent Majaja, A (Amogelang)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Woman In Chess 2025				Tournament Woman In Chess 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Majaja, A (Amogelang)				Opponent Majaja, A (Amogelang)

#	Games	Start				End
1	1	Tournament Woman In Chess 2025				Tournament Woman In Chess 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Majaja, A (Amogelang)				Opponent Majaja, A (Amogelang)

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	Majaja ,A (Amogelang)	1	1	425	1	1	425	0	0	0	0	0	0
1	Majaja ,A (Amogelang)	1	1176.3	1601.3	1	1175.4	1601.3	0	0	0	0	0	0
2	Pitso ,R (Releabetswe)	1	1	425	1	1	425	0	0	0	0	0	0
2	Pitso ,R (Releabetswe)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Motlhale ,O (Olebogeng Gedion)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Motlhale ,O (Olebogeng Gedion)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Motlhabedi ,K (Kelebogile)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Motlhabedi ,K (Kelebogile)	1	1281	856	1	1296	856	0	0	0	0	0	0
5	Mathane ,K (Katlego)	1	1	425	1	1	425	0	0	0	0	0	0
5	Mathane ,K (Katlego)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Ruaruka ,J (Joseph)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Ruaruka ,J (Joseph)	1	1199.7	774.7	1	1199.7	774.7	0	0	0	0	0	0
7	Bila ,O (Omosa)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Bila ,O (Omosa)	1	1233.1	808.1	1	1237	808.1	0	0	0	0	0	0
8	Sebe ,R (Reabetswe)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Sebe ,R (Reabetswe)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Motlhabane ,R (Realeboga)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Motlhabane ,R (Realeboga)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Mothibi ,O (Orebotse)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mothibi ,O (Orebotse)	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

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Jacobs, S (Siyabonga)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms