Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobsz, C (Christiaan)

Chess SA id

1150192955

FIDE id

Date of birth

2015-06-29 (U12)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

993

Item	Main	Standard	Rapid	Blitz
Rating	1156.9	1149.7	1200	1200
Raw rating	1156.2	1149	1200	1200
Weighted rating	1156.9	1149.7	1200	1200
Weighted performance	911.9	922.5	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	176.5	178.3	165.8	165.8
Highest rating	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.4	-0.5	0	0
New rating	1156.5	1149.2	1200	1200
Analysis
Rating	1156.9	1149.7	1200	1200
Raw rating	1156.2	1149	1200	1200
Weighted rating	1156.9	1149.7	1200
Weighted performance	911.9	922.5	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	176.5	178.3	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	1156.2	1149	1200	1200
New weighted rating	1156.5	1149.2	1200	1200
New weighted performance	911.6	922.1	0	0
Temp new rating	1156.5	1149.2	1200	1200
Temp new rating +/-	-0.4	-0.5	0	0
Final new rating +/-	-0.4	-0.5	0	0
New rating	1156.5	1149.2	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	12	12
	10	10
	0	0
	0	0
	0	0
History	22	22

Games since
	Main 22	Standard 22		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	12	1	8.33	-354.2	1340.5	986.3
Standard	12	1	8.33	-354.2	1340.5	986.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	22	4.5	20.45	-251.1	1272.6	1021.4
Standard	22	4.5	20.45	-251.1	1272.6	1021.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1156.2	1149	1200	1200
2025-09-01	1156.2	1149	1200	1200
2025-08-01	1156.2	1149	1200	1200
2025-07-01	1160.8	1154.3	1200	1200
2025-06-01	1160.8	1154.3	1200	1200
2025-05-01	1160.8	1154.3	1200	1200
2025-04-01	1160.8	1154.3	1200	1200
2025-03-01	1159.6	1152.8	1200	1200
2025-02-01	1162.6	1156.2	1200	1200
2025-01-01	1149.5	1140.8	1200	1200
2024-12-01	1149.5	1140.8	1200	1200
2024-11-01	1149.5	1140.8	1200	1200
2024-10-01	1149.5	1140.8	1200	1200
2024-09-01	1149.5	1140.8	1200	1200
2024-08-01	1149.5	1140.8	1200	1200
2024-07-01	1149.5	1140.8	1200	1200
2024-06-01	1149.5	1140.8	1200	1200
2024-08-01	1149.5	1140.8	1200	1200
2024-04-01	1149.5	1140.8	1200	1200
2024-03-01	1149.5	1140.8	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	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	George Top Schools 2025 (U11)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	4	0	Yes	Analysis
2	George Schools Chess Trials 3 2025 (U11 Boys)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	4	1	Yes	Analysis
3	George Schools Chess Trials 1 2025 (U11 Boys)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	4	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	George Top Schools 2025 (U11)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	4	0	Yes	Analysis
2	George Schools Chess Trials 3 2025 (U11 Boys)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	4	1	Yes	Analysis
3	George Schools Chess Trials 1 2025 (U11 Boys)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	4	0	Yes	Analysis
4	George Schools Trials 2 2024 (U9 Boys)	2024-02-17	2024-02-17	Standard	Eden (WEG)	5	5	1	Yes	Analysis
5	George Schools Trials 1 2024 (U9 Boys)	2024-02-03	2024-02-03	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament George Schools Trials 1 2024				Tournament George Schools Trials 1 2024
		date 2024-02-03	rnd 2	type Standard	result 0.5	date 2024-02-03	rnd 3	type Standard	result 1
		Opponent Van Zyl, J (Joshua)				Opponent Lett, A (Avelonke)
2	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Vivier, J (Jaycee)				Opponent Vivier, J (Jaycee)
3	1	Tournament George Schools Trials 2 2024				Tournament George Schools Trials 2 2024
		date 2024-02-17	rnd 2	type Standard	result 1	date 2024-02-17	rnd 2	type Standard	result 1
		Opponent Venter, K (Kelvin)				Opponent Venter, K (Kelvin)

#	Games	Start				End
1	2	Tournament George Schools Trials 1 2024				Tournament George Schools Trials 1 2024
		date 2024-02-03	rnd 2	type Standard	result 0.5	date 2024-02-03	rnd 3	type Standard	result 1
		Opponent Van Zyl, J (Joshua)				Opponent Lett, A (Avelonke)
2	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Vivier, J (Jaycee)				Opponent Vivier, J (Jaycee)
3	1	Tournament George Schools Trials 2 2024				Tournament George Schools Trials 2 2024
		date 2024-02-17	rnd 2	type Standard	result 1	date 2024-02-17	rnd 2	type Standard	result 1
		Opponent Venter, K (Kelvin)				Opponent Venter, K (Kelvin)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Vivier, J (Jaycee)				Opponent Vivier, J (Jaycee)
2	1	Tournament George Schools Trials 2 2024				Tournament George Schools Trials 2 2024
		date 2024-02-17	rnd 2	type Standard	result 1	date 2024-02-17	rnd 2	type Standard	result 1
		Opponent Venter, K (Kelvin)				Opponent Venter, K (Kelvin)
3	1	Tournament George Schools Trials 1 2024				Tournament George Schools Trials 1 2024
		date 2024-02-03	rnd 5	type Standard	result 1	date 2024-02-03	rnd 5	type Standard	result 1
		Opponent Mommen, A (Aiden)				Opponent Mommen, A (Aiden)

#	Games	Start				End
1	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Vivier, J (Jaycee)				Opponent Vivier, J (Jaycee)
2	1	Tournament George Schools Trials 2 2024				Tournament George Schools Trials 2 2024
		date 2024-02-17	rnd 2	type Standard	result 1	date 2024-02-17	rnd 2	type Standard	result 1
		Opponent Venter, K (Kelvin)				Opponent Venter, K (Kelvin)
3	1	Tournament George Schools Trials 1 2024				Tournament George Schools Trials 1 2024
		date 2024-02-03	rnd 5	type Standard	result 1	date 2024-02-03	rnd 5	type Standard	result 1
		Opponent Mommen, A (Aiden)				Opponent Mommen, A (Aiden)

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	Punt ,CR (Christiaan)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Punt ,CR (Christiaan)	2	1382.8	957.8	2	1378.1	957.8	0	0	0	0	0	0
2	Boshoff ,L (Luhan)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Boshoff ,L (Luhan)	2	1261.9	836.9	2	1291.8	836.9	0	0	0	0	0	0
3	Maliti ,A (Aya)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Maliti ,A (Aya)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Fritz ,U (Ulysse)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Fritz ,U (Ulysse)	1	1438.2	1013.2	1	1442	1013.2	0	0	0	0	0	0
5	James ,S (Sarah-Jane)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	James ,S (Sarah-Jane)	1	1508.8	1083.8	1	1545.2	1083.8	0	0	0	0	0	0
6	Strydom ,L (Liam)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Strydom ,L (Liam)	1	1199.7	774.7	1	1238	774.7	0	0	0	0	0	0
7	Oberholzer ,M (Milan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Oberholzer ,M (Milan)	1	1158.8	733.8	1	1149.6	733.8	0	0	0	0	0	0
8	Stander ,P (Paul)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Stander ,P (Paul)	1	1330.7	905.7	1	1349.7	905.7	0	0	0	0	0	0
9	Zaaiman ,J (Jean)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Zaaiman ,J (Jean)	1	1168.9	743.9	1	1170.5	743.9	0	0	0	0	0	0
10	Pieterse ,A (Andre)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Pieterse ,A (Andre)	1	1217.9	792.9	1	1221.2	792.9	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

Jacobsz, C (Christiaan)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms