Chess South Africa Ratings Database

PLAYER PAGE

Personal

Larsen, J (Jack)

Chess SA id

1150190448

FIDE id

Date of birth

2015-12-22 (U12)

Gender

Male

Region

King Cetshwayo (KUR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1177	1200	1161.1	1200
Raw rating	1177	1200	1161.1	1200
Weighted rating	1176.7	1200	1160.5	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	171.3	165.8	175.3	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2024-02-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2024-02-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1177	1200	1161.1	1200
Analysis
Rating	1177	1200	1161.1	1200
Raw rating	1177	1200	1161.1	1200
Weighted rating	1176.7	1200	1160.5
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	171.3	165.8	175.3	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	1177	1200	1161.1	1200
New weighted rating	1176.7	1200	1160.6	1200
New weighted performance	0	0	0	0
Temp new rating	1177	1200	1161.1	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1177	1200	1161.1	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Rapid
	0	0
	5	5
	0	0
	5	5
	0	0
	0	0
History	10	10

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	U12
Region	King Cetshwayo (KUR)
Province	KwaZulu Natal (KZ)
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	5	1	20	-255	1195	940
Standard	0	0	0	0	0	0
Rapid	5	1	20	-255	1195	940
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	10	2.5	25	-212.5	1180.2	967.7
Standard	0	0	0	0	0	0
Rapid	10	2.5	25	-212.5	1180.2	967.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1177	1200	1161.1	1200
2025-09-30	1177	1200	1161.1	1200
2025-09-01	1177	1200	1161.1	1200
2025-08-01	1177	1200	1161.1	1200
2025-07-01	1177	1200	1161.1	1200
2025-06-01	1177	1200	1161.1	1200
2025-05-01	1177	1200	1161.1	1200
2025-04-01	1175.8	1200	1158.5	1200
2025-03-01	1178.1	1200	1163.1	1200
2025-02-01	1178.1	1200	1163.1	1200
2025-01-01	1175.9	1200	1159.3	1200
2024-12-01	1175.9	1200	1159.3	1200
2024-11-01	1175.9	1200	1159.3	1200
2024-10-01	1175.9	1200	1159.3	1200
2024-09-01	1175.9	1200	1159.3	1200
2024-08-01	1175.9	1200	1159.3	1200
2024-07-01	1175.9	1200	1159.3	1200
2024-09-01	1175.9	1200	1159.3	1200
2024-05-01	1175.9	1200	1159.3	1200
2024-04-01	1175.9	1200	1159.3	1200
2024-03-01	1175.9	1200	1159.3	1200
2024-02-01	1175.9	1200	1159.3	1200
2024-01-01	1175.9	1200	1159.3	1200
2023-12-01	1175.9	1200	1159.3	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	Grantleigh Chess Inter-House 2025 (Intermediate)	2025-03-27	2025-03-27	Rapid	King Cetshwayo (KUR)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Grantleigh Chess Inter-House 2025 (Intermediate)	2025-03-27	2025-03-27	Rapid	King Cetshwayo (KUR)	5	5	1	Yes	Analysis
2	2023 King Cetshwayo Junior & Intermediate Chess Tournament (U10)	2023-10-28	2023-10-28	Rapid	King Cetshwayo (KUR)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament				Tournament Grantleigh Chess Inter-House 2025
		date 2023-10-28	rnd 5	type Rapid	result 0.5	date 2025-03-27	rnd 1	type Rapid	result 1
		Opponent Mogoje, L (Lehlohonolo)				Opponent Mogoje, L (Lehlohonolo)
2	2	Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament				Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament
		date 2023-10-28	rnd 2	type Rapid	result 0.5	date 2023-10-28	rnd 3	type Rapid	result 0.5
		Opponent Simelane, Y (Yali)				Opponent Opperman, A (Aidan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament				Tournament Grantleigh Chess Inter-House 2025
		date 2023-10-28	rnd 5	type Rapid	result 0.5	date 2025-03-27	rnd 1	type Rapid	result 1
		Opponent Mogoje, L (Lehlohonolo)				Opponent Mogoje, L (Lehlohonolo)
2	2	Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament				Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament
		date 2023-10-28	rnd 2	type Rapid	result 0.5	date 2023-10-28	rnd 3	type Rapid	result 0.5
		Opponent Simelane, Y (Yali)				Opponent Opperman, A (Aidan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Grantleigh Chess Inter-House 2025				Tournament Grantleigh Chess Inter-House 2025
		date 2025-03-27	rnd 1	type Rapid	result 1	date 2025-03-27	rnd 1	type Rapid	result 1
		Opponent Mogoje, L (Lehlohonolo)				Opponent Mogoje, L (Lehlohonolo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Grantleigh Chess Inter-House 2025				Tournament Grantleigh Chess Inter-House 2025
		date 2025-03-27	rnd 1	type Rapid	result 1	date 2025-03-27	rnd 1	type Rapid	result 1
		Opponent Mogoje, L (Lehlohonolo)				Opponent Mogoje, L (Lehlohonolo)

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	Mogoje ,L (Lehlohonolo)	2	1.5	212.5	0	0	0	2	1.5	212.5	0	0	0
1	Mogoje ,L (Lehlohonolo)	2	1191.5	1404	0	0	0	2	1185.7	1404	0	0	0
2	Sithole ,A (Amahle)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Sithole ,A (Amahle)	1	1190.9	765.9	0	0	0	1	1200	765.9	0	0	0
3	Myeni ,S (Seluleko)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	Myeni ,S (Seluleko)	1	1200.9	775.9	0	0	0	1	1201.6	775.9	0	0	0
4	Van Reenen ,K (Kim)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Van Reenen ,K (Kim)	1	1200	775	0	0	0	1	1200	775	0	0	0
5	Opperman ,A (Aidan)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
5	Opperman ,A (Aidan)	1	1070.2	1070.2	0	0	0	1	1127.2	1070.2	0	0	0
6	Simelane ,Y (Yali)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
6	Simelane ,Y (Yali)	1	1168.6	1168.6	0	0	0	1	1200	1168.6	0	0	0
7	Perumal ,L (Leyton)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Perumal ,L (Leyton)	1	1188.2	763.2	0	0	0	1	1204.3	763.2	0	0	0
8	Barnes ,R (Ross)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Barnes ,R (Ross)	1	1200	775	0	0	0	1	1200	775	0	0	0
9	Ntuli ,N (Nqubeko)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Ntuli ,N (Nqubeko)	1	1200	775	0	0	0	1	1200	775	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

Larsen, J (Jack)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms